ULTRA-HIGH PERFORMANCE FIBER REINFORCED CEMENTITIOUS COMPOSITES AND MANUFACTURING METHOD

摘要

PURPOSE: A manufacturing method of ultra high performance fiber-reinforced cement composite and ultra high performance fiber-reinforced cement composite are provided to reduce viscosity of cement complex and mixing time and to increase application property by using fine silica powder as substitute for cement. CONSTITUTION: Ultra high performance fiber-reinforced cement composite is composed of the mortar and combined water. The mortar includes 10-30 parts by weight of silica micro-powder which contains zirconium having specific surface area of 80,000-120, 000cm^2/g based on 100.0 parts by weight of cement. The mortar additionally includes 100-130 parts by weight of sand having particle size of less than 5mm and 10-30 parts by weight of filler based on 100.0 parts by weight of cement. A ratio of the combined water to binding material which is composed of silica micro-powder containing cement and zirconium is 0.22 or less.