Shear behavior of HVFA-SCC beams without stirrup.

The use of fly ash as a partial replacement for cement in concrete production is one solution to reduce the effects of global warming. In this context, HVFA-SCC concrete is a type of environmentally friendly concrete with advanced technology. However, the use of SCC concrete still faces challenges, such as the lack of aggregate interlock effect that can reduce the shear strength of concrete beams. Therefore, this paper examines the behavior of 100x185x1300 mm HVFA-SCC concrete beams with the use of fly ash as a substitute for cement at 50% of the total binder weight. Beam testing was conducted using a four-point loading system on three test beams. The results of the beam tests showed the formation of initial diagonal tension cracks and primary diagonal cracks at loading of around 30% and 95% of the ultimate shear load, respectively. After the primary diagonal cracks formed, crack propagation rapidly occurred and triggered the failure of the concrete beam shear. [ABSTRACT FROM AUTHOR]