Creep Estimation Method of Reinforced Concrete Columns Using High Strength Concrete in Consideration of Construction Process

Abstract

Measure on long −term compressive propertiesofrcinforced concrete co ］ umns using high strength concrete were carried out ． TWo actua 且 co 且 umns in a 45 − story building had been measured for about two years a 負er casting ． Additionally ， one −third−scale じolumns under step −by−step incrementa ］ Ioad邑 ng ， simulating actual stress condition in じonsiderarion of construction process were a 且 so measured f(〕 r abou ロ hree years 、 The compress 孟 ve creep model f (〕r high strength concrete ， whioh ismodifiedusing CEB −FIP model code l990 ， was proposed for the predictionofthe compressive performance ofthese columns ．