ADJUSTMENT OF RILEM B4 MODEL PARAMETERS FOR BETTER PREDICTION OF THE SHRINKAGE RESPONSE OF BLENDED CEMENT CONCRETE

摘要

This paper aims to adjust the model parameters of the B4 and B4s models using newly collected laboratory data for blended cement concrete systems of strength grades 25 MPa and 65 MPa. Based on the data, regression analysis for the B4s model has been performed to capture the shrinkage response at later ages better. Also, suitable adjustment of the model parameters for aggregate type and the composition of the binder was carried out. After the adjustment, the model seems to be yield improved predictions for the data set.