CN109881554B - Construction method of modified asphalt cement concrete pavement - Google Patents
Construction method of modified asphalt cement concrete pavement Download PDFInfo
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- CN109881554B CN109881554B CN201910157881.0A CN201910157881A CN109881554B CN 109881554 B CN109881554 B CN 109881554B CN 201910157881 A CN201910157881 A CN 201910157881A CN 109881554 B CN109881554 B CN 109881554B
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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
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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
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- 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
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
- E01C7/265—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre with rubber or synthetic resin, e.g. with rubber aggregate, with synthetic resin binder
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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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
A construction method of a modified asphalt cement concrete pavement comprises the following steps: modified asphalt cement concrete mixture: adding 50-60 parts by weight of cement, 150 parts by weight of 100-one-stone-sand; the modified asphalt used in the invention enables the modified asphalt cement concrete to have better dynamic stability and residual stability, the porosity is improved, and the frost resistance is improved. In addition, the addition of the modified asphalt can improve the bonding performance of the concrete and the interfacial agent. The phenomenon that the concrete pavement is easy to peel is improved.
Description
Technical Field
The invention relates to a construction method of a modified asphalt cement concrete pavement, belonging to the technical field of pavement construction.
Background
With the increasing traffic flow, the traffic density is large, the vehicles are large in size, the heavy load and overload are serious, the vehicle speed is high, the load action time is short, the density increase is accelerated, and the requirements on the road surface are higher and higher. Highway facings have high peel resistance requirements, which require good adhesion of the facings to extend service life. The pavement often cannot meet the requirement of adhesion, the pavement is subjected to repeated loading after being formed to separate the surface layer from the base layer, and at present, no method for effectively improving the firm adhesion between the base layer and the pavement layer to prolong the service life of the pavement still exists.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a construction method of a modified asphalt cement concrete pavement.
A construction method of a modified asphalt cement concrete pavement comprises the following steps: the method comprises the following steps:
step one, bottom surface interface agent treatment: after the surface of the road bottom layer is cleaned, spraying an interface agent on the surface of the road bottom layer, standing for 10 minutes after uniform spraying, and spraying for the second time; the interface agent comprises the following components in parts by mass: 10-15 parts of acrylamide, 10-12 parts of acrylic resin, 5-10 parts of styrene-butadiene emulsion, 3-6 parts of polyethylene glycol, 1-3 parts of resorcinol, 150 parts of acetone and 180 parts of water,
step two, preparing modified asphalt: heating 1 part of matrix asphalt by weight to 170 ℃, adding 0.15-0.2 part of terpene resin, 0.05-0.1 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate, and uniformly mixing and stirring; the temperature of the mixture is raised to 185 ℃, after shearing for 30 minutes at 900rpm, the temperature is reduced to 165 ℃, 0.1 to 0.15 part of polyoxyethylene nonyl phenyl ether is added, shearing is carried out for 20 minutes at 1200rpm, 0.05 to 0.1 part of graphite and 0.05 to 0.1 part of dolomite powder are added, high-speed shearing is carried out for 15 minutes at 1600rpm, and the temperature is reduced to 40 to 50 ℃ to obtain the modified asphalt for standby.
Step three, pre-preparing a modified asphalt cement concrete mixture: adding 50-60 parts by weight of cement, 150 parts by weight of 100-one-stone-sand;
step four, paving the pavement: paving a modified asphalt cement concrete mixture on the road bottom layer treated by the interface agent, forming a modified asphalt cement concrete pavement after hardening, covering a wet straw mat on the surface of the modified asphalt cement concrete pavement for curing for 3-6 days.
Preferably, in the construction method of the modified asphalt cement concrete pavement, the total spraying amount of the interface agent in two times is about 0.3-0.6kg/m2, the first spraying amount is about 0.2-0.3kg/m2, and the second spraying amount is about 0.1-0.3kg/m 2.
