CN119118579A - A fiber-reinforced mortar material and its preparation system - Google Patents
A fiber-reinforced mortar material and its preparation system Download PDFInfo
- Publication number
- CN119118579A CN119118579A CN202411257825.1A CN202411257825A CN119118579A CN 119118579 A CN119118579 A CN 119118579A CN 202411257825 A CN202411257825 A CN 202411257825A CN 119118579 A CN119118579 A CN 119118579A
- Authority
- CN
- China
- Prior art keywords
- mortar
- mortar material
- sand
- finished
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
- B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/29—Producing shaped prefabricated articles from the material by profiling or strickling the material in open moulds or on moulding surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0625—Polyalkenes, e.g. polyethylene
- C04B16/0633—Polypropylene
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明涉及建筑材料领域，尤其涉及一种基于纤维增强的砂浆材料及其制备系统，所述砂浆材料包括按重量配比的水泥1份、砂石3份、自来水0.65份以及纤维0.01～0.03份，所述砂石包括天然砂和再生砂，所述再生砂在砂石中的占比为30％、60％或100％。本方案对于再生砂替代天然砂后，在水泥砂浆中的表现和应用，本方案给出了系统性的研究，通过借鉴本方案的研究结果，可以根据不同工程需求设置不同的材料配比并生产适用于不同工程的砂浆材料，有利于降低砂浆材料生产的成本。
The present invention relates to the field of building materials, and in particular to a fiber-reinforced mortar material and a preparation system thereof, wherein the mortar material comprises 1 part of cement, 3 parts of sand and gravel, 0.65 parts of tap water, and 0.01-0.03 parts of fiber by weight, wherein the sand and gravel comprise natural sand and regenerated sand, and the proportion of the regenerated sand in the sand and gravel is 30%, 60% or 100%. This scheme provides a systematic study on the performance and application of regenerated sand in cement mortar after replacing natural sand. By drawing on the research results of this scheme, different material ratios can be set according to different engineering requirements and mortar materials suitable for different projects can be produced, which is conducive to reducing the cost of mortar material production.
Description
Technical Field
The invention relates to the field of building materials, in particular to a fiber-reinforced mortar material and a preparation system thereof.
Background
Building rubbish brought by urban and rural construction is increased year by year, negative effects are brought to the green healthy development of urban and rural construction, a plurality of components in the building rubbish can be recycled, and the building rubbish can be effectively used, the environment is improved, and meanwhile the problem of resource shortage can be solved through recycling and modifying the building material.
The recycled concrete disclosed in the prior art of CN109553368A comprises, by mass, 10-12 parts of water, 20-25 parts of cement, 1-2 parts of a water reducing agent, 7-8 parts of silica fume, 40-50 parts of recycled aggregate which is a mixture of crushed masonry, waste concrete blocks and industrial waste residues, 60-80 parts of natural aggregate, 10-15 parts of waste textile fibers and 1-2 parts of a coupling agent.
Another exemplary type of recycled concrete resistant to cracking, as disclosed in the prior art of CN113603422A, is made from materials including Portland cement, first rice hull ash, natural fine aggregate, natural coarse aggregate, recycled coarse aggregate, water, a water reducing agent, modified rubber powder, amino silicone oil modified steel fibers, the modified rubber powder being made from the reaction of waste rubber powder and second rice hull ash in a sodium hydroxide solution.
Still further to the method, system and apparatus for processing Recycled Concrete Aggregate (RCA), including a computer program encoded on a computer storage medium, as disclosed in the prior art of CN 116710415A. One of the methods includes obtaining a first optical measurement of the RCA particles, determining an initial characteristic representation of the RCA particles, iteratively performing a carbonation process on the RCA particles, obtaining a second optical measurement of the RCA particles, and determining a second characteristic representation of the RCA particles, wherein conditions of the carbonation process are initially set based on the initial characteristic representation and conditions of the carbonation process are adjusted based on the second characteristic representation, iteratively performing a densification process on the RCA particles, obtaining a third optical measurement of the RCA particles, and determining a third characteristic representation of the RCA particles, wherein conditions of the densification process are initially set based on the initial characteristic representation or the second characteristic representation and conditions of the densification process are adjusted based on the third characteristic representation.
In the current research field, there is relatively little intensive research on reclaimed sand, and a main research focus is on performance tests of reclaimed concrete. However, there has been no systematic study on the performance and application of reclaimed sand in cement mortar after replacing natural sand. The present invention has been made to solve the problems occurring in the art.
