CN105778120A - Method for preparing emulsified asphalt with hydrophobic performance after demulsification - Google Patents
Method for preparing emulsified asphalt with hydrophobic performance after demulsification Download PDFInfo
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- CN105778120A CN105778120A CN201610192996.XA CN201610192996A CN105778120A CN 105778120 A CN105778120 A CN 105778120A CN 201610192996 A CN201610192996 A CN 201610192996A CN 105778120 A CN105778120 A CN 105778120A
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- emulsified asphalt
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a method for preparing emulsified asphalt with hydrophobic performance after demulsification. The emulsified asphalt is prepared from matrix asphalt, a modifying agent, a modification stabilizer, an emulsifier, a hydrophobic agent, an emulsification stabilizer and water, has hydrophobic performance after demulsification, and has a contact angle improved by 14-22 degrees in comparison with common emulsified asphalt after demulsification while the requirement for pavement performance is guaranteed. The emulsified asphalt can be used for preparing a fog sealing layer, a slurry sealing layer, a pavement regeneration layer and the like having high contact angles on the surface of pavement with serious water damage by distributing, mixing and other modes. The hydrophobic emulsified asphalt prepared pavement maintenance layer has the advantages that (1) moisture is effectively prevented from infiltrating inside the pavement, so that pavement diseases caused by water damage can be avoided; and (2) the freezing adhesive strength of pavement-ice layer can be reduced, and the phenomenon of snow and ice accumulation on the pavement in winter can be reduced.
Description
[technical field]
The present invention relates to a kind of road emulsified bituminous materials, there is after being specifically related to a kind of breakdown of emulsion the emulsifying drip of hydrophobic performance
Blue or green preparation method.
[background technology]
The hydrophobic performance on highway pavement top layer has a significant impact for the character of use tool of road.In the pavement disease side of preventing
Face, the road surface that hydrophobicity is stronger can effectively prevent moisture from penetrating into inside pavement structure, prevent road surface Early tubal pregnancy；For cold
For district's highway, the road surface that hydrophobicity is stronger has more weak road surface-ice and snow layer adhesion strength, is conducive to quickly carrying out snow removing and supports
Nurse makees.Material hydrophobic performance is in contact with it angle positive correlation, for the bituminous paving that China commonly uses at present, and road table bitumen layer
Contact angle is generally 109 °.
Emulsified asphalt be Colophonium and emulsifying agent under certain process acts, generate oil-in-water or water in oil liquid bitumen.
Having excellent mobile performance and room temperature workability before emulsified asphalt breakdown of emulsion, after breakdown of emulsion, emulsified asphalt mainly shows Colophonium
Character, there is desirable viscosity and stiffness.
[summary of the invention]
It is an object of the invention to overcome above-mentioned deficiency, it is provided that there is after a kind of breakdown of emulsion the system of the emulsified asphalt of hydrophobic performance
Preparation Method, it is possible to solve that road surface Moisture Damage, road surface-ice and snow adhesion strength be excessive and road surface dust stratification etc. is a series of due to road table
The problem that hydrophobicity deficiency causes.
In order to achieve the above object, the present invention comprises the following steps:
Step one, according to mass fraction, adds 31.5～38.5 parts of modifications after 867～1060 parts of matrix pitch heating
Agent, and stir swelling, obtain substance A；
Step 2, stirs after adding 0.9～1.1 part of modified stabilizer in substance A, and insulation is grown, and obtains material
B；
Step 3, after 419～591 parts of tap waters or distilled water are heated, add 27.7～33.8 parts of emulsifying agents and 1.4～
1.7 parts of emulsion stabilizers, and stir, adding dilute hydrochloric acid to body pH value is 3.5～4.5 acquisition soap lyes；
1100～900 parts of substance Bs are added in the soap lye after 484～667 parts of heating, are stirring evenly and then adding into by step 4
Water-repelling agent also stirs, it is thus achieved that have the emulsified asphalt of hydrophobic performance after breakdown of emulsion.
In described step one, matrix pitch adds modifying agent after being heated to 160～170 DEG C, stirs swelling 1～2h.
In described step one, stating matrix pitch is 70#, 90# or 110# Colophonium, and modifying agent is styrene butadiene benzene
Ethylene or SBR styrene butadiene rubbers block copolymer.
In described step 2, stirring uses high-speed shearing machine, shears 40～70min before adding modified stabilizer in substance A,
Shearing 10～20min after adding modified stabilizer in substance A, 1h is grown in insulation.
