抄録
The authors have already made clear the deterioration mechanism of durability of concrete structures due to the meteorological action, especially, the fundamental mechanism of deterioration due to the dry and wet action and the freezing and thawing action, and the effect of the concrete factors on them. This paper furthermore deals with the effect of the initial moisture content of concrete on the freezing and thawing resistance and analyzes mathematically the concrete factors dominating the elastic modulus of elasticity.