Disclosure of Invention
The invention aims at providing a fiber-reinforced mortar material and a preparation system thereof, aiming at the defects existing at present.
In order to overcome the defects in the prior art, the invention adopts the following technical scheme:
the mortar material comprises 1 part of cement, 3 parts of sand stone, 0.65 part of tap water and 0.01-0.03 part of fiber in parts by weight, wherein the sand stone comprises natural sand and reclaimed sand, and the reclaimed sand accounts for 30%, 60% or 100% of the sand stone;
The natural sand is river sand which is used as a raw material, the apparent density of the river sand is 2654kg/m 3, the stacking density is 1495kg/m 3, the mud content is 7.5 percent, the fineness modulus is 3.1, and the strength grade of the cement is PP32.5R;
The fiber is polypropylene fiber, the model of the polypropylene fiber is HC19, the tensile strength is 469MPa, the ultimate elongation is 28.4%, the elastic modulus is 4236MPa, the density is 0.91g/cm 3, the diameter is 32.7mm, and the melting point is 169 ℃.
Further, the fiber was 0.01 part and the proportion of reclaimed sand in sand was 60%.
The utility model provides a mortar material preparation system based on fiber reinforcement for realizing mortar material, preparation system includes mould, planetary mixer, vibrating table, wood strip, steel needle, maintenance machine and detection module, the mould is the cuboid container, the mould is used for moulding cement mortar, planetary mixer is used for stirring various raw materials, vibrating table is used for vibrating cement mortar in the mould, wood strip and steel needle are used for strickleing the surface of cement mortar, maintenance machine is used for preserving finished mortar material, detection module is used for detecting the performance of finished mortar material.
Still further, the detection module includes digital measuring apparatu, consistometer, electronic balance, press and three-point bending test machine, digital measuring apparatu is used for detecting the length, width, the height of finished mortar material of production, consistometer is used for detecting the consistence of finished mortar material, electronic balance is used for weighing the finished mortar material, the press is used for detecting the compressive strength of finished mortar material, three-point bending test machine is used for detecting the flexural strength of finished mortar material.
Still further, the preparation method of the mortar material comprises the following steps:
S1, preparing corresponding raw materials and mixing the raw materials according to volume proportions;
S2, stirring the mixed raw materials by adopting a planetary stirrer to obtain mortar;
s3, cleaning the mold, coating a release agent on the inner side of the mold, and pouring the stirred mortar into the mold;
s4, vibrating the die, returning to S2 if the die is not fully filled after vibrating, and otherwise, executing S5;
S5, carrying out strickling treatment on the mortar on the surface of the die by using wood strips or steel needles;
s6, standing the mould, and demoulding and sampling the mould after the mortar is solidified and molded;
s7, placing the demolded and sampled mortar in a curing machine for curing, and obtaining a finished mortar material after curing is completed;
S8, obtaining initial values of length, width, height and compressive strength and initial values of flexural strength of the finished mortar material;
S9, acquiring respective error parameters of the finished mortar material under the condition that the pressure transmission direction of the finished mortar material is along the height, the length and the width of the finished mortar material;
S10, acquiring corrected compressive strength and flexural strength according to the initial value obtained in the S8 and the error parameter obtained in the S9;
S11, judging whether the corrected compressive strength and flexural strength are in the required range, if so, taking the weight ratio of each raw material in the finished mortar material as the final ratio, otherwise, adjusting the weight ratio of each raw material in the mortar material and returning to S1.
The invention has the beneficial effects that 1. For the performance and the application of the regenerated sand in cement mortar after replacing natural sand, the scheme provides systematic research, and by referring to the research result of the scheme, different material proportions can be set according to different engineering requirements and mortar materials suitable for different engineering can be produced, thereby being beneficial to reducing the production cost of the mortar materials.
2. The mortar material produced according to the proportion provided by the scheme has higher compressive strength and flexural strength by introducing fibers and a proper amount of reclaimed sand, so that the mortar material can meet most of engineering requirements while ensuring higher economic benefit.
Drawings
The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate like parts in the different views.
FIG. 1 is a schematic diagram of a manufacturing system according to the present invention.
FIG. 2 is a table of experimental materials data of the present invention.
FIG. 3 is a table of the results of testing mortar consistencies for different experimental groups according to the invention.
