CN109694681A - A kind of response type filling cut of asphaltum road surface agent and preparation method thereof - Google Patents
A kind of response type filling cut of asphaltum road surface agent and preparation method thereof Download PDFInfo
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- CN109694681A CN109694681A CN201811651504.4A CN201811651504A CN109694681A CN 109694681 A CN109694681 A CN 109694681A CN 201811651504 A CN201811651504 A CN 201811651504A CN 109694681 A CN109694681 A CN 109694681A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Epoxy Resins (AREA)
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Abstract
The invention discloses a kind of response type filling cut of asphaltum road surface agent and preparation method thereof.The cementation of fissures agent is grouped as by two groups of A, B；Component A proportion are as follows: 48-63 parts of epoxy resin；15-20 parts of reactive diluent, 5-8 parts of non-activated thinner；5-10 parts of carbon black；10-20 parts of calcium powder；1-5 parts of plasticizer；0.1-0.3 parts of age resister；0.1-0.3 parts of ultraviolet absorbing agent；B component proportion are as follows: 45-55 parts of polyamide；15-20 parts of SBS modified pitch；5-10 parts of non-activated thinner；15-20 parts of calcium powder, 5-10 parts of carbon black, 1-4 parts of plasticizer；2,4,6- tri- 1-3 parts of (dimethylamino methyl) phenol；0.1-0.3 parts of age resister.Cementation of fissures agent prepared by the present invention has good cohesive action to asphalt pavement crack section, while having good toughness, realizes that the long-acting of fracture is squeegeeed and waterproof, easy for construction, cost is relatively low.
Description
Technical field
The invention belongs to building material technical field, in particular to a kind of response type filling cut of asphaltum road surface agent and its preparation side
Method.
Background technique
Asphalt concrete pavement is durable since its driving is comfortable, and it is extensive to be easy to the domestic and international road construction person of curing quilt
Using 95% or more share is occupied in high-grade highway construction at home.In application process due to mix-design is improper,
The factors such as climate condition influences or construction processing is not in place can cause road surface different degrees of crack, the appearance in crack occur
The waterproof performance and service life on road surface are seriously affected, maintenance work amount and maintenance costs are increased.Frequently with crack repairing side
Formula, which has, pastes seamed belt, perfusion heated bitumen, asphalt reperfusion cold-repairing material etc., these processing are road pavement skin patchings, cannot be fine
Along crack permeate and the section on crack both sides is carried out to cohere healing, be extremely difficult to mesh not only waterproof but also that road surface can be repaired
's.
Summary of the invention
The object of the invention is exactly to overcome above-mentioned the deficiencies in the prior art, provide a kind of response type filling cut of asphaltum road surface agent and its
Preparation method.
Response type filling cut of asphaltum road surface agent of the present invention is made of component A and B component according to mass ratio 1:1；
The component A is according to proportion by weight are as follows: 48-63 parts of epoxy resin；It is 15-20 parts of reactive diluent, nonactive dilute
Release 5-8 parts of agent；5-10 parts of carbon black；10-20 parts of calcium powder；1-5 parts of plasticizer；0.1-0.3 parts of age resister；Ultraviolet absorbing agent
0.1-0.3 parts；
The B component is according to proportion by weight are as follows: 45-55 parts of polyamide；15-20 parts of SBS modified pitch；Inactive diluents
5-10 parts of agent；15-20 parts of calcium powder, 5-10 parts of carbon black, 1-4 parts of plasticizer；2,4,6-three (dimethylamino methyl) phenol (DMP-
30) 1-3 parts；0.1-0.3 parts of age resister.
A, two compositional viscosity of B is controlled 80-120s (applying 4 glasss).
The non-activated thinner is methanol, ethyl alcohol, acetone, cyclohexanone, metacetone, butanone；Reactive diluent is
Monocycle or polyepoxy low molecular compound specifically include propylene oxide, epoxychloropropane, propylene oxide ethylether, butyl contracting
Water glycerin ether, propylene oxide methyl ether, diglycidyl ether, phenyl glycidyl ether.
The epoxy resin is E44 or E51；Polyamide is the epoxy curing agent that active hydrogen equivalent weight is 120-200.
The plasticizer is dioctyl phthalate (DOP) or dibutyl phthalate (DBP)；Ultraviolet radiation absorption
Agent is VU-235, VU-236, VU-237；Age resister is 4 [β-(3,5- di-t-butyl -4- aminomethyl phenyl) propionic acid] Ji Wusi
Alcohol, 4-6 bis- (12 sulfidomethyl) o-cresol.
