CN107793071B - Asphalt mixture for ultrathin durable anti-skid wearing layer for cement concrete bridge deck - Google Patents
Asphalt mixture for ultrathin durable anti-skid wearing layer for cement concrete bridge deck Download PDFInfo
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- CN107793071B CN107793071B CN201710834114.XA CN201710834114A CN107793071B CN 107793071 B CN107793071 B CN 107793071B CN 201710834114 A CN201710834114 A CN 201710834114A CN 107793071 B CN107793071 B CN 107793071B
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- bridge deck
- asphalt mixture
- cement concrete
- wearing layer
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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
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
- C04B24/121—Amines, polyamines
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/30—Condensation polymers of aldehydes or ketones
- C04B24/307—Urea-formaldehyde condensation polymers
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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
- 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
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
Abstract
The scheme relates to an ultrathin durable asphalt mixture for an anti-sliding wear layer for a cement concrete bridge deck, which comprises the following materials in parts by weight: 100 parts of aggregate; 6-12 parts of styrene butadiene rubber modified asphalt; 3-7 parts of acrylic acid copolymer emulsion; 8-16 parts of urea-formaldehyde resin; 1-3 parts of an amine curing agent; 3-5 parts of a composite stabilizer; 1-5 parts of dibutyl phthalate; 5-10 parts of ethyl acetate; 20-30 parts of water. The asphalt mixture for the ultrathin durable anti-skid wearing layer has the advantages of low cost, simple preparation process and wide sources, can be widely used for paving the anti-skid wearing layer of the road, and effectively improves the surface function of the bridge deck; the road surface coating has excellent road performance, mechanical property and durability, and ensures the possibility of using the road surface coating as a road surface structure layer.
Description
Technical Field
The invention belongs to the field of road engineering, relates to an asphalt mixture, and particularly relates to an asphalt mixture for an ultrathin durable anti-sliding wear layer for a cement concrete bridge deck.
Background
In recent years, with the increase of the traffic volume and the axle load in China and the more and more rigorous climate conditions, the cement concrete bridge deck pavement layer in China generally has serious early damage, the service life of the bridge deck pavement layer is greatly influenced, and huge economic loss is caused. The bridge is used as a suspended structure, and the bridge deck pavement layer on the bridge is sensitive to the change of natural factors and is easier to cause early diseases than the asphalt pavement of a roadbed road section. Investigation shows that in hot summer, the temperature of the steel bridge deck is 25-35 ℃ higher than the air temperature, and the probability of rutting is higher than that of a common road section; the deck is more sensitive to low temperature and temperature lift cycles and is therefore more susceptible to various forms of cracking.
In a severe working environment, the damage of the bridge deck pavement layer is continuous, for example, the time for building a two-bridge of Changjiang river in Wuhan in China to be communicated is short, cracks, concrete peeling, steel bars are exposed, and a plurality of pot holes with different sizes are formed in the bridge deck pavement layer; the bridge deck pavement layer on the Wuhuang highway in Hubei province has been opened for 3 years, the area of cracking and damage reaches 27.5 percent of the total pavement layer area, and some bridge deck pavement layers are damaged again in less than one year after maintenance and almost need to be maintained every year; the steel fiber bridge deck pavement layer of the Shantou gulf bridge has more cracks after being used for two months, the traffic is less than two years, and the area needing to be repaired occupies 3/4 of the area of a traffic lane; the Guangdong province Buddha opens the highway, opens less than two years, and 17 bridges of whole line have 14 to be reworked and maintained.
Although many researches are made on bridge deck pavement at home and abroad, the problem of bridge deck pavement diseases is not solved well all the time, if an effective preventive maintenance technology cannot be adopted in time, the service life is reached quickly, and expensive major repair and intermediate repair are faced, so that a bridge deck pavement technology and a preventive maintenance technology are urgently needed in the bridge deck pavement maintenance market, and the effects of recovering pavement strength, prolonging the service life and improving the anti-skid performance are achieved.
Disclosure of Invention
Aiming at the technical problems in the prior art, the scheme provides the asphalt mixture for the ultrathin durable anti-sliding wearing layer, and after paving, the ultrathin wearing layer can solve the problems of anti-sliding and anti-wearing in preventive maintenance and has good road performance, mechanical property and overlong durability.
In order to achieve the purpose, the scheme is achieved through the following technical scheme:
an ultrathin durable asphalt mixture for an anti-sliding wear layer for a cement concrete bridge deck comprises the following materials in parts by weight:
the composite stabilizer is a mixture of more than two of ammonium chloride, aluminum sulfate, hydroxypropyl cellulose and polyethylene glycol 200 in any proportion;
1-5 parts of dibutyl phthalate;
5-10 parts of ethyl acetate;
20-30 parts of water.
Preferably, the asphalt mixture for the ultrathin durable anti-sliding wear layer for the cement concrete bridge deck comprises the following components in parts by mass:
30-55 wt% of extra-fine sand;
45-70 wt% of broken stone aggregate.
Preferably, the asphalt mixture for the ultrathin durable anti-sliding wearing layer for the cement concrete bridge deck is characterized in that the particle size range of the superfine sand is 1.18-2.36 mm.
Preferably, the asphalt mixture for the ultrathin durable anti-sliding wearing layer for the cement concrete bridge deck is characterized in that the crushed aggregate is selected from one or more of basalt, diabase and amphibole, and the particle size of the crushed aggregate is 2.36-4.75 mm.
Preferably, the asphalt mixture for the ultrathin durable anti-sliding wear layer for the cement concrete bridge deck is prepared from urea-formaldehyde resin, wherein the solid content of the urea-formaldehyde resin is 50-55%.
Preferably, the asphalt mixture for the ultrathin durable anti-sliding wearing layer for the cement concrete bridge deck is prepared by mixing the amine curing agent with the asphalt mixture for the ultrathin durable anti-sliding wearing layer for the cement concrete bridge deck, wherein the amine curing agent is one or more selected from benzidine, m-xylylenediamine, methylcyclohexanediamine and isophorone diamine.
The invention has the beneficial effects that:
the asphalt mixture for the ultrathin durable anti-sliding wearing layer has the advantages of low cost, simple preparation process and wide sources, can be widely used for paving the anti-sliding wearing layer of the cement concrete bridge deck, does not increase the self weight of the bridge, and effectively improves the surface function of the bridge deck; the road surface coating has excellent road performance, mechanical property and durability, and ensures the possibility of using the road surface coating as a road surface structure layer.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
Examples
Paving an ultra-thin durable anti-sliding wearing layer with the thickness of 8-12 mm on the original cement concrete bridge surface, wherein 100kg of aggregate is taken as an example, and the raw materials for paving the ultra-thin durable anti-sliding wearing layer are as follows in weight ratio:
an asphalt mixture for an ultrathin durable anti-sliding wearing layer comprises the following materials in parts by weight:
the aggregate comprises the following components in parts by mass:
30-55 wt% of extra-fine sand;
45-80 wt% of mineral filler.
Wherein the particle size range of the superfine sand is 1.18-2.36 mm, and the particle size range of the broken stone aggregate is 2.36-4.75 mm. The grading of the aggregate is greatly improved to be reasonably and uniformly distributed, and the intermittent grading method is adopted to ensure that the aggregate particles are regularly and orderly arranged, so that the internal structure is uniform, the product performance is stable, the comprehensive strength is high, and the anti-skid capability is good. The mineral filler is selected from one or more of basalt, limestone and magma, and the mineral filler with rich edges and corners and the neutral or alkaline superfine sand with good adhesion performance with the asphalt binder are added, so that the road surface can be ensured to have large edges and corners exposed after a certain service life, and the longer anti-sliding and anti-grinding capability is provided.
The modified asphalt of styrene-butadiene rubber is made up by using styrene-butadiene rubber modifier and water, its matrix asphalt is one of No. 70 heavy-cross asphalt, No. 90 heavy-cross asphalt, No. 100 general road asphalt, No. 10 building asphalt or coal-base asphalt, preferably No. 70 heavy-cross asphalt or No. 90 heavy-cross asphalt, and the styrene-butadiene rubber modifier possesses high elasticity, does not soften at high temp., does not become brittle at low temp., and can improve the high-temp. and low-temp. properties of asphalt, and because the styrene-butadiene rubber possesses good high elasticity, its self-recovery after deformation and self-healing property of crack can be greatly raised. The acrylic acid copolymer emulsion can improve the elongation at break, the tensile strength and the bonding strength of the product, and can also obviously increase the viscosity of the product.
The urea-formaldehyde resin is thermosetting resin, has the advantages of fast condensation, high strength, chemical corrosion resistance, wear resistance, durability and the like, is combined with an amine curing agent, enables an asphalt mixture to generate a chemical crosslinking reaction at room temperature environment to form a space network structure with high bonding performance, thereby greatly improving the wear resistance and the skid resistance of the skid-resistant wearing layer. The solid content of the urea-formaldehyde resin is 50-55%, and the adhesive force of the styrene-butadiene rubber modified asphalt mixture can be met while the viscosity and the fluidity of the asphalt mixture are changed. The addition of the dibutyl phthalate can improve the high-temperature stability, the cohesiveness and the permanent resistance of the superfine durable anti-sliding wearing layer, because the dibutyl phthalate promotes the asphalt mixture to be converted from a sol structure to a gel structure, and a homogeneous system is easy to form.
The composite stabilizer is a mixture of more than two of ammonium chloride, aluminum sulfate, hydroxypropyl cellulose and polyethylene glycol 200 in any proportion. When the composite stabilizer is an inorganic stabilizer, the compatibility of the styrene butadiene rubber modified asphalt and other components can be improved; organic stabilizers, when selected, can help to adjust the viscosity of the overall system.
The following table lists some specific examples and comparative examples:
the following table shows the results of the performance tests of the examples and comparative examples:
from the above table, it can be seen that the asphalt mixture for the superfine durable anti-skid wearing layer has better high-temperature stability, and compared with other anti-skid wearing layers, the high-temperature performance is greatly improved, so that the high-temperature stability of a road can be effectively improved; the wear-resistant and wear-resistant layer has better low-temperature crack resistance, and far meets the requirements of durability that the water stability MS is more than 80% and the TSR is more than 75% in technical Specification for construction of road asphalt pavements (JTG F40-2004), and compared with other wear-resistant layers, the wear-resistant layer has obviously improved low-temperature performance; the road surface has better skid resistance, and the requirement that the BPN coefficient is more than 55 in the road asphalt pavement design specification (JTGD50-2006) is far met, and meanwhile, the skid resistance is obviously improved compared with the common road surface in the comparative example; compared with other anti-sliding wearing layers in the comparative example, the mass loss rate per unit area is obviously reduced, and the wear resistance of the durable anti-sliding wearing layer is obviously improved.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (6)
1. An ultrathin durable asphalt mixture for an anti-sliding wear layer for a cement concrete bridge deck comprises the following materials in parts by weight:
the composite stabilizer is a mixture of more than two of ammonium chloride, aluminum sulfate, hydroxypropyl cellulose and polyethylene glycol 200 in any proportion;
1-5 parts of dibutyl phthalate;
5-10 parts of ethyl acetate;
20-30 parts of water.
2. The asphalt mixture for the ultrathin durable anti-sliding wearing layer for the cement concrete bridge deck as claimed in claim 1, wherein the aggregate is composed of the following components in parts by mass:
30-55 wt% of extra-fine sand;
45-70 wt% of broken stone aggregate.
3. The asphalt mixture for an ultra-thin durable anti-sliding wearing layer for a cement concrete bridge deck according to claim 2, wherein the particle size of the ultra-fine sand is in the range of 1.18 to 2.36 mm.
4. The asphalt mixture for an ultra-thin durable anti-sliding wearing layer for a cement concrete bridge deck according to claim 2, wherein the crushed stone aggregate is selected from one or more of basalt, diabase and amphibole, and has a particle size ranging from 2.36mm to 4.75 mm.
5. The asphalt mixture for an ultrathin durable anti-sliding wearing layer for a cement concrete bridge deck according to claim 1, wherein the solid content of the urea-formaldehyde resin is 50 to 55 percent.
6. An asphalt mixture for an ultra-thin durable anti-slip wearing layer for cement concrete bridge deck according to claim 1, wherein said amine curing agent is one or more selected from the group consisting of benzidine, m-xylylenediamine, methylcyclohexanediamine, and isophoronediamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710834114.XA CN107793071B (en) | 2017-09-15 | 2017-09-15 | Asphalt mixture for ultrathin durable anti-skid wearing layer for cement concrete bridge deck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710834114.XA CN107793071B (en) | 2017-09-15 | 2017-09-15 | Asphalt mixture for ultrathin durable anti-skid wearing layer for cement concrete bridge deck |
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| Publication Number | Publication Date |
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| CN107793071A CN107793071A (en) | 2018-03-13 |
| CN107793071B true CN107793071B (en) | 2020-06-30 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109265054A (en) * | 2018-09-08 | 2019-01-25 | 平湖市中建沥青混凝土工程有限公司 | Ultra-thin wearing layer bituminous mixture and preparation method thereof |
| CN110156378A (en) * | 2019-04-03 | 2019-08-23 | 中路高科(北京)公路技术有限公司 | Cement-water-based acrylic resin emulsified bitulith and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143968A (en) * | 2006-09-15 | 2008-03-19 | 中国石油化工股份有限公司 | Waste rubber powder modified asphalt composition for increasing storage stability and preparation method thereof |
| CN101343162A (en) * | 2008-08-25 | 2009-01-14 | 武汉理工大学 | High-ductility polymer-rubber powder-honey-combed cement concrete road covering material and construction process thereof |
| CN101508848A (en) * | 2009-03-18 | 2009-08-19 | 广州路翔股份有限公司 | Modified emulsified asphalt, production method and CA mortar comprising the emulsified asphalt |
| WO2016008372A1 (en) * | 2014-07-12 | 2016-01-21 | 广西金雨伞防水装饰有限公司 | Bridged-type waterproof coating material, and production method and use therefor |
-
2017
- 2017-09-15 CN CN201710834114.XA patent/CN107793071B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143968A (en) * | 2006-09-15 | 2008-03-19 | 中国石油化工股份有限公司 | Waste rubber powder modified asphalt composition for increasing storage stability and preparation method thereof |
| CN101343162A (en) * | 2008-08-25 | 2009-01-14 | 武汉理工大学 | High-ductility polymer-rubber powder-honey-combed cement concrete road covering material and construction process thereof |
| CN101508848A (en) * | 2009-03-18 | 2009-08-19 | 广州路翔股份有限公司 | Modified emulsified asphalt, production method and CA mortar comprising the emulsified asphalt |
| WO2016008372A1 (en) * | 2014-07-12 | 2016-01-21 | 广西金雨伞防水装饰有限公司 | Bridged-type waterproof coating material, and production method and use therefor |
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Denomination of invention: Asphalt mixture for ultra-thin and durable anti slip wear layer of cement concrete bridge deck Effective date of registration: 20230912 Granted publication date: 20200630 Pledgee: Nanjing Bank Co.,Ltd. Nanjing Financial City Branch Pledgor: NANJING ROAD KEEPER TECHNOLOGY Co.,Ltd. Registration number: Y2023980056289 |
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