Self-compacting cement soil slurry for unbackfilled trench backfilling

Abstract

The invention relates to a self-compacting cement soil slurry for unbackfilled trench backfilling. The self-compacting cement soil slurry is characterized in that the basic formula is that the used materials in per stere comprise 100-400 kg of cement, 500-900 kg of local soil, 200-400 kg of stone chips or stone powder, 50-100 kg of fly ash, 1-3% of a quick-setting agent or early strength agent, and a right amount of water, the materials are uniformly stirring with a stirrer, and the stirred material is poured into a unbackfilled trench. According to the present invention, the vibrating pounding process is eliminated, the molding is achieved with the self-weight, the construction noise is reduced, the working environment of the workers and the living environment of the surrounding residents are improved, the problem that the vibrating pounding operation is not easily performed or cannot be performed is solved, the pouring speed is improved, the construction period is shortened, the labor intensity is reduced, the material cost is saved and the external conveying cost of the soil is reduced due to the local material taking, the industrial waste such as fly ash, stone chips and the like are utilized so as to provide the significant cost advantage compared to the concrete mortar, and the significant economic, social and environmental protection benefits are provided.

Description

technical field [0001] The invention belongs to a material for backfilling fertilizer tanks in building foundation construction, and in particular relates to a novel self-compacting cement-soil slurry. It can be used for backfilling of fertilizer tanks in building foundation pits, and can also be used for partial replacement of foundations or backfilling of cavities. Self-compacting refers to its high fluidity, non-segregation, uniformity and stability. It relies on its own flow during pouring and achieves compactness without vibration. It is especially used for parts that are difficult or even impossible to pour. Background technique [0002] At present, the backfilling of most construction engineering fertilizer tanks is designed to be backfilled with plain soil or 2:8 lime soil or 3:7 gray soil, but in actual construction, earth trucks or forklifts are used to directly pour the soil into the filling method, and some foundation pit fertilizer tanks are ten feet deep. A fe...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of self-compacting cement-soil slurry for backfilling the fertilizer tank, to solve various above-mentioned problems in the prior art due to the uncompacted backfilling of the fertilizer tank

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