EXPERIMENTAL-ANALYTICAL. SIZE-DEPENDENT PREDICTION OF MODULUS OF RUPTURE OF CONCRETE

The procedure for experimental-analytical prediction of flexural strength is reviewed. It allows consideration of size effect phenomena with only minor modification of standard laboratory test procedure. Two possibilities are suggested: testing with one size only and testing with two sizes. The application of this procedure to real case, a massive concrete subway tunnel constructed recently in Prague, is shown. This real case study demonstrates feasibility of the proposed approach