Prediction Equations for Shrinkage Strain of Concrete with Mixed Cement

Abstract

The authors developed a prediction equation for the shrinkage strain of concrete to cope with various design conditions of concrete structures. The developed equation allows input of the effects of cement types, aggregate shrinkage strain, and the application of liquid water, in addition to the conventionally indicated mix proportion of concrete and ambient relative humidity. The equation is formulated using a 3D material-structure interaction analysis system (DuCOM-COM3). The equation can explain the phenomena that is considered to be caused in part by concrete shrinkage, such as strain of concrete in prestressed concrete girders in service using blast furnace cement concrete.