Method for producing concrete by reclaiming and reusing PHC pipe pile residual slurry

Abstract

The invention discloses a process for preparing concrete by recycling and utilizing PHC pile tube surplus slurry, which comprises collecting the surplus slurry produced by the centrifugation of the PHC pile tube in a ware, then calculating the proportion of the surplus slurry X and calculating solidity Y of the surplus slurry according to the mathematical formula Y=AX-B, and according to the solidity value of original surplus slurry, adding water into the surplus slurry for mixing and diluting into a fixed density or solidity, adding retarder into the surplus slurry and controlling the coagulation time of the surplus slurry in 4-6 hours, then adding the surplus slurry and the row material of commodity concrete into the blender for producing the mixture fitting for the relative strength gradation, and conducting commodity concrete production to the mixture with manufacturing technique of commodity concrete. The process for preparing concrete by recycling and utilizing PHC pile tube surplus slurry enables the effective components of the surplus slurry to be reutilized, which not only reduces the environmental contamination and saves resource, but also substantially improves both the service performance and the early strength and later strength of the produced commodity concrete.

Description

technical field [0001] The invention relates to a process method for recovering the residual slurry of pipe piles, in particular to a method for producing concrete by utilizing the residual slurry of PHC pipe piles. Background technique [0002] At present, the output of PHC pipe piles (ultracentrifugal high-strength prestressed concrete pipe piles) is huge, and its production process is as follows: figure 1 shown. [0003] The raw materials of PHC pipe piles are cement, finely ground sand or mineral powder, sand, gravel, water and admixtures, and the concrete strength must be above C80. During the production process of PHC pipe piles, the concrete raw materials are rotated at high speed under the action of centrifugal force during centrifugal molding, and the coarse and fine particles are stratified, and a large amount of residual slurry water emerges from the inner wall of the pipe piles. The main component of solid particles in slurry water is gelling material. The mos...

AI Technical Summary

Problems solved by technology

Although this method is more practical in actual production, as the amount of residual slurry increases and the number of cycles increases, the strength of concrete and the appearance quality of pipe piles will fluctuate greatly; at the same time, the addition of residual slurry will also Change the particle distribution of cement and finely ground sand in concrete, thereby causing changes in the water-cement ratio; in addition, due to the accumulation of admixtures after multiple cycles, the proportion of residual slurry will increase, the solid content will increase rapidly, and the inner wall of the pipe pile will be formed not good

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