Wet junction forming method

Abstract

The invention discloses a wet joint face forming method. The wet joint face forming method comprises the following steps: uniformly coating a first retarder on a horizontal joint face after completing face finishing, putting aside the horizontal joint face for 3-5 hours, washing the horizontal joint face by use of first high-pressure water, and washing the horizontal joint face by use of second high-pressure water, thereby obtaining a horizontal wet joint face; and uniformly coating a second retarder on a template surface used for covering a vertical joint face before casting, putting aside the vertical joint face for 12-24 hours after casting, dismounting the template covering the vertical joint face, washing the vertical joint face by use of first high-pressure water, washing the vertical joint face by use of second high-pressure water, thereby obtaining a vertical wet joint face, wherein water pressure of the first high-pressure water is lower than that of the second high-pressure water, and retarding effect time of the first retarder is shorter than that of the second retarder. The wet joint face forming method is small in labor intensity, is convenient to construct, and is high in construction efficiency, and the obtained wet joint face is high in strength, and is attractive in appearance.

Description

technical field [0001] The invention relates to the forming operation of the concrete wet joint joint surface of concrete engineering, in particular to a novel and efficient concrete wet joint joint surface forming method. Background technique [0002] The secondary pouring or layered pouring of concrete is often involved in the construction process of the project. The original surface laitance needs to be removed on the joint surface of the concrete, so that more than 1 / 3 of the original concrete aggregate is exposed to ensure the bonding between the layered concrete. force. [0003] The traditional methods of forming wet joints include artificial chiseling and chisel chiseling. Artificial chiseling is to manually chisel off the concrete surface with a chisel after the concrete strength reaches 2.5MPa to form a rough surface and form a wet joint. Pneumatic pick chiseling is to use air compressor pneumatic pneumatic pick to chisel the concrete surface into grooves and roug...

AI Technical Summary

Problems solved by technology

[0004] 1. Manual chiseling is labor-intensive, labor-intensive, low chiseling efficiency, high labor costs, and the molding quality of concrete wet joints is greatly affected by human factors, and the molding quality is uneven and fluctuates greatly

[0005] 2. The chiseling efficiency of the pneumatic pick is low, and if the chiseling strength is not well grasped, it is easy to disturb the deep concrete or damage the internal structure and surface corners of the concrete, resulting in quality hazards and appearance defects

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