The behavior of Lightweight Aggregate Concrete Made with Different Types of Crushed Bricks

Abstract

Lightweight concrete can significantly reduce a dead load of structural concrete elements compared to normal weight concrete. The reuse of construction and demolition wastes, especially crushed clay bricks, represents a major contribution to the environment. Due to the nature of clay bricks, it can be considered as source of fine and coarse aggregate to produce lightweight structural concrete. In this study, used three types of crushed clay brick as coarse aggregate for concrete aiming to produce structural lightweight concrete. Density, compressive and flexural strengths were tested. Results show that the 28-day air-dry density, compressive and flexural strengths values of the concrete made with Iso crushed brick were higher than that for concrete made with crushed Iranian and Nahrawan bricks. Results of 28 air-dry density and compressive strength show that the lightweight concretes used were complied with the requirements for lightweight structural concrete.