The sandwich insulation wall with masonry structure is most obvious because the wall is too thick to affect the usable area, and the investment is the least economical. At the same time, due to the large thermal bridge, there are additional heat losses around the window and the heat loss of the concrete cornice slab, and there are a large number of thermal bridges at the damaged holes of the benzene slab by the tie bars with hooks, and the insulation effect is not good. In particular, the seismic performance of outer leaf masonry is poor and unsafe, and it is not suitable for high-rise buildings and areas with high seismic intensity to adopt this insulation method. At present, stainless steel anchors are basically used for the masonry of the outer leaf, and the moisture content in the insulation layer is calculated to exceed 15%, so there must be condensed water and ice on the anchors in winter. When the anchors are corroded, the outer leaf body is not safe, there is a danger of collapse! According to the "Code for Design of Masonry Structures", the thickness of the sandwich benzene board shall not be greater than 100mm, so the thickness of the thermal insulation composite wall cannot meet the heat transfer coefficient requirement of less than 0.5w/(m2·K).
