REINFORCING BAR SPACER FOR A CONCRETE STRUCTURE USING ULTRA-HIGH PERFORMANCE CONCRETE WITH MORE THAN 120MPa COMPRESSIVE STRENGTH AND CONCRETE STRUCTURE USING THE SAME

摘要

PURPOSE: A reinforcing bar spacer for a concrete structure using ultra-high performance concrete and a concrete structure using the same are provided to minimize structural defects by managing high stress transferred from a structure body. ;CONSTITUTION: A reinforcing bar spacer for a concrete structure using ultra-high performance concrete is manufactured using Ultra High Performance Concrete. The UHPC is composed of silica fume 5~30 weight%, fly ash 0~30 weight%, fine aggregate100~130 weight%, filler 20~40 weight%, water reducing agent 1.5~5 weight%, fiber 10~50 weight%, and mixing water 20~30 weight%.;COPYRIGHT KIPO 2011