DefinePK

Abstract

This research was conducted to determine the effect of increasing temperature on the compressive strength of geopolymer concrete. The specimens used in this study is cylindrical concrete with a diameter of 150 mm and a height of 300 mm and the design compressive strength, f'c is 30 MPa. The variable in this study was the molarity of the NaOH solution in the geopolymer with variations of 4M, 6M, and 8M. Before the compressive strength test, some of the specimens were burned at a temperature of 1000°C. In this study, some of the specimens are coated with fire-retardant additives on its surface. The results of this study indicate that the 8M NaoH geopolymer concrete with fire-retardant coating shows highest residual compressive strength at 54.7 %. It can be stated that the molarity value of NaOH and fire-retardant additive coating will be able to provide geopolymer concrete structure resistance to elevated temperature due to fire accident.