Influence of aggregate type on the cement concrete

Abstract

The studies regarding the influence of mixed components on the mechanical characteristics of concrete had shown that crushed aggregates contributed to the increase of concrete strength. In this paper, a quantification of mechanical strength modifications which occurred by using crushed aggregates for concrete grade C25/30 is presented. Mechanical strengths are experimentally determined and compared with a control mix. The idea is that the specific surface of crushed aggregates is bigger, in the case of maintaining the same quantity of water, resulting in a bigger adherence between the matrix and aggregates. Also is considered that the strength of aggregate is bigger when it is produced from basalt rock.