Preferably, in the construction method of the modified asphalt cement concrete pavement, the interface agent comprises the following components in parts by mass: 11 parts of acrylamide, 11 parts of acrylic ester resin, 6 parts of styrene-butadiene emulsion, 5 parts of polyethylene glycol, 1 part of resorcinol, 50 parts of acetone and 55 parts of water.
Preferably, in the construction method of the modified asphalt cement concrete pavement, the interface agent comprises the following components in parts by mass: 10 parts of acrylamide, 12 parts of acrylic resin, 6 parts of styrene-butadiene emulsion, 3 parts of polyethylene glycol, 1 part of resorcinol, 45 parts of acetone and 60 parts of water.
Preferably, the construction method of the modified asphalt cement concrete pavement comprises the following steps: stone: sand: phosphogypsum: diatomite: water: the weight ratio of the modified asphalt is 50-60: 100-150: 100-120: 10-15: 10-20: 20-30: 50-80.
Preferably, the construction method of the modified asphalt cement concrete pavement comprises the following steps: stone: sand: phosphogypsum: diatomite: water: the weight ratio of the modified asphalt is 52: 140: 100: 10: 12: 25: 70.
preferably, the construction method of the modified asphalt cement concrete pavement comprises the step of curing for 5 days in the fourth step.
Preferably, in the construction method of the modified asphalt cement concrete pavement, the interval between the bottom layer treated by the interface agent and the modified asphalt cement concrete mixture paved in the fourth step is not more than 30 minutes
Preferably, in the second step, 1 part of the matrix asphalt is heated to 170 ℃, 0.15 part of terpene resin, 0.08 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate are added, and the mixture is uniformly mixed and stirred.
Preferably, the interval between the bottom layer treated by the interface agent and the modified asphalt cement concrete mixture paved in the fourth step is not more than 30 minutes
Preferably, the roadbed layer is a cement-stabilized rubble layer or a water-stabilized gravel base layer
Preferably, the total amount of the interface agent sprayed twice is 0.3-0.6kg/m2, the first spraying amount is 0.2-0.3kg/m2, the second spraying amount is 0.1-0.3kg/m2,
preferably, 50 to 80 parts of the modified asphalt obtained in the step two is added into the step three, the stirring temperature is kept between 40 and 50 ℃, the mixture is stirred for 3 to 5 minutes to obtain a modified asphalt cement concrete mixture,
the interface agent has strong caking property, and is easy to permeate into surface gaps to form chemical action force to increase the binding force between a road bottom layer and a modified asphalt cement concrete pavement, the interface agent has 1.2-1.4MPa of 1 hour shearing bonding strength, 1.6-1.8MPa of 3 hour shearing bonding strength, 0.15-0.17MPa of 1 hour tensile bonding strength and 0.19-0.21MPa of 3 hour tensile bonding strength, and the modified asphalt cement concrete has better dynamic stability and residual stability, the porosity is improved, and the frost resistance is improved. In addition, the addition of the modified asphalt can improve the bonding performance of the concrete and the interfacial agent. The phenomenon that the concrete pavement is easy to peel is improved.
Detailed Description
Example 1
A construction method of a modified asphalt cement concrete pavement comprises the following steps: the method comprises the following steps:
step one, bottom surface interface agent treatment: after the surface of the road bottom layer is cleaned, spraying an interface agent on the surface of the road bottom layer, standing for 10 minutes after uniform spraying, and spraying for the second time; the interface agent comprises the following components in parts by mass: 10 parts of acrylamide, 11 parts of acrylic resin, 6 parts of styrene-butadiene emulsion, 4 parts of polyethylene glycol, 3 parts of resorcinol, 120 parts of acetone and 160 parts of water,
step two, preparing modified asphalt: heating 1 part of matrix asphalt by weight to 170 ℃, adding 0.16 part of terpene resin, 0.05 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate, and uniformly mixing and stirring; the temperature of the mixture is raised to 185 ℃, after shearing for 30 minutes at 900rpm, the temperature is reduced to 165 ℃, 0.15 part of polyoxyethylene nonyl phenyl ether is added, shearing is carried out for 20 minutes at 1200rpm, 0.07 part of graphite and 0.06 part of dolomite powder are added, high-speed shearing is carried out for 15 minutes at 1600rpm, and the temperature is reduced to 40-50 ℃ to obtain the modified asphalt for standby.
