Forming method of self-compacting concrete for pccp tube core

Abstract

The invention discloses a self-compacting concrete moulding method for PCCP (prestressed concrete cylinder pipe) cores, and the method is implemented by designing, preparing and producing high-flowing self-compacting concrete applicable for PCCP core moulding, and pouring the self-compacting concrete at a uniform velocity in a unified material allocation mode. By using the method disclosed by theinvention, both the situation that the finished pipe core products meet the requirements for national standard quality can be ensured, and the vibration-free moulding can be realized, therefore, the vibration noise caused by using a plastic concrete moulding process is effectively avoided, no power consumption is produced for vibration, and no vibrator is arranged for generating a fatigue damage on a steel mould; and because a material homogenizer is adopted, the unified allocation of the self-compacting concrete can be realized, thereby reducing the occurrence of phenomenon that the construction quality of a vibration-free self-compacting concrete PCCP core is substandard because of high placing height and wide blanking width; meanwhile, the method can be used for night work. By using the method disclosed by the invention, the production process is simplified, the production efficiency is improved, the production cost is lowered, and excellent economic and social benefits can be produced.

Description

technical field [0001] The invention relates to a forming method of a prestressed steel cylinder concrete pipe (PCCP) core, in particular to a forming method of a PCCP core self-compacting concrete. Background technique [0002] The core concrete forming of PCCP pipe is divided into two main production process types according to its model characteristics: one is horizontal centrifugal forming process, PCCPL type prestressed steel cylinder concrete pipe is produced by this process; the other is vertical pouring forming Process, PCCPE prestressed steel cylinder concrete pipe is produced by this process. The principle of the horizontal centrifugal molding process is to use plastic concrete, and use the centrifugal force generated by the high-speed rotation of the pipe mold to make the concrete compact; The frequency vibrator compacts the concrete. The concrete compaction principle of the above two concrete tube core molding processes is to squeeze each component inside the co...

AI Technical Summary

Problems solved by technology

[0006] Due to the structural characteristics of high pouring height (height greater than or equal to 5m) and wide blanking width (the width is the circumference of the tube) when PCCP pipe core concrete is formed, the existing blanking tools and blanking methods (concrete along the tube Uniform cutting around the mold circumference) It is difficult to ensure that the quality of the finished tube core after self-compacting concrete pouring meets the standard requirements

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