Abstract
In this paper, durability for frost damage of fly-ash sand mortar, and ones reinforced with vinylon fiber, carbon fiber, pulp and calcium carbonate form is discussed. This fly-ash sand is a kind of new light weight artificial aggregates which were made from fly-ash. Using a probabilistic model of microcrack accumulation, the relation between the relative reduction of dynamic modulus of elasticity and the freezing and thawing cycles was analyzed. Although fly-ash sand mortar has rather low durability for frost damage, the durability of fiber reinforced ones is remarkably improved. Finally the improved mechanism for frost damage is discussed on the basis of the experimental results.
