Abstract
The theoretical probability distribution for bending strength of concrete has been derived by assuming the one step stochastic process model, and for compressive strength, by assuming the two steps stochastic processes model these stochastic models were based on the investigation about bending and compressive fracture processes of concrete. The frequency distributions of bending and compressive strengths have been obtained from the testing results of 150 specimens of mortar. Next, the probability distributions have been obtained from 30 specimens for three kinds of mortar and one kind of concrete. It has been recognized that the probability distributions by tests were agreed with the thoretical ones. It has been shown that the theoretical distributions proposed in this paper were suitable and usefull for the mortar and concrete strengths with the scattering.
