Comparison of the Analytical Models to Determine Modulus of Rupture of Self-Compacting Concrete and Conventional Concrete

Self-compacting concrete (SCC) can be placed under its own weight with no vibration efforts and is cohesive enough to be handled without segregation and bleeding. Modification in the mix design may have an influence on the material’s mechanical properties. Therefore, it is important to investigate that whether all of the assumed hypotheses for conventional concrete (CC) to design the structures are also valid for SCC construction. Indubitably, the modulus of elasticity (MOE) is one of the most important mechanical properties which influences the durability and service life of reinforced concrete. MOE represents the stress-strain relationship of concrete in the elastic range and depends on the stiffness of the cement paste and aggregate, porosity, the interfacial transition zone, size of samples, and mixture proportions. This paper reviews the accuracy of the seven models for prediction of MOE for SCC and fifteen models for CC. The predicted MOE models are compared with the actual measured experimental values in 110 mixtures of SCC and 32 mixtures of CC.