In described step 2, modified stabilizer is sulfur.
In described step 3, water temperature is 60～70 DEG C.
In described step 3, emulsifying agent is surfactant.
In described step 4, soap lye temperature is 70～80 DEG C.
In described step 4, water-repelling agent is 703 room temperature vulcanized silicone rubbers, 704 room temperature vulcanized silicone rubbers or 705 room temperature vulcanizations
Silicone rubber.
Compared with prior art, the emulsified asphalt prepared by the present invention has hydrophobic performance after breakdown of emulsion, is ensureing that road is used
While performance meets requirement, contact angle improves 14～22 ° than after general emulsified asphalt breakdown of emulsion, has after breakdown of emulsion prepared by the present invention
There is the emulsified asphalt of hydrophobic performance, can be had relatively in the road surface preparation that Moisture Damage is serious by the mode such as spread, mix
The mist sealing of high contact angle, slurry seal, pavement recycling layer etc., by this hydrophobic emulsified asphalt prepare maintenance of surface layer have with
Lower advantage: 1) can effectively prevent moisture content from penetrating into inside road surface, thus avoid road surface to produce disease due to Moisture Damage；2) can drop
The Freezing adhesive strength of low road surface-ice sheet, reduces road snow icing phenomena in winter.
[accompanying drawing explanation]
Fig. 1 is the emulsified asphalt fluorescent microscopy images prepared by the present invention；Wherein, 1a is common emulsified asphalt；1b is
Hydrophobic emulsified asphalt；
Fig. 2 is the emulsified asphalt composition form schematic diagram prepared by the present invention；Wherein, 2a is water bag Colophonium oil droplet；2b is
Water bag water-repelling agent；2c is water bag Colophonium oil droplet/water-repelling agent.
[detailed description of the invention]
Embodiment 1:
964 parts of Kelamayi 90# Colophoniumes are heated to 160～170 DEG C, add 35 parts of styrene butadiene styrene
Rubber block copolymers, stirs swelling 1h, uses high-speed shearing machine to shear 40min, continues to shear 10min after adding 1 part of sulfur,
Insulation is grown 1h and is obtained modified pitch；By 466 parts of tap water heatings to 60～70 DEG C, add 30.8 parts of surfactants, 1.5 parts
Calcium chloride, shear agitation is uniform, and adding dilute hydrochloric acid to liquid pH value is 3.5～4.5 acquisition soap lyes；1000 parts of modified pitch are delayed
Among slow addition 70～80 DEG C of soap lyes of 538.5 parts of insulations, use high-speed shearing machine that modified asphalt shearing is scattered in soap lye simultaneously
Among, after modified pitch is all poured in soap lye and sheared uniformly, add 40 part of 703 room temperature vulcanized silicone rubber and continue to shear
20min has the emulsified asphalt of hydrophobic performance after obtaining breakdown of emulsion.
Embodiment 2:
1060 parts of SK90# Colophoniumes are heated to 160～170 DEG C, add 38.5 parts of styrene butadiene ribber blocks altogether
Polymers, stirs swelling 2h, uses high-speed shearing machine to shear 70min, continues to shear 20min after adding 1.1 parts of sulfur, and insulation is grown
1h obtains modified pitch；By 513 parts of tap water heatings to 60～70 DEG C, add 33.8 parts of surfactants, 1.7 parts of polyacrylamides
Amine, shear agitation is uniform, and adding dilute hydrochloric acid to liquid pH value is 3.5～4.5 acquisition soap lyes；1100 parts of modified pitch are slowly added
Enter among 70～80 DEG C of soap lyes of 592.3 parts of insulations, use high-speed shearing machine to be scattered among soap lye by modified asphalt shearing simultaneously,
After modified pitch is all poured in soap lye and sheared uniformly, add 44 part of 705 room temperature vulcanized silicone rubber and continue shearing 20min and obtain
There is after obtaining breakdown of emulsion the emulsified asphalt of hydrophobic performance.
Embodiment 3:
867.6 parts of SK90# Colophoniumes are heated to 160～170 DEG C, add 31.5 parts of styrene butadiene styrene rubbers
Glue block copolymer, stirs swelling 1.5h, uses high-speed shearing machine to shear 60min, continues to shear after adding 0.9 part of sulfur
15min, insulation is grown 1h and is obtained modified pitch；419 parts of distilled water are heated to 60～70 DEG C, add 27.7 parts of surface activitys
Agent, 1.4 parts of polyacrylamides, shear agitation is uniform, and adding dilute hydrochloric acid to liquid pH value is 3.5～4.5 acquisition soap lyes；By 900
Part modified pitch is slowly added among 70～80 DEG C of soap lyes of 484 parts of insulations, uses high-speed shearing machine by modified asphalt shearing simultaneously
It is scattered among soap lye, after modified pitch is all poured in soap lye and sheared uniformly, adds 36 part of 703 room temperature vulcanized silicone rubber also
Continue to shear the emulsified asphalt after 20min obtains breakdown of emulsion with hydrophobic performance.
