Author/Authors :
Suryanto, B. Heriot-Watt University - School of Energy, Geoscience, Infrastructure and Society, Institute for Infrastructure and Environment, UK , Wilson, S.A. Heriot-Watt University - School of Energy, Geoscience, Infrastructure and Society, Institute for Infrastructure and Environment, UK , McCarter, W.J. Heriot-Watt University - School of Energy, Geoscience, Infrastructure and Society, Institute for Infrastructure and Environment, UK
Abstract :
The performance of an Engineered Cementitious Composite (ECC) to self-heal micro-cracks under a controlled laboratory environment is presented. Ten dog-bone shaped samples were prepared; five of them were preloaded to known strains and then left to heal in water in a temperature-controlled laboratory. Ultrasonic pulse velocity (UPV) measurements were undertaken to monitor the crack-healing process. It was found that all samples exhibited recoveries in UPV and were able to recover to between 96.6% and 98% of their pre-test UPV values over a period of four weeks. An accelerated rate of healing was observed in the initial two-day period immediately following the preloading test.
Keywords :
Cementitious composite , ECC , self , healing , crack , ultrasonic pulse velocity
