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Slurry material for semi-flexible road surface
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A semi-flexible pavement and slurry technology, applied in climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of poor filling, dry temperature shrinkage, slow strength growth, etc. The effect of good sex and high fluidity
Inactive Publication Date: 2015-06-10
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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[0002] At present, the grout materials used for semi-flexible pavement are mainly cement-based grout materials. The strength of traditional cement-based grout materials increases slowly, and there is a phenomenon of dry temperature shrinkage, which is likely to have a certain impact on the strength of the open-graded asphalt mixture matrix.
In the low temperature state, the slurry material will shrink to a certain extent before and after hardening, which will easily lead to incomplete filling, thus affecting the road performance of the semi-flexible pavement
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Embodiment 1
[0031] A kind of preparation method of polymer cement-based grout material for semi-flexible pavement is:
[0032] Step 1: Weigh the raw materials of the slurry material by weight percentage, P.O.42.5 cement 25.2%, anionic emulsified asphalt 10%, silica sand 36.599%, mineral powder 20.5%, heavy calciumcarbonate 7%, sulfamate 0.33%, water-soluble hydroxyl Ethyl celluloseether 0.011%, calcium chloride 0.36%.
[0033] Step 2: Add various materials in the order of emulsified asphalt, cement, silica sand, mineral powder, ground calcium carbonate, water reducing agent, water retaining agent, and early strength agent. Before adding water, other materials should be mixed for 1~2min, then add water and mix for 2~3min to make cement mortar. Tap water accounts for 31.5% of the mass percentage of the slurry material.
Embodiment 2
[0035] Step 1: Weigh the raw materials of the slurry material by weight percentage, P.O.42.5 cement 27%, anionic emulsified asphalt 8.918%, silica sand 36.4%, mineral powder 21%, heavy calcium carbonate 6%, sulfamate 0.33%, water-soluble hydroxyl Ethyl celluloseether 0.012%, calcium chloride 0.34%.
[0036] Step 2: Add various materials in the order of emulsified asphalt, cement, silica sand, mineral powder, ground calcium carbonate, water reducing agent, water retaining agent, early strength agent, and water. Before adding water, other materials should be mixed for 1~2min, then add water and mix for 2~3min to make cement mortar. Tap water accounts for 34.2% of the mass percentage of the slurry material.
Embodiment 3
[0038] Step 1: Weigh the raw materials of the slurry material by weight percentage, P.O.42.5 cement 26.5%, anionic emulsified asphalt 8.5%, silica sand 36.297%, mineral powder 22%, heavy calcium carbonate 6%, sulfamate 0.34%, water-soluble hydroxyl Ethyl celluloseether 0.013%, calcium chloride 0.35%.
[0039] Step 2: Add various materials in the order of emulsified asphalt, cement, silica sand, mineral powder, ground calcium carbonate, water reducing agent, water retaining agent, early strength agent, and water. Before adding water, other materials should be mixed for 1~2min, then add water and mix for 2~3min to make cement mortar. Tap water accounts for 32.6% of the mass percentage of the slurry material.
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Abstract
The invention relates to a slurry material for a semi-flexible road surface. The slurry material is prepared from the following raw materials in percentage by mass: 25-29% of P.O.42.5 cement, 8-10% of anionic emulsified asphalt, 35-38% of silica sand, 20-23% of mineral powder, 6-8% of ground calciumcarbonate, 0.32-0.34% of a water reducer, 0.011%-0.013% of a water-retaining agent and 0.33-036% of an early strength agent. A preparation method for the semi-flexible slurry material comprises the following steps: adding the materials according to the sequence of emulsified asphalt, cement, silica sand, mineral powder, ground calciumcarbonate, water reducer, water-retaining agent, early strength agent and water; mixing other materials for 1-2 minutes before adding water, adding water to mix for 2-3 minutes to prepare cementmortar, wherein tap water accounts for 30-35% (in percentage by mass) in terms of the polymer cement-based slurry material. The slurry material has the characteristics of relatively large mobility, early strength and no shrinkage, can be used as the slurry material for the semi-flexible road surface, and forms a semi-flexible asphalt mixture with an open-graded asphalt mixture base body.
Description
technical field [0001] The invention relates to a slurry material for semi-flexible road surfaces, in particular to a slurry material for semi-flexible anti-rutting road surfaces used in parking lots and urban road intersections. Background technique [0002] At present, the slurry materials used for semi-flexible pavement are mainly cement-based slurry materials. The strength of traditional cement-based slurry materials increases slowly, and there is a phenomenon of dry temperature shrinkage, which is likely to have a certain impact on the strength of the open-graded asphalt mixture matrix. In the low temperature state, the slurry material will shrink to a certain extent before and after hardening, which will easily lead to incomplete filling and affect the pavement performance of the semi-flexible pavement. Contents of the invention [0003] The purpose of the present invention is to develop a semi-flexible pavement slurry material with excellent performances such as hig...
Claims
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Application Information
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