Embodiment 4:
964 parts of SK90# Colophoniumes are heated to 160～170 DEG C, add 35 parts of styrene butadiene styrene rubber inlaids
Section copolymer, stirs swelling 1.5h, uses high-speed shearing machine to shear 60min, continues to shear 15min, insulation after adding 1 part of sulfur
Grow 1h and obtain modified pitch；486 parts of distilled water are heated to 60～70 DEG C, add 30.8 parts of surfactants, 1.5 parts poly-third
Acrylamide, shear agitation is uniform, and adding dilute hydrochloric acid to liquid pH value is 3.5～4.5 acquisition soap lyes；1000 parts of modified pitch are delayed
Slow add among 70～80 DEG C of soap lyes of 538 parts of insulations, use simultaneously high-speed shearing machine modified asphalt shearing is scattered in soap lye it
In, after modified pitch is all poured in soap lye and sheared uniformly, add 20 part of 703 room temperature vulcanized silicone rubber and continue to shear
20min has the emulsified asphalt of hydrophobic performance after obtaining breakdown of emulsion.
Embodiment 5:
964 parts of Kelamayi 90# Colophoniumes are heated to 160～170 DEG C, add 35 parts of styrene butadiene ribber blocks
Copolymer, stirs swelling 1h, uses high-speed shearing machine to shear 55min, continues to shear 20min after adding 1 part of sulfur, and insulation is grown
1h obtains modified pitch；By 446 parts of tap water heatings to 60～70 DEG C, add 30.8 parts of surfactants, 1.5 parts of calcium chloride,
Shear agitation is uniform, and adding dilute hydrochloric acid to liquid pH value is 3.5～4.5 acquisition soap lyes；1000 parts of modified pitch are slowly added into
Among 70～80 DEG C of soap lyes of 538 parts of insulations, use high-speed shearing machine to be scattered among soap lye by modified asphalt shearing simultaneously, modified
After Colophonium is all poured in soap lye and sheared uniformly, adds 60 part of 705 room temperature vulcanized silicone rubber continuing and shear 20min and obtain and break
There is after breast the emulsified asphalt of hydrophobic performance.
Embodiment 6:
964 parts of Kelamayi 90# Colophoniumes are heated to 160～170 DEG C, add 35 parts of styrene butadiene ribber blocks
Copolymer, stirs swelling 2h, uses high-speed shearing machine to shear 70min, continues to shear 10min after adding 1 part of sulfur, and insulation is grown
1h obtains modified pitch；By 592 parts of tap water heatings to 60～70 DEG C, add 33.3 parts of surfactants, 1.7 parts of calcium chloride,
Shear agitation is uniform, and adding dilute hydrochloric acid to liquid pH value is 3.5～4.5 acquisition soap lyes；1000 parts of modified pitch are slowly added into
Among 70～80 DEG C of soap lyes of 667 parts of insulations, use high-speed shearing machine to be scattered among soap lye by modified asphalt shearing simultaneously, modified
After Colophonium is all poured in soap lye and sheared uniformly, adds 40 part of 704 room temperature vulcanized silicone rubber continuing and shear 20min and obtain and break
There is after breast the emulsified asphalt of hydrophobic performance.
Embodiment 7:
Step one, according to mass fraction, adds 31.5 after 867 parts of Kelamayi 70# Colophoniumes are heated to 160～170 DEG C
Part SBR styrene butadiene rubbers block copolymer, and stir swelling 1h, obtain substance A；
Step 2, uses high-speed shearing machine that substance A shears 40min, then adds 0.9 part of sulfur in the substance A after shearing
Shearing 10min after sulphur, insulation is grown 1h, is obtained substance B；
Step 3, by 419 parts of tap water heatings to after 60～70 DEG C, adds 27.7 parts of surfactants and 1.4 parts of emulsifyings
Stabilizer, and stir, adding dilute hydrochloric acid to body pH value is 3.5 acquisition soap lyes；
Step 4, is incubated soap lye to 70～80 DEG C, is added by 900 parts of substance Bs in the soap lye after 484 parts of heating, stirring
Add 703 room temperature vulcanized silicone rubbers after uniformly and stir, it is thus achieved that there is after breakdown of emulsion the emulsified asphalt of hydrophobic performance.
