This is an example of using self-healing concrete [Basilisk] HA (healing agent). The place is inside the Mukawa Factory of Aizawa High Pressure Concrete Co., Ltd. HA is used on the wall surface of the curing water tank for large concrete products. It also serves as a performance test of Basilisk, and we intentionally generated cracks in several places and followed up. A large amount of water leakage was confirmed when the water tank was filled with water, but it was confirmed that the water leakage from all the cracks stopped in about 2 to 3 weeks.