FIG. 4 is a table of the results of the density, compressive strength and flexural strength measurements of the various experimental groups of the present invention.
Fig. 5 is a table and corresponding scatter plot of the data of fig. 4 averaged in accordance with the present invention.
Fig. 6 is a schematic diagram of the finished mortar material in the case where WC (z) is the error parameter in the compression test.
FIG. 7 is a schematic diagram of the final mortar material with WT (z, x) as the error parameter in the flexural test.
Detailed Description
The following embodiments of the present invention are described in terms of specific examples, and those skilled in the art will appreciate the advantages and effects of the present invention from the disclosure herein. The invention is capable of other and different embodiments and its several details are capable of modification and variation in various respects, all without departing from the spirit of the present invention. The drawings of the present invention are merely schematic illustrations, and are not intended to be drawn to actual dimensions. The following embodiments will further illustrate the related art content of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
According to the embodiment I, according to the figures 1,2,3 and 4, the embodiment provides a fiber-reinforced mortar material, wherein the mortar material comprises 1 part of cement, 3 parts of sand stone, 0.65 part of tap water and 0.01-0.03 part of fiber in parts by weight, the sand stone comprises natural sand and reclaimed sand, and the reclaimed sand accounts for 30%, 60% or 100% of the sand stone;
Preferably, the fiber is 0.01 part and the reclaimed sand accounts for 60 percent of the sand stone, and the mortar density of the prepared mortar material is 1859.1kg/m 3, the consistency is 6.4mm, the compressive strength is 16.3MPa, and the flexural strength is 3.9MPa. The mortar material prepared by the proportion has the mortar density of 1859.1kg/m 3, the consistency of 6.4mm, the compressive strength of 16.3MPa (which is equivalent to 86.2 percent of the mortar material prepared by the reference proportion), the flexural strength of 3.9MPa (which is equivalent to 92.9 percent of the mortar material prepared by the reference proportion), and the economic benefit is ideal and most engineering performance requirements can be met by adopting the regenerated sand with lower cost, wherein the reference proportion is 1 part of cement, 3 parts of natural sand and 0.65 part of tap water according to the weight proportion.
Specifically, the stronger the flexural strength and compressive strength, the better the performance of the material, and the compressive strength, flexural strength, density and cost required by the comprehensive engineering can be combined with those of fig. 4 and 5 to adjust the proportion of the raw materials, so as to meet the requirements of different engineering, for example, when no fiber is added, the compressive strength can be improved by properly reducing the reclaimed sand, when the fiber content is below 3%, the compressive strength can be improved by adjusting the content of the reclaimed sand in sand stone to be close to 60%, and when the reclaimed sand is added, the fiber content is adjusted to be close to 1%, and when the reclaimed sand content is adjusted to be close to 6%, the various capacities can be comprehensively improved.
Specifically, the reclaimed sand is derived from used sand subjected to innocent treatment in casting production, and the treatment method belongs to the prior art, and the method proposed in CN115846588a can be referred to specifically, and will not be described in detail herein.
The natural sand is river sand which is used as a raw material, the apparent density of the river sand is 2654kg/m 3, the stacking density of the river sand is 1495kg/m 3, the mud content is 7.5 percent, the fineness modulus is 3.1, the strength grade of the cement is PP32.5R, the proportion of the regenerated sand in the natural sand is 30 percent, 60 percent and 100 percent, and the proportion of the regenerated sand in the natural sand is 0.01 part, 0.02 part and 0.03 part.
Further, the fiber is a polypropylene fiber, the model of the polypropylene fiber is HC19, the tensile strength is 469MPa, the ultimate elongation is 28.4%, the elastic modulus is 4236MPa, the density is 0.91g/cm 3, the diameter is 32.7mm, and the melting point is 169 ℃.
Still further still include a mortar material preparation system based on fibre reinforcement for realizing the mortar material, this system includes mould, planetary mixer, vibrating platform, batten, steel needle, maintenance machine and detection module, the mould is the cuboid container, the mould is used for moulding cement mortar, planetary mixer is used for stirring various raw materials, vibrating platform is used for vibrating cement mortar in the mould, batten and steel needle are used for strickleing the surface of cement mortar, maintenance machine is used for preserving finished mortar material, detection module is used for detecting the performance of finished mortar material.
Specifically, the die is a cuboid container with the length of 40mm, the width of 40mm and the height of 160 mm.