Embodiment 8:
Step one, according to mass fraction, adds 38.5 parts after 1060 parts of Kelamayi SK90 are heated to 160～170 DEG C
SBR styrene butadiene rubbers block copolymer, and stir swelling 2h, obtain substance A；
Step 2, uses high-speed shearing machine that substance A shears 70min, then adds 1.1 parts of sulfur in the substance A after shearing
Shearing 20min after sulphur, insulation is grown 1h, is obtained substance B；
Step 3, by 591 parts of tap water heatings to after 60～70 DEG C, adds 33.8 parts of surfactants and 1.7 parts of emulsifyings
Stabilizer, and stir, adding dilute hydrochloric acid to body pH value is 4.5 acquisition soap lyes；
Step 4, is incubated soap lye to 70～80 DEG C, is added by 1100 parts of substance Bs in the soap lye after 667 parts of heating, stirring
Add 705 room temperature vulcanized silicone rubbers after uniformly and stir, it is thus achieved that there is after breakdown of emulsion the emulsified asphalt of hydrophobic performance.
Embodiment 9:
Step one, according to mass fraction, adds 35 parts after 964 parts of Kelamayi 110# Colophoniumes are heated to 160～170 DEG C
SBR styrene butadiene rubbers block copolymer, and stir swelling 1.5h, obtain substance A；
Step 2, uses high-speed shearing machine that substance A shears 55min, then adds 1 part of sulfur in the substance A after shearing
Rear shearing 15min, insulation is grown 1h, is obtained substance B；
Step 3, by 505 parts of tap water heatings to after 60～70 DEG C, adds 30.75 parts of surfactants and 1.5 parts of emulsifyings
Stabilizer, and stir, adding dilute hydrochloric acid to body pH value is 4 acquisition soap lyes；
Step 4, is incubated soap lye to 70～80 DEG C, is added by 1000 parts of substance Bs in the soap lye after 576 parts of heating, stirring
Add 704 room temperature vulcanized silicone rubbers after uniformly and stir, it is thus achieved that there is after breakdown of emulsion the emulsified asphalt of hydrophobic performance.
There are the emulsified asphalt performance indications of hydrophobic performance, as shown in table 1 after breakdown of emulsion.
Table 1 pavement performance index and hydrophobicity index
Technology requires quoted from " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40 2004).
Claims (8)
1. there is the preparation method of the emulsified asphalt of hydrophobic performance, it is characterised in that comprise the following steps after a breakdown of emulsion:
Step one, according to mass fraction, adds 31.5～38.5 parts of modifying agent after 867～1060 parts of matrix pitch heating, and
Stir swelling, obtain substance A；
Step 2, stirs after adding 0.9～1.1 part of modified stabilizer in substance A, and insulation is grown, and obtains substance B；
Step 3, after 419～591 parts of tap waters or distilled water being heated, adds 27.7～33.8 parts of emulsifying agents and 1.4～1.7
Part emulsion stabilizer, and stir, adding dilute hydrochloric acid to body pH value is 3.5～4.5 acquisition soap lyes；
1100～900 parts of substance Bs are added in the soap lye after 484～667 parts of heating, are stirring evenly and then adding into hydrophobic by step 4
Agent also stirs, it is thus achieved that have the emulsified asphalt of hydrophobic performance after breakdown of emulsion.
Having the preparation method of the emulsified asphalt of hydrophobic performance after a kind of breakdown of emulsion the most according to claim 1, its feature exists
In, in described step one, matrix pitch adds modifying agent after being heated to 160～170 DEG C, stirs swelling 1～2h.
Having the preparation method of the emulsified asphalt of hydrophobic performance after a kind of breakdown of emulsion the most according to claim 1, its feature exists
In, in described step one, stating matrix pitch is 70#, 90# or 110# Colophonium, and modifying agent is styrene butadiene styrene
Or SBR styrene butadiene rubbers block copolymer.
Having the preparation method of the emulsified asphalt of hydrophobic performance after a kind of breakdown of emulsion the most according to claim 1, its feature exists
In, in described step 2, stirring uses high-speed shearing machine, shears 40～70min, substance A in substance A before adding modified stabilizer
Shearing 10～20min after middle addition modified stabilizer, 1h is grown in insulation.
