Novel mucky soil composite curing agent

Abstract

The invention discloses a novel mucky soil composite curing agent, which is formed by mixing cement as gelatinous materials and alkaline stimulation component, expansion component and surface active agent as ingredients. The alkaline stimulation component adopts sodium silicate and sodium hydroxide; the expansion component adopts gypsum, and the surface active agent adopts triethanolamine and high efficiency slushing agent. The novel mucky soil composite curing agent is characterized by also comprising an anti-crack component which adopts glass fiber. The mass percentage of the components are as followed:12-16 percent of cement, 2-5 percent of gypsum, 4-8 percent of sodium silicate, 0.4-0.8 percent of sodium hydroxide, 0.02-0.1 percent of triethanolamine, 1.5-2.5 percent of high efficiency slushing agent, and 0.4-2 percent of glass fiber. The novel mucky soil composite curing agent has the advantages of good tensile strength and fracture resistance, high shearing strength, stable long-term strength, good water stability and the like, and can be used for generating a composite foundation on a mucky soil field through a deep mixing method.

Description

technical field [0001] The invention relates to a material for solidifying muddy soil, in particular to a novel composite curing agent for muddy soil. Background technique [0002] Stabilized soil is the addition of admixtures to the soil, which can undergo a series of physical and chemical reactions with the soil to solidify the soil, improve the physical and mechanical properties of the soil, reduce the water sensitivity of the soil and improve the water stability of the soil. It has a wide range of applications and superior performance, and is suitable for the reinforcement of various foundation soils; the strength of the consolidated soil can be adjusted to meet different engineering requirements; the early strength of the reinforced soil is high, which is conducive to speeding up the construction progress; local materials are used to reduce the amount of sand and gravel used , Reduce environmental damage, etc. [0003] Silt and muddy soil is a kind of structural soil d...

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Problems solved by technology

[0004] The Chinese patent name is silty soil composite curing agent (application number 200710070010.2) which discloses a gel material made of ordinary portland cement, mixed with alkaline stimulating components, swelling components and surfactants Lime, water glass, and sodium hydroxide are selected as the alkaline excitation component; gypsum is selected as the expansion component; triethanolamine and naphthalene-based water reducer (FDN) are selected as the surfactant, which has the advantages of low price, high early strength, stable late strength, It has the advantages of good water stability and frost resistance, but the tensile strength of the soil cured by this composite curing agent is low, the shear strength is not significantly improved, the flexural strength is low, and the damage is still brittle, and the ductility is poor.

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