Soft soil foundation curing agent and construction method for curing soft soil foundation

Abstract

The invention discloses a soft soil foundation curing agent and a construction method for curing a soft soil foundation. The curing agent comprises the following raw materials in percentage by mass: 40.1%-60.0% of carbonated steel slag, 4.2%-5.8% of slag powder and 34.2%-54.1% of cement. When the sum of the mass of the soft soil, the mass of the water and the mass of the soft soil curing agent is 100%, the doping ratio of the soft soil curing agent is 12.0-20.0%. The preparation method comprises the following steps: (1) preparation of soft soil foundation curing agent slurry: weighing carbonated steel slag, slag powder and cement according to a ratio, putting into a sample preparation barrel, fully mixing, adding water according to a water-cement ratio of 0.45-0.55, and stirring to prepare the soft soil foundation curing agent slurry. The carbonated steel slag and the slag powder are used for replacing a cement curing agent, the soft soil curing agent for fixing the soft soil foundation is prepared, the soft soil foundation is cured, and the strength of a cured pile body meets the design requirement. The problem of utilization of metallurgical industry solid waste is solved, and the problem of treatment of soft soil foundations in urban development and construction is also solved.

Description

technical field [0001] The invention relates to a solidifying agent for soft ground with industrial solid waste as the main raw material and a use method thereof, belonging to the technical field of solidifying soft ground. Background technique [0002] Soft soil foundation mainly refers to the composite foundation composed of free mud, free muddy soil, miscellaneous filling soil or highly compressible soil layers mixed with peat, shells, biological debris, etc. This kind of foundation has a large natural water content and low bearing capacity. Sliding or consolidation settlement is easy to occur under load, so in order to ensure the normal use of the building, it is necessary to improve the properties of the foundation soil and improve the mechanical properties of the foundation soil. [0003] There are many treatment methods for soft soil subgrade, and the classifications are also different, including: sand cushion method, dynamic compaction method, replacement and filling...

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Problems solved by technology

[0006] The purpose of the present invention is to aim at the above-mentioned defects existing in the prior art, and provide a kind of solid waste of steel plant as main raw material, cement consumption is less, the soft soil foundation curing agent of low cost, to solve the problem of existing soft soil foundation treatment The use of a large amount of cement in the industry cannot meet the needs of the society and the waste generated by the steel plant is difficult to deal with

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