Development of Hybrid Type Waterproofing Method Using a Combination of Polyurethane Resin and Aqueous Emulsion

Abstract

In the case of water leakage from the defective point of the concrete occured, injecting polyurethane resin water proofing material into the leak point often used for stopping water leakage of underground structures. However, the resin used this method has the drawback of cure performance on a dry surface, the dimension stability and flexibility. In order to compensate for these drawbacks, we developed new injected waterproofing method using a hybrid-type water proofing material obtained by mixing the material of 2 members of a special water-based emulsion with enhanced physical properties such as material strength and hydrophilic polyurethane resin. By a variety of physical tests and variations follow-up test, we tried the performance evaluation of the development method.