Static and dynamic resilient modulus for lightweight concrete

Abstract

One of the major disadvantages, for specific applications, of conventional concrete is its high self weight. The compression resistence of lightweight concrete is smaller when compared to conventional concrete, although the main characteristic presented by lightweight concrete is its low specific mass, that generates a reduction of its self weight in the structures. Therefore, the concrete with light aggregates presents a new advantage in this characteristic. This article has the objective to compare the static and dynamic resilient modulus of concrete with lightweight aggregates: expanded clay, pumice stone, expanded polystyrene (EPS), vermiculite, counterposed to a reference concrete with basalt aggregate. The results indicate that the determination of dynamic resilient modulus, besides being much simpler to obtain, it has a good proximity with the static resilient modulus to lightweight concrete.

Keywords

• concreto leve
• módulo de elasticidade estático
• módulo de elasticidade dinâmico.