Effect of Fly-Ash on Fresh Concrete Using Cement of High Temperature

Ready mixed concrete plants near the cement factory often use cement of high temperature, because fresh cement is directly provided from the cement factory. According to a previous investigation, concrete with high temperature cement indicates significant slump-loss. The purpose of this study is to propose an effective mixture to reduce slump-loss of the concrete. The experimental study firstly investigates flowabilities of paste using alternative materials of cement, i.e. fly-ash and limestone powder. In addition, this paper reports slump tests of concrete using the powder materials. The experimental investigation indicates that concrete with 20% replacement of fly-ash can effectively reduce slump-loss.