Step three, pre-preparing a modified asphalt cement concrete mixture: adding 52 parts by weight of cement, 140 parts by weight of stone, 120 parts by weight of sand, 10 parts by weight of phosphogypsum, 18 parts by weight of diatomite and 28 parts by weight of water into a stirrer, stirring for 10 minutes, preheating a stirring material at the preheating temperature of 40-50 ℃, adding 60 parts by weight of the modified asphalt obtained in the second step, and stirring for 3-5 minutes to obtain a modified asphalt cement concrete mixture;
step four, paving the pavement: paving a modified asphalt cement concrete mixture on the road bottom layer treated by the interface agent, forming a modified asphalt cement concrete pavement after hardening, covering a wet straw mat on the surface of the modified asphalt cement concrete pavement for curing for 5 days.
Example 2
A construction method of a modified asphalt cement concrete pavement comprises the following steps: the method comprises the following steps:
step one, bottom surface interface agent treatment: after the surface of the road bottom layer is cleaned, spraying an interface agent on the surface of the road bottom layer, standing for 10 minutes after uniform spraying, and spraying for the second time; the interface agent comprises the following components in parts by mass: 14 parts of acrylamide, 12 parts of acrylic resin, 9 parts of styrene-butadiene emulsion, 5 parts of polyethylene glycol, 1 part of resorcinol, 100 parts of acetone and 180 parts of water,
step two, preparing modified asphalt: heating 1 part of matrix asphalt by weight to 170 ℃, adding 0.2 part of terpene resin, 0.05 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate, and uniformly mixing and stirring; the temperature of the mixture is raised to 185 ℃, after shearing for 30 minutes at 900rpm, the temperature is reduced to 165 ℃, 0.12 part of polyoxyethylene nonyl phenyl ether is added, shearing is carried out for 20 minutes at 1200rpm, 0.09 part of graphite and 0.08 part of dolomite powder are added, high-speed shearing is carried out for 15 minutes at 1600rpm, and the temperature is reduced to 45 ℃ to obtain the modified asphalt for standby.
Step three, pre-preparing a modified asphalt cement concrete mixture: adding 54 parts by weight of cement, 120 parts by weight of stone, 100 parts by weight of sand, 13 parts by weight of phosphogypsum, 11 parts by weight of diatomite and 28 parts by weight of water into a stirrer, stirring for 10 minutes, preheating a stirring material at 45 ℃, adding 70 parts by weight of the modified asphalt obtained in the second step, and stirring for 3-5 minutes to obtain a modified asphalt cement concrete mixture;
step four, paving the pavement: paving a modified asphalt cement concrete mixture on the road bottom layer treated by the interface agent, forming a modified asphalt cement concrete pavement after hardening, covering a wet straw mat on the surface of the modified asphalt cement concrete pavement for curing for 4 days.
Example 3
A construction method of a modified asphalt cement concrete pavement comprises the following steps: the method comprises the following steps:
step one, bottom surface interface agent treatment: after the surface of the road bottom layer is cleaned, spraying an interface agent on the surface of the road bottom layer, standing for 10 minutes after uniform spraying, and spraying for the second time; the interface agent comprises the following components in parts by mass: 14 parts of acrylamide, 10 parts of acrylic resin, 10 parts of styrene-butadiene emulsion, 5 parts of polyethylene glycol, 3 parts of resorcinol, 150 parts of acetone and 170 parts of water,
step two, preparing modified asphalt: heating 1 part of matrix asphalt by weight to 170 ℃, adding 0.15 part of terpene resin, 0.08 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate, and uniformly mixing and stirring; the temperature of the mixture is raised to 185 ℃, after shearing for 30 minutes at 900rpm, the temperature is reduced to 165 ℃, 0.11 part of polyoxyethylene nonyl phenyl ether is added, shearing is carried out for 20 minutes at 1200rpm, 0.06 part of graphite and 0.07 part of dolomite powder are added, high-speed shearing is carried out for 15 minutes at 1600rpm, and the temperature is reduced to 40-50 ℃ to obtain the modified asphalt for standby.