The carbon black is selected from any one of N326, N330, N339.
The SBS modified pitch is No. 90 modified pitch of polymer quality content 12-16%.
The calcium powder is heavy calcium carbonate, fineness 300-600 mesh, CaCO3Content is greater than 90%.
Above-mentioned response type filling cut of asphaltum road surface agent the preparation method comprises the following steps:
(1) it prepares component A: epoxy resin is added in reactive diluent and non-activated thinner, add again after being sufficiently stirred
Enter carbon black, calcium powder and plasticizer to futher stir, then sequentially add age resister and ultraviolet absorbing agent, is sufficiently stirred and adjusts
Section viscosity makes it suitable for constructing, and filters；
(2) it prepares B component: SBS modified pitch being added in non-activated thinner, dissolution is sufficiently stirred, adds polyamides
Amine, calcium powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, add 2,4,6- tri- (dimethylamino methyl) phenol and
Age resister adjusts viscosity after being sufficiently stirred again；
(3) two component of A, B is uniformly mixed by 1:1 mass ratio, road pavement crack carries out infiltration repairing.
The main film forming matter of the present invention is epoxy resin, and it is anti-by solidification that epoxy resin solution mixes liquid polyamide
It answers, the bonding way of cementation of fissures agent Yu pavement crack section can be improved, improve cementation of fissures agent to the binding force on section both sides；In addition,
Epoxy group and hydroxyl in epoxy resin assign resin reaction, and resin cured matter is made to have very strong cohesive force and bonding force,
Help to improve wellability and adhesion strength, introduce SBS modified pitch be on the one hand conducive to cementation of fissures agent with it is old on the section of crack
Pitch interpenetrates, and on the other hand SBS therein can play the effect for improving cementation of fissures agent elasticity, guarantees that cementation of fissures agent both can be right
Crack section securely coheres and can guarantee itself elasticity, can dissolve in use process because external force causes crack to become
Change the destruction generated, keeps its cementation of fissures effect durable.Cementation of fissures agent of the present invention strictly forbids two component of A, B before cementation of fissures construction
Contact, otherwise can antedating response, influence the solidification of cementation of fissures agent.
The present invention is a kind of response type filling cut of asphaltum road surface agent, has good cohesive action to asphalt pavement crack section,
There is good toughness simultaneously, realize that the long-acting of fracture is squeegeeed and waterproof effect, easy for construction, cost is relatively low.
Specific embodiment
Embodiment 1:
Prepare A, each 100g of B component:
Component A: epoxy resin (E44) 55g；Propylene oxide 15g, methanol 7.7g；Carbon black (N326) 7g；Calcium powder 12g；Adjacent benzene
Diformazan dioctyl phthalate (DOP) 3g；4 [β-(3,5- di-t-butyl -4- aminomethyl phenyl) propionic acid] pentaerythrite 0.2g；VU-
2350.1g；Total number is 100g；
B component: polyamide 48g；SBS modified pitch 15g；Methanol 6g；Calcium powder 18g, carbon black (N326) 10g, O-phthalic
Dioctyl phthalate (DOP) 1g；2,4,6-three (dimethylamino methyl) phenol (DMP-30) 1.8g；4 [β-(3,5- di-t-butyl -4-
Aminomethyl phenyl) propionic acid] pentaerythrite 0.2g；Total number is 100g；A, B bi-component is when in use according to the ratio of mass ratio 1:1
It is uniformly mixed.
Preparation component A: epoxy resin is added into diluent, carbon black, filler and plasticizer are added after being sufficiently stirred
It futher stirs, then sequentially adds age resister and ultraviolet absorbing agent, be sufficiently stirred and adjust viscosity and make it suitable for filling
Seam construction；
Preparation B component: SBS modified pitch is added in non-activated thinner, dissolution is sufficiently stirred, add polyamide, calcium
Powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, and adds 2,4,6-three (dimethylamino methyl) phenol and anti-ageing
Agent adjusts viscosity after being sufficiently stirred again.
