CN116462483A - Cold high-performance modified asphalt liquid and preparation method thereof - Google Patents
Cold high-performance modified asphalt liquid and preparation method thereof Download PDFInfo
- Publication number
- CN116462483A CN116462483A CN202310526452.2A CN202310526452A CN116462483A CN 116462483 A CN116462483 A CN 116462483A CN 202310526452 A CN202310526452 A CN 202310526452A CN 116462483 A CN116462483 A CN 116462483A
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- Prior art keywords
- cold
- modified asphalt
- asphalt
- performance modified
- paving
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- 239000010426 asphalt Substances 0.000 title claims abstract description 78
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010440 gypsum Substances 0.000 claims abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 5
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003381 stabilizer Substances 0.000 claims abstract description 4
- 239000000654 additive Substances 0.000 claims abstract description 3
- 230000000996 additive effect Effects 0.000 claims abstract description 3
- 239000000945 filler Substances 0.000 claims abstract description 3
- 229920000642 polymer Polymers 0.000 claims abstract description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920001661 Chitosan Polymers 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 239000002174 Styrene-butadiene Substances 0.000 claims description 2
- 229960004365 benzoic acid Drugs 0.000 claims description 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical group C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 2
- 239000004816 latex Substances 0.000 claims description 2
- 229920000126 latex Polymers 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 239000011115 styrene butadiene Substances 0.000 claims description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 2
- 239000004034 viscosity adjusting agent Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 229920002301 cellulose acetate Polymers 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000012425 Freezing-thawing process Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the technical field of asphalt, and particularly relates to a cold-use high-performance modified asphalt liquid and a preparation method thereof. Specifically comprises SBS modified asphalt, filler (comprising coarse aggregate, fine aggregate and titanium gypsum), viscosity regulator and additive (comprising polymer stabilizer, effective acid, silica sol and cellulose acetate). The application method involves three steps of mixing, paving and compacting. The cold-paving asphalt prepared from the cold-use high-performance modified asphalt liquid has the characteristics of high durability, excellent adhesion performance, better crack resistance, reduced crack generation, stronger weather resistance and the like. Meanwhile, as heating is not needed, the construction efficiency is high, the construction process is simple, and the application range is wide.
Description
Technical Field
The invention belongs to the technical field of asphalt, and particularly relates to a cold-use high-performance modified asphalt liquid and a preparation method thereof.
Background
Cold-paving asphalt (cold-paving asphalt) and hot-paving asphalt are two different paving modes, and the differences are mainly reflected in the aspects of construction temperature, construction process and the like. Compared with hot-paving asphalt, cold-paving asphalt has the following advantages:
environmental protection: the cold-laid asphalt does not need to be heated, and cannot generate environmental pollutants such as waste gas, waste water and the like, so that the influence on the environment is reduced, and the environment is more friendly.
Energy saving: the cold-laid asphalt does not need to use special heating equipment or consume extra energy, and can effectively save energy and cost.
The construction is simple: the cold-paving asphalt construction process is relatively simple, and a smooth and durable pavement can be formed by uniformly scattering the mixture on the pavement and then compacting and fully curing the mixture by mechanical equipment without special heating equipment and a continuous paving machine.
The adaptability is strong: the cold-laid asphalt material has strong adaptability, can be suitable for various terrains, climates and application requirements, and can also be used in combination with other materials, such as cement concrete and the like.
High efficiency and rapidness: the construction speed of cold asphalt is faster than that of hot asphalt, so that the engineering progress and efficiency can be effectively improved, and the construction period and cost are reduced.
Therefore, the cold-laid asphalt does not need to be heated, the construction efficiency is high, the construction process is simple, and the application is wide; but because the hot-paving asphalt paving temperature is high, the hot-paving asphalt paving agent can better contact with the pavement to form tighter combination, and has better durability and weather resistance; compared with hot-paving asphalt, the mechanical properties and weather resistance of cold-paving asphalt are still to be researched in one step.
Disclosure of Invention
The invention provides a cold-use high-performance modified asphalt liquid, and provides cold-use asphalt with good weather resistance by changing the components of the cold-use high-performance modified asphalt liquid.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the cold high-performance modified asphalt liquid comprises the following components in parts by mass:
the modified asphalt is SBS modified asphalt;
the filler comprises the following components in percentage by mass:
coarse aggregate 30-40
Fine aggregate 40-60
10-20 parts of titanium gypsum;
the additive comprises the following components in percentage by mass:
in particular, the polymeric stabilizer is styrene-butadiene latex.
In particular, the viscosity modifier is at least one of the following;
chitosan and polyvinyl alcohol.
In particular, the effective acid is at least one of the following;
benzene carboxylic acid, oxalic acid and phthalic acid.
In particular, the silica sol has a particle size of 50-200nm.
