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US20080008525A1 - Composition for sealing joints in road surfaces and subsurfaces - Google Patents

Composition for sealing joints in road surfaces and subsurfaces Download PDF

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Publication number
US20080008525A1
US20080008525A1 US11/732,730 US73273007A US2008008525A1 US 20080008525 A1 US20080008525 A1 US 20080008525A1 US 73273007 A US73273007 A US 73273007A US 2008008525 A1 US2008008525 A1 US 2008008525A1
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US
United States
Prior art keywords
emulsion
asphalt
composition
pavement
joints
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.)
Abandoned
Application number
US11/732,730
Inventor
Delbert L. Dawson
Colin Durante
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
D&D Emulsions Inc
Original Assignee
D&D Emulsions Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by D&D Emulsions Inc filed Critical D&D Emulsions Inc
Priority to US11/732,730 priority Critical patent/US20080008525A1/en
Assigned to D&D EMULSIONS, INC. reassignment D&D EMULSIONS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAWSON, DELBERT L., DURANTE, COLIN
Publication of US20080008525A1 publication Critical patent/US20080008525A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
    • E01C11/103—Joints with packings prepared only in situ; Materials therefor
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0966—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
    • E01C23/0973—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants

Definitions

  • the present invention relates generally to road construction, and more particularly is a method of prolonging the useful life of a road surface by sealing and strengthening the joints created during the paving process.
  • Highway paving is a huge industry. There are over 2.5 million miles of paved roads in the United States alone. Depending on the weather and level of usage the road surface may have to be repaired or replaced every 3-12 years. This represents a huge financial burden on the entity responsible for road maintenance.
  • the first area of premature deterioration causation is the temperature effect.
  • the asphalt pavement shrinks as the ambient temperature drops during a seasonal temperature change. Asphalt pavements are strong when subjected to compressive loads; however, asphalt pavements do not have nearly as much resistance when subjected to tension (pulling apart) forces. The tension created by shrinkage, which occurs when the temperature decreases, is therefore very damaging to an asphalt surface, particularly around the joints.
  • the asphalt binder or glue used in the pavement deteriorates when subjected to heat.
  • the manufacturing process used to make asphalt paving mixture subjects the asphalt binder material to high heat. Summer temperatures also heat the asphalt and contribute to the deterioration of the asphalt binder material, thereby reducing the resistance of the asphalt to stress, particularly to tension forces. The effects of the reduced resistance of the asphalt to cracking are most prevalent at the joint areas, where the asphalt pavement matrix is weakest.
  • the second chief cause of premature deterioration is the lack of compaction at the edges of a given asphalt pavement section.
  • the area at and adjacent to the longitudinal joint of two asphalt highway lanes is difficult to compact during initial construction.
  • the area to either side of the longitudinal joint (roughly plus or minus one foot from the joint) has less density or compaction than the balance of the pavement.
  • the problem then is water and air intrusion into the area that is not as highly compacted. Water strips the asphalt coating from the asphalt pavement aggregate, thereby weakening the bond between coated aggregate pieces.
  • water absorbed in the critical non-compacted area freezes in winter conditions, causing mechanical damage to the area. Air entry into the pavement structure accelerates oxidation of the asphalt binder reducing its glue-like properties.
  • a further object of the present invention is to provide a sealant that not only seals the asphalt road surface, but also reduces internal voids in the asphalt beneath the road surface, providing an in-depth sealing effect that is not subject to traffic wear.
  • the present invention is a composition to seal the joints in an asphalt road surface and subsurface to prolong the useful life of the road.
  • the composition utilizes a polymer modified cationic maltene emulsion containing polymer modified maltene oils and resins and surfactants/wetting agents.
  • the emulsion is applied to the longitudinal joints in the asphalt pavement surface.
  • the emulsion penetrates into the asphalt pavement, combining chemically with the asphalt coating on the aggregate, thereby altering the modulus of elasticity of the asphalt binder so that the resistance of the pavement structure to tension stress (low temperature cracking) is increased, and water absorption into the pavement is reduced.
