Porous ceramic roof-tile waste aggregate (PCA). which is a recycled material. is an effective internal curing material for concrete. Part of the aggregate is replaced with saturated internal curing material to supply internal water into the cement paste continuously. https://www.spidertattooz.com/The-Creme-Shop-X-Hello-Kitty-Pure-Cure-Strawberry-Milk-Toner-Klean-Beauty-p14481/