SYSTEM AND A METHOD FOR EVALUATING A CONTRACTION STRESS OF CONCRETE THROUGH MEASURING A DEFORMATION AMOUNT OF THE STEEL REINFORCEMENT, CAPABLE OF CALCULATING A CONTRACTION STRESS OF A STEEL REINFORCEMENT BY MEASURING A DEFORMATION AMOUNT OF THE STEEL REINFORCEMENT ACCORDING TO A SHRINKAGE STRESS OF CONCRETE

摘要

PURPOSE: A system and method for evaluating a contraction stress of concrete through measuring a deformation amount of the steel reinforcement are provided to accurately predict and evaluate with respect to cracks of concrete and to figure out a changing progress of a contraction stress at each material age.;CONSTITUTION: A system for evaluating a contraction stress of concrete through measuring a deformation amount of the steel reinforcement comprises a concrete specimen(10), a tubular deformed bar(20), a deformation measuring gauge, and a deformation recording system(40). The tubular deformed bar is inserted in a longitudinal direction of the central part of a concrete test piece. The deformation measuring gauge is joined to the inner circumference of the tubular deformed bar. The deformation measuring gauge is connected to the deformation measuring gauge by a wire(35). A plurality of the deformation measuring gauges is joined to the inner circumference of the tubular deformed bar.;COPYRIGHT KIPO 2012