CN113136084A - Pouring type asphalt concrete modifier and application thereof - Google Patents
Pouring type asphalt concrete modifier and application thereof Download PDFInfo
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- CN113136084A CN113136084A CN202110435573.7A CN202110435573A CN113136084A CN 113136084 A CN113136084 A CN 113136084A CN 202110435573 A CN202110435573 A CN 202110435573A CN 113136084 A CN113136084 A CN 113136084A
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
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- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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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
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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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
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/04—Alginic acid; Derivatives thereof
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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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
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Civil Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a pouring type asphalt concrete modifier and application thereof, belonging to the technical field of asphalt materials. The pouring type asphalt concrete modifier comprises the following components: styrene-isoprene-styrene block copolymer, nylon, polyaldehyde sodium alginate, long-chain fatty acid and naphthenic base rubber oil. The weight ratio of the styrene-isoprene-styrene block copolymer to the nylon is 20-40:25-45, and the weight ratio of the polyaldehyde group sodium alginate to the long-chain fatty acid is 3-10: 1-10. The casting asphalt concrete modifier is compounded by using the SIS modifier, nylon, polyaldehyde sodium alginate, sodium hydroxide and naphthenic base rubber oil, is not easy to segregate, and has good high-temperature stability, low-temperature crack resistance and storage stability to strengthen the performance of casting asphalt concrete.
Description
Technical Field
The invention belongs to the technical field of asphalt materials, and particularly relates to a pouring type asphalt concrete modifier and application thereof.
Background
The pouring type asphalt concrete is an asphalt mixture which is mixed at high temperature (220-260 ℃) and paved and molded without rolling depending on the self-fluidity of the mixture, wherein the asphalt mixture has high asphalt content, high mineral powder content and porosity less than 1%, the pouring type asphalt concrete binder comprises common asphalt or modified asphalt, Trinida lake asphalt TLA or the mixture of the common asphalt and the modified asphalt, the TLA generally accounts for 25-30%, fine aggregate (<2mm) generally is limestone, and coarse aggregate generally is basalt macadam. The fifties of the twentieth century originated in germany and have found widespread use in japan.
The pouring type asphalt concrete has good integrity and excellent waterproof performance, the expected service life is more than 20 years, the performance is good in the service period, and the maintenance amount is small. The asphalt concrete is usually used as the lower layer of bridge deck pavement, and under heavy traffic conditions, the pouring asphalt concrete can be used as a base layer, and a modified asphalt concrete surface layer is paved on the base layer. When the pouring asphalt concrete is paved, the stone chips are spread on the surface, and the light rolling machine is used for pressing the stone chips into the surface of the hot asphalt concrete, so that the stability and the mechanical property of a pavement layer can be improved by the spread stone chips. The initial investment of the pouring type asphalt concrete bridge deck pavement is high, but the service life cycle cost and the excellent road performance of the pouring type asphalt concrete bridge deck pavement are superior to those of common pavement materials.
The performance of the cast asphalt concrete mainly depends on the characteristics of the used polymer modified asphalt, and the cast asphalt concrete is generally modified to ensure that the cast asphalt concrete has both high-temperature strength and low-temperature flexibility.
Chinese patent application 201910763095.5 discloses a special modified asphalt for cast asphalt concrete and a preparation method thereof, the components of the modified asphalt comprise: 100 parts of asphalt, 2-15 parts of SBS block copolymer (styrene-butadiene-styrene), 2-15 parts of hard asphalt and 1-10 parts of toughening agent. The special modified asphalt for the cast asphalt concrete can reach or exceed the softening point of the common cast asphalt, and shows that the special modified asphalt has better high-temperature stability; meanwhile, compared with the common casting type modified asphalt, the low-temperature anti-cracking performance is better; by adopting a special preparation method, the modified asphalt has very high storage stability and is not easy to generate segregation and skinning phenomena at high temperature.
Chinese patent application 201910464409.1 discloses a pouring type asphalt concrete modifier, which comprises the following raw materials in parts by weight: 45-55 parts of diene polymer, 30-40 parts of filling oil, 10-20 parts of Fischer-Tropsch wax, 2-10 parts of unsaturated fatty acid and 0.5-3 parts of vulcanizing agent. The application provides a pouring type asphalt concrete modifier can effectually reduce the mixing pouring temperature and the temperature of paving when preparing pouring type asphalt concrete to improve pouring type asphalt concrete's mobility, thereby reduce pouring type asphalt concrete's the construction degree of difficulty.
