Environment-friendly inorganic soil solidification additive

Abstract

The invention provides an environment-friendly inorganic soil solidification additive which comprises, by mass, 15-65% of sulfate, 15-65% of halide salt, 11-40% of phosphate, 5-30% of silicate, 0-25% of carbonate, 0-18% of basic oxide and 0-10% of lignosulfonate. The environment-friendly inorganic soil solidification additive is characterized in that all components in soil directly or indirectly undergo soil particle surface chemical modification and modification of substances among soil particles, and generation of colloidal gel materials and generation of various materials of crystal structures are promoted. As time goes, hardened skeletons such as ettringite needle-shaped crystals and apatite crystals appear gradually in solidified soil, soil solidification compressive strength, hydrophobicity, water permeability, stability of heavy metal and other harmful materials and other physical and chemical solidification effects are good, and the environment-friendly inorganic soil solidification additive can adapt to various climates, geographies and soil properties and is high in compatibility and obvious in stabilization and solidification effect on heavy metal and other harmful materials.

Description

technical field [0001] The invention belongs to the technical field of soil solidification materials, and in particular relates to a soil solidification admixture. Background technique [0002] The current soil curing admixtures include lime cement-based inorganic curing agents, slag-based dry powder soil curing agents, high-clustering ionic soil curing agents, organic enzyme protein soil curing agents, and organic-inorganic combination curing agents. Their material composition and functions The principles are different, and the effects vary greatly. [0003] The research and development of soil stabilizers in my country started later than abroad, and many soil stabilizer technologies were introduced into developed countries such as the United States and Japan. Although many soil stabilizers suitable for my country's national conditions have been developed independently or jointly, and some achievements have been made, At present, there are still some deficiencies in the res...

AI Technical Summary

Problems solved by technology

[0003] The research and development of soil stabilizers in my country started later than abroad, and many soil stabilizer technologies were introduced into developed countries such as the United States and Japan. Although many soil stabilizers suitable for my country's national conditions have been developed independently or jointly, and some achievements have been made, At present, there are still some deficiencies in the research and application of soil curing admixtures at home and abroad.

[0004] Existing soil curing agents generally have the problem of insufficient compatibility, and most of them have a better curing effect on clay. Due to the complex and changeable soil quality in nature, soil composition, structure, mineral composition and chemical composition often vary due to different soil-forming conditions. different, resulting in a great difference in the curing performance of the soil stabilizer, and the use of the soil stabilizer is not ideal

At present, the manufacturers or research and development institutions of various soil stabilization agents have not been able to develop soil stabilization admixtures that can clearly adapt to various complex actual situations.

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