INVESTIGATION OF THE COMBINED EFFECT OF RECYCLED TIRE RUBBER (RTR) AND CRUSHED WASTE GLASS (CWG) PARTICLES ON MECHANICAL  PROPERTIES OF CONCRETE

This study explores the development of Rubberglasscrete, a novel concrete type that contains Recycled Tire Rubber (RTR) and Crushed Waste Glass (CWG), enhancing the dynamic characteristics of the material to a new level while maintaining structural integrity. The energy absorption capacity for the rubberized concrete was considerably higher compared to traditional concrete. Conversely, an increase in the percentage of rubber resulted in significant declines in both compression and flexural strengths. To counteract this crushed glass, particularly green glass which is low in Alkali-Silica Reaction (ASR), was used to partially replace fine aggregates. The pozzolanic reaction of glass particles enhanced the compressive strength by supplying an additional Calcium Silicate Hydrate (C-S-H) gel. Moreover, it enhances the flexural strength and fills the gaps left by the rubber particles. Importantly, RTR reduced the expansion caused by the ASR by causing the ASR gels to swell and relieving internal stress. This, in turn, further reduced the development of ASR due to CWG. The experimental results indicate that a combination of 10% CWG and 7.5% RTR replacement can sustain a compressive strength that surpasses the G30 characteristic strength, while also maintaining a satisfactory energy absorption capacity and durability. Tests of impact energy show that the impact resistance and crack resistance capacity are appropriate for dynamical load, making it a suitable material for seismic and vibration areas. Moreover, this study contributes to global sustainability goals by recycling waste materials, thereby reducing environmental effects and enhancing the properties of concrete. Rubberglasscrete provides a practical, eco-friendly option for the construction industry that requires excellent energy dissipation and structural integrity, establishing the framework for future industrial and sustainable applications.