Lightweight fireproof energy-saving prefabricated exterior-wall hanging plate and construction method thereof

Abstract

The invention discloses a lightweight fireproof energy-saving prefabricated exterior-wall hanging plate and a construction method thereof. The exterior-wall hanging plate comprises at least one wall plate, each wall plate comprises an inner-layer reinforced concrete plate, an outer-layer reinforced concrete plate, a thermal-insulation material layer and a heat-insulation connection bar; the thermal-insulation material layer is arranged between the inner-layer reinforced concrete plate and the outer-layer reinforced concrete plate; the thermal-insulation material layer comprises an organic thermal-insulation part and an inorganic thermal-insulation part surrounding the periphery of the organic thermal-insulation part, and the organic thermal-insulation part occupies most area of the thermal-insulation material layer; and the heat-insulation connection bar penetrates the thermal-insulation material layer, two ends of the heat-insulation connection bar are respectively fixedly connected with steel bars in the inner-layer reinforced concrete plate and the outer-layer reinforced concrete plate, and the heat-insulation connection bar is a steel bar with the exterior coated by engineering plastic. The disclosed lightweight fireproof energy-saving prefabricated exterior-wall hanging plate has the advantages of being lightweight and good in thermal-insulation performance, and is capable of avoiding potential safety hazard caused by flame and high-temperature flue gas entering the interior of the exterior-wall hanging plate via plate seams when a fire hazard happens.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a lightweight, fire-resistant and energy-saving prefabricated external wall hanging board. Background technique [0002] With the rapid development of modern high-rise buildings, the frequency and fire risk of building fires are increasing, and the potential hazards of building fires are becoming more and more serious. Research on building fires at home and abroad shows that there are two main reasons for fires: the fire resistance of the insulation material layer itself and the defects in the fire resistance of the exterior system. [0003] In recent years, prefabricated exterior wall hanging panels have been gradually applied in China. Prefabricated exterior wall hanging panels are generally composed of inner and outer layers of reinforced concrete slabs, insulation material layers and steel wire grids. Since the thermal insulation material layer of the ...

AI Technical Summary

Problems solved by technology

However, when a fire breaks out in a building, the splicing gap between the two external wall hanging panels, that is, the panel seam, is burned by flames and high-temperature smoke for a long time, and the sealing material in the panel seams is prone to failure, causing flames and high-temperature smoke to flow from the panels. The seam enters the interior of the external wall hanging panel, which has many adverse effects on the fire resistance of the external wall hanging panel: 1) The steel wire grid is directly affected by the flame and high temperature, and the mechanical properties are significantly degraded

2) The entry of flames and high-temperature flue gas may cause insulation materials, especially organic insulation materials, to be directly burned by fire, and cause the fire to spread rapidly to adjacent rooms and floors

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