CN108641381A - A kind of colored road surface cover material and preparation method thereof - Google Patents
A kind of colored road surface cover material and preparation method thereof Download PDFInfo
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- CN108641381A CN108641381A CN201810344648.9A CN201810344648A CN108641381A CN 108641381 A CN108641381 A CN 108641381A CN 201810344648 A CN201810344648 A CN 201810344648A CN 108641381 A CN108641381 A CN 108641381A
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- cover material
- surface cover
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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
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
- C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
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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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Abstract
The present invention provides a kind of colored road surface cover material and preparation method thereof.The present invention provides a kind of colored road surface cover material, according to the mass fraction, are prepared by the raw material including following components：Decolourize 150~200 parts of pitch, 20~25 parts of clay, 10~15 parts of montmorillonite, 6~8 parts of emulsifier, 5~10 parts of functional additive, 260~320 parts of water.Colored road surface cover material provided by the invention forms sludge-type using clay, montmorillonite, emulsifier and water and emulsifies soap lye, is emulsified to decoloration pitch, so that each component is bound to each other to form unified entirety, promote the caking property and stability of emulsified asphalt；And functional additive is added, the colored road surface cover material with certain consistency is made, which makes the pitch after emulsification preserve steadily in the long term due to the support thickening of these mineral materials of clay and montmorillonite.The experimental results showed that colored road surface cover material provided by the invention is valid up to 2 years or more.
Description
Technical field
The present invention relates to road maintenance technical field, more particularly to a kind of colored road surface cover material and preparation method thereof.
Background technology
With the rapid fast development increased with motor vehicles of highway mileage, traffic and the coordinated development of environment are increasingly
Paid attention to by urban construction, the various places such as vcehicular tunnel, bridge, urban road, airport, park, scenic spot are all starting land
It is continuous to use colored road surface.Colorful Asphalt Pavement have the characteristics that it is bright in colour, high-grade it is beautiful, color is various, mat formation road surface not
But reduces traffic noise, also improve driving comfort level, effectively aesthetic road traffic, road improvement space environment is reduced
Driving driver's visual fatigue, and the warning inducing action of road traffic is improved, reduce the incidence of safety accident.
The more novel mode of current color Asphalt Pavement Construction Technique is chromatic cementing agent formula, so-called chromatic cementing agent
Referred to as color asphalt is typically basic raw material with modern petrochemical product, then is equipped with high-molecular copolymer, resin, filling
Oil and other additives are made into cementitious matter similar with asphalt performance, glue used by the technique of present domestic contrast prevalence
Ramming material is then to add covering agent by the special cementitious matter of light color asphalt of decoloration and colorant is coloured, and generates color
Color bright-coloured chromatic cementing agent, when application, are mixing cylinder and colored aggregate, and the materials such as miberal powder become colored after stirring evenly together
Asphalt.
Colorful Asphalt Pavement involves great expense, and 10 times are higher by incessantly than general black bituminous paving, high in the prevalence of cost,
Promote the problems such as difficult.And existing color emulsified asphalt production technology is mostly by color asphalt and emulsifier, modifying agent, steady
The soap lyes of the formation such as agent is determined by a certain percentage under suitable temperature condition, is made by special colloid mill grinding shearing
's.Common color emulsified asphalt has SBR modified emulsifying asphalts and SBS modified emulsifying asphalts：SBR modified emulsifying asphalts are i.e. first
Matrix pitch is emulsified using common down equipment, it is uniform then to add SBR emulsion mix；SBS modified emulsifyings drip
It is green then be first pass through SBS latex to matrix pitch be modified using down equipment carry out emulsification be worth.Both emulsified asphalts are steady
Qualitative difference is not easy to store for a long time, and harsh to equipment requirement.
Invention content
The purpose of the present invention is to provide a kind of colored road surface cover material and preparation method thereof.Color road provided by the invention
Face cover material property is stablized, and can store for a long time, and not high to equipment requirement.
