EXPERIMENTAL STUDY ON 150 MPa ULTRA HIGH STRENGTH CONCRETE CONTROLLING AUTOGENOUS SHRINKAGE

Abstract

It was experimentally studied to find an effective method for the reduction of the autogenous shrinkage of 150 MPa ultra high strength concrete, and the following results were obtained; 1) The use of an expansive agent, a shrinkage reducing agent and an artificial light-weight aggregate can reduce the autogenous shrinkage respectively. Moreover, the combining usage shows an accumulative effect. 2) The light-weight aggregate used can be an effective and economical answer considering the adequate content to avoid the excessive strength loss and the combination with other two additives tested for the sufficient shrinkage reduction.