차수용 박층 멤브레인의 장기 성능 변화에 관한 실험 연구
Experimental Study on Long-term Characteristics of Sprayable Waterproofing Membrane
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초록
차수용 박층 멤브레인은 토목분야에 최근 소개된 재료로서 1상 또는 2상의 분말 또는 액상의 재료를 대상이 되는 면에 펌프와노즐을 사용하여 뿜어 붙이는 재료이다. 재료적인 특성은 연구를 통해 특성이 점차 보고되고 있으나 차수용 박층 멤브레인과함께 사용되는 콘크리트 재료에 비해 장기적인 성능에 관한 연구는 부족한 실정이다. 본 연구에서는 아레니우스 반응식을사용하여 재료의 장기적인 성능을 추정하고자 하였다. 연구에 사용된 온도조건은 65°C, 80°C 그리고 95°C로 구분하였으며장기 거동을 확인하고자 차수용 박층 멤브레인을 콘크리트 블록에 부착한 상태에서 해당 온도를 유지하였다. 일정한 온도가유지된 차수용 박층 멤브레인은 30, 90, 150, 200, 300일을 기준으로 시간이 경과된 시점에서 순차적으로 인장강도 및 부착강도 실험을 진행하였으며, 차수용 박층 멤브레인이 온도와 시간에 의한 특성 변화를 추정하여 재료의 장기 성능을 판단하고자하였다. 실험을 통해 차수용 박층 멤브레인 성능기준의 50% 수준에 도달하는 시간을 간접적으로 추정할 수 있었다.
Abstract
The sprayable waterproofing membrane is a recently introduced material in the civil engineering field, and is a material that sprays and attaches a single phase or two phase powder or liquid material to a surface to be covered using a pump and nozzle. Although the material properties are gradually reported through researches, there is a lack of studies on long-term performance compared to concrete materials used with the membranes. In this study, the long-term performance of materials was estimated using the Arrhenius equation. The temperature conditions used in this study were 65°C, 80°C and 95°C, and the temperature was maintained with the membrane attached to the concrete block for long-term behavior. Then the membranes were tested for tensile strength and adhesion strength in the order of 30, 90, 150, 200, and 300 days. The long-term performance of the material was determined from a long-term perspective by estimating the activation energy by the Arrhenius equation. Consequently, the time to reach 50% of the performance standard could be estimated by long-term test.
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