The present invention provides a kind of colored road surface cover material, according to the mass fraction, are prepared by the raw material including following components
It obtains：Decolourize 150~200 parts of pitch, 20~25 parts of clay, 10~15 parts of montmorillonite, 6~8 parts of emulsifier, functional additive
5~10 parts, 260~320 parts of water.
Preferably, the colored road surface cover material is prepared by the raw material including following components：Decoloration pitch 160~
180 parts, 22~24 parts of clay, 11~14 parts of montmorillonite, 6.5~7.5 parts of emulsifier, 6~8 parts of functional additive, water 280~
300 parts.
Preferably, the granularity of the clay is 200 mesh or more.
Preferably, the pH value of the montmorillonite is 7.5~8.5, and dilation is that the volume of every 1.0g expansions is 10~25mL.
Preferably, the granularity of the montmorillonite is 300~800 mesh.
Preferably, the emulsifier is slow breaking amides anionic asphalt emulsion.
Preferably, the functional additive includes 1H, 1H, 2H, 2H- perfluoro decyl trichlorosilanes and/or polytetrafluoroethyl-ne
Alkene.
The present invention also provides the preparation methods of colored road surface cover material described in above-mentioned technical proposal, include the following steps：
(1) emulsifier is mixed with part water, obtains emulsion；
(2) emulsion that the step (1) obtains is mixed with clay and montmorillonite, obtains sludge-type emulsification soap lye；
(3) the sludge-type emulsification soap lye obtained the step (2) successively with decoloration pitch, functional additive and residue
Water mixes, and obtains colored road surface cover material.
Preferably, the temperature of water is 90~95 DEG C in the step (1).
Preferably, the temperature of pitch is 140~155 DEG C in the step (3).
The present invention provides a kind of colored road surface cover material, according to the mass fraction, are prepared by the raw material including following components
It obtains：Decolourize 150~200 parts of pitch, 20~25 parts of clay, 10~15 parts of montmorillonite, 6~8 parts of emulsifier, functional additive
5~10 parts, 260~320 parts of water.Colored road surface cover material provided by the invention is formed using clay, montmorillonite, emulsifier and water
Sludge-type emulsifies soap lye, is emulsified to decoloration pitch, each component is made to be bound to each other to form unified entirety, promote emulsified asphalt
Caking property and stability；And functional additive is added, the colored road surface cover material with certain consistency, the cover material is made
Due to the support thickening of these mineral materials of clay and montmorillonite, the pitch after emulsification is made to preserve steadily in the long term.Experimental result table
Bright, colored road surface cover material provided by the invention is valid up to 2 years or more.
In addition, colored road surface cover material provided by the invention is set using traditional reaction kettle for having agitating paddle as production
It is standby, it is not high to equipment requirement；Gathering materials before administration with selected pigment (color tunable) and chromatic ceramics can apply after mixing
With conveniently succinctly.
Specific implementation mode
The present invention provides a kind of colored road surface cover material, according to the mass fraction, are prepared by the raw material including following components
It obtains：Decolourize 150~200 parts of pitch, 20~25 parts of clay, 10~15 parts of montmorillonite, 6~8 parts of emulsifier, functional additive
5~10 parts, 260~320 parts of water.
The raw material of colored road surface cover material provided by the invention include decoloration 150~200 parts of pitch, preferably 160~180
Part.The present invention does not have special restriction to the source of the decoloration pitch, using commercially available decoloration well known to those skilled in the art
Pitch.In an embodiment of the present invention, the decoloration pitch is preferably Karamay oilfield for producing road asphalt
Naphthenic base viscous crude fraction is basic raw material, through the pitch that decolourizes made from pitch decolorization；Specific physical and chemical performance index enters for needle
Spend (25 DEG C, 100g, 5s) 60~800.1mm；Ductility (5cm/min, 15 DEG C)>100cm；44~54 DEG C of softening point (ring and ball method).
