Preparation method of polymer foundation soil consolidation agent

Abstract

The invention discloses a preparation method of a polymer foundation soil consolidation agent. The preparation method comprises following steps: a modified triisopropanolamine solution is prepared; methacrylic acid and N-isopropyl acrylamide are mixed at room temperature at a ratio of 1:2-3; cement, steel slag, a water reducer, and an anti-foaming agent are introduced into a homogenizer reaction vessel containing the modified triisopropanolamine solution in a manner that solid material first and liquid material second; the mixture of methacrylic acid and N-isopropyl acrylamide is added, and uniform stirring is carried out in the homogenizer reaction vessel so as to obtain the polymer foundation soil consolidation agent. The polymer foundation soil consolidation agent is capable of solidifying mud, mud powder soli, soft soil, muck, and the like with a water content ranging from 10 to 70%, and especially can be used for solidifying soil with an organic matter content lower than 30%, so that coagulable solid application range is widened, consolidated product compressive modulus of resilience and unconfined compressive strength are increased obviously, and it is ensured that without adding of broken stone, the consolidated is capable of providing higher foundation carrying capacity for upper engineering construction.

Description

technical field [0001] The invention belongs to the field of foundation treatment of roads, airports, and construction projects. Specifically, it is a polymer foundation soil consolidation agent and its preparation method, which expands the scope of application of consolidated soil and can ensure the performance of other main road performances of the material. Under the condition that the index does not decrease, the compressive rebound modulus and unconfined compressive strength of the cured product are significantly enhanced, and the foundation bearing capacity is significantly improved without the addition of gravel, and the drying and temperature shrinkage of the soil in the roadbed is reduced in the later stage cracking. Background technique [0002] With the needs of urban development, there are more and more constructions around the city. Before carrying out roads, airports and construction projects, it is necessary to carry out foundation treatment and even soil repl...

AI Technical Summary

Problems solved by technology

At present, hydraulic materials such as cement and fly ash are commonly used to consolidate these soils, or to modify these hydraulic materials by adding some stimulating materials, most of which are inorganic stimulating materials, which usually affect the organic matter content in the soil. There are strict requirements, usually less than 10% can be successfully consolidated; in addition, the current consolidation method increases the strength of the soil by adding crushed stones. As the environmental protection department has become more stringent on the mining of mountain rocks, the price of crushed stones has doubled. Therefore, this method is not environmentally friendly and economical enough

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