Still further, the detection module includes digital measuring apparatu, consistometer, electronic balance, press and three-point bending test machine, digital measuring apparatu is used for detecting the length, width, the height of finished mortar material of production, consistometer is used for detecting the consistence of finished mortar material, electronic balance is used for weighing the finished mortar material, the press is used for detecting the compressive strength of finished mortar material, three-point bending test machine is used for detecting the flexural strength of finished mortar material.
The consistency meter can be an SC-145 digital display mortar consistency meter pointer common measuring instrument fluidity tester, the press can be a hydraulic press, the density of a finished mortar material can be obtained by combining the weighing result of an electronic balance and the volume of a mould and combining the existing density calculation formula, the compressive strength can be detected by applying pressure to one side of the material and by the maximum load born before the material is damaged, and the flexural strength can be obtained by supporting the material and applying load in the middle of the material and observing the maximum load born before the material is damaged.
Specifically, in addition to the proportions given in the first claim, the mortar materials with different proportions are also researched, 16 groups of experiments are performed in total through orthogonal test design, and the performances of the finished mortar materials obtained under the conditions that the substitution rate of reclaimed sand is 0%, 30%, 60% and 100% and the fiber doping amount is 0%, 0.1%, 0.2% and 0.3% are detected, so that the performances of the finished mortar materials with different proportions are obtained, and the material proportions corresponding to the finished mortar materials with the best performances are screened out.
Specifically, 16 groups of experiments are arranged in total in the scheme, fig. 2 is a data chart of experimental materials, fig. 3 is a table of detection results of mortar consistencies of different experimental groups, fig. 4 is a table of detection results of density, compressive strength and flexural strength of different experimental groups, and fig. 5 is a table obtained by averaging the data of fig. 4 and a corresponding scatter diagram thereof;
The following is an example of the averaging process, and as shown in FIG. 5, the density corresponding to 0% of the fiber content is 1898.525, which is the result of averaging the density values (1867.6+1925.1+1884.6+1916.8) corresponding to 0% of the fiber content (group order 1 to 4) in FIG. 4.
Still further, the preparation method of the mortar material comprises the following steps:
S1, preparing corresponding raw materials and mixing the raw materials according to volume proportions;
S2, stirring the mixed raw materials by adopting a planetary stirrer to obtain mortar;
s3, cleaning the mold, coating a release agent on the inner side of the mold, and pouring the stirred mortar into the mold;
s4, vibrating the die, and returning to S2 if the die is not fully filled after vibrating, otherwise, S5;
S5, carrying out strickling treatment on the mortar on the surface of the die by using wood strips or steel needles;
s6, standing the mould, and demoulding and sampling the mould after the mortar is solidified and molded;
s7, placing the demolded and sampled mortar in a curing machine for curing, obtaining a finished mortar material after curing is completed,
S8, obtaining the initial values of the length, width and height and the initial values of the flexural strength of the finished mortar material;
S9, acquiring respective error parameters of the finished mortar material under the condition that the pressure transmission direction of the finished mortar material is along the height, the length and the width of the finished mortar material;
S10, obtaining corrected compressive strength and flexural strength according to the initial value obtained in the S8 and the error parameter obtained in the S9;
S11, judging whether the corrected compressive strength and flexural strength are in the required range, if so, taking the weight ratio of each raw material in the finished mortar material as the final ratio, otherwise, adjusting the weight ratio of each raw material in the mortar material and returning to S1.
Specifically, the curing time is 28 days, the curing temperature is 18-22 ℃, and the relative humidity of curing is 90%.
The scheme has the beneficial effects that 1. The scheme provides systematic research on the performance and the application of the regenerated sand in cement mortar after replacing natural sand, and by referring to the research result of the scheme, different material ratios can be set according to different engineering requirements and mortar materials suitable for different engineering can be produced, so that the cost of the production of the mortar materials is reduced.
2. The mortar material produced according to the proportion provided by the scheme has higher compressive strength and flexural strength by introducing fibers and a proper amount of reclaimed sand, so that the mortar material can meet most of engineering requirements while ensuring higher economic benefit.