In the present invention, the pitch plays cementation.
It is in terms of 150~200 parts by the quality of pitch, the raw material of colored road surface cover material provided by the invention includes montmorillonite
10~15 parts, preferably 11~14 parts.In the present invention, the chemical analysis of the montmorillonite is preferably (Na, Ca)0.33(Al,
Mg)2(Si4O10)(OH)2·nH2O.In the present invention, the pH value of the montmorillonite is preferably 7.5~8.5, and more preferably 8；Institute
The volume that the dilation for stating montmorillonite is preferably the expansion per 1.0g is 10~25mL.In the present invention, the granularity of the montmorillonite
Preferably 300~800 mesh, more preferably 400~700 mesh, most preferably 500~600 mesh.In the present invention, the montmorillonite
Play what swelling promotion was emulsified and bonded.
It is in terms of 150~200 parts by the quality of pitch, the raw material of colored road surface cover material provided by the invention includes clay 20
~25 parts, preferably 22~24 parts.In the present invention, the granularity of the clay is preferably 200 mesh or more.In the present invention, institute
It states clay and plays strength support.
In the present invention, the clay is preferably white clay, is after disordered kaolinite is deposited by aluminium silicate mineral shape
At soft high plasticity clay.In the present invention, the kind of the clay and ingredient are preferably as shown in table 1.
1 clay kind of table and ingredient
It is in terms of 150~200 parts by the quality of pitch, the raw material of colored road surface cover material provided by the invention includes emulsifier
6~8 parts, preferably 6.5~7.5 parts.In the present invention, the emulsifier is preferably slow breaking amide anionoid asphalt emulsification
Agent more preferably includes in neopelex, double dodecylphenyl ether sodium disulfonates, odium stearate and sodium laurate
It is one or more.In the present invention, the emulsifier can promote the emulsification of pitch.
It is in terms of 150~200 parts by the quality of pitch, the raw material of colored road surface cover material provided by the invention includes functionality
5~10 parts of additive, preferably 6~8 parts.In the present invention, the functional additive includes 1H, 1H, 2H, the 2H- perfluor last of the ten Heavenly stems
Base trichlorosilane and/or polytetrafluoroethylene (PTFE).In the present invention, the functional additive has extremely low surface energy, is used for road
Surface dirt can be self-cleaning by rainwater when face, has fabulous hydrophobicity (maximum water absorption rate is less than 5%), and denounce oil, has pole
Small friction coefficient (0.15~0.17), will not non-dust absorption and non-fouling, soil resistance is good.In the present invention, when the functional additive
For 1H, 1H, 2H, when 2H- perfluoro decyl trichlorosilanes, the highest C-F keys of bond energy in organic matter so that fluorine carbon is in chromatic cementing agent
In have many excellent properties in common color cementitious matter, such as：Weatherability, salt tolerance, washability, non-adhesiveness are exempted to tie up
Shield and automatically cleaning stain resistance.
It is in terms of 150~200 parts by the quality of pitch, the raw material of colored road surface cover material provided by the invention includes water 260
~320 parts, preferably 280~300 parts.In the present invention, the water does not contain harmful solubility salt preferably, can cause
The substance of chemical reaction and the water of other pollutants, it is specific such as drinking water.In the present invention, the water can be with montmorillonite, viscous
Soil and emulsifier form sludge-type and emulsify soap lye, promote the emulsification to pitch；The additive amount of the water can be adjusted in above range
Section colored road surface cover material is suitable viscosity.
In the present invention, the viscosity of the colored road surface cover material is preferably 1500~2300 centipoises, more preferably 1800
~2100 centipoises.
Colored road surface cover material provided by the invention forms sludge-type using clay, montmorillonite, emulsifier and water and emulsifies soap
Liquid emulsifies decoloration pitch, each component is made to be bound to each other to form unified entirety, promotes the caking property of emulsified asphalt and steady
It is qualitative；And functional additive is added, the colored road surface cover material with certain consistency is made, the cover material is due to clay and illiteracy
The support thickening of these mineral materials of de- stone, makes the pitch after emulsification preserve steadily in the long term.
