QUICK HARDENING TYPE HIGH TOUGHNESS FIBER-REINFORCED CERAMIC MATERIAL AND METHOD OF FORMULATING THE SAME

摘要

PROBLEM TO BE SOLVED: To establish a technique for a repairing and reinforcement process by placing or spraying which is capable of attaining a prescribed effect with minimum curing to early develop the performance of high toughness fiber-reinforced ceramic (FRC) and is effective for reinforced stiffness, the suppression of the occurrence of crack and the improvement of the durability of an existing structure by virtue of the micronization of crack. SOLUTION: In the crack dispersion type high toughness FRC material obtained by blending PVA short fibers to a cement-based formulation material and showing≥0.2% tensile strain in the tensile test, the tensile strain in a material age of 1-5 days satisfies a required value of≥0.2% by adding a hardening accelerator consisting essentially of anhydrous gypsum in a ratio by weight of 1/1000-1/3 to cement to be used. COPYRIGHT: (C)2007,JPO&INPIT