High Temperature Performance of Self-Compacting Concrete Containing Boron Active Belite Cement

Abstract

Concrete generally consists of cement, water and aggregate. The cement constitutes about 30% of concrete by volume. Therefore, the varying cement composition plays a crucial role in the behavior of concrete. Since the reinforced concrete (RC) structures could be exposed to very different climatic conditions, as a result of geographic location and altitude, it is important to evaluate the performance of cement based composites [1][2][3]. Cement is widely used in concrete applications such as: bridges, dams, cohesionless soil grouting, cement-based mortar, drainage channels, and foundation planning and tunnels as well as RC structures. The binding ability of cement provided a compact system between coarse and fine aggregates in the concrete mix [4][5][6][7]. The cementbased materials (such as fly ash, silica fume, polymers, blast furnace slag, and etc.) have been used to improve the characteristic properties of cementing system. Besides, the water/binder and curing time significantly affect the rheological and mechanical properties of the composite [6][7][8][9][10][11]. Temperature variation causes major problems for cement, mortar, and concrete due to the accelerated hydration of conventional cements and the rapid evaporation of mixing water. High tem-