A Review on the Effect of Varied Sand Types in Concrete at High Temperature

: In fact, aggregates in concrete generally occupied a considerable proportion of volume (60%-75%); sand constitutes about 30% to 50% of aggregates volume. It is well known that the nature of aggregates plays an important role on quality and properties of concrete. This suggests that the behavior of concrete exposed to high temperature is strongly linked to the nature and mineralogy of aggregates (coarse and fine aggregates). Furthermore, the description of the effect of high temperature on the components of concrete is intended to improve understanding of how concrete responds when it is exposed to elevated temperature. The fire performance of concrete depends on the thermal, physical and mechanical properties of its components. Sand can be classified into two groups according to its mineralogical nature: Siliceous and Calcareous, these two types of sand undergo different reactions when they are exposed to high temperature. Few studies have been published and showed that the nature of sand affects the concrete behavior at high temperature. This paper summaries the states-of-the-art studies on the mechanical and physical behavior of concrete made with different types of sand after being exposed to elevated temperature. It is revealed that the fire-response of concrete made with calcareous sand is different from that of concrete made with siliceous sand.