  • An advantage of the present invention is that it significantly reduces the amount and magnitude of cracking damage to an asphalt road surface over and adjacent to joints.
  • Another advantage of the present invention is that it is easy to apply during new road surface construction.
  • a still further advantage of the present invention is that it is very cost effective in terms of resurfacing savings as compared to the cost of applying the sealing emulsion of the present invention.
  • the present invention is a composition for sealing and strengthening the joints in an asphalt road surface and subsurface to prolong the useful life of the road.
  • the composition utilizes a polymer modified cationic maltene emulsion containing polymer modified maltene oils and resins, surfactants, and wetting agents.
  • the emulsion is applied to the longitudinal joints in the asphalt surface.
  • the area around the center longitudinal joint or joints is difficult to properly compact.
  • the joint itself, and a surrounding band approximately a foot wide on either side of the joint, cannot be compacted as thoroughly as the main body of the asphalt pavement.
  • the asphalt pavement in the joint area is more porous than the other areas of the asphalt pavement, and is therefore more susceptible to water permeation, oxidation, and tension stress damage.
  • the emulsion is typically sprayed onto the road surface.
  • a spray bar two to three feet wide and two to three inches in diameter, with one-eighth inch nozzles is used in the preferred embodiment to spray the emulsion onto the road surface.
  • the application rate is controlled by a computerized flow manager, which allows the emulsion to be precisely applied to the joint area of the road surface. Once the flow rate computer has been set to the desired application rate, the application of the emulsion is very accurate due to the computer control of the flow, regardless of travel speed variations of the sprayer.
  • the emulsion of the present invention reduces the voids in the asphalt pavement, both on the top surface and beneath the surface.
  • the emulsion alters the modulus of elasticity of the binder in the asphalt pavement mixture, strengthening the asphalt binder and introducing rubber-like properties to the surface and below the surface throughout the joint area and the bordering band where the emulsion is applied.
  • the increased elasticity of the asphalt pavement increases its resistance to tension induced stress.
  • the application of the emulsion also reduces the water absorption of the asphalt pavement.
  • the emulsion is formed from selected oils and resins extracted from a crude oil source, with a polymer added at the mill or after the emulsion has been prepared.
  • the base oil of the emulsion is a petroleum resin.
  • Petroleum Resin C.A.S. 64742-04-7 or 64742-11-6 is chosen.
  • the base resin is mixed with water, emulsifiers, and a polymer compound.
  • the polymer compound is Surfonic NPB95 or Witcolnol NP-100, and the emulsifier is E-11 Redicote or AA-57.
  • the emulsion comprises, as a percentage by weight, 58%-60% petroleum resin, 35.75% water, 2% polymer compound, and 2.25% emulsifier.
  • the emulsion is prepared so as to minimize the particle size in order to give the emulsion maximum penetrating capability.
  • the components are mixed in a colloid mill that provides for a particle size setting of 0.015-0.020. However, milling alone will not provide optimal preparation of the emulsion.
  • the base oil is heated to 200°-208° F. to increase the volume.
  • the water is heated to 120°-150° F. When the mixture is cooled to ambient temperature, the particle size of the emulsion is reduced.
  • a polymer in the amount of 2% by volume is added to the emulsion.
  • the polymer chosen for the preferred embodiment is styrene butadiene polymer, or unvulcanized synthetic virgin rubber.
  • the process of the present invention has shown excellent performance in field testing.
  • the emulsion of the present invention was applied to alternating sections of a new construction asphalt road surface.
  • the untreated sections of the road surface served as control areas.
  • the emulsion was applied to 300 foot long sections two feet wide centered on the longitudinal joint.
  • the application rate was 0.10 gallons per square yard.
  • Photographic records show marked differences in the condition of the surface. Those areas adjacent to the joints that were treated with the emulsion equaled or exceeded the performance of the highly compacted areas of the road surface away from the longitudinal joint. Those areas adjacent the joint that were not treated with the emulsion showed significant deterioration that required repair or replacement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Road Paving Structures (AREA)