Step three, pre-preparing a modified asphalt cement concrete mixture: adding 51 parts by weight of cement, 110 parts by weight of stone, 110 parts by weight of sand, 14 parts by weight of phosphogypsum, 17 parts by weight of diatomite and 26 parts by weight of water into a stirrer, stirring for 10 minutes, preheating a stirring material at the preheating temperature of 40-50 ℃, adding 65 parts by weight of the modified asphalt obtained in the second step, and stirring for 3-5 minutes to obtain a modified asphalt cement concrete mixture;
step four, paving the pavement: paving a modified asphalt cement concrete mixture on the road bottom layer treated by the interface agent, forming a modified asphalt cement concrete pavement after hardening, covering a wet straw mat on the surface of the modified asphalt cement concrete pavement for curing for 6 days.
Example 4
A construction method of a modified asphalt cement concrete pavement comprises the following steps: the method comprises the following steps:
step one, bottom surface interface agent treatment: after the surface of the road bottom layer is cleaned, spraying an interface agent on the surface of the road bottom layer, standing for 10 minutes after uniform spraying, and spraying for the second time; the interface agent comprises the following components in parts by mass: 10 parts of acrylamide, 10 parts of acrylic resin, 10 parts of styrene-butadiene emulsion, 5 parts of polyethylene glycol, 1 part of resorcinol, 140 parts of acetone and 150 parts of water,
step two, preparing modified asphalt: heating 1 part of matrix asphalt by weight to 170 ℃, adding 0.15 part of terpene resin, 0.1 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate, and uniformly mixing and stirring; the temperature of the mixture is raised to 185 ℃, after shearing for 30 minutes at 900rpm, the temperature is reduced to 165 ℃, 0.14 part of polyoxyethylene nonyl phenyl ether is added, shearing is carried out for 20 minutes at 1200rpm, 0.08 part of graphite and 0.09 part of dolomite powder are added, high-speed shearing is carried out for 15 minutes at 1600rpm, and the temperature is reduced to 40-50 ℃ to obtain the modified asphalt for later use.
Step three, pre-preparing a modified asphalt cement concrete mixture: adding 54 parts by weight of cement, 135 parts by weight of stone, 115 parts by weight of sand, 11 parts by weight of phosphogypsum, 17 parts by weight of diatomite and 28 parts by weight of water into a stirrer, stirring for 10 minutes, preheating a stirring material at the preheating temperature of 40-50 ℃, adding 70 parts by weight of the modified asphalt obtained in the second step, and stirring for 3-5 minutes to obtain a modified asphalt cement concrete mixture;
step four, paving the pavement: paving a modified asphalt cement concrete mixture on the road bottom layer treated by the interface agent, forming a modified asphalt cement concrete pavement after hardening, covering a wet straw mat on the surface of the modified asphalt cement concrete pavement for curing, and curing for 3 days.
