The problem of using quality hot-dip galvanized welded wire mesh in building crack prevention
The main point of ensuring the quality of the external wall insulation construction of the house is to avoid the deformation of the outer wall insulation layer, which leads to cracks, water seepage and aging. Therefore, the connection between the insulation layer and the building base layer is the top priority. The current construction of the external wall insulation construction of the house presents the following problems:
1.1EPS board product function problem
The swelled EPS board is an economical, practical and functional building insulation material with high tensile and compressive strength and simple processing for other shapes. When the foreign trade's surface layer is cracked, it is generally due to the shortage of construction flatness of the outer wall surface, which causes the crack-resistant mortar to undergo temperature elastic stress due to the problem of the thickness of the insulation layer. The EPS board presents a local crack in the horizontal and vertical representations. When the outer wall is thicker, the crack will appear because the thickness is too thick, which will cause the flexibility of the glue to decrease, and the EPS plate will show cracks when shortened. In the construction process of EPS board, the quality of the product does not reach the relevant standard requirements, and it will also cause cracks in the surface layer. This situation not only affects the construction of the customs, but also seriously damages the protective layer and shortens the service life of the house construction.
The Hot-Dipped Galvanized Welded Wire Mesh Panels has a certain insulation effect in the house exterior wall system. The quality level and durability of hot-Dipped Galvanized Welded Wire Mesh Panels are directly related to its function. If the gap between the hot-Dipped Galvanized Welded Wire Mesh Panels and the polystyrene board is too small in the construction of the external wall insulation of the house, or if the Galvanised Welded Wire Mesh is outside the plaster of the surface layer, the Galvanised Welded Wire Mesh will be hindered. The effect of wall insulation, which in turn leads to limited impact strength of the external wall, is simple to present cracks at the joint of the hot-dip galvanized welded wire mesh.
Because the construction of the external wall insulation construction details is not paid enough attention during the construction design and construction process, it will lead to construction problems in some nodes and special parts, such as the simple appearance of the thermal bridge in the balcony floor beam, air conditioner board and other parts. The wall with water in the house is not close to the wall of the outer wall, and the outer wall insulation layer is hollowed out and falls off due to freezing and thawing.