The present invention also provides the preparation methods of colored road surface cover material described in above-mentioned technical proposal, include the following steps：
(1) emulsifier is mixed with part water, obtains emulsion；
(2) emulsion that the step (1) obtains is mixed with clay and montmorillonite, obtains sludge-type emulsification soap lye；
(3) the sludge-type emulsification soap lye obtained the step (2) successively with decoloration pitch, functional additive and residue
Water mixes, and obtains colored road surface cover material.
The present invention mixes emulsifier with part water, obtains emulsion.In the present invention, with the quality of pitch for 100 parts
Meter, the quality of the part water is preferably 180~200 parts, more preferably 185~195 parts.In the present invention, the temperature of the water
Preferably 90~95 DEG C, more preferably 93 DEG C of degree.In the present invention, the temperature of the water can be carried further within the above range
High emulsifying effectiveness.
The present invention restriction not special to the operation of the mixing of the emulsifier and part water, using people in the art
The technical solution of mixed material is prepared known to member.In the present invention, the mixing of the emulsifier and part water preferably exists
It is carried out under stirring condition；The rotating speed of the stirring is preferably 100~120r/min, more preferably 105~115r/min；It is described to stir
The time mixed is preferably 2~3min.
After obtaining emulsion, the present invention mixes the emulsion with clay and montmorillonite, obtains sludge-type emulsification soap lye.
In the present invention, the mixing of the emulsion and clay and montmorillonite preferably carries out under agitation；The rate of the stirring
Preferably 150~200r/min, more preferably 160~180r/min；The time of the stirring is preferably 5~7min.
In the preferred embodiment of the present invention, the emulsifier is first dissolved in hot water shape emulsion, then mixed with clay and montmorillonite
It closes, montmorillonite is met water and can be swollen, and more uniform type emulsification soap lye is obtained.
Obtain sludge-type emulsification soap lye after, the present invention by the sludge-type emulsification soap lye successively with decoloration pitch, functionality
Additive and remaining water mix, and obtain colored road surface cover material.In the present invention, the temperature of the decoloration pitch is preferably 130
~150 DEG C, more preferably 140 DEG C.
The present invention preferably pitch is added under agitation in the sludge-type emulsification soap lye, obtains emulsified asphalt.
In the present invention, the rate of the stirring is preferably 300~320r/min, more preferably 305~315r/min；The stirring when
Between preferably 25~30min.
After obtaining emulsified asphalt, the present invention preferably sequentially adds functional additive and residue into the emulsified asphalt
Water obtains colored road surface cover material.In the present invention, the functional additive is preferably added under agitation；It is described to stir
The rate mixed is preferably 150~180r/min, more preferably 160~170r/min；The time of the stirring is preferably 5~
8min。
In the present invention, it is in terms of 100 parts by the quality of pitch, the quality of the residue water is preferably 30~50 parts, more excellent
It is selected as 40 parts.In the present invention, the temperature of the remaining water is preferably room temperature.In the present invention, the remaining water can will be color
Color road surface cover material is diluted to required viscosity.
In order to further illustrate the present invention, with reference to embodiment to colored road surface cover material provided by the invention and its system
Preparation Method is described in detail, but cannot they be interpreted as limiting the scope of the present invention.
Embodiment 1:
Raw material mass mixture ratio：Decolourize 150 parts of pitch, 6 parts of emulsifier, 20 parts of clay, 12 parts of montmorillonite, functional additive
5 parts, 260 parts of water.
