복합방수시트의 구성재료에 따른 반복 거동특성 및 접착계면 응력전달 분석

This study analyzed the characteristics of waterproofing construction methods through repeated behavior tests, focusing on representative waterproofing methods designed to prevent water leakage and enhance the longevity of buildings in terms of maintenance. The internal structure of the waterproof sheet consisted of multiple layers, utilizing a compound or non-hardening seal applied by the manufacturer onto the film surface. After affixing the waterproof sheet onto concrete segments artificially marked with cracks, a total of 10 strain gauges were installed in areas with a high likelihood of leakage. The widths of the crack simulations were set at 2, 4, 6, 8, and 10 mm, with experiments conducted continuously, with the width increasing by 2 mm after every 15 repeated actions. The stress generation and strain response on the concrete adhesion surface varied depending on the method employed. Method A demonstrated a strong coupling between concrete and waterproof sheets, indicating synchronized behavior. Conversely, methods B and C, featuring non-hardening seals with high viscosity, exhibited significant stress absorption from the adhesive layer, consequently reducing transmission to the waterproof sheet surface. In the case of method D, stress transfer was diminished due to separation from the waterproof sheet at the artificial crack area during repeated behaviors.