2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference

Investigation of Water Leakage and Self-healing Through Direct Tension Cracks in Engineered Cementitious Composites (ECC) Panel

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Mr. Ahmad Hooshmand, Ryerson University (Presenter)
Mr. Mohamed Lachemi,
Dr. M. Reza Kianoush, Ryerson University
Dr. Hocine Siad
Dr. Mehdi Moslemi

Engineered Cementitious Composite (ECC) is considered to have high self-healing potential because of its large amount of cementitious materials which enhances the hydration reaction of cement and fly ash, together with its self-controlled crack width. This material has the potential to control cracking and leakage in liquid containing structures (LCS).  A study on the leakage of pressurized water through direct tension cracks in ECC panels has been carried out. A test set-up was designed to simulate the leakage from wall of these structures. In this experimental program, a full scale normal concrete and several ECC panels are subjected to direct tensile force in order to form full depth cracks. Leakage test is then performed on the cracked panel. The water leaked through the crack is recorded at different water pressures. The rate of leaked water is also recorded over time to study the self-healing potential of the crack in panel. The collected data consists of reinforcement strains, crack widths and the leakage through the cracks. The advantages of using ECC rather than normal concrete in water tightness and self-healing are highlighted. The results of experiments can contribute to use the ECC in LCS due to beneficial water tightness and self-healing properties of this material.