The Influence of Waste Tire Powder on Mechanical and Acoustic Properties of Autoclaved Aerated Concrete

Waste tires left in the environment are now becoming a global problem. On the other hand, the use of minerals consumed in the construction industry, in addition to being expensive, may reduce the natural mineral reserves around us. Using waste tire powder to make Autoclaved Aerated Concrete (AAC) is cost-effective. The presence of rubber powder inside the AAC leads to the toughness of the concrete and increases the elongation at break, and gives the plastic behavior to the concrete. In this study, rubber powder of different sizes was used as a filler inside the autoclaved concrete. The presence of elastic rubber particles enhances the sound absorption of AAC. The results revealed that by changing the amount of aluminum added to the concrete mixture, the impact of rubber addition on the density of AAC could be controlled. Reducing the particle size of tire powder also increases the sound absorption of AAC.