In the first embodiment, the samples used for detecting the compressive strength of the mortar material are cuboid mortar materials with the length of 40mm, the width of 40mm and the height of 160mm, the samples used for detecting the flexural strength of the mortar material are cuboid mortar materials with the length of 70.7mm, the width of 70.7mm and the height of 70.7mm, and when the mortar materials with the same size are detected, the transmission speeds of the pressure in the materials are different in different placement modes or the different sizes of the mortar materials, so experimental errors can be generated, and therefore, the embodiment provides a preferred calculation method for the compressive strength and the flexural strength in the process of detecting the compressive strength and the flexural strength of the finished mortar material to reduce the influence of the errors on experimental results:
the preparation system is characterized in that the steps S8 to S10 comprise the following steps:
obtaining an initial value of compressive strength:
wherein f is an initial value of compressive strength, P is a maximum load applied during destruction, A is a stress area of the finished mortar material, and a propagation direction of pressure is transmitted to a bottom surface along a top (stress surface) of the finished mortar material, and an error parameter WC (z) is calculated by the following formula:
As shown in fig. 6, wc (z) is an error parameter in the case where the pressure transmission direction of the finished mortar material is along the high (z) direction of the finished mortar material, x is a long value of the finished mortar material, y is a wide value of the finished mortar material, z is a high value of the finished mortar material, f (x) is an initial value of compressive strength obtained when the pressure transmission direction is along the long (bottom area is y×z) direction of the finished mortar material, f (y) is an initial value of compressive strength obtained when the pressure transmission direction is along the wide (bottom area is x×z) direction of the finished mortar material, and f (z) is an initial value of compressive strength obtained when the pressure transmission direction is along the high (bottom area is y×x) direction of the finished mortar material;
WC (x) is an error parameter in the case where the pressure transmission direction of the finished mortar material is along the length (x) of the finished mortar material, WC (y) is an error parameter in the case where the pressure transmission direction of the finished mortar material is along the width (y) of the finished mortar material.
The corrected compressive strength KYQD is:
Specifically, when the fiber content or the reclaimed sand content is changed, f (x) and other data need to be acquired again to acquire the corrected compressive strength;
The optimization calculation method of the flexural strength comprises the following steps:
the initial value of the flexural strength is obtained as
Wherein g is an initial value of flexural strength, x is a long value (i.e. supporting distance) of the finished mortar material, y is a wide value of the finished mortar material, z is a high value of the finished mortar material, and the propagation direction of pressure is transmitted to the bottom surface and the long two ends along the top (stress surface) of the finished mortar material, and error parameters WT (z, x) are calculated according to the following formula:
The detection module further comprises a clamp holder, when the compression strength test is carried out, the clamp holder clamps two sides of the finished mortar material, the press machine presses the top of the finished mortar material to the bottom, as shown in fig. 7, the WT (z, x) is an error parameter when the pressure is transmitted from the top to the bottom when the clamping direction is the left and right sides of the finished mortar material on the figure, namely the WT (z, x) is an error parameter when the clamping position is the two long sides (x) direction, the pressure transmission direction of the finished mortar material is transmitted to the bottom (xy) of the finished mortar material along the high (z) of the finished mortar material, the g (z, x) is an initial value of the flexural strength obtained when the pressure transmission direction of the finished mortar material is transmitted to the bottom along the high (z) of the finished mortar material and the two ends of the long (x), the g (x, y) is an initial value of the flexural strength obtained when the pressure transmission direction of the finished mortar material is transmitted to the bottom along the long (x) of the finished mortar material and the two ends of the wide (y) of the finished mortar material, and the flexural strength obtained when the pressure transmission direction of the finished mortar material is the two ends of the finished mortar material along the wide (y) is the initial value;
g (y, x) is the initial value of the flexural strength when the pressure transmission direction of the finished mortar material is the condition that the stress surface is transmitted to the bottom surface along the width (y) and the two ends of the length (x) of the finished mortar material; the initial value of the flexural strength is obtained when g (z, y) is the pressure transmission direction of the finished mortar material and the stress surface is transmitted to the bottom surface along the high (z) and the two ends of the width (y) of the finished mortar material;
WT (y, z) is an error parameter in the case where the pressure transmission direction of the finished mortar material is transmitted to the bottom of the finished mortar material along the width (y) of the finished mortar material when the clamping position is in the two high-side (z) directions:
WT (x, y) is an error parameter in the case where the pressure transmission direction of the finished mortar material is transmitted to the bottom of the finished mortar material along the width (y) of the finished mortar material when the clamping position is in the two long side (x) directions:
the corrected compressive strength KYQD is:
Specifically, when the fiber content or the reclaimed sand content is changed, it is necessary to acquire data of g (z, x) or the like again to acquire the corrected compressive strength.
