건설재료시공학연구실

Building material & construction lab.

Abstract

In case of concrete, it should be deformed by many factors such as explosive spalling, thermal strain and creep at high temperature. structural fire design have been proposed to predict fire damage as national standard. It is general safer to use values obtained from tests of unstressed residual test in stead of stressed test. But most of thermal properties on concrete was conducted with normal aggregate. In this study, test was conducted to evaluate stressed effect concerning normal weight and light weight concrete of 60MPa. Our experimental procedure was based on RILEM recommendation. Loading level was 0, 20 and 40 percent of compressive strength at room temperature. And thermal strain properties of concrete was carried out by 100, 200, 300, 500 and 700℃. Also, results can be analyzed as compare thermal strain properties at elevated temperature with CEN and CEB code.