Concrete prefabricated pile and production method thereof

Abstract

The invention discloses a concrete prefabricated pile, the concrete prefabricated pile is prepared by filling of concrete into a mold provided with steel reinforcement cage skeleton, die assembly, stretch-draw, centrifugal shaping, atmospheric pressure steam curing, demoulding and high pressure steam curing, the concrete includes the raw materials of a cementing material, fine aggregate, coarse aggregate, an additive and water, the content of the cementing material is 350-550 kg / m<3>, the cementing material comprises 55wt%-95wt% of cement and 5wt%-45wt% of an admixture, the admixture is silica powder; the fine aggregate is machine-made sand or a machine-made sand and natural sand mixture, the machine-made sand is prepared from mineral tailings, industrial waste slag and other stone raw materials by mechanical crushing, grading, sieving and dust removal processing; the invention also discloses a production method of the concrete prefabricated pile. The machine-made sand adopts various kinds of abandoned mineral resources, the production is not affected by the climate and season, not only the problem of environmental pollution is solved, the utilization rate of resources is improved, and the production cost of the concrete prefabricated pile is reduced.

Description

technical field [0001] The invention relates to a concrete prefabricated pile and a production method thereof. Background technique [0002] Concrete is generally made of cement, sand, stone and water in a certain proportion. Among them, sand and gravel concrete is the main material. With the rapid development of the construction industry, the amount of sand used in construction is increasing, and the quality requirements are increasing. The higher the natural sand resources are, the fewer and fewer natural sand resources will cause engineering quality problems, as well as the destruction of farmland and water resources. Therefore, the research and application of artificial sand is imperative. At present, the research on the application of machine-made sand in our country has become increasingly mature. Its application range has expanded from the construction industry to highways, railways, hydropower, metallurgy and other systems, from retaining engineering to bridges, tunn...

AI Technical Summary

Problems solved by technology

However, at present, artificial machine-made sand is rarely used in high-strength prestressed concrete prefabricated piles. The main reason is that the concrete produced by machine-made sand has high viscosity and poor fluidity, which will have a certain impact on construction and centrifugation, and eventually lead to product failure. Quality performance is not enough

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