In particular, the titanium gypsum:
calcium sulfate dihydrate is more than or equal to 85 percent;
iron oxide: less than or equal to 8 percent;
chloride ions: less than or equal to 0.02 percent.
The index of the titanium gypsum is calculated on a dry basis.
The application method of the cold-use high-performance modified asphalt liquid comprises the following steps:
(1) Mixing: mixing cold high-performance modified asphalt liquid according to the weight ratio to prepare cold paving asphalt;
(2) Paving: the paver uniformly spreads the cold-paved asphalt on the pavement;
(3) Compacting: compacting the paved asphalt pavement.
The cold high-performance modified asphalt liquid provided by the invention has the following advantages:
high durability: the SBS modified asphalt and the polymer stabilizer can improve the durability of the cold-laid asphalt and make the cold-laid asphalt more durable.
Excellent adhesion properties: the function of the viscosity regulator can make the cold-laid asphalt well adhere to the base layer, and the adhesion performance of the cold-laid asphalt is improved.
Better crack resistance: titanium gypsum and silica sol both contain microscopic-scale particles that can fill microscopic gaps in asphalt, enhancing the crack resistance of cold-laid asphalt.
Reducing cracking generation: cellulose acetate can maintain the physical and chemical properties of the asphalt, thereby reducing cracking.
Stronger weather resistance: the main function of the effective acid is to inhibit the oxidation reaction of asphalt, so that the asphalt maintains good mechanical property and durability. The effective acid has strong thermal stability, oxygen stability and shielding property, and can protect asphalt from oxidation when the asphalt is influenced by environmental factors such as ultraviolet rays, high temperature and the like.
In summary, the cold-use high-performance modified asphalt liquid provided by the invention has the advantages of high durability, excellent adhesion performance, better crack resistance and reduced cracking risk. Meanwhile, the cold-laid asphalt does not need to be heated, the construction efficiency is high, the construction process is simple, and the application is wide.
Detailed Description
For a better understanding of the present invention, reference will now be made to the following description of specific examples, which are included in the terminology used to describe specific embodiments of the invention and are not intended to limit the scope of the invention.
The experimental methods, in which specific conditions are not noted in the following examples, are generally conducted under conventional conditions or under conditions recommended by the manufacturer. Percentages and parts are by weight unless otherwise indicated.
In specific embodiments, the titanium gypsum is from Anhui Sendai New Material Co., ltd, and the parameters are shown in Table 1 below:
TABLE 1 titanium gypsum composition (dry basis)
The cold high-performance modified asphalt liquid comprises the following components in parts by mass as shown in table 2:
table 2 Cold high Performance modified asphalt liquid composition (parts by mass)
In Table 2, the particle size of the silica sol was 50-200nm.
An application method of a cold-use high-performance modified asphalt liquid comprises the following steps:
(1) Weighing: weighing the components shown in Table 1;
(2) Mixing: mixing cold high-performance modified asphalt liquid according to the weight ratio to prepare a cold paving asphalt material;
(3) Paving: the paver uniformly spreads the cold-paved asphalt on the pavement;
(4) Compacting: compacting the paved asphalt pavement.
Performance testing was performed after laying the previous examples, wherein:
and carrying out corresponding tests on the cold high-performance modified asphalt after liquid laying according to the technical specifications of the urban road engineering standard GB 51286-2018 and the technical specifications of the JTG E20-2011 road engineering asphalt and asphalt mixture test procedure and the JTGF40-2019 road asphalt pavement construction.
The test results are shown in table 3 below.
TABLE 3 Performance test results
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Marshall stability (kN) | 36.6 | 34.3 | 43.1 | 39.4 | 44.3 |
| Stability of the immersed Marshall residue (25 ℃ C.,%) | 96.8 | 94.1 | 95.2 | 96.1 | 93.3 |
| Tensile Strength (7 d, mpa) | 0.76 | 0.69 | 0.82 | 0.78 | 0.84 |
| Maximum flexural tensile Strain (μg) | 2891 | 3102 | 2751 | 2834 | 2703 |
| Rutting stability index (times/mm) at 60 DEG C | 36218 | 38415 | 33108 | 34871 | 32197 |
| Freeze thawing split tensile strength ratio (%) | 93.4 | 94.1 | 91.3 | 92.8 | 91.3 |
As can be seen from Table 3, the Marshall stability of the present invention is higher overall, and the Marshall stability of examples 3, 4 and 5 is relatively better, indicating that the cold-laid asphalt has better stability and durability during use.
The stability of the immersed Marshall residue is above 93%, which indicates that the stability of the immersed Marshall residue is good in a wet environment.
The tensile strengths of the examples are relatively close and in a relatively high range, indicating that cold-laid asphalt has good tensile properties.