Embodiment 2:
Prepare A, each 100g of B component:
Component A: epoxy resin (E51) 50g；Epoxychloropropane 17g, ethyl alcohol 8g；Carbon black (N330) 8g；Calcium powder 15.7g；It is adjacent
Dibatyl phithalate (DBP) 1g；4-6 bis- (12 sulfidomethyl) o-cresol 0.1g；VU-236 0.2g；Total number is 100g；
B component: polyamide 45g；SBS modified pitch 16g；Ethyl alcohol 10g；Calcium powder 15g, carbon black (N330) 8g, O-phthalic
Dibutyl phthalate (DBP) 4g；2,4,6-three (dimethylamino methyl) phenol (DMP-30) 1.7g；4-6 bis- (12 sulfidomethyl) neighbour's first
Phenol 0.3g；Total number is 100g；A, B bi-component is uniformly mixed according to the ratio of mass ratio 1:1 when in use.
Preparation component A: epoxy resin is added into diluent, carbon black, filler and plasticizer are added after being sufficiently stirred
It futher stirs, then sequentially adds age resister and ultraviolet absorbing agent, be sufficiently stirred and adjust viscosity and make it suitable for filling
Seam construction；
Preparation B component: SBS modified pitch is added in non-activated thinner, dissolution is sufficiently stirred, add polyamide, calcium
Powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, and adds 2,4,6-three (dimethylamino methyl) phenol and anti-ageing
Agent adjusts viscosity after being sufficiently stirred again.
Embodiment 3:
Prepare A, each 100g of B component:
Component A: epoxy resin (E44) 56g；Propylene oxide ethylether 16g, acetone 5g；Carbon black (N339) 10g；Calcium powder
10g；Dioctyl phthalate (DOP) 2g；4-6 bis- (12 sulfidomethyl) o-cresol 0.2g；VU-237 0.2g；Total number is
100g；
B component: polyamide 46g；SBS modified pitch 20g；Acetone 5g；Calcium powder 17g, carbon black (N339) 5.9g, O-phthalic
Dioctyl phthalate (DOP) 3g；2,4,6-three (dimethylamino methyl) phenol (DMP-30) 3g；4-6 bis- (12 sulfidomethyl) o-cresol
0.1g；Total number is 100g；A, B bi-component is uniformly mixed according to the ratio of mass ratio 1:1 when in use.
Preparation component A: epoxy resin is added into diluent, carbon black, filler and plasticizer are added after being sufficiently stirred
It futher stirs, then sequentially adds age resister and ultraviolet absorbing agent, be sufficiently stirred and adjust viscosity and make it suitable for filling
Seam construction；
Preparation B component: SBS modified pitch is added in non-activated thinner, dissolution is sufficiently stirred, add polyamide, calcium
Powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, and adds 2,4,6-three (dimethylamino methyl) phenol and anti-ageing
Agent adjusts viscosity after being sufficiently stirred again.
Embodiment 4:
Prepare A, each 100g of B component:
Component A: epoxy resin (E44) 62g；Butyl glycidyl ether 15.6g, cyclohexanone 5g；Carbon black (N330) 5g；Filler
11g；Dibutyl phthalate (DBP) 1g；4 [β-(3,5- di-t-butyl -4- aminomethyl phenyl) propionic acid] pentaerythrite 0.3g；
VU-237 0.1g；Total number is 100g；
B component: polyamide 55g；SBS modified pitch 17g；Cyclohexanone 5g；Calcium powder 15g, carbon black (N330) 5g, O-phthalic
Dibutyl phthalate (DBP) 1.9g；2,4,6-three (dimethylamino methyl) phenol (DMP-30) 1g；4 [β-(3,5- di-t-butyl -4-
Aminomethyl phenyl) propionic acid] pentaerythrite 0.1g；Total number is 100g；A, B bi-component is when in use according to the ratio of mass ratio 1:1
It is uniformly mixed.
Preparation component A: epoxy resin is added into diluent, carbon black, filler and plasticizer are added after being sufficiently stirred
It futher stirs, then sequentially adds age resister and ultraviolet absorbing agent, be sufficiently stirred and adjust viscosity and make it suitable for filling
Seam construction；
Preparation B component: SBS modified pitch is added in non-activated thinner, dissolution is sufficiently stirred, add polyamide, calcium
Powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, and adds 2,4,6-three (dimethylamino methyl) phenol and anti-ageing
Agent adjusts viscosity after being sufficiently stirred again.
Embodiment 5:
Prepare A, each 100g of B component:
Component A: epoxy resin (E51) 63g；Propylene oxide methyl ether 15g, metacetone 5g；Carbon black (N330) 5g；Filler
10g；Dioctyl phthalate (DOP) 1.7g；4-6 bis- (12 sulfidomethyl) o-cresol 0.1g；VU-236 0.3g；Total number
It is 100g；
B component: polyamide 45g；SBS modified pitch 18g；Metacetone 6g；Calcium powder 20g, carbon black (N330) 7g, adjacent benzene two
Formic acid dioctyl ester (DOP) 1.8g；2,4,6-three (dimethylamino methyl) phenol (DMP-30) 2g；4-6 bis- (12 sulfidomethyl) is adjacent
Cresols 0.2g；Total number is 100g；A, B bi-component is uniformly mixed according to the ratio of mass ratio 1:1 when in use.