The conventional SBS modified asphalt generally needs strong mechanical dispersion in the preparation process, is easy to separate when stored in a liquid state, and increases the cost and the operation difficulty. In view of the above, the invention provides a pouring type asphalt concrete modifier, which is prepared by compounding an SIS modifier with nylon, polyaldehyde sodium alginate, sodium hydroxide and naphthenic base rubber oil, is not easy to segregate, and has good high-temperature stability, low-temperature crack resistance and storage stability to strengthen the performance of the pouring type asphalt concrete.
Disclosure of Invention
The invention aims to provide a pouring type asphalt concrete modifier and application thereof, which can strengthen the performance of pouring type asphalt concrete with good high-temperature stability, low-temperature crack resistance and storage stability.
In order to achieve the purpose, the technical scheme of the invention is as follows:
in one aspect, the invention provides a pouring type asphalt concrete modifier, which comprises the following components: styrene-isoprene-styrene block copolymer (SIS), nylon, polyaldehyde group sodium alginate, long chain fatty acid and naphthenic base rubber oil.
Preferably, the weight ratio of the styrene-isoprene-styrene block copolymer (SIS) to the nylon is 20-40:25-45, and more preferably 30: 38.
Preferably, the weight ratio of the polyaldehyde group sodium alginate to the long-chain fatty acid is 3-10:1-10, and more preferably 7: 5.
Preferably, the composition comprises the following components in parts by weight: 10-50 parts of styrene-isoprene-styrene block copolymer (SIS), 10-50 parts of nylon, 1-15 parts of polyaldehyde sodium alginate, 1-10 parts of long-chain fatty acid and 1-20 parts of naphthenic rubber oil.
Further preferably, the composition comprises the following components in parts by weight: 20-40 parts of styrene-isoprene-styrene block copolymer (SIS), 25-45 parts of nylon, 3-10 parts of polyaldehyde sodium alginate, 2-6 parts of long-chain fatty acid and 1-15 parts of naphthenic rubber oil.
Most preferably, the composition comprises the following components in parts by weight: 30 parts of styrene-isoprene-styrene block copolymer (SIS), 38 parts of nylon, 7 parts of polyaldehyde sodium alginate, 5 parts of long-chain fatty acid and 8 parts of naphthenic rubber oil.
Preferably, the long-chain fatty acid is a fatty acid having 18 to 24 carbon atoms, such as stearic acid, oleic acid, linoleic acid, α -linolenic acid, arachidonic acid, eicosapentaenoic acid, docosahexaenoic acid, and the like.
On the other hand, the invention provides the application of the cast asphalt concrete modifier in preparing modified asphalt.
Preferably, in the application, the weight ratio of the pouring type asphalt concrete modifier to the asphalt is 1:50-200, and more preferably 1: 100.
Preferably, the application comprises the step of mixing the cast asphalt concrete modifier with asphalt.
Preferably, the application specifically comprises:
mixing styrene-isoprene-styrene block copolymer (SIS), nylon and naphthenic base rubber oil with formula dosage with asphalt at the temperature of 240-260 ℃ and stirring for 1-3h, then adding multi-aldehyde sodium alginate and long-chain fatty acid, and continuously stirring for 1-3h to obtain the modified asphalt.
In another aspect, the invention provides an application of the cast asphalt concrete modifier in preparation of cast asphalt concrete.
The invention has the beneficial effects that:
the pouring asphalt concrete modifier is used for modifying asphalt, has strong construction operability, and can realize good high-temperature stability, low-temperature crack resistance and storage stability.
Detailed Description
The present invention will be further explained with reference to specific examples in order to make the technical means, the technical features, the technical objectives and the effects of the present invention easier to understand, but the following examples are only preferred embodiments of the present invention, and not all embodiments of the present invention. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. In the following examples, unless otherwise specified, all the procedures used were conventional, all the equipment used were conventional, and all the starting materials used were commercially available.
In the following examples, the properties of styrene-isoprene-styrene block copolymers (SIS) are shown in Table 1:
table 1.
