In general, water proofing, both in concrete structures and in the soil is carried out in two ways: in one way, one of a variety of coatings is accomplished on the internal and external surfaces of the structure or masses Soil, etc., which is generally referred as lining. In this way, only the surface or shell of the structure or soil is armed against water penetration, and there is no action in the core of the structure or soil. In the second method, various types of chemicals and cements are injected by pressure into the core of the structure or soil and sewage mastics, etc. is implemented. In this case the total volume of the structure or soil are armed against the penetration of water. Each of the above mentioned methods are applicable in a particular position and each one includes different types.
One of the best methods for water proofing the structures is using the injection method, so that in the internal and inaccessible gaps and holes in nodes and intersections, or places with a high density of rebar, or under the armature network due to concrete drops and separation from the network, various types of polyurethane materials are injected. Also, the water penetration problems in the structure, which are seen as liquid leakage in the reservoirs or cracking due to rot and inflation of the reinforcement, can be corrected by this method.
One of the most important stages of water proofing is to investigate and identify the site of leakage. In the investigation of leaked concrete surfaces condition, in addition to leakage points, the points that had been leaked in the past should also be identified as they may also be discharged in the future. Most of these points are considered in places where the concrete is not well-executed or sliced, as well as the seam of concrete cutting.Back To Home Page