Having the preparation method of the emulsified asphalt of hydrophobic performance after a kind of breakdown of emulsion the most according to claim 1, its feature exists
In, in described step 2, modified stabilizer is sulfur.
Having the preparation method of the emulsified asphalt of hydrophobic performance after a kind of breakdown of emulsion the most according to claim 1, its feature exists
In, in described step 3, water temperature is 60～70 DEG C.
Having the preparation method of the emulsified asphalt of hydrophobic performance after a kind of breakdown of emulsion the most according to claim 1, its feature exists
In, in described step 3, emulsifying agent is surfactant.
Having the preparation method of the emulsified asphalt of hydrophobic performance after a kind of breakdown of emulsion the most according to claim 1, its feature exists
In, in described step 4, water-repelling agent is 703 room temperature vulcanized silicone rubbers, 704 room temperature vulcanized silicone rubbers or 705 room temperature vulcanization silicon rubbers
Glue.
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| CN201610192996.XA CN105778120B (en) | 2016-03-30 | 2016-03-30 | A kind of preparation method of emulsified asphalt after demulsification with hydrophobic performance |
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| CN201610192996.XA CN105778120B (en) | 2016-03-30 | 2016-03-30 | A kind of preparation method of emulsified asphalt after demulsification with hydrophobic performance |
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| CN105778120B CN105778120B (en) | 2018-12-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109294248A (en) * | 2018-09-07 | 2019-02-01 | 郑州大予机械设备有限公司 | A kind of high viscosity modified emulsifying asphalt and preparation method thereof |
| CN111171588A (en) * | 2020-03-12 | 2020-05-19 | 周凯 | Hydrophobic asphalt with slow release effect and preparation method thereof |
| CN115094706A (en) * | 2022-07-29 | 2022-09-23 | 南京林业大学 | Preparation and spraying method of interlayer hydrophobic bonding layer material of double-layer drainage asphalt pavement |
| CN115979902A (en) * | 2023-01-30 | 2023-04-18 | 北京建筑大学 | Method for evaluating wrapping effect of cold-mixed asphalt and aggregate at normal temperature |
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| CN1396213A (en) * | 2002-06-10 | 2003-02-12 | 中油销售江苏公司兴能沥青厂 | Polymer emulsified and re-cross-linked asphalt colloid mixture and its preparing process |
| CN103554928A (en) * | 2013-10-14 | 2014-02-05 | 王利泉 | Fog seal compound modified emulsified asphalt and preparation method thereof |
| CN104231643A (en) * | 2014-09-28 | 2014-12-24 | 西安公路研究院 | High-performance multifunctional modified emulsified asphalt as well as preparation method and application thereof |
| CN104341603A (en) * | 2013-08-11 | 2015-02-11 | 江苏科茵格特种沥青有限公司 | Preparation method of modified emulsified asphalt for ultra-thin wearing layer |
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2016
- 2016-03-30 CN CN201610192996.XA patent/CN105778120B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1396213A (en) * | 2002-06-10 | 2003-02-12 | 中油销售江苏公司兴能沥青厂 | Polymer emulsified and re-cross-linked asphalt colloid mixture and its preparing process |
| CN104341603A (en) * | 2013-08-11 | 2015-02-11 | 江苏科茵格特种沥青有限公司 | Preparation method of modified emulsified asphalt for ultra-thin wearing layer |
| CN103554928A (en) * | 2013-10-14 | 2014-02-05 | 王利泉 | Fog seal compound modified emulsified asphalt and preparation method thereof |
| CN104231643A (en) * | 2014-09-28 | 2014-12-24 | 西安公路研究院 | High-performance multifunctional modified emulsified asphalt as well as preparation method and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109294248A (en) * | 2018-09-07 | 2019-02-01 | 郑州大予机械设备有限公司 | A kind of high viscosity modified emulsifying asphalt and preparation method thereof |
| CN111171588A (en) * | 2020-03-12 | 2020-05-19 | 周凯 | Hydrophobic asphalt with slow release effect and preparation method thereof |
| CN115094706A (en) * | 2022-07-29 | 2022-09-23 | 南京林业大学 | Preparation and spraying method of interlayer hydrophobic bonding layer material of double-layer drainage asphalt pavement |
| CN115979902A (en) * | 2023-01-30 | 2023-04-18 | 北京建筑大学 | Method for evaluating wrapping effect of cold-mixed asphalt and aggregate at normal temperature |
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| Publication number | Publication date |
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| CN105778120B (en) | 2018-12-28 |
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