Research on Impact-Abrasion Resistance of High-Strength Concrete with Recycled Rubber

To improve the impact and abrasion resistance of concrete while minimizing the detrimental effects on compressive strength caused by the addition of rubber, a novel high-density rubber concrete was designed based on the closest packing model. The influence of different rubber content on the impact and abrasion performance, as well as the mechanical properties, was analyzed. The underlying mechanism behind the impact and abrasion resistance of high-density rubber concrete was elucidated. The results revealed that the high-density rubber concrete exhibited excellent resistance to impact and abrasion. Compared to the high-density reference concrete, the impact and abrasion strength of rubber concrete initially increased and then decreased as the rubber content gradually increased from 10% to 20% and 30%. Considering both the degradation of compressive strength and the enhancement of impact and abrasion strength, the optimal rubber particle content was determined to be 10% for high-density rubber concrete.