A construction method of prefabricated exterior concrete joint structure of prefabricated exterior walls

Abstract

A seam construction of fabricated precast external walls and a construction method of a fair-faced concrete external wall are disclosed. Thermal insulation strips are fixedly connected between intermediate insulation boards at vertical seams in a sealed mode, vertical backing bars are plugged between external panels, vertical pressure-relief cavities are formed between the vertical backing bars and the thermal insulation strips, and vertical seam glue is smeared on the whole surfaces of the outer sides of the vertical backing bars; and horizontal backing bars are plugged between the external panels, horizontal pressure-relief cavities are formed between the horizontal backing bars and PE waterproof seal plates, horizontal seam glue is smeared on the whole surfaces of the outer sides of the horizontal backing bars, the vertical pressure-relief cavities and the horizontal pressure-relief cavities communicate with each other at cross seams, and drainage structures are arranged on the communicating positions. According to the seam construction of the fabricated precast external walls and the construction method of the fair-faced concrete external wall, seam water is drained successfully, and repair cost of precast component edges is lowered, so that the construction cost is lowered, the repair cost of the component edges is omitted while the glue is smeared, construction is convenient, and transverse flat and vertical straight of glue seams in appearance can be ensured; and meanwhile the construction effect of fair-faced concrete is achieved through gradual color difference adjusting and outer surface polishing of the components.

Description

technical field [0001] The invention relates to the field of assembled exterior walls, in particular to a construction method for a fair-faced concrete exterior wall with a joint structure of an assembled prefabricated exterior wall. Background technique [0002] Existing residential structures adopt more and more assembled integral shear wall structures. The exterior walls of residential buildings are all made of prefabricated concrete components. Generally, 20mm structural transverse joints and structural longitudinal joints will be formed between the external wall components after molding. However, the following problems are likely to be encountered during actual on-site construction: [0003] 1. The joint width of the prefabricated components on site varies. Due to the error in the construction stage of the structure, the installation accuracy of the precast concrete exterior wall on site is not enough, and the vertical and horizontal joints between the exterior wall co...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a construction method for the joint structure of fair-faced concrete on assembled prefabricated exterior walls, to solve the problem of uneven joint width, The technical problems of serious cross-staggered seams, inability to effectively drain water at the joints, and too large color difference of exterior wall components

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