The nylon is Basff A3K; the multi-aldehyde sodium alginate is prepared according to the following steps:
dispersing sodium alginate in absolute ethyl alcohol to prepare a suspension I, dissolving sodium periodate in water to prepare a solution II, adding the solution II into the suspension I according to the molar ratio of the sodium periodate to the sodium alginate monomer unit of 60%, magnetically stirring for 1h at the room temperature in a dark place, and adding ethylene glycol with the same molar ratio as the sodium periodate to terminate the reaction. The reaction mixture was poured into a vigorously stirred volume of absolute ethanol (1: 5V (reaction mixture): V (ethanol)), and a precipitate precipitated. And (3) carrying out suction filtration, carrying out vacuum drying at 40 ℃, dialyzing the obtained solid powder by using distilled water for 24 hours, and removing unreacted sodium periodate, ethylene glycol and other small molecular impurities. And (5) freeze-drying the solution in the dialysis bag to obtain the multi-aldehyde sodium alginate. The long chain fatty acid is eicosapentaenoic acid, and is derived from 6516516 in the howling chemical industry; the naphthenic base rubber oil is Tachang N4006.
Examples 1 to 7
The formulations of examples 1-7 are shown in Table 2, below:
table 2.
Examples 1-7 were all prepared according to the following procedure:
mixing styrene-isoprene-styrene block copolymer (SIS), nylon and naphthenic base rubber oil with formula dosage at 250 deg.C, stirring for 1.5h, adding polyaldehyde group sodium alginate and long chain fatty acid with formula dosage, and stirring for 2h to obtain modified asphalt.
Comparative examples 1 to 3
Unlike example 1, comparative examples 1-3 have the same formulation as shown in Table 3.
Table 3.
Comparative example 4
The difference from example 1 is that the same amount of sodium alginate is used instead of aldehydic sodium alginate, the rest being the same.
Result detection
Referring to test procedures for road asphalt and asphalt mixtures (JTG E20-2011), technical Specifications for road asphalt pavement construction (JTG F40-2004) and AASHTO Designation: m320-09 and the technical guidance for pavement design and construction of the bridge deck of the highway steel box girder.
1. Modified asphalt Performance detection
The softening point, penetration degree, ductility and other properties are detected, and the results are as follows:
table 4.
The results of the film oven aging test are as follows:
table 5.
It can be seen that the modified asphalt prepared in the examples of the present application has good penetration, ductility, elastic recovery and stability, wherein the weight ratio of the styrene-isoprene-styrene block copolymer to the nylon is 20-40:25-45, the weight ratio of the polyaldehyde group sodium alginate to the long chain fatty acid is 3-10:1-10, and the overall performance of the product is the best in the ratio.
2. Modified asphalt concrete performance detection
The samples of examples and comparative examples were uniformly mixed with limestone (85% particle size <2mm, 15% particle size >2mm) in a mass ratio of 4:1, heated at 200 ℃, cast-molded, and subjected to the following tests, respectively.
Table 6.
It can be seen that the modifier prepared by the method improves the high-low temperature performance of concrete.
The present invention is not limited to the above-described preferred embodiments, but rather, the present invention is to be construed broadly and cover all modifications, equivalents, and improvements falling within the spirit and scope of the present invention.
Claims (10)
1. The casting type asphalt concrete modifier is characterized by comprising the following components: styrene-isoprene-styrene block copolymer, nylon, polyaldehyde sodium alginate, long-chain fatty acid and naphthenic base rubber oil.
2. The cast asphalt concrete modifier according to claim 1, wherein the weight ratio of the styrene-isoprene-styrene block copolymer to the nylon is 20-40:25-45, and the weight ratio of the polyaldehyde sodium alginate to the long-chain fatty acid is 3-10: 1-10.
3. The cast asphalt concrete modifier of claim 2, wherein the weight ratio of the styrene-isoprene-styrene block copolymer to the nylon is 30:38, and the weight ratio of the polyaldehyde group sodium alginate to the long chain fatty acid is 7: 5.
4. The cast asphalt concrete modifier according to claim 1, which comprises the following components in parts by weight: 10-50 parts of styrene-isoprene-styrene block copolymer, 10-50 parts of nylon, 1-15 parts of polyaldehyde sodium alginate, 1-10 parts of long-chain fatty acid and 1-20 parts of naphthenic rubber oil.