Abstract

A composition used for sealing and strengthening the joints in an asphalt road surface and subsurface to prolong the useful life of the road utilizes a polymer modified cationic maltene emulsion containing polymer modified maltene oils and resins, and surfactants/and wetting agents. The emulsion is applied to the longitudinal joints and other joints in the asphalt pavement surface. The emulsion reduces voids in the asphalt pavement and chemically improves the asphalt binder properties, thereby altering the modulus of elasticity of the asphalt binder so that the resistance of the pavement to tension stress is increased, and the water absorption of the pavement is reduced.

Description

  • This application is a continuation (divisional) application claiming benefit of co-pending U.S. application Ser. No. 11/483,282, filed Jul. 7, 2006.
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates generally to road construction, and more particularly is a method of prolonging the useful life of a road surface by sealing and strengthening the joints created during the paving process.
  • 2. Description of the Prior Art
  • Highway paving is a huge industry. There are over 2.5 million miles of paved roads in the United States alone. Depending on the weather and level of usage the road surface may have to be repaired or replaced every 3-12 years. This represents a huge financial burden on the entity responsible for road maintenance.
  • One of the chief factors leading to premature road surface breakdown is cracking and disintegration around the joints between the sections (lanes) of asphalt pavement. There are two main causes leading to the formation of cracks in the joints between the lanes of asphalt pavement. The first area of premature deterioration causation is the temperature effect. First, the asphalt pavement shrinks as the ambient temperature drops during a seasonal temperature change. Asphalt pavements are strong when subjected to compressive loads; however, asphalt pavements do not have nearly as much resistance when subjected to tension (pulling apart) forces. The tension created by shrinkage, which occurs when the temperature decreases, is therefore very damaging to an asphalt surface, particularly around the joints. Second, the asphalt binder or glue used in the pavement deteriorates when subjected to heat. The manufacturing process used to make asphalt paving mixture by necessity subjects the asphalt binder material to high heat. Summer temperatures also heat the asphalt and contribute to the deterioration of the asphalt binder material, thereby reducing the resistance of the asphalt to stress, particularly to tension forces. The effects of the reduced resistance of the asphalt to cracking are most prevalent at the joint areas, where the asphalt pavement matrix is weakest.
  • The second chief cause of premature deterioration is the lack of compaction at the edges of a given asphalt pavement section. The area at and adjacent to the longitudinal joint of two asphalt highway lanes is difficult to compact during initial construction. The area to either side of the longitudinal joint (roughly plus or minus one foot from the joint) has less density or compaction than the balance of the pavement. The problem then is water and air intrusion into the area that is not as highly compacted. Water strips the asphalt coating from the asphalt pavement aggregate, thereby weakening the bond between coated aggregate pieces. In addition, water absorbed in the critical non-compacted area freezes in winter conditions, causing mechanical damage to the area. Air entry into the pavement structure accelerates oxidation of the asphalt binder reducing its glue-like properties.
  • Accordingly, it is an object of the present invention to provide a method of sealing and strengthening the joint areas in asphalt paved highways.
  • It is another object of the present invention to provide an in-depth sealing method that increases the water resistance of the asphalt paving material.
  • A further object of the present invention is to provide a sealant that not only seals the asphalt road surface, but also reduces internal voids in the asphalt beneath the road surface, providing an in-depth sealing effect that is not subject to traffic wear.
    • SUMMARY OF THE INVENTION
  • The present invention is a composition to seal the joints in an asphalt road surface and subsurface to prolong the useful life of the road. The composition utilizes a polymer modified cationic maltene emulsion containing polymer modified maltene oils and resins and surfactants/wetting agents. The emulsion is applied to the longitudinal joints in the asphalt pavement surface. The emulsion penetrates into the asphalt pavement, combining chemically with the asphalt coating on the aggregate, thereby altering the modulus of elasticity of the asphalt binder so that the resistance of the pavement structure to tension stress (low temperature cracking) is increased, and water absorption into the pavement is reduced.
  • An advantage of the present invention is that it significantly reduces the amount and magnitude of cracking damage to an asphalt road surface over and adjacent to joints.
  • Another advantage of the present invention is that it is easy to apply during new road surface construction.
  • A still further advantage of the present invention is that it is very cost effective in terms of resurfacing savings as compared to the cost of applying the sealing emulsion of the present invention.
