抄録
From the view point of a stochastic theory, this paper has presented a theoretical consideration of the properties of fracture strength of concrete materials under simple loading, which is dependent on several factors such as the kind of stress, stress disturbance by heterogeneity (because of aggregates and water), and size effect. After assuming the probability density function of the stress disturbance factor : f(c) as the gamma distribution, the effects of material defects on the probability density function of the fracture strength are discussed. These properties are ascertained by comparison with the results of some experimental procedures.
