Application of glass fiber recovered from scrapped FRP to discontinuous fiber reinforced mortar

摘要

This paper describes methods to make effective use of scrapped Fiber Reinforced Plastics (FRP) for admixture of mortar and concrete. The mixing method and the flexural property of discontinuous fiber reinforced mortar were investigated using glass fiber which was reproduced to reclaim and decompose the scrapped FRP with the aerial pulverizer. From this experiment it was found that the flexural strength and toughness of mortar were improved with an increase in fiber content. Furthermore, it is possible to restrain the decrease of mortar strength with the ages by an alkali deterioration for glass fiber by replacing 30 to 50% of cement with blast-furnace slag.