GLASS ROVING FOR SPRAY FORMING GRC

摘要

PROBLEM TO BE SOLVED: To provide a glass roving for a spray forming GRC (Glass fiber Reinforced Cement) which has high initial mechanical strength of the GRC and can suppress the degradation in the mechanical strength of the GRC for long time. SOLUTION: The glass roving is composed of glass fibers which contain≥14 mass% ZrO2and are formed by treating their surfaces by a sizing agent. The sizing agent contains an ethylene vinyl acetate copolymer having≥5 mass% content of ethylene at≥55 mass% in the solid content of the sizing agent. COPYRIGHT: (C)2003,JPO