Inadequate cement mortar plastering thick steel mesh outer insulation board insulation structural design exist: such external insulation commonly used polystyrene boards with steel mesh as the main insulation materials, steel mesh penetrate into Why not penetrate wood decking in philippines polystyrene board two types of polystyrene board. Construction of steel mesh penetrate through military benzene plate steel mesh polystyrene board overall disposable pre-cast concrete pouring is fixed on the base of the wall, do not penetrate the way mechanical anchoring polystyrene board is fixed on the wall at the grassroots level, surface layers are made of ordinary mortar 20mm ~ 30mm leveling.

As such the system uses thick cement plaster mortar practice, cracking phenomenon is relatively common for the following reasons: ordinary cement mortar itself is easy to produce all kinds of shrinkage, and there is the strength of the growth cycle is short, the long period of conflict volume shrinkage under constraints When the tensile stress exceeds the volume contraction of the tensile strength of cement mortar, there will be cracks. The main structure is under the protection of the insulation layer less Durable Composite Fence Sale affected by temperature deformation, while 20 ~ 30mm in outside of the thermal resistance of screeds great polystyrene board, Heinze affected by ambient temperature and have a greater deformation. And have a greater relative deformation of polystyrene panels on both sides of the cement material influence by environmental temperature difference, causing cracking. In addition, as insulation board flatness is difficult to control the thickness of the plaster will cause leveling uneven, resulting in local uneven shrinkage and thermal stress causing cracks.

Reinforcement unreasonable cause cracks: Steel wire rack in the position corresponding to one side of the cement mortar reinforced manner, and close insulation layer. Positive and negative air pressure, thermal expansion and contraction, shrinkage wet up and lands role in both two-way or multi-directional. Reinforcement of the ways of dispersion near the external walls of stress is very limited, would not achieve the proper Eco Friendly Polymer Decking Wholesale,Outdoor Floor,Composite Wall Panel,Composite Outdoor Furniture - Shanghai Seven Trust cracking effect. Four angle mesh reinforcement to resist stress and dispersed with steel wire mesh in the same direction with good results, but in a diagonal direction of the mesh without gluten, so the resistance and dispersion mesh diagonal left with limited stress. So easy to produce cracks along the corners diagonally network, in addition, the four angles of the cross at the net cement mortar bond difficult to fully and completely, cement mortar and steel mesh can not become a common force.