5. The cast asphalt concrete modifier according to claim 4, which comprises the following components in parts by weight: 20-40 parts of styrene-isoprene-styrene block copolymer, 25-45 parts of nylon, 3-10 parts of polyaldehyde sodium alginate, 2-6 parts of long-chain fatty acid and 1-15 parts of naphthenic rubber oil.
6. The cast asphalt concrete modifier according to claim 1, which comprises the following components in parts by weight: 30 parts of styrene-isoprene-styrene block copolymer, 38 parts of nylon, 7 parts of polyaldehyde sodium alginate, 5 parts of long-chain fatty acid and 8 parts of naphthenic base rubber oil.
7. The use of the cast asphalt concrete modifier according to any one of claims 1 to 6 in the preparation of modified asphalt, wherein the weight ratio of the cast asphalt concrete modifier to asphalt is 1: 50-200.
8. The use of claim 7, comprising the step of mixing the cast asphalt concrete modifier with asphalt.
9. Use according to claim 8, wherein the mixing is in particular: mixing styrene-isoprene-styrene block copolymer, nylon and naphthenic base rubber oil with the formula dosage with asphalt at the temperature of 240-260 ℃ and stirring for 1-3h, then adding multi-aldehyde sodium alginate and long-chain fatty acid, and continuously stirring for 1-3h to obtain the modified asphalt.
10. Use of the cast asphalt concrete modifier according to any one of claims 1 to 6 in the preparation of cast asphalt concrete.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5674313A (en) * | 1993-09-29 | 1997-10-07 | Obayashi Corporation | Rubber modified asphalt type of water-proofing composition |
| US20070173568A1 (en) * | 2003-05-07 | 2007-07-26 | Nippon Shokubai Co., Ltd. | Cement admixture and cement admixture composite |
| CN102051017A (en) * | 2009-11-09 | 2011-05-11 | 赢创德固赛有限公司 | Thermoplastic elastomer mixtures |
| US20140343240A1 (en) * | 2011-09-12 | 2014-11-20 | Nippon Shokubai Co., Ltd. | Poly(carboxylic acid)-based polymer for hydraulic material additive |
| CN104479379A (en) * | 2014-12-30 | 2015-04-01 | 江苏健神生物农化有限公司 | Preparation method for asphalt mixture for road paving |
| CN111036297A (en) * | 2019-12-16 | 2020-04-21 | 浙江大学 | Carbon fiber modified based on iron alginate, preparation method and application |
| CN112029304A (en) * | 2020-09-15 | 2020-12-04 | 重庆市智翔铺道技术工程有限公司 | Polymer modified asphalt and preparation method thereof |
-
2021
- 2021-04-22 CN CN202110435573.7A patent/CN113136084B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5674313A (en) * | 1993-09-29 | 1997-10-07 | Obayashi Corporation | Rubber modified asphalt type of water-proofing composition |
| US20070173568A1 (en) * | 2003-05-07 | 2007-07-26 | Nippon Shokubai Co., Ltd. | Cement admixture and cement admixture composite |
| CN102051017A (en) * | 2009-11-09 | 2011-05-11 | 赢创德固赛有限公司 | Thermoplastic elastomer mixtures |
| US20140343240A1 (en) * | 2011-09-12 | 2014-11-20 | Nippon Shokubai Co., Ltd. | Poly(carboxylic acid)-based polymer for hydraulic material additive |
| CN104479379A (en) * | 2014-12-30 | 2015-04-01 | 江苏健神生物农化有限公司 | Preparation method for asphalt mixture for road paving |
| CN111036297A (en) * | 2019-12-16 | 2020-04-21 | 浙江大学 | Carbon fiber modified based on iron alginate, preparation method and application |
| CN112029304A (en) * | 2020-09-15 | 2020-12-04 | 重庆市智翔铺道技术工程有限公司 | Polymer modified asphalt and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 乔猛: ""海藻酸钠/SBS复合改性沥青及其混合料的性能研究"", 《中国优秀硕士学位论文全文数据库（电子期刊） 工程科技II辑》 * |
| 王琴梅 等: ""多醛基海藻酸钠交联剂的制备及性能"", 《应用化学》 * |
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