Shear wall screw hole sealing agent and sealing method

Abstract

The invention relates to the technical field of wall hole blocking, and discloses a shear wall screw hole blocking agent, which mainly comprises, by weight, 100 parts of polymer crack resistant mortar, 50 parts of medium sand, 30 parts of 108 glue, 12 parts of a JS waterproof coating, 7 parts of white cement, and 1 part of an expanding agent. The 108 glue is used as a main mixing agent, which replaces water to reduce cracks caused by moisture loss to the maximum extent, and the bonding strength is improved; the expanding agent is reasonably used to compensate the micro-cracks caused by the condensation and hardening shrinkage of the material and improve the waterproof and anti-cracking performance of the mortar; the JS waterproof coating is added, so that the material has self-waterproof effect; the white cement is added, the stability of the mixed material is improved while the strength of the material is not reduced, and meanwhile, the molding color of the material and the concrete wall surface is effectively improved. Meanwhile, by adopting a specific mixing ratio, the blocking operation is performed in a dry environment, the steps of wetting and curing before and after the construction are omitted, and the screw hole blocking can be ensured to be free from cracks and water leakage.

Description

technical field [0001] The invention relates to the technical field of wall hole sealing, in particular to a sealing agent and a sealing method for a screw hole in a shear wall. Background technique [0002] In the construction of high-rise buildings, many screw holes will be left after the loose shear wall formwork is removed, and the sealing quality of the screw holes in the shear wall plays a decisive role in the waterproofing of the outer wall, the division of functional spaces, and the quality control of decoration construction. At present, in the construction of screw hole sealing in shear walls, the following two construction techniques are usually used: [0003] (1) Clean up oil, floating dust and other garbage → sprinkle water and moisten → seal and compact the holes with micro-expansion waterproof mortar on the outside of the shear wall → foaming agent in the hole → seal and compact the micro-expansion waterproof mortar inside the shear wall → maintenance → outside...

AI Technical Summary

Problems solved by technology

[0006] This construction process manually fills the screw hole with micro-expansion waterproof mortar, and the construction efficiency is low. 5-20mm of micro-expansion waterproof mortar is sealed on both sides of the screw hole in the shear wall. After construction, the screw hole is sealed at both ends. As a result of the void in the middle, artificial omission of the construction process, the sealing quality of the screw hole in the shear wall cannot be guaranteed, the phenomenon of crack formation is common, and water seepage and non-leakage incidents often occur in the screw hole of the outer wall

[0007] In addition, in the above two processes, the process of sprinkling and wetting is required before or after construction to prevent cracks and water seepage as much as possible. The operation process is cumbersome and the construction efficiency is low.

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