Fluidized roadbed soil and construction method

Abstract

The invention discloses fluidized roadbed soil and a construction method. The fluidized roadbed soil comprises the following raw materials, in parts by weight: 90-110 parts of residue soil, 10-30 parts of cement, 50-80 parts of water, 0-20 parts of fine gravel, 0-5 parts of a foaming agent, 0-10 parts of soluble foam particles, 0-5 parts of a retarder, 0-15 parts of bentonite, 0-10 parts of straw fibers, 0-5 parts of nano silicon oxide, 0-2 parts of basalt fibers, 0-5 parts of nano calcium carbonate, 0-5 parts of nano magnesium oxide, 5-10 parts of perovskite, and 2-5 parts of ammonium chloride. The fluidized roadbed soil is obtained by the steps of mixing the above raw materials, performing sieving, performing mud scattering and the like. The fluidized roadbed soil provided by the invention has the following advantages: the fluidized roadbed soil has a wide application range: the fluidized roadbed soil is in a flowing state and has no special requirements for formation flatness; the fluidized roadbed soil has good water permeability: the fluidized roadbed soil has good water permeability, the water permeability coefficient can reach 12 m / s<-4>, and a water body can be dispersed more quickly; the fluidized roadbed soil has high strength: the unconfined compressive strength under fluidity of 185 reaches 362 kPa; and the fluidized roadbed soil is convenient for construction and has high economic benefits.

Description

technical field [0001] The invention relates to a construction method of geotechnical engineering materials, in particular to a fluidized roadbed soil and a construction method. Background technique [0002] In recent years, with the development of sponge city construction, more and more cities have begun to deal with the original impermeable pavement and roadbed. During the roadbed treatment process, a large amount of discarded slag will be produced, and the transportation and burial of these slags will have a significant impact on the environment. The subgrade fill in the sponge city needs to meet both the strength requirements under traffic loads and the water permeability requirements. [0003] The Chinese invention patent with the announcement number "CN201710722158" discloses "a construction method for high elastic modulus water-soluble styrene butadiene polymer permeable mortar for sponge city roads", which provides a high elastic modulus water-soluble mortar for spo...

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Problems solved by technology

[0003] The Chinese invention patent with the announcement number "CN201710722158" discloses "a construction method for high elastic modulus water-soluble styrene butadiene polymer permeable mortar for sponge city roads", which provides a high elastic modulus water-soluble mortar for sponge city roads. The construction method of permeable styrene-butadiene polymer permeable mortar, but it has the following disadvantages: (1) low construction efficiency: the fluidity of this permeable mortar is relatively poor, and manual vibration is required in the construction process, which is not convenient enough, and for The filling effect of some corner areas is poor, and voids are prone to appear; (2) Low environmental protection benefits: Although the mortar uses construction waste, the preparation process of construction waste will still produce certain environmental pollution

[0004] The Chinese invention patent with the announcement number "CN201710186262" discloses "a permeable pavement and a basic pavement using the brick", which provides a permeable pavement and a basic pavement using the brick, but it has the following deficiencies: (1) operation Complicated: the brick needs to be paved manually, and the construction operation is not convenient enough, especially when used on a large-scale road surface; (2) The environmental protection advantage is not obvious: some waste materials are not added to the raw materials, and the environmental protection advantage is not obvious; (3) Poor scope of application: the bottom layer of the brick needs to be treated, and it cannot be well applied to uneven road surfaces; (4) the water permeability is not ideal

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