What are the reasons if water seepage occurs in the expansion joint?
In general, there are three specific reasons for water leakage from expansion joints.
First, the expansion joint application time period is too long, the expansion joint in the silicone ring selection is a new type of natural rubber, the general term in at least five years, if the application time exceeds five years, may cause leakage due to aging, the second is just one or two years of the application of water seepage, that is, the purchase of the expansion joint in the silicone ring is not natural rubber, recycled rubber as natural rubber applications, recycled rubber use period The use period of recycled rubber is much lower than that of natural rubber, so the water leakage will occur in one or two years after the application.
Second, is in the whole process of assembly, and not in accordance with the provisions of the installation of torsion bolts, usually in the assembly of expansion joints in the torsion bolts have done the sealing effect, if not torsion bolts, it will occur leakage, generally this condition only need to torsion bolts, water seepage will be improved.
Third, the welding point leakage, such a situation belongs to the quality of goods, generally in the process of welding the selection of symmetry by section, double welding welding. In the case of electric welding should be selected with a small electric flow electric welding welding, after each welding a part with a level meter card flange plan shape variable. Electric welding while pounding welding with a gas hammer, in order to reach the effectiveness of the removal of internal stress.