The maximum tensile bending strain of example 2 is relatively high and can withstand greater deformation when subjected to bending load, and thus has better bending capability. But in general the bending capability of other embodiments is also substantially within the same order of magnitude.
As can be seen from the data in table 3, the 60 ℃ rutting stability index of example 3 is relatively low, indicating that the stability and durability under high temperature conditions are slightly lower than those of the other examples, but the gap between the different examples is not large.
The difference of the freezing-thawing split tensile strength ratio between the examples is smaller and is more than 90%, which shows that the stability of the cold-paved asphalt in the freezing-thawing process is still good.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (7)
1. The cold high-performance modified asphalt liquid is characterized by comprising the following components in parts by weight:
the modified asphalt is SBS modified asphalt;
the filler comprises the following components in percentage by mass:
coarse aggregate 30-40
Fine aggregate 40-60
10-20 parts of titanium gypsum;
the additive comprises the following components in percentage by mass:
2. the cold use type high performance modified asphalt liquid according to claim 1, wherein the polymer stabilizer is styrene-butadiene latex.
3. The cold high performance modified asphalt liquid of claim 1, wherein the viscosity modifier is at least one of the following;
chitosan and polyvinyl alcohol.
4. The cold use high performance modified asphalt liquid of claim 1, wherein the effective acid is at least one of the following;
benzene carboxylic acid, oxalic acid and phthalic acid.
5. The cold use type high performance modified asphalt liquid according to claim 1, wherein the particle size of the silica sol is 50-200nm.
6. The cold use type high performance modified asphalt liquid according to claim 1, wherein the titanium gypsum:
calcium sulfate dihydrate is more than or equal to 85 percent;
iron oxide: less than or equal to 8 percent;
chloride ions: less than or equal to 0.02 percent.
7. A method of using the cold use high performance modified asphalt liquid of any one of claims 1 to 6, comprising the steps of:
(1) Mixing: mixing cold high-performance modified asphalt liquid according to the weight ratio to prepare cold paving asphalt;
(2) Paving: the paver uniformly spreads the cold-paved asphalt on the pavement;
(3) Compacting: compacting the paved asphalt pavement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310526452.2A CN116462483A (en) | 2023-05-11 | 2023-05-11 | Cold high-performance modified asphalt liquid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310526452.2A CN116462483A (en) | 2023-05-11 | 2023-05-11 | Cold high-performance modified asphalt liquid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116462483A true CN116462483A (en) | 2023-07-21 |
Family
ID=87184370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310526452.2A Pending CN116462483A (en) | 2023-05-11 | 2023-05-11 | Cold high-performance modified asphalt liquid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116462483A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353481A (en) * | 2007-07-25 | 2009-01-28 | 同济大学 | Asphalt mixture for rapid repair of hot-mix-cold-laid pavement |
| CN102329102A (en) * | 2010-07-13 | 2012-01-25 | 上海道柯特沥青科技有限公司 | Hot-mix-cold-laid SBS (styrene butadiene styrene) modified asphalt mixture |
| CN103508701A (en) * | 2012-06-17 | 2014-01-15 | 朱洪洲 | Composite phase transition cooling bituminous paving material |
| CN109233309A (en) * | 2018-08-30 | 2019-01-18 | 沈阳市沈北新区路佳庆环保型沥青冷拌技术咨询中心 | A kind of environment-friendly type cold mixing modified emulsifying asphalt |
| CN115340772A (en) * | 2022-09-22 | 2022-11-15 | 湖北省高速公路实业开发有限公司 | High-viscosity high-elasticity modified emulsified asphalt, preparation method thereof and construction method of cold-mixing ultrathin overlay |
-
2023
- 2023-05-11 CN CN202310526452.2A patent/CN116462483A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353481A (en) * | 2007-07-25 | 2009-01-28 | 同济大学 | Asphalt mixture for rapid repair of hot-mix-cold-laid pavement |
| CN102329102A (en) * | 2010-07-13 | 2012-01-25 | 上海道柯特沥青科技有限公司 | Hot-mix-cold-laid SBS (styrene butadiene styrene) modified asphalt mixture |
| CN103508701A (en) * | 2012-06-17 | 2014-01-15 | 朱洪洲 | Composite phase transition cooling bituminous paving material |
| CN109233309A (en) * | 2018-08-30 | 2019-01-18 | 沈阳市沈北新区路佳庆环保型沥青冷拌技术咨询中心 | A kind of environment-friendly type cold mixing modified emulsifying asphalt |
| CN115340772A (en) * | 2022-09-22 | 2022-11-15 | 湖北省高速公路实业开发有限公司 | High-viscosity high-elasticity modified emulsified asphalt, preparation method thereof and construction method of cold-mixing ultrathin overlay |
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