Preparation component A: epoxy resin is added into diluent, carbon black, filler and plasticizer are added after being sufficiently stirred
It futher stirs, then sequentially adds age resister and ultraviolet absorbing agent, be sufficiently stirred and adjust viscosity and make it suitable for filling
Seam construction；
Preparation B component: SBS modified pitch is added in non-activated thinner, dissolution is sufficiently stirred, add polyamide, calcium
Powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, and adds 2,4,6-three (dimethylamino methyl) phenol and anti-ageing
Agent adjusts viscosity after being sufficiently stirred again.
Embodiment 6:
Prepare A, each 100g of B component:
Component A: epoxy resin (E44) 53.7g；Phenyl glycidyl ether 20g, butanone 6g；Carbon black (N326) 6g；Filler
12g；Dibutyl phthalate (DBP) 2g；4 [β-(3,5- di-t-butyl -4- aminomethyl phenyl) propionic acid] pentaerythrite 0.2g；
VU-235 0.1g；Total number is 100g；
B component: polyamide 50g；SBS modified pitch 16g；Butanone 8g；Calcium powder 16g, carbon black (N326) 6g, phthalic acid
Dibutyl ester (DBP) 2.7g；2,4,6-three (dimethylamino methyl) phenol (DMP-30) 1g；4 [β-(3,5- di-t-butyl -4- first
Base phenyl) propionic acid] pentaerythrite 0.3g；Total number is 100g；A, B bi-component is mixed according to the ratio of mass ratio 1:1 when in use
It closes uniform.
Preparation component A: epoxy resin is added into diluent, carbon black, filler and plasticizer are added after being sufficiently stirred
It futher stirs, then sequentially adds age resister and ultraviolet absorbing agent, be sufficiently stirred and adjust viscosity and make it suitable for filling
Seam construction；
Preparation B component: SBS modified pitch is added in non-activated thinner, dissolution is sufficiently stirred, add polyamide, calcium
Powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, and adds 2,4,6-three (dimethylamino methyl) phenol and anti-ageing
Agent adjusts viscosity after being sufficiently stirred again.
Embodiment 7:
Prepare A, each 100g of B component:
Component A: epoxy resin (E51) 48g；Diglycidyl ether 15g, acetone 5g；Carbon black (N339) 6.6g；Filler 20g；
Dioctyl phthalate (DOP) 5g；4-6 bis- (12 sulfidomethyl) o-cresol 0.1g；VU-237 0.3g；Total number is 100g；
B component: polyamide 52g；SBS modified pitch 17g；Acetone 7g；Calcium powder 15g, carbon black (N339) 5.8g, O-phthalic
Dioctyl phthalate (DOP) 2g；2,4,6-three (dimethylamino methyl) phenol (DMP-30) 1g；4-6 bis- (12 sulfidomethyl) o-cresol
0.2g；Total number is 100g；A, B bi-component is uniformly mixed according to the ratio of mass ratio 1:1 when in use.
Preparation component A: epoxy resin is added into diluent, carbon black, filler and plasticizer are added after being sufficiently stirred
It futher stirs, then sequentially adds age resister and ultraviolet absorbing agent, be sufficiently stirred and adjust viscosity and make it suitable for filling
Seam construction；
Preparation B component: SBS modified pitch is added in non-activated thinner, dissolution is sufficiently stirred, add polyamide, calcium
Powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, and adds 2,4,6-three (dimethylamino methyl) phenol and anti-ageing
Agent adjusts viscosity after being sufficiently stirred again.
Claims (8)
1. a kind of response type filling cut of asphaltum road surface agent, which is characterized in that it is made of component A and B component according to mass ratio 1:1；
The component A is according to proportion by weight are as follows: 48-63 parts of epoxy resin；15-20 parts of reactive diluent, non-activated thinner
5-8 parts；5-10 parts of carbon black；10-20 parts of calcium powder；1-5 parts of plasticizer；0.1-0.3 parts of age resister；Ultraviolet absorbing agent 0.1-
0.3 part；
The B component is according to proportion by weight are as follows: 45-55 parts of polyamide；15-20 parts of SBS modified pitch；Non-activated thinner 5-
10 parts；15-20 parts of calcium powder, 5-10 parts of carbon black, 1-4 parts of plasticizer；2,4,6- tri- 1-3 parts of (dimethylamino methyl) phenol；It is anti-ageing
0.1-0.3 parts of agent.
