CHEMICAL PRESTRESS-INTRODUCING MATERIAL AND CHEMICAL PRESTRESS-INTRODUCED HIGH STRENGTH CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a means for easily introducing chemical prestress to remarkably increase the resistance against the fracture due to tensile stress into high strength concrete by improving the difficulty of the introduction of chemical prestress to the high strength concrete having about≥40 N/mm2compressive strength with the mixing of an expansive additive when the resistance against the fracture due to the tensile stress is intended to be remarkably increased by introducing chemical prestress to concrete in which remarkable improvement of tensile strength is difficult so far compared to that of the compressive strength. SOLUTION: The chemical prestress introducing material containing a shrinkage reducing agent and the expansive additive containing 25-90 wt.% free quick lime is mixed with the high strength concrete. COPYRIGHT: (C)2006,JPO&NCIPI