Utilizing Local Waste Materials to Produce Eco-friendly, Thermally Resistant Concrete

Tires rubber waste (RW) accumulate as the population grows and demand for vehicles increases.As concrete plants are erected, more cement is made, releasing hazardous gases.The fly ash (FA) accumulation from power stations has increased, so experts must find solutions to address these challenges.In the current study, cement was replaced by 25%, 30%, and 35% FA.Silica fume (SF) was used at 10% of the cement weight to prevent FA from reducing concrete strength.A part of the specimens was subjected to temperatures of 400℃ and 800℃ to study the response of the specimens to heat.The combination contained 0.5% RW of the fine aggregate weight to prevent the specimens from spalling.The splitting tensile strength (STS) test was employed to examine the mechanical strength, while the ultrasonic pulse velocity (UPV) test was incorporated to validate the results of the mechanical characteristics behavior.An investigation was conducted to examine the impact of elevated temperatures on the weight and surface color of the concrete specimen.The combined 30% FA with 10% SF and 0.5% RW enhanced the STS by 32% at normal temperature and 56.6% at 400℃, while the UPV readings remained in the rank (good) until 400℃ for the same specimen.While the 800℃ significantly reduced the quality of all mixes, including the specimen weights.The color changes of the specimen were clearly explained.The findings suggested that the FA and RW materials could be used in concrete to preserve the environment as cleanly as possible.