The method has the advantages that the error is calculated by referring to the compressive strength and the flexural strength which are obtained under different conditions, and the final calculation result is adjusted by the error, so that the error caused by different stress conditions is reduced, and the accuracy of the final calculation result is improved.
The foregoing disclosure is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention, so that all equivalent technical changes made by applying the description of the present invention and the accompanying drawings are included in the scope of the present invention, and in addition, elements in the present invention can be updated as the technology develops. The above units are only examples, and those skilled in the art can implement the present embodiment according to actual requirements to implement different designs to adopt corresponding units.
Claims (5)
1. The mortar material based on fiber reinforcement is characterized by comprising 1 part of cement, 3 parts of sand stone, 0.65 part of tap water and 0.01-0.03 part of fiber in parts by weight, wherein the sand stone comprises natural sand and reclaimed sand, and the reclaimed sand accounts for 30%, 60% or 100% of the sand stone;
The natural sand is river sand which is used as a raw material, the apparent density of the river sand is 2654kg/m 3, the stacking density is 1495kg/m 3, the mud content is 7.5 percent, the fineness modulus is 3.1, and the strength grade of the cement is PP32.5R;
The fiber is polypropylene fiber, the model of the polypropylene fiber is HC19, the tensile strength is 469MPa, the ultimate elongation is 28.4%, the elastic modulus is 4236MPa, the density is 0.91g/cm 3, the diameter is 32.7mm, and the melting point is 169 ℃.
2. A fibre reinforced mortar material according to claim 1, wherein the fibres are 0.01 parts and the proportion of reclaimed sand in the sand is 60%.
3. A mortar material preparation system based on fiber reinforcement for realizing the mortar material according to claim 2, which is characterized in that the preparation system comprises a mold, a planetary mixer, a vibrating table, a wood bar, a steel needle, a curing machine and a detection module, wherein the mold is a cuboid container, the mold is used for shaping cement mortar, the planetary mixer is used for stirring various raw materials, the vibrating table is used for vibrating the cement mortar in the mold, the wood bar and the steel needle are used for scraping the surface of the cement mortar, the curing machine is used for storing finished mortar materials, and the detection module is used for detecting the performance of the finished mortar materials.
4. A fibre reinforced mortar material preparation system according to claim 3, wherein the detection module comprises a digital measuring instrument for detecting the length, width and height of the finished mortar material produced, a consistometer for detecting the consistency of the finished mortar material, an electronic balance for weighing the finished mortar material, a press for detecting the compressive strength of the finished mortar material, and a three-point bending tester for detecting the flexural strength of the finished mortar material.
5. The fiber-reinforced mortar material preparation system according to claim 4, further comprising a preparation method of a mortar material, comprising the steps of:
S1, preparing corresponding raw materials and mixing the raw materials according to volume proportions;
S2, stirring the mixed raw materials by adopting a planetary stirrer to obtain mortar;
s3, cleaning the mold, coating a release agent on the inner side of the mold, and pouring the stirred mortar into the mold;
s4, vibrating the die, returning to S2 if the die is not fully filled after vibrating, and otherwise, executing S5;
S5, carrying out strickling treatment on the mortar on the surface of the die by using wood strips or steel needles;
s6, standing the mould, and demoulding and sampling the mould after the mortar is solidified and molded;
s7, placing the demolded and sampled mortar in a curing machine for curing, and obtaining a finished mortar material after curing is completed;
S8, obtaining initial values of length, width, height and compressive strength and initial values of flexural strength of the finished mortar material;
S9, acquiring respective error parameters of the finished mortar material under the condition that the pressure transmission direction of the finished mortar material is along the height, the length and the width of the finished mortar material;
S10, acquiring corrected compressive strength and flexural strength according to the initial value obtained in the S8 and the error parameter obtained in the S9;