Example 5
A construction method of a modified asphalt cement concrete pavement comprises the following steps: the method comprises the following steps:
step one, bottom surface interface agent treatment: after the surface of the road bottom layer is cleaned, spraying an interface agent on the surface of the road bottom layer, standing for 10 minutes after uniform spraying, and spraying for the second time; the interface agent comprises the following components in parts by mass: 13 parts of acrylamide, 11 parts of acrylic resin, 5 parts of styrene-butadiene emulsion, 4 parts of polyethylene glycol, 1 part of resorcinol, 150 parts of acetone and 170 parts of water,
step two, preparing modified asphalt: heating 1 part of matrix asphalt by weight to 170 ℃, adding 0.15-0.2 part of terpene resin, 0.07 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate, and uniformly mixing and stirring; the temperature of the mixture is raised to 185 ℃, after shearing for 30 minutes at 900rpm, the temperature is reduced to 165 ℃, 0.13 part of polyoxyethylene nonyl phenyl ether is added, shearing is carried out for 20 minutes at 1200rpm, 0.08 part of graphite and 0.06 part of dolomite powder are added, high-speed shearing is carried out for 15 minutes at 1600rpm, and the temperature is reduced to 40-50 ℃ to obtain the modified asphalt for later use.
Step three, pre-preparing a modified asphalt cement concrete mixture: adding 51 parts by weight of cement, 145 parts by weight of stone, 105 parts by weight of sand, 14 parts by weight of phosphogypsum, 13 parts by weight of diatomite and 22 parts by weight of water into a stirrer, stirring for 10 minutes, preheating a stirring material at the preheating temperature of 40-50 ℃, adding 64 parts by weight of the modified asphalt obtained in the second step, and stirring for 3-5 minutes to obtain a modified asphalt cement concrete mixture;
step four, paving the pavement: paving a modified asphalt cement concrete mixture on the road bottom layer treated by the interface agent, forming a modified asphalt cement concrete pavement after hardening, covering a wet straw mat on the surface of the modified asphalt cement concrete pavement for curing for 5 days.
Example 6
A construction method of a modified asphalt cement concrete pavement comprises the following steps: the method comprises the following steps:
step one, bottom surface interface agent treatment: after the surface of the road bottom layer is cleaned, spraying an interface agent on the surface of the road bottom layer, standing for 10 minutes after uniform spraying, and spraying for the second time; the interface agent comprises the following components in parts by mass: 15 parts of acrylamide, 11 parts of acrylic resin, 6 parts of styrene-butadiene emulsion, 3 parts of polyethylene glycol, 3 parts of resorcinol, 110 parts of acetone and 180 parts of water,
step two, preparing modified asphalt: heating 1 part of matrix asphalt by weight to 170 ℃, adding 0.2 part of terpene resin, 0.1 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate, and uniformly mixing and stirring; the temperature of the mixture is raised to 185 ℃, after shearing for 30 minutes at 900rpm, the temperature is reduced to 165 ℃, 0.15 part of polyoxyethylene nonyl phenyl ether is added, shearing is carried out for 20 minutes at 1200rpm, 0.08 part of graphite and 0.05-0.1 part of dolomite powder are added, high-speed shearing is carried out for 15 minutes at 1600rpm, and the temperature is reduced to 40-50 ℃ to obtain the modified asphalt for later use.
Step three, pre-preparing a modified asphalt cement concrete mixture: adding 56 parts by weight of cement, 140 parts by weight of stone, 100 parts by weight of sand, 11 parts by weight of phosphogypsum, 14 parts by weight of diatomite and 28 parts by weight of water into a stirrer, stirring for 10 minutes, preheating a stirring material at the preheating temperature of 40-50 ℃, adding 55 parts by weight of the modified asphalt obtained in the second step, and stirring for 3-5 minutes to obtain a modified asphalt cement concrete mixture;
step four, paving the pavement: paving a modified asphalt cement concrete mixture on the road bottom layer treated by the interface agent, forming a modified asphalt cement concrete pavement after hardening, covering a wet straw mat on the surface of the modified asphalt cement concrete pavement for curing for 6 days.
