Prefabricated self-heat-preservation shearing wall

Abstract

The invention discloses a prefabricated self-heat-preservation shearing wall which comprises a common concrete layer and a glass pumice concrete layer, wherein double-layer bidirectional reinforcing steel bars are arranged in the common concrete layer; single-layer bidirectional reinforcing steel bars are arranged in the glass pumice concrete layer; the double-layer bidirectional reinforcing steelbars and the single-layer bidirectional reinforcing steel bars are fixed through U-shaped ribs and tying bars to form a reinforcement cage; the glass pumice concrete layer comprises the following components in parts by weight: 400-650 parts of cement, 20-60 parts of coal ash, 120-200 parts of water, 1.5-3.5 parts of a water reduction agent, 0.8-3.2 parts of a fiber, 620-800 parts of medium sand of which the fineness modulus is 3.0-2.3, and 250-320 parts of continuously graded glass pumice of 5-30mm. The shearing wall is good in heat preservation effect, small in thickness, good in durabilityand free of cold bridge phenomenon.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a prefabricated self-insulating shear wall. Background technique [0002] Shear walls have the advantage of being able to bear vertical loads and horizontal loads, and can be both load-bearing and enclosure. Therefore, in the field of construction, we usually use shear wall structures for buildings that require higher overall strength. Most of the existing shear wall structure buildings are poured layer by layer on site, and then external insulation is applied. This method of construction is difficult, time-consuming and labor-intensive. With the rapid development of my country's construction industry and the improvement of awareness of green energy conservation and environmental protection , Assembled buildings came into being, and the shear walls are gradually adopting prefabricated shear walls. [0003] At present, there are generally two types of prefabricate...

AI Technical Summary

Problems solved by technology

Most of the existing shear wall structure buildings are poured layer by layer on site, and then external insulation is applied. This method of construction is difficult, time-consuming and labor-intensive. With the rapid development of my country's construction industry and the improvement of awareness of green energy conservation and environmental protection , prefabricated buildings emerged as the times require, and shear walls are gradually adopting prefabricated shear walls

[0003] At present, there are generally two types of prefabricated thermal insulation shear walls. One is the laminated shear wall, which uses truss bars to connect the inner and outer blades, and the middle insulation layer is filled later. This kind of shear wall not only has poor insulation effect 1. The construction is complicated, and the location of the truss bars will form a cold bridge, which will affect the overall performance of the wall panel; the second is the sandwich thermal insulation shear wall, that is, the fiber connector or steel connector is used to connect the inner and outer blades and the middle insulation layer, but The outer blades are only connected by connectors, which are easy to fall off and have poor durability

Moreover, the thickness of these two kinds of shear walls is more than 300mm, even as high as 400mm, which greatly occupies the building area.

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