2. response type filling cut of asphaltum road surface agent according to claim 1, which is characterized in that non-activated thinner be methanol,
Ethyl alcohol, acetone, cyclohexanone, metacetone, butanone；Reactive diluent is monocycle or polyepoxy low molecular compound, specific packet
Include propylene oxide, epoxychloropropane, propylene oxide ethylether, butyl glycidyl ether, propylene oxide methyl ether, 2-glycidyl
Ether, phenyl glycidyl ether.
3. response type filling cut of asphaltum road surface agent according to claim 1, which is characterized in that epoxy resin is E44 or E51；
Polyamide is the epoxy curing agent that active hydrogen equivalent weight is 120-200.
4. response type filling cut of asphaltum road surface agent according to claim 1, which is characterized in that plasticizer is phthalic acid two
Monooctyl ester or dibutyl phthalate；Ultraviolet absorbing agent is VU-235, VU-236, VU-237；Age resister is 4 [β-(3,5-
Di-t-butyl -4- aminomethyl phenyl) propionic acid] pentaerythrite, 4-6 bis- (12 sulfidomethyl) o-cresol.
5. response type filling cut of asphaltum road surface agent according to claim 1, which is characterized in that the carbon black be selected from N326,
Any one of N330, N339.
6. response type filling cut of asphaltum road surface agent according to claim 1, which is characterized in that the SBS modified pitch is poly-
Close No. 90 modified pitch of amount of substance content 12-16%.
7. response type filling cut of asphaltum road surface agent according to claim 1, which is characterized in that the calcium powder is powdered whiting
Powder, fineness 300-600 mesh, CaCO3Content is greater than 90%.
8. the preparation method of response type filling cut of asphaltum road surface agent according to claim 1, which is characterized in that its specific method
Step are as follows:
(1) it prepares component A: epoxy resin being added in reactive diluent and non-activated thinner, adds charcoal after being sufficiently stirred
Black, calcium powder and plasticizer futher stir, and then sequentially add age resister and ultraviolet absorbing agent, are sufficiently stirred and adjust viscous
Degree makes it suitable for constructing, and filters；
(2) it prepares B component: SBS modified pitch being added in non-activated thinner, dissolution is sufficiently stirred, adds polyamide, calcium
Powder, carbon black and plasticizer, being sufficiently stirred makes it be uniformly dispersed, and adds 2,4,6- tri- (dimethylamino methyl) phenol and anti-aging
Agent adjusts viscosity after being sufficiently stirred again；
(3) two component of A, B is uniformly mixed by 1:1 mass ratio, road pavement crack carries out infiltration repairing.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110862742A (en) * | 2019-11-13 | 2020-03-06 | 宁德沙埕湾跨海高速公路有限责任公司 | High-permeability modified epoxy asphalt for cement concrete bridge deck pavement and application thereof |
| CN111718153A (en) * | 2020-04-26 | 2020-09-29 | 上海市政工程设计研究总院（集团）有限公司 | Epoxy modified cold-patch asphalt mixture |
| CN111718154A (en) * | 2020-04-26 | 2020-09-29 | 上海市政工程设计研究总院（集团）有限公司 | Preparation method of epoxy modified cold-patch asphalt mixture |
| CN114250058A (en) * | 2020-12-31 | 2022-03-29 | 山西省交通科技研发有限公司 | Double-component pouring sealant for repairing cracks of asphalt concrete pavement and preparation method thereof |
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| 宓永宁，娄宗科: "《建筑材料》", 31 August 2006, 中国农业出版社 * |
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| CN111718153A (en) * | 2020-04-26 | 2020-09-29 | 上海市政工程设计研究总院（集团）有限公司 | Epoxy modified cold-patch asphalt mixture |
| CN111718154A (en) * | 2020-04-26 | 2020-09-29 | 上海市政工程设计研究总院（集团）有限公司 | Preparation method of epoxy modified cold-patch asphalt mixture |
| CN114250058A (en) * | 2020-12-31 | 2022-03-29 | 山西省交通科技研发有限公司 | Double-component pouring sealant for repairing cracks of asphalt concrete pavement and preparation method thereof |
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Application publication date: 20190430 |