A Study on the Physical Property by Construction Condition of Urethane Waterproofing Membrane

This study is for quality standard establishment of urethane waterproofing membrane method which is mostly applied to waterproofing method for underground parking lot and rooftop. The experiments were carried out on color differences, membrane thickness, tensile property by curing period of liquid urethane before placing protective concrete, and resistance of crack movement according to different substrate surface and reinforcement of non-woven fabric. As a result of experiments, it was found that color differences is increase, membrane thickness is thick, tensile property is low as concrete placing period is shorter. In the fatigue property, membrane thickness of 3 mm was not broken, but 1~2 mm was broken and in the case of the membrane reinforced with non-woven fabric was more stable comparatively non-reinforcement one.

우레탄 도막방수재의 시공조건에 따른 물성변화

비노출형 도막방수재 도포 후 누름콘크리트 타설 시기에 따른 도막방수재의 물리적 특성과 바탕면 조건, 도막두께 및 보강포 사용유무에 따른 내피로성을 검토하였는데, 누름콘크리트 타설 시기가 짧을수록 변색이 심하였고, 도막두께가 두꺼운 반면 인장성능이 낮았다. 내피로 성능은 3 mm의 도막두께에서는 파단되지 않았으나 1, 2 mm는 모두 파단 되었고 부직포로 보강한 경우의 내피로성능이 상대적으로 우수한 것으로 나타났다.