Pre-mixed fluidized stabilized soil

Abstract

The invention relates to pre-mixed fluidized stabilized soil which is composed of water, soil, a composite strengthening material and cement according to a certain ratio, wherein the soil is natural soil or building waste recycled powder and a complex of the two; the composite strengthening material is composed of activated silica alumina and dispersing agent, a crystallization inducer, an excitant and a micro-expanding agent. The pre-mixed fluidized stabilized soil is prepared by the following steps: compounding the water, the soil, the composite strengthening material and the cement according to a certain ratio, uniformly stirring through stirring equipment, forming a mixture with fluidity, pouring through self-flowing or pumping, hardening, thereby forming the integral block with strength. The stabilized soil has a stabilizing effect, can regulate the strength, permeability and volume stability according to the ratio, and has the characteristics of being stable in quality, short inconstruction period, low in cost, simple in process and the like.

Description

technical field [0001] The invention relates to a civil construction material, in particular to a ready-mixed fluid solidified soil. Background technique [0002] At present, in the construction process of various projects in our country, we often encounter the treatment requirements of soil improvement and reinforcement, such as foundation treatment, roadbed reinforcement, etc., and often encounter specific parts such as mine goafs and trenches. The pouring and backfilling aspects of the construction work. In response to these construction needs, there are certain limitations in the design schemes and construction methods currently adopted by practitioners. For example, the deep mixing method is mostly used for foundation treatment. After adding cement and other curing agents into the in-situ soil, it is forced to stir to combine with the soil to improve the strength. However, this in-situ mixing is due to the lack of flow and operating space. , and mechanical equipment a...

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Problems solved by technology

For example, the deep mixing method is mostly used for foundation treatment. After adding cement and other curing agents into the in-situ soil, it is forced to stir to combine with the soil to improve the strength. However, this in-situ mixing is due to the lack of flow and operating space. , and mechanical equipment and other reasons, resulting in low strength after treatment, and it is more difficult to form piles for foundation pit support curtain walls; Lime soil backfilling, or using concrete and other materials to directly replace the soil body, the process is complicated, the cost is high, and a lot of waste is caused; in special areas such as mine goafs, foundation trenches, and fertilizer trenches, industrial waste such as mine tailings is used or concrete is used. Backfill directly, the construction surface is narrow and difficult to construct, and the project cost is high

[0003] On the other hand, in the foundation treatment of various projects such as ports, roads, mines, and urban construction, the excavated and replaced soil and muck can reach as high as one billion or billions of cubic meters per year. Most of the soil and dregs are not effectively recycled and utilized, but are regarded as waste piles and discarded, thus causing a lot of waste of land resources and soil resources, and easily causing secondary pollution to the surrounding environment

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