Specific steps：
Step 1：It will be stirred evenly in (90 DEG C) addition mixing plants of emulsifier and hot water, obtain emulsifier soap lye (rotating speed
100r/min,2min)；
Step 2：Clay, montmorillonite are put into successively in emulsifier soap lye made of step 1, (rotating speed 150r/ is stirred
Min, 6min) uniformly, emulsification soap lye mud is made；
Step 3：(145 DEG C) of the decoloration pitch of heating is added in emulsification soap lye mud, (rotating speed is stirred while adding
300r/min, 25min), until decoloration pitch adds；
Step 4：By functional additive 1H, 1H, 2H, 2H- perfluoro decyl trichlorosilanes are added, and stir while adding and (turn
Fast 150r/min, 5min), and a small amount of water is added and adjusts viscosity, viscosity is controlled in 1500~2300 centipoise ranges.
Colored road surface envelope fabric performance manufactured in the present embodiment is as shown in table 2.
2 embodiment of table, 1 colored road surface seals fabric performance
Embodiment 2:
Raw material mass mixture ratio：Decolourize 180 parts of pitch, 7 parts of emulsifier, 22 parts of clay, 12 parts of montmorillonite, functional additive
7 parts, 280 parts of water.
Specific steps
Step 1：(92 DEG C) of emulsifier and hot water are added in mixing plant and are stirred evenly (rotating speed 120r/min, 3min)；
Step 2：Clay, montmorillonite are put into successively in emulsifier soap lye made of step 1, (rotating speed 160r/ is stirred
Min, 6min) uniformly, emulsification soap lye mud is made；
Step 3：(140 DEG C) of the decoloration pitch of heating is added in emulsification soap lye mud, (rotating speed is stirred while adding
310r/min, 28min), until decoloration pitch adds；
Step 4：By functional additive 1H, 1H, 2H, 2H- perfluoro decyl trichlorosilanes are added, and stir while adding and (turn
Fast 170r/min, 6min), and a small amount of water is added and adjusts viscosity, viscosity is controlled in 1500~2300 centipoise ranges.
Colored road surface envelope fabric performance manufactured in the present embodiment is as shown in table 3.
3 embodiment of table, 2 colored road surface seals fabric performance
Embodiment 3:
Raw material mass mixture ratio：Decolourize 200 parts of pitch, 8 parts of emulsifier, 25 parts of clay, 15 parts of montmorillonite, functional additive
10 parts, 320 parts of water.
Specific steps：
Step 1：(95 DEG C) of emulsifier and hot water are added in mixing plant and are stirred evenly (rotating speed 120r/min, 3min)；
Step 2：Clay, montmorillonite are put into successively in emulsifier soap lye made of step 1, (rotating speed 200r/ is stirred
Min, 7min) uniformly, emulsification soap lye mud is made；
Step 3：(155 DEG C) of the decoloration pitch of heating is added in emulsification soap lye mud, (rotating speed is stirred while adding
320r/min, 30min), until decoloration pitch adds；
Step 4：By functional additive 1H, 1H, 2H, 2H- perfluoro decyl trichlorosilanes are added, and stir while adding and (turn
Fast 180r/min, 8min), and a small amount of water is added and adjusts viscosity, viscosity is controlled in 1500~2300 centipoise ranges.
Colored road surface envelope fabric performance manufactured in the present embodiment is as shown in table 4.
4 embodiment of table, 3 colored road surface seals fabric performance
As can be seen from the above embodiments, colored road surface cover material property provided by the invention is stablized, and can deposit for a long time
It puts, and not high to equipment requirement.
The above is only a preferred embodiment of the present invention, it is not intended to limit the present invention in any form.It should
It points out, for those skilled in the art, without departing from the principle of the present invention, if can also make
Dry improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of colored road surface cover material is prepared by the raw material including following components according to the mass fraction：Decolourize pitch
150~200 parts, 20~25 parts of clay, 10~15 parts of montmorillonite, 6~8 parts of emulsifier, 5~10 parts of functional additive, water 260
~320 parts.