  • These and other objects and advantages of the present invention will become apparent to those skilled in the art in view of the description of the best presently known mode of carrying out the invention as described herein and as illustrated in the drawings.
    • DETAILED DESCRIPTION OF THE INVENTION
  • The present invention is a composition for sealing and strengthening the joints in an asphalt road surface and subsurface to prolong the useful life of the road. The composition utilizes a polymer modified cationic maltene emulsion containing polymer modified maltene oils and resins, surfactants, and wetting agents.
  • The emulsion is applied to the longitudinal joints in the asphalt surface. When an asphalt road is constructed, the area around the center longitudinal joint or joints is difficult to properly compact. The joint itself, and a surrounding band approximately a foot wide on either side of the joint, cannot be compacted as thoroughly as the main body of the asphalt pavement. The asphalt pavement in the joint area is more porous than the other areas of the asphalt pavement, and is therefore more susceptible to water permeation, oxidation, and tension stress damage.
  • The emulsion is typically sprayed onto the road surface. A spray bar two to three feet wide and two to three inches in diameter, with one-eighth inch nozzles is used in the preferred embodiment to spray the emulsion onto the road surface. The application rate is controlled by a computerized flow manager, which allows the emulsion to be precisely applied to the joint area of the road surface. Once the flow rate computer has been set to the desired application rate, the application of the emulsion is very accurate due to the computer control of the flow, regardless of travel speed variations of the sprayer.
  • While the preferred embodiment of the invention uses an automated sprayer to apply the emulsion, any means suitable for application of a liquid emulsion could be effectively used provided the required accuracy of application is maintained.
  • After it has been applied to the asphalt pavement, the emulsion of the present invention reduces the voids in the asphalt pavement, both on the top surface and beneath the surface. The emulsion alters the modulus of elasticity of the binder in the asphalt pavement mixture, strengthening the asphalt binder and introducing rubber-like properties to the surface and below the surface throughout the joint area and the bordering band where the emulsion is applied. The increased elasticity of the asphalt pavement increases its resistance to tension induced stress. The application of the emulsion also reduces the water absorption of the asphalt pavement. These two factors, tension stress damage and water permeation, are the chief components of premature asphalt surface damage.
  • The emulsion is formed from selected oils and resins extracted from a crude oil source, with a polymer added at the mill or after the emulsion has been prepared. The base oil of the emulsion is a petroleum resin. In the preferred embodiment, Petroleum Resin C.A.S. 64742-04-7 or 64742-11-6 is chosen. The base resin is mixed with water, emulsifiers, and a polymer compound. In the preferred embodiment the polymer compound is Surfonic NPB95 or Witcolnol NP-100, and the emulsifier is E-11 Redicote or AA-57. The emulsion comprises, as a percentage by weight, 58%-60% petroleum resin, 35.75% water, 2% polymer compound, and 2.25% emulsifier. The maltene distribution ratio of the emulsion is defined in ASTM Method D-2006-70 as (PC+A1)/(S+A2), where PC=polar compounds, A1=first acidaffins, S=saturated hydrocarbons, and A2=second acidaffins. In the preferred embodiment, the maltene distribution ratio is between 0.2 and 0.6.
  • The emulsion is prepared so as to minimize the particle size in order to give the emulsion maximum penetrating capability. The components are mixed in a colloid mill that provides for a particle size setting of 0.015-0.020. However, milling alone will not provide optimal preparation of the emulsion. The base oil is heated to 200°-208° F. to increase the volume. The water is heated to 120°-150° F. When the mixture is cooled to ambient temperature, the particle size of the emulsion is reduced. In order to give the emulsion more rubber-like properties, a polymer in the amount of 2% by volume is added to the emulsion. The polymer chosen for the preferred embodiment is styrene butadiene polymer, or unvulcanized synthetic virgin rubber.
  • The process of the present invention has shown excellent performance in field testing. In a first test application, the emulsion of the present invention was applied to alternating sections of a new construction asphalt road surface. The untreated sections of the road surface served as control areas. The emulsion was applied to 300 foot long sections two feet wide centered on the longitudinal joint. The application rate was 0.10 gallons per square yard. After three years, visual inspection was made of the test surface. Photographic records show marked differences in the condition of the surface. Those areas adjacent to the joints that were treated with the emulsion equaled or exceeded the performance of the highly compacted areas of the road surface away from the longitudinal joint. Those areas adjacent the joint that were not treated with the emulsion showed significant deterioration that required repair or replacement.
  • The above disclosure is not intended as limiting. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the restrictions of the appended claims.