S11, judging whether the corrected compressive strength and flexural strength are in the required range, if so, taking the weight ratio of each raw material in the finished mortar material as the final ratio, otherwise, adjusting the weight ratio of each raw material in the mortar material and returning to S1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411257825.1A CN119118579A (en) | 2024-09-09 | 2024-09-09 | A fiber-reinforced mortar material and its preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411257825.1A CN119118579A (en) | 2024-09-09 | 2024-09-09 | A fiber-reinforced mortar material and its preparation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119118579A true CN119118579A (en) | 2024-12-13 |
Family
ID=93761793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411257825.1A Pending CN119118579A (en) | 2024-09-09 | 2024-09-09 | A fiber-reinforced mortar material and its preparation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119118579A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108726967A (en) * | 2018-07-20 | 2018-11-02 | 浙江新邦远大绿色建筑产业有限公司 | A kind of production technology of PC components |
| CN110498647A (en) * | 2019-07-23 | 2019-11-26 | 东北电力大学 | A fiber-reinforced recycled fine aggregate cement-based composite material |
| CN110705920A (en) * | 2019-11-04 | 2020-01-17 | 江苏海事职业技术学院 | A multi-hidden layer BP network prediction method for cement strength in big data environment |
| CN118205095A (en) * | 2024-03-18 | 2024-06-18 | 甘肃公航旅路业有限公司 | An intelligent preparation system for RPC cover |
-
2024
- 2024-09-09 CN CN202411257825.1A patent/CN119118579A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108726967A (en) * | 2018-07-20 | 2018-11-02 | 浙江新邦远大绿色建筑产业有限公司 | A kind of production technology of PC components |
| CN110498647A (en) * | 2019-07-23 | 2019-11-26 | 东北电力大学 | A fiber-reinforced recycled fine aggregate cement-based composite material |
| CN110705920A (en) * | 2019-11-04 | 2020-01-17 | 江苏海事职业技术学院 | A multi-hidden layer BP network prediction method for cement strength in big data environment |
| CN118205095A (en) * | 2024-03-18 | 2024-06-18 | 甘肃公航旅路业有限公司 | An intelligent preparation system for RPC cover |
Non-Patent Citations (1)
| Title |
|---|
| 张俊红: "《道路建筑材料 第2版》", 30 June 2022, 重庆大学出版社, pages: 228 - 230 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Feng et al. | Mechanical behavior and constitutive model of sustainable concrete: Seawater and sea-sand recycled aggregate concrete | |
| Xue et al. | Mechanical behavior and microscopic mechanism of fiber reinforced coarse aggregate cemented backfill | |
| CN111875313B (en) | Preparation method of super early strength self-compacting concrete applied to PC (polycarbonate) member | |
| CN109534744A (en) | The preparation method of regeneration aggregate pervious concrete | |
| US12099037B1 (en) | Method for determining optimal content and slenderness ratio of fiber in compression cast fiber-reinforced concrete | |
| CN104310892A (en) | Preparation method of polypropylene fiber concrete | |
| CN105759017A (en) | Device and method for evaluating anti-crack performance of external squares and internal circles of cement-based materials | |
| CN109809774A (en) | A kind of hybrid fiber slag sand substitute concrete and preparation method thereof | |
| Feng et al. | Experimental study on the effects of the fiber and nano-Fe2O3 on the properties of the magnesium potassium phosphate cement composites | |
| CN108503313A (en) | A kind of cement soil material and preparation method thereof that ferronickel ground-slag is mixed again with miberal powder | |
| CN110407521A (en) | A kind of self-compaction UHPC and preparation method thereof containing microballon | |
| CN108585687A (en) | A kind of ferronickel ground-slag cement soil material of function admirable and preparation method thereof | |
| CN115710107A (en) | Water permeable brick and preparation method thereof | |
| Pan et al. | Effect of alkaline rice straw fibers content and curing ages on static mechanical properties of cemented lithium mica tailings backfill | |
| CN110482923A (en) | A kind of conductive black Super-P concrete and preparation method thereof | |
| CN119118579A (en) | A fiber-reinforced mortar material and its preparation system | |
| CN113816663A (en) | Fiber-containing composite filler material and concrete member | |
| CN111892359A (en) | A kind of environment-friendly green concrete and preparation method thereof | |
| CN111272790A (en) | A method for determining the effect of polypropylene fiber distribution on the tensile properties of strong and tough concrete | |
| CN115745563A (en) | Quick repairing material for cement concrete pavement and preparation method | |
| CN106365530A (en) | A large concrete structure simulation model material and its preparation method | |
| CN112194418B (en) | Wood fiber self-compacting concrete | |
| CN116908231A (en) | Method for rapidly determining activity intensity index of industrial solid waste volcanic ash | |
| CN110057716B (en) | Fresh concrete 28d compressive strength prediction method based on water-gel density ratio determination | |
| CN116283132A (en) | Micro-vibration self-compaction ultrahigh-flow-state concrete product for bridge structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |