CN112250346A - Asphalt concrete pavement construction method - Google Patents
Asphalt concrete pavement construction method Download PDFInfo
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- CN112250346A CN112250346A CN202011150919.0A CN202011150919A CN112250346A CN 112250346 A CN112250346 A CN 112250346A CN 202011150919 A CN202011150919 A CN 202011150919A CN 112250346 A CN112250346 A CN 112250346A
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- asphalt
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- 239000011384 asphalt concrete Substances 0.000 title claims abstract description 114
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000010426 asphalt Substances 0.000 claims abstract description 25
- WJLUBOLDZCQZEV-UHFFFAOYSA-M hexadecyl(trimethyl)azanium;hydroxide Chemical compound [OH-].CCCCCCCCCCCCCCCC[N+](C)(C)C WJLUBOLDZCQZEV-UHFFFAOYSA-M 0.000 claims abstract description 24
- 150000008130 triterpenoid saponins Chemical class 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 238000005204 segregation Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000003712 anti-aging effect Effects 0.000 claims description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 9
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 9
- 239000012744 reinforcing agent Substances 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 8
- WVYSWPBECUHBMJ-UHFFFAOYSA-N 2-methylprop-1-en-1-ol Chemical compound CC(C)=CO WVYSWPBECUHBMJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- GVKDLCPTYCLSQW-YFKNTREVSA-N C(\C=C/C(=O)OC(C)CCCCCC)(=O)OC(C)CCCCCC.[Na] Chemical compound C(\C=C/C(=O)OC(C)CCCCCC)(=O)OC(C)CCCCCC.[Na] GVKDLCPTYCLSQW-YFKNTREVSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000001818 polyoxyethylene sorbitan monostearate Substances 0.000 claims description 3
- 235000010989 polyoxyethylene sorbitan monostearate Nutrition 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000004576 sand Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- -1 p-sulfamate Chemical compound 0.000 description 6
- 239000004575 stone Substances 0.000 description 6
- 229930182493 triterpene saponin Natural products 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 3
- IAJILQKETJEXLJ-QTBDOELSSA-N aldehydo-D-glucuronic acid Chemical group O=C[C@H](O)[C@@H](O)[C@H](O)[C@H](O)C(O)=O IAJILQKETJEXLJ-QTBDOELSSA-N 0.000 description 3
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 3
- 229940063655 aluminum stearate Drugs 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 229940097043 glucuronic acid Drugs 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 3
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 3
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical group [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- KVCGISUBCHHTDD-UHFFFAOYSA-M sodium;4-methylbenzenesulfonate Chemical compound [Na+].CC1=CC=C(S([O-])(=O)=O)C=C1 KVCGISUBCHHTDD-UHFFFAOYSA-M 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The application relates to the field of concrete, and particularly discloses a construction method of an asphalt concrete pavement. The construction method comprises the following steps: step 1), cleaning up sundries on a paved road section, and uniformly paving asphalt concrete on a road surface according to the width and the paving thickness of a road width; step 2), carrying out initial pressing, re-pressing and final pressing on the road surface by using a road roller, checking flatness and road crown, avoiding aggregate segregation and eliminating rolling wheel traces; step 3), curing the asphalt concrete after the rolling is finished; the asphalt concrete in the step 1) is prepared from the following raw materials in parts by mass: 4-8 parts of hexadecyl trimethyl ammonium hydroxide; 3-9 parts of triterpenoid saponin; 250 portions and 350 portions of asphalt; 1000 portions of coarse aggregate and 1500 portions; 50-100 parts of fine aggregate. The asphalt concrete of this application can improve asphalt concrete's anti rutting performance. The construction method of the asphalt concrete pavement can enable the asphalt concrete pavement to be compact and flat.
Description
Technical Field
The application relates to the field of concrete, in particular to a construction method of an asphalt concrete pavement.
Background
Asphalt concrete is a mixture prepared by manually selecting mineral aggregate with a certain gradation composition, broken stone or crushed gravel, stone chips or sand, mineral powder and the like, and mixing the mixture with a certain proportion of road asphalt material under strictly controlled conditions. The asphalt concrete pavement has the advantages of water resistance, corrosion resistance, suitability for mechanical construction, short life cycle, smooth pavement, comfortable driving, low noise, small dust emission and the like, and is often used in expressways and urban roads.
However, as the asphalt concrete is an elastic plastic material and has certain creep and stress relaxation phenomena, under the action of repeated loads of vehicles, the plastic deformation of the asphalt concrete is continuously accumulated and the asphalt concrete is pressed to be compact due to lateral movement, so that the track disease of the asphalt concrete pavement is serious, and larger direct and indirect economic losses are caused.
In view of the above-mentioned related technologies, the inventor believes that the resilience modulus of asphalt concrete is small, the deformation of asphalt concrete under the load of a heavy vehicle is large, and the road surface is easy to generate an obvious rutting phenomenon, which is not beneficial to the driving safety and the road durability in the road operation process.
Disclosure of Invention
In order to improve the anti-rutting performance of the asphalt concrete, the application provides an asphalt concrete pavement construction method.
The application provides an asphalt concrete pavement construction method, which adopts the following technical scheme:
a construction method of an asphalt concrete pavement is characterized by comprising the following steps: the construction method comprises the following steps:
step 1), cleaning up sundries on a paved road section, and uniformly paving asphalt concrete on a road surface according to the width and the paving thickness of a road width;
step 2), carrying out initial pressing, re-pressing and final pressing on the road surface by using a road roller, checking flatness and road crown, avoiding aggregate segregation and eliminating rolling wheel traces;
step 3), curing the asphalt concrete after the rolling is finished;
the asphalt concrete in the step 1) is prepared from the following raw materials in parts by mass:
4-8 parts of hexadecyl trimethyl ammonium hydroxide;
3-9 parts of triterpenoid saponin;
250 portions and 350 portions of asphalt;
1000 portions of coarse aggregate and 1500 portions;
50-100 parts of fine aggregate.
By adopting the technical scheme, the asphalt concrete is repeatedly rolled, so that the asphalt concrete pavement can form an anti-skid wear-resistant, compact and stable structural layer, and the asphalt concrete pavement is maintained to have good strength development conditions.
The addition of the hexadecyl trimethyl ammonium hydroxide can improve and keep the fluidity of the concrete for a long time, so that the concrete still keeps good workability after pressure conveying, and segregation and bleeding are slowed down.
By adding the triterpenoid saponin, a certain amount of micro bubbles can be introduced, the setting and hardening performance and the gas content of the concrete are adjusted, and the durability of the concrete is improved.
By adding the asphalt, the asphalt concrete has extremely low porosity, and the asphalt is insoluble in water, so that the asphalt concrete pavement has the effects of freezing prevention, water resistance, moisture resistance and corrosion resistance.
By adding the coarse aggregate, the skeleton effect is achieved, and the volume change caused by the drying shrinkage and the wet swelling of the gel material in the setting and hardening processes is reduced, so that the asphalt concrete has good volume stability and durability.
By adding the fine aggregate, the fine aggregate can fill gaps between the coarse aggregates, and the compressive strength of the asphalt concrete is increased.
Through the coordination of the hexadecyl trimethyl ammonium hydroxide and the triterpenoid saponin in a specific proportion, the structural strength of the asphalt is improved, so that the asphalt concrete is not easy to deform, and the phenomenon of rutting on the asphalt concrete pavement is reduced, thereby prolonging the service life of the asphalt concrete pavement and improving the driving comfort and the road driving safety of people.
Preferably, the raw materials of the asphalt concrete also comprise the following components in parts by mass:
5-7 parts of a reinforcing agent.
By adopting the technical scheme, the reinforcing agent enables the asphalt concrete pavement to have excellent shock resistance and higher toughness, and can improve the compressive strength of concrete. The reinforcing agent can be talcum powder, homo-polypropylene, co-polypropylene and maleic anhydride grafted polyethylene.
Preferably, the raw materials of the asphalt concrete also comprise the following components in parts by mass:
3-4 parts of anti-stripping agent.
By adopting the technical scheme, the anti-stripping agent physically adsorbs the surfaces of the coarse aggregate and the fine aggregate, so that the adhesiveness of the asphalt with the coarse aggregate and the fine aggregate is improved, and the asphalt concrete has good thermal aging resistance and water damage resistance. The anti-stripping agent can adopt aluminum stearate, lime and epichlorohydrin.
Preferably, the raw materials of the asphalt concrete also comprise the following components in parts by mass:
2-6 parts of anti-aging agent.
By adopting the technical scheme, the anti-aging agent enables the asphalt concrete to have excellent light stability, and the ceramic mass energy can prevent the damage of aging factors such as air, ultraviolet rays and the like to the asphalt concrete in the waterproof and anti-corrosion colleagues, so that the weather resistance, the corrosion resistance and the anti-aging capability of the asphalt concrete are comprehensively improved. The anti-aging agent can be selected from nanometer titanium dioxide powder, 1, 3, 5-trimethyl-2, 4, 6-tri (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, lithium silicate, fatty alcohol-polyoxyethylene ether, and nanometer silica sol.
Preferably, the raw materials of the asphalt concrete also comprise the following components in parts by mass:
3-5 parts of warm mixing agent.
By adopting the technical scheme, the warm mixing agent can reduce the mixing, paving and compacting temperatures, can reduce toxic gases such as asphalt smoke and the like, improves the working environment, and is energy-saving and environment-friendly. The warm mixing agent can be sodium lauryl sulfate, sodium carboxymethylcellulose, sodium polyacrylate, and sodium p-toluenesulfonate.
Preferably, the raw materials of the asphalt concrete also comprise the following components in parts by mass:
1-6 parts of a stabilizer.
By adopting the technical scheme, the stabilizer can obviously improve the penetration degree, the softening point, the film ductility and the heat storage stability of the asphalt concrete. The stabilizer can be glucuronic acid, trichloro-s-triazine, calcium chloride, montmorillonite, vinyl silicone rubber, and styrene-isoprene-styrene block copolymer.
Preferably, the raw materials of the asphalt concrete also comprise the following components in parts by mass:
4-6 parts of an anti-wear agent.
By adopting the technical scheme, the wear-resistant agent can enhance the wear resistance and the impact resistance of the concrete ground, greatly improve the density of the concrete, reduce dust, increase the oil resistance of the pavement, form a high-density, easy-to-clean and anti-permeation asphalt concrete pavement, ensure better durability of the pavement and reduce the cost caused by periodic coating or surface thickening. The wear-resisting agent can be silicon carbide, p-sulfamate, silicon oxide micropowder, aluminum sulfate and ferric trichloride.
Preferably, the raw materials of the asphalt concrete also comprise the following components in parts by mass:
3-8 parts of isobutenol polyoxyethylene ether.
By adopting the technical scheme, the isobutenol polyoxyethylene ether, the hexadecyl trimethyl ammonium hydroxide and the triterpenoid saponin are added to be matched according to a specific proportion, so that the elastic resilience modulus of the asphalt concrete is increased, and the anti-rutting performance of the asphalt concrete is further enhanced.
Preferably, the preparation method of the asphalt concrete comprises the following steps:
step 01) mixing cetyl trimethyl ammonium hydroxide and triterpenoid saponin, heating to 50-60 ℃, and uniformly mixing to obtain a first mixture;
step 02) adding the first mixture into asphalt, heating to 130-;
and 03) adding the second mixture and the fine aggregate into the coarse aggregate, and uniformly mixing to obtain the asphalt concrete.
By adopting the technical scheme, the hexadecyl trimethyl ammonium hydroxide and the triterpenoid saponin are heated and mixed, so that the flowability of the hexadecyl trimethyl ammonium hydroxide and the triterpenoid saponin can be improved, and the hexadecyl trimethyl ammonium hydroxide and the triterpenoid saponin are mixed more uniformly.
Preferably, in the step 01), polyoxyethylene sorbitan monostearate, sodium di-sec-octyl maleate sulfonate and polyoxyethylene methacrylate are also added into the first mixture;
the coarse aggregate obtained in the step 03) is also added with a reinforcing agent, an anti-stripping agent, an anti-aging agent, a warm mixing agent, a stabilizing agent and an anti-wear agent.
By adopting the technical scheme, the polyoxyethylene sorbitan monostearate, the di-sec-octyl maleate sodium sulfonate, the isobutylene alcohol polyoxyethylene ether and the triterpenoid saponin are added into the first mixture together, so that all substances in the first mixture are distributed uniformly, and the dispersing effect is good.
In summary, the present application has the following beneficial effects:
1. according to the application, the hexadecyl trimethyl ammonium hydroxide and the triterpenoid saponin are matched in a specific proportion, so that the structural strength of the asphalt is improved, the asphalt concrete is not easy to deform, the phenomenon of rutting on the asphalt concrete pavement is reduced, and the service life of the asphalt concrete pavement is prolonged.
2. According to the application, the isobutenol polyoxyethylene ether, the hexadecyl trimethyl ammonium hydroxide and the triterpenoid saponin are preferably matched in a specific ratio, so that the elastic resilience modulus of the asphalt concrete is increased, and the anti-rutting performance of the asphalt concrete is further enhanced.
3. According to the asphalt concrete pavement construction method, the asphalt concrete pavement can be compact and stable through repeated rolling, the flatness of the pavement is guaranteed, the embedding and extruding capacity among aggregates is improved, the pavement abrasion is slowed down, and the overall quality of the asphalt concrete pavement is effectively improved.
Detailed Description
The present application will be described in further detail with reference to examples.
The information on the source of each raw material component in the following examples and comparative examples is shown in Table 1
TABLE 1
Examples 1 to 3: the asphalt concrete pavement construction method comprises the following steps:
cetyl trimethyl ammonium hydroxide, triterpenoid saponin, asphalt, coarse aggregate and fine aggregate.
The coarse aggregate comprises sand and stone.
The fine aggregate comprises the compound of fly ash and mineral powder.
In examples 1-3, the amounts (in Kg) of each component added are specified in Table 2
TABLE 2
| Example 1 | Example 2 | Example 3 | |
| Cetyl trimethyl ammonium hydroxide | 4 | 6 | 8 |
| Triterpene saponins | 3 | 6 | 9 |
| Asphalt | 210 | 265 | 320 |
| Sand | 400 | 500 | 600 |
| Stone (stone) | 600 | 750 | 900 |
| Fly ash | 20 | 35 | 50 |
| Mineral powder | 30 | 40 | 50 |
The preparation method of the asphalt concrete of examples 1 to 3 includes the following steps:
step 01) adding cetyl trimethyl ammonium hydroxide and triterpenoid saponin into a movable hot mixer, heating to 55 ℃, rotating at the speed of 200r/min, and continuously stirring for 30min to obtain a first mixture;
step 02) adding asphalt into a movable hot mixer, heating to 135 ℃, rotating at a speed of 200r/min, and continuously stirring for 30min to obtain a second mixture;
and 03) adding the fly ash, the mineral powder, the sand and the stone into a movable hot mixer together, and continuously stirring for 30min at the rotating speed of 200r/min to obtain the asphalt concrete.
Example 4
Compared with the example 2, the preparation method of the asphalt concrete is different only in that:
step 01) adding cetyl trimethyl ammonium hydroxide and triterpenoid saponin into a mobile hot mixer, and heating to 50 ℃;
step 02) adding the asphalt into a movable hot mixer, and heating to 130 ℃.
Example 5
Compared with the example 2, the preparation method of the asphalt concrete is different only in that:
step 01) adding cetyl trimethyl ammonium hydroxide and triterpenoid saponin into a mobile hot mixer, and heating to 60 ℃;
step 02) adding the asphalt into a movable hot mixer together, and heating to 140 ℃.
Examples 6 to 8
Compared with the embodiment 2, the construction method of the asphalt concrete pavement only has the following differences:
the components of the asphalt concrete also comprise the isobutenol polyoxyethylene ether.
In examples 6 to 8, the amounts (in Kg) of the respective components added are specified in Table 3
TABLE 3
| Example 6 | Example 7 | Example 8 | |
| Methylenol polyoxyethylene ether | 3 | 5 | 8 |
The polyoxyethylene methacrylate is added to the mobile heat mixer together with the triterpenoid saponin in step 01).
Examples 9 to 11
Compared with the embodiment 2, the construction method of the asphalt concrete pavement only has the following differences:
the components of the asphalt concrete also comprise a reinforcing agent, an anti-stripping agent, an anti-aging agent, a warm mixing agent, a stabilizing agent and an anti-wear agent.
The reinforcing agent is talcum powder;
the anti-stripping agent is the compound of aluminum stearate and lime;
the anti-aging agent is nano titanium dioxide powder;
the warm mixing agent is a compound of sodium lauryl sulfate and sodium carboxymethyl cellulose;
the stabilizer is the compound of glucuronic acid and trichloro-sym-triazine;
the wear-resisting agent is silicon carbide.
In examples 9 to 11, the amounts (in Kg) of the respective components added are specified in Table 4
TABLE 4
The polyoxyethylene methacrylate is added to the mobile heat mixer together with the triterpenoid saponin in step 01).
Talcum powder, aluminum stearate, lime, nano titanium dioxide powder, sodium lauryl sulfate, sodium carboxymethyl cellulose, glucuronic acid, trichloro-s-triazine and silicon carbide are added into the mobile hot mixer together with asphalt in the step 02).
Example 12
A construction method of an asphalt concrete pavement comprises the following steps:
step 1), cleaning up sundries on a paved road section, and paving asphalt concrete on a road surface according to the width and the paving thickness of a road width;
step 2), carrying out initial pressing, re-pressing and final pressing from the edge to the middle by using a double-steel-wheel road roller, checking flatness and road crown, and eliminating rolling wheel traces without aggregate segregation;
and 3) curing the asphalt concrete after rolling, wherein the curing temperature is 20 ℃, the humidity is 95%, the curing period is 10 days, the traveling speed is limited to 25km/h during the curing period, and heavy vehicles and machinery are forbidden to pass through.
Wherein, the asphalt concrete in the steps 1), 2) and 3) can adopt the asphalt concrete in the embodiments 1 to 9.
Specifically, in this example, the asphalt concrete in example 8 was used as the asphalt concrete.
Comparative example 1
Compared with example 2, the difference is only that:
in the step 1), the hexadecyl trimethyl ammonium hydroxide and the triterpenoid saponin are equivalently replaced by sand.
Comparative example 2
Compared with example 2, the difference is only that:
in step 1), hexadecyl trimethyl ammonium hydroxide is replaced by sand with the same amount.
Comparative example 3
Compared with example 2, the difference is only that:
in the step 1), the triterpene saponin is replaced by sand with the same amount.
Experiment 1
According to JGE10-2011 Experimental regulations for asphalt and asphalt mixtures for road engineering, the asphalt concrete samples prepared in the examples and the comparative examples are taken and kept in a standard constant temperature water bath for 2.5 hours, then a uniaxial compression test is carried out on a RMT-150B testing machine to test the compression resilience modulus of the samples, and the static elasticity modulus E is recordeds/MPa, according to the relation E between the dynamic and static modulid＝(1.45～1.55)EsThe static modulus of resilience is converted to the dynamic modulus of resilience.
For the asphalt concrete, the dynamic modulus range in the specification is 1600-3300 MPa.
Experiment 2
According to JGE10-2011 'road engineering asphalt and asphalt mixture experimental regulations', asphalt concrete test pieces prepared in each embodiment and comparative example are taken to carry out an asphalt concrete rutting test, the volume of each test piece is 300mm x 125mm, the test pieces and a test mold are placed in a constant temperature chamber reaching the test temperature of 60 ℃, the temperature is kept for 8 hours, the wheel pressure is 0.7MPa, and a test wheel travels back and forth for 1 hour.
Reading the deformation curve of the automatic rut deformation recorder for 45min (t)1) Amount of rut deformation d1And 60min (t)2) Amount of rut deformation d2Accurate to 0.01 mm. Calculating the dynamic stability DS [ [ (t)2-t1)*N*C1*C2]/(d2-d1). Wherein DS is the dynamic stability (times/mm) of the asphalt mixture; d1To correspond to time t1Deformation amount (mm) of (c); c1 isThe type coefficient of the testing machine, the reciprocating operation mode of the crank connecting rod driving loading wheel is 1.0; c2For the test piece coefficient, the width of a test piece prepared by a laboratory and 300mm is 1.0; n is the back-and-forth rolling speed of the test wheel, 42 times/min. The 3 test pieces were tested in parallel and the average value of the dynamic stability was calculated.
The assay data for experiments 1-2 are detailed in Table 5
TABLE 5
The static modulus of resilience E with the addition of triterpene saponins was obtained from the comparison of data in comparative example 2 and comparative example 1 in Table 5sDynamic modulus of resilience EdThe dynamic stability is low, and the result proves that the triterpenoid saponin has no obvious effect on the anti-rutting performance of the asphalt concrete.
According to the comparison of the data of comparative example 3 and comparative example 1 in Table 5, the static modulus of resilience E is obtained by adding cetyltrimethylammonium hydroxidesDynamic modulus of resilience EdThe dynamic stability is low, and the evidence proves that the hexadecyl trimethyl ammonium hydroxide has no obvious effect on the anti-rutting performance of the asphalt concrete.
According to the comparison of the data of example 2 and comparative example 1 in Table 5, the static modulus of resilience E of triterpene saponin and hexadecyl trimethyl ammonium hydroxide are addedsObviously increased dynamic stability and dynamic resilience modulus E of asphalt concretedThe triterpene saponin and the hexadecyl trimethyl ammonium hydroxide are matched to increase the structural strength of asphalt, when the asphalt concrete is rolled by a wheel, the deformation amount of the asphalt concrete is reduced, and the elastic deformation resistance of the asphalt concrete is improved, so that the external load bearing capacity of the asphalt concrete pavement is obviously enhanced, and the anti-rutting performance of the asphalt concrete pavement is effectively improved.
According to the comparison of the data of examples 7-9 and example 2 in Table 5, the specific ratio of the combination of the polyoxyethylene methacrylate, the triterpene saponin and the cetyl trimethyl ammonium hydroxide results in the dynamic elastic modulus E of the asphalt concretedMeets the standard of specification, static rebound modulus EsAnd the dynamic stability is further increased, so that the deformation resistance of the asphalt concrete is further improved, and the generation of track diseases on the asphalt concrete pavement can be further effectively prevented.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. A construction method of an asphalt concrete pavement is characterized by comprising the following steps: the construction method comprises the following steps:
step 1), cleaning up sundries on a paved road section, and uniformly paving asphalt concrete on a road surface according to the width and the paving thickness of a road width;
step 2), rolling and pressing the steel plate by a road roller to obtain initial pressing, secondary pressing and final pressing, checking flatness and road crown, and eliminating rolling wheel traces, wherein the aggregate segregation phenomenon does not exist;
step 3), curing the asphalt concrete after the rolling is finished;
the asphalt concrete in the step 1) is prepared from the following raw materials in parts by mass:
4-8 parts of hexadecyl trimethyl ammonium hydroxide;
3-9 parts of triterpenoid saponin;
250 portions and 350 portions of asphalt;
1000 portions of coarse aggregate and 1500 portions;
50-100 parts of fine aggregate.
2. The asphalt concrete pavement construction method according to claim 1, characterized in that: the raw materials of the asphalt concrete also comprise the following components in parts by mass:
5-7 parts of a reinforcing agent.
3. The asphalt concrete pavement construction method according to claim 1, characterized in that: the raw materials of the asphalt concrete also comprise the following components in parts by mass:
3-4 parts of anti-stripping agent.
4. The asphalt concrete pavement construction method according to claim 1, characterized in that: the raw materials of the asphalt concrete also comprise the following components in parts by mass:
2-6 parts of anti-aging agent.
5. The asphalt concrete pavement construction method according to claim 1, characterized in that: the raw materials of the asphalt concrete also comprise the following components in parts by mass:
3-5 parts of warm mixing agent.
6. The asphalt concrete pavement construction method according to claim 1, characterized in that: the raw materials of the asphalt concrete also comprise the following components in parts by mass:
1-6 parts of a stabilizer.
7. The asphalt concrete pavement construction method according to claim 1, characterized in that: the raw materials of the asphalt concrete also comprise the following components in parts by mass:
4-6 parts of an anti-wear agent.
8. The asphalt concrete pavement construction method according to claim 1, characterized in that: the raw materials of the asphalt concrete also comprise the following components in parts by mass:
3-8 parts of isobutenol polyoxyethylene ether.
9. The asphalt concrete pavement construction method according to claim 1, characterized in that: the preparation method of the asphalt concrete comprises the following steps:
step 01) mixing cetyl trimethyl ammonium hydroxide and triterpenoid saponin, heating to 50-60 ℃, and uniformly mixing to obtain a first mixture;
step 02) adding the first mixture into asphalt, heating to 130-;
and 03) adding the second mixture and the fine aggregate into the coarse aggregate, and uniformly mixing to obtain the asphalt concrete.
10. A method of constructing an asphalt pavement as claimed in claim 9, wherein: in the step 01), polyoxyethylene sorbitan monostearate, di-sec-octyl maleate sodium sulfonate and isobutylene polyoxyethylene ether are also added into the first mixture;
in the step 03), a reinforcing agent, an anti-stripping agent, an anti-aging agent, a warm mixing agent, a stabilizing agent and an anti-wear agent are also added into the coarse aggregate.
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| CN116515312A (en) * | 2023-06-06 | 2023-08-01 | 江苏路邦土木科技有限公司 | A kind of warm mix flame retardant asphalt and preparation method thereof |
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