DEVELOPMENT PROCESS AND APPLICABILITY OF A ULTRA-HIGH STRENGTH FIBER REINFORCED CONCRETE WITHOUT HEAT CURING

Abstract

 Production of ultra-high strength fiber reinforced concrete (UFC) generally requires heat-curing of high temperature. The UFC manufacturing at a site is often hard because of no heating equipment. The purpose of this study was to investigate proper materials and mixture for a UFC manufacturable under ambient temperature. In addition, to confirm the applicability of the developed UFC, the study conducted fundamental tests at a site by using the UFC supplied from a ready-mixed concrete plant. The study showed that a cement with a low C₃A and high C₃S content, water-binder ratios of 14% to 21%, and flow of 230mm to 290mm are suitable for the UFC without heat curing.