Muck soil composite curing agent

Abstract

The composite sludge curing agent consists of Portland cement as cementing material; alkaline exciting component selected from lime, water glass and sodium hydroxide; expanding component of gypsum; and surfactant selected from triethanolamine and superplasticizer FDN. It has the advantages of high early strength, stable long-term strength, high water stability, high frost resistance, etc. It may be used in curing waste sludge into stable building material for road bed, composite foundation, etc.

Description

technical field [0001] The invention relates to a material for solidifying muddy soil, especially suitable for solidification treatment of muddy soil with high water content and high organic matter content. 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. [...

AI Technical Summary

Problems solved by technology

[0005] At present, cement, lime, fly ash or simple mixtures of these materials are mainly used as curing materials in China. Such traditional curing materials generally have low early strength, small strength adjustment range, and poor water stability.

Although there are reports of new soil stabilizers in China, most of the existing stabilizers cannot treat acidic muddy soils with high water content and high organic matter content.