Remained slurry-free and non-autoclaved prestressed concrete pipe pile

Abstract

The invention relates to a remained slurry-free and non-autoclaved prestressed concrete pipe pile, comprising the following raw components in parts by weight: 300-350 parts of cement, 60-80 parts of mineral powder, 600-700 parts of fine aggregate, 1200-1400 parts of coarse aggregate, 80-100 parts of running water, 35-40 parts of mineral additive, and 8-12 parts of water reducer. After a lot of experiments and contrastive analysis of the remained slurry-free and non-autoclaved prestressed concrete pipe pile, remained slurry-free centrifugation is achieved and one-time demoulding strength achieves C80 by adding a nano-sized mineral additive, matching with complexed high-performance water-reducer, and adjusting the centrifuging and steaming steps of the existing pipe pile. The procedures of removing the remained slurry and steaming are removed; the environmental pollution and energy consumption of enterprises are greatly reduced; the endurance quality of concrete is greatly improved.

Description

technical field [0001] The invention belongs to the field of concrete pipe piles, in particular to an autoclaved prestressed concrete pipe pile without residual slurry. Background technique [0002] The existing production process of concrete pipe piles is divided into reinforcement cutting, cage weaving, assembly, concrete pouring, tensioning, centrifugation, steam curing and autoclaving. Two links have always been a headache for pipe pile enterprises: one is the large amount of residual pulp produced by centrifugation, which not only contains a lot of water, but also contains a lot of cement and admixture components, which directly affects the quality of the pipe pile after forming. The recovery and reuse of residual stock is less cost-effective, and a large amount of energy consumption will be generated in the process of recovery and reuse; the second is a large amount of energy consumption generated by autoclaving, and a large pressure vessel must be used, there is a ser...

AI Technical Summary

Problems solved by technology

Two links have always been a headache for pipe pile enterprises: one is the large amount of residual slurry produced by centrifugation, which not only contains a large amount of water, but also contains a lot of cement and admixture components, which directly affects the quality of the pipe pile after forming. The recovery and reuse of residual pulp is less cost-effective, and a large amount of energy consumption will be generated in the process of recovery and reuse; the second is a large amount of energy consumption generated by autoclaving, and a large pressure vessel must be used, there is a serious problem production safety hazard

[0005] After comparison, the above-mentioned patent documents are quite different from the present application in terms of the raw materials used in the pipe pile and the centrifugal process.

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