Claims (7)

1. A composition for sealing joints in an asphalt pavement surface comprising:
an emulsion formed from selected oils and resins extracted from a crude oil source; wherein
a base oil of said emulsion is a petroleum resin, and said base resin is mixed with water, at least one emulsifier, and a polymer compound, such that
said emulsion comprises 58%-60% by weight petroleum resin, 35.75% by weight water, 2% by weight polymer compound, and 2.25% by weight emulsifier.
2. The composition as defined in claim 1 wherein:
components of said emulsion are mixed in a colloid mill.
3. The composition as defined in claim 2 wherein:
said colloid mill provides for a particle size setting of 0.015-0.020.
4. The composition as defined in claim 1 wherein:
said base oil is heated to 200°-208° F., and said water is heated to 120°-150° F.
5. The composition as defined in claim 1 wherein:
said emulsion further comprises a selected polymer in the amount of 2% by volume.
6. The composition as defined in claim 5 wherein:
said polymer is styrene butadiene or an unvulcanized synthetic virgin rubber.
7. The composition as defined in claim 1 wherein:
a maltene distribution ratio of said emulsion is between 0.2 and 0.6
US11/732,730 2006-07-07 2007-04-04 Composition for sealing joints in road surfaces and subsurfaces Abandoned US20080008525A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/732,730 US20080008525A1 (en) 2006-07-07 2007-04-04 Composition for sealing joints in road surfaces and subsurfaces

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/483,282 US20080008828A1 (en) 2006-07-07 2006-07-07 Method of sealing joints in road surfaces and subsurfaces
US11/732,730 US20080008525A1 (en) 2006-07-07 2007-04-04 Composition for sealing joints in road surfaces and subsurfaces

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11/483,282 Continuation US20080008828A1 (en) 2006-07-07 2006-07-07 Method of sealing joints in road surfaces and subsurfaces

Publications (1)

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US20080008525A1 true US20080008525A1 (en) 2008-01-10

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US11/483,282 Abandoned US20080008828A1 (en) 2006-07-07 2006-07-07 Method of sealing joints in road surfaces and subsurfaces
US11/732,730 Abandoned US20080008525A1 (en) 2006-07-07 2007-04-04 Composition for sealing joints in road surfaces and subsurfaces
US12/315,586 Active 2026-12-06 US7927038B2 (en) 2006-07-07 2008-12-04 Method of sealing joints in road surfaces and subsurfaces
US13/048,800 Active US8172479B2 (en) 2006-07-07 2011-03-15 Composition for sealing joints in road surfaces and subsurfaces

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US11/483,282 Abandoned US20080008828A1 (en) 2006-07-07 2006-07-07 Method of sealing joints in road surfaces and subsurfaces