TABLE 1 EXAMPLES 1-6 interfacial agent and comparative example test results
TABLE 2 results of tests on modified asphalt cement concrete of EXAMPLES 1-6
| Test items | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 |
| Dynamic stability degree of times/mm | 4582 | 4350 | 4682 | 4456 | 4604 | 4421 |
| Marshall stability kN | 11.8 | 10.8 | 11.4 | 11.0 | 10.3 | 11.2 |
| Maximum deflection mm | 4.03 | 4.23 | 4.20 | 3.85 | 3.98 | 4.10 |
| Flow value 0.1mm | 32 | 33 | 32 | 34 | 35 | 33 |
| Porosity% | 4.2 | 4.1 | 4.1 | 4.2 | 4.3 | 4.2 |
| Residual stability% | 87.7 | 88.3 | 87.4 | 87.8 | 88.2 | 88.9 |
| The freeze-thaw splitting strength is more than% | 83.6 | 82.3 | 82.8 | 82.6 | 83.5 | 83.1 |
Claims (4)
1. A construction method of a modified asphalt cement concrete pavement comprises the following steps: the method comprises the following steps:
step one, bottom surface interface agent treatment: after the surface of the road bottom layer is cleaned, spraying an interface agent on the surface of the road bottom layer, standing for 10 minutes after uniform spraying, and spraying for the second time; the interface agent comprises the following components in parts by mass: 10-15 parts of acrylamide, 10-12 parts of acrylic resin, 5-10 parts of styrene-butadiene emulsion, 3-6 parts of polyethylene glycol, 1-3 parts of resorcinol, 150 parts of acetone and 180 parts of water,
step two, preparing modified asphalt: heating 1 part of matrix asphalt by weight to 170 ℃, adding 0.15-0.2 part of terpene resin, 0.05-0.1 part of polyacrylonitrile and 0.05 part of dimethyl methylphosphonate, and uniformly mixing and stirring; the temperature of the mixture is raised to 185 ℃, after shearing for 30 minutes at 900rpm, the temperature is reduced to 165 ℃, 0.1 to 0.15 part of polyoxyethylene nonyl phenyl ether is added, shearing is carried out for 20 minutes at 1200rpm, 0.05 to 0.1 part of graphite and 0.05 to 0.1 part of dolomite powder are added, high-speed shearing is carried out for 15 minutes at 1600rpm, the temperature is reduced to 40 to 50 ℃, modified asphalt is obtained for standby,
step three, pre-preparing a modified asphalt cement concrete mixture: adding 50-60 parts by weight of cement, 150 parts by weight of 100-one-stone-like material, 120 parts by weight of 100-one-sand-like material, 10-15 parts by weight of phosphogypsum, 10-20 parts by weight of diatomite and 20-30 parts by weight of water into a stirrer, stirring for 10 minutes, preheating a stirring material at the preheating temperature of 40-50 ℃, adding 50-80 parts by weight of the modified asphalt obtained in the step two, and stirring for 3-5 minutes to obtain a modified asphalt cement concrete mixture;
step four, paving the pavement: paving a modified asphalt cement concrete mixture on the road bottom layer treated by the interface agent, forming a modified asphalt cement concrete pavement after hardening, covering a wet straw mat on the surface of the modified asphalt cement concrete pavement for curing for 3-6 days.
2. A method of constructing a modified asphalt cement concrete pavement as claimed in claim 1, wherein the total amount of the two sprays of the interfacial agent is 0.3-0.6kg/m2, the first spray is 0.2-0.3kg/m2, and the second spray is 0.1-0.3kg/m 2.
3. A method for constructing a modified asphalt cement concrete pavement as claimed in claim 1, wherein the curing is carried out for 5 days in the fourth step.
4. A method for constructing a modified asphalt-cement concrete pavement as claimed in claim 1, wherein the interval between the treated bottom layer and the modified asphalt-cement concrete mixture in step four is not more than 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910157881.0A CN109881554B (en) | 2017-02-12 | 2017-02-12 | Construction method of modified asphalt cement concrete pavement |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910157881.0A CN109881554B (en) | 2017-02-12 | 2017-02-12 | Construction method of modified asphalt cement concrete pavement |
| CN201710074821.3A CN106832971B (en) | 2017-02-12 | 2017-02-12 | A kind of modified asphalt cement concrete pavement construction method |
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