Peat soil solidifying agent based on replacement function and use method of peat soil solidifying agent

Abstract

The invention discloses a peat soil solidifying agent based on a replacement function and a use method of the peat soil solidifying agent, and belongs to the technical field of soil solidifying. The solidifying agent is prepared from raw materials: machine-made sand with a replacement rate being 40%-60% calculated according to the mass percentage of the water-free soil particles in natural peat soil, 15%-45% of cement calculated according to the mass of the peat soil after the replacement, 10% of phosphogypsum, 3% of sodium sulfate, 1.5% of sodium chloride and 100% of water which are calculated according to the mass of cement. The use method of the solidifying agent includes the steps that after the peat soil is replaced with the machine-made sand, the peat soil is solidified by adding other materials. According to the peat soil solidifying agent based on the replacement function and the use method of the peat soil solidifying agent, the mechanical properties of the peat soil can be significantly improved; the amount of cement required for solidifying the peat soil is reduced, a new way for the solidification of the peat soil with sand with environment-friendly benefits is createdthrough the utilization of the machine-made sand, and the environmental pollution caused by stacking of the peat soil is reduced due to the utilization of phosphogypsum; and the solidifying agent rawmaterials are easy to obtain, the use method is simple, the cost is low and certain environment-friendly and economic benefits are achieved.

Description

technical field

[0001] The invention relates to the field of civil engineering and building materials, in particular to the technical field of soil curing agents, in particular to a replacement-based peat soil curing agent and its application method. Background technique

[0002] Peat soil is a typical ultra-soft soil, and it also has the characteristic of high organic matter content which is different from ordinary soft soil. The structure of peat soil is loose, and has extremely high natural moisture content, void ratio and compressibility. At the same time, it has a small specific gravity, high thixotropic sensitivity, and its bearing capacity is lower than that of ordinary weak structural soil. It is defined in engineering as being "Problem soil" that causes severe foundation settlement and foundation instability. In the early stage of engineering construction, due to the many technical difficulties involved in the development of peat soil areas, and the operation and l...