Family Applications After (2)

Application Number Title Priority Date Filing Date
US12/315,586 Active 2026-12-06 US7927038B2 (en) 2006-07-07 2008-12-04 Method of sealing joints in road surfaces and subsurfaces
US13/048,800 Active US8172479B2 (en) 2006-07-07 2011-03-15 Composition for sealing joints in road surfaces and subsurfaces

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US (4) US20080008828A1 (en)
CA (1) CA2558935C (en)

Cited By (11)

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US20110114186A1 (en) * 2009-11-13 2011-05-19 Jim Farnell Methods and arrangement for handling asphalt emulsion
CN102535304A (en) * 2012-03-19 2012-07-04 交通运输部公路科学研究所 Crack pressing tape for cracks of asphalt road surface and preparation method of crack pressing tape
US8556536B2 (en) 2009-01-02 2013-10-15 Heatwurx, Inc. Asphalt repair system and method
US8562247B2 (en) 2009-01-02 2013-10-22 Heatwurx, Inc. Asphalt repair system and method
USD700633S1 (en) 2013-07-26 2014-03-04 Heatwurx, Inc. Asphalt repair device
US8801325B1 (en) 2013-02-26 2014-08-12 Heatwurx, Inc. System and method for controlling an asphalt repair apparatus
US20150197897A1 (en) * 2014-01-14 2015-07-16 Advanced Concrete Technologies Llc Pavement joints and methods for treating the same
US9416499B2 (en) 2009-12-31 2016-08-16 Heatwurx, Inc. System and method for sensing and managing pothole location and pothole characteristics
US20160265171A1 (en) * 2015-03-10 2016-09-15 Heritage Research Group Apparatus and Method for Applying Asphalt Binder Compositions Including Void Reducing Asphalt Membrane Compositions for Paving Applications
US20170165188A1 (en) * 2014-07-22 2017-06-15 Perachem Limited Hair conditioning compositions
US10364535B2 (en) 2015-03-09 2019-07-30 Heritage Research Group Void reducing asphalt membrane composition, method and apparatus for asphalt paving applications

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CN102444067A (en) * 2011-10-31 2012-05-09 华南理工大学 Composite seal coat for pavement maintenance
US20140356526A1 (en) * 2013-05-28 2014-12-04 Invia Pavement Technologies, LLC Composition and method for roads, parking lots, and driving surfaces
US9435084B2 (en) 2013-06-11 2016-09-06 Northeast Asphalt, Inc. Paving machine
CN109311751B (en) 2016-06-14 2021-11-09 海瑞研发部 Improved tie-layer and stress absorbing film interlayer applied adhesive composition for road construction
CN106320127B (en) * 2016-08-18 2018-09-07 陕西长大博源公路养护科技有限公司 A kind of reclaimed bituminous pavement
CA3104333A1 (en) * 2018-07-02 2020-01-09 Heritage Research Group Composition and method for treating an asphalt pavement with a void-filling asphalt emulsion

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US8556536B2 (en) 2009-01-02 2013-10-15 Heatwurx, Inc. Asphalt repair system and method
US8562247B2 (en) 2009-01-02 2013-10-22 Heatwurx, Inc. Asphalt repair system and method
US8714871B2 (en) 2009-01-02 2014-05-06 Heatwurx, Inc. Asphalt repair system and method
US8664281B2 (en) * 2009-11-13 2014-03-04 Pacific Emulsions, Inc. Methods and arrangement for handling asphalt emulsion
US20110114186A1 (en) * 2009-11-13 2011-05-19 Jim Farnell Methods and arrangement for handling asphalt emulsion
US9022686B2 (en) 2009-12-31 2015-05-05 Heatwurx, Inc. System and method for controlling an asphalt repair apparatus
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US7927038B2 (en) 2011-04-19
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US20100143035A1 (en) 2010-06-10
CA2558935A1 (en) 2008-01-07

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