METHOD OF QUALITY CONTROL AT PRODUCTION PROCESS OF PRECAST CONCRETE COLUMN

Abstract

The strength of precast concrete is tested at production process with the test specimen made by the same curing method as an actual precast concrete element. However, the temperature history of precast concrete column with the large cross sectional size is different from that of test specimen. The difference in temperature history causes the difference of strength development between the two. The purpose of this study is to propose new types of test specimens cured under the same temperature conditions with the actual precast concrete column. The test specimens are covered with insulation and formwork according to the position in the precast concrete column.