Post-fire Behavior of Modified Slurry Infiltrated Fiber Concrete (SIFCON) Plates with Waste Tire Rubber under Flexural Load

Abstract

In this research, an experimental investigation was conducted on eight modified slurry-infiltrated fiber concrete (SIFCON) one-way plates to examine the performance of SIFCON-containing waste powder rubber as a partial substitute for natural sand (0, 5, 10, and 15%) under two point loads applied at the third portions of the plate after being subjected to a high temperature. The incorporation of rubber particles is primarily motivated by environmental concerns and the desire to reduce the danger of spalling after exposure to elevated temperatures. All adopted specimens had identical dimensions (1000 mm length, 300 mm width, and 50 mm thickness). Four specimens were exposed to fire for two hours at a constant temperature of 600°C, after which they were rapidly cooled by spraying them with water. The flexure behavior of the simply supported plates was evaluated by applying two point loads to the middle third of the plate (a test of four point load). The results revealed that the residual ultimate load of the burned plates with powder rubber replacement percentages of 0, 5, 10, and 15% was 83.3%, 61.08%, 61.03%, and 58.73%, respectively.