2. colored road surface cover material according to claim 1, which is characterized in that the colored road surface cover material by include with
The raw material of lower component is prepared：Decolourize 160~180 parts of pitch, 22~24 parts of clay, 11~14 parts of montmorillonite, emulsifier 6.5
~7.5 parts, 6~8 parts of functional additive, 280~300 parts of water.
3. colored road surface cover material according to claim 1 or 2, which is characterized in that the granularity of the clay be 200 mesh with
On.
4. colored road surface cover material according to claim 1 or 2, which is characterized in that the pH value of the montmorillonite be 7.5~
8.5, dilation is that the volume of every 1.0g expansions is 10~25mL.
5. colored road surface cover material according to claim 4, which is characterized in that the granularity of the montmorillonite is 300~800
Mesh.
6. colored road surface cover material according to claim 1 or 2, which is characterized in that the emulsifier is slow breaking amide
Anionoid asphalt emulsifier.
7. colored road surface cover material according to claim 1 or 2, which is characterized in that the functionality additive includes 1H,
1H, 2H, 2H- perfluoro decyl trichlorosilane and/or polytetrafluoroethylene (PTFE).
8. the preparation method of colored road surface cover material, includes the following steps described in claim 1~7 any one：
(1) emulsifier is mixed with part water, obtains emulsion；
(2) emulsion that the step (1) obtains is mixed with clay and montmorillonite, obtains sludge-type emulsification soap lye；
(3) the sludge-type emulsification soap lye obtained the step (2) is mixed with decoloration pitch, functional additive and remaining water successively
It closes, obtains colored road surface cover material.
9. preparation method according to claim 8, which is characterized in that the temperature of water is 90~95 DEG C in the step (1).
10. preparation method according to claim 8, which is characterized in that in the step (3) temperature of pitch be 140~
155℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810344648.9A CN108641381B (en) | 2018-04-17 | 2018-04-17 | Colorful pavement sealing fabric and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810344648.9A CN108641381B (en) | 2018-04-17 | 2018-04-17 | Colorful pavement sealing fabric and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108641381A true CN108641381A (en) | 2018-10-12 |
| CN108641381B CN108641381B (en) | 2021-11-19 |
Family
ID=63746349
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504107A (en) * | 2018-11-16 | 2019-03-22 | 武汉市汉阳市政建设集团公司 | A kind of color asphalt composition capsule and preparation method thereof |
| CN111138976A (en) * | 2019-12-26 | 2020-05-12 | 上海浦东路桥沥青材料有限公司 | Colored emulsified asphalt coating and preparation method and application thereof |
| CN111471398A (en) * | 2020-06-11 | 2020-07-31 | 陕西中融交通建设有限公司 | Cold-state construction color seal material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986581A (en) * | 2017-04-11 | 2017-07-28 | 江苏西尔玛道路环保材料有限公司 | A kind of bituminous pavement repairing material and preparation method thereof |
| CN106987147A (en) * | 2017-05-19 | 2017-07-28 | 王筱天 | A kind of color asphalt and preparation method thereof |
-
2018
- 2018-04-17 CN CN201810344648.9A patent/CN108641381B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986581A (en) * | 2017-04-11 | 2017-07-28 | 江苏西尔玛道路环保材料有限公司 | A kind of bituminous pavement repairing material and preparation method thereof |
| CN106987147A (en) * | 2017-05-19 | 2017-07-28 | 王筱天 | A kind of color asphalt and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504107A (en) * | 2018-11-16 | 2019-03-22 | 武汉市汉阳市政建设集团公司 | A kind of color asphalt composition capsule and preparation method thereof |
| CN111138976A (en) * | 2019-12-26 | 2020-05-12 | 上海浦东路桥沥青材料有限公司 | Colored emulsified asphalt coating and preparation method and application thereof |
| CN111471398A (en) * | 2020-06-11 | 2020-07-31 | 陕西中融交通建设有限公司 | Cold-state construction color seal material and preparation method thereof |
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| Publication number | Publication date |
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| CN108641381B (en) | 2021-11-19 |
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