ABSTRACT

Although the mechanical performance immediately after the production of short-fiber reinforced concrete has been clarified, no study has evaluated the long-term mechanical performance. In particular, the influence of water has not been considered. This study evaluates the bending strength and bending toughness of aramid short-fiber reinforced concrete after exposure to water and air with different temperatures. The results show that the mechanical performance after exposure to water decreases with time as the exposure temperature increases while the mechanical performance after exposure to air is kept. Furthermore, the mechanical performance after exposure to water for 100 years at 20℃ was estimated by exposing the concrete to water for 1 month to 3 years at a high temperature.