WAVE TYPE STEEL FIBER AND ULTRA-HIGH PERFORMANCE FIBER REINFORCED CEMENTITIOUS COMPOSITES USING THE STEEL FIBER

摘要

PURPOSE: A manufacturing method of a steel fiber for an ultra high performance fiber reinforced concrete and a concrete using the same are provided to increase the mechanical performance such as compressive strength and flexural strength. CONSTITUTION: A steel fiber for an ultra high performance fiber reinforced concrete is mixed in a cement complex and improves the tensile strength of the composite. The steel fiber is formed with a wave shape. The wave number of the steel fiber is 4~8. The wave depth of the steel fiber is 0.12~0.35mm. The wave length of the steel fiber is 1.86~3.82mm. The diameter of the steel fiber is 0.15~0.35mm. The length of the steel fiber is 10~30mm. The tensile strength of the steel fiber is 2000~4000MPa.