Bond–slip analysis of basalt fiber-reinforced concrete incorporating rice husk ash and nano rice husk ash under impact loading

Recent research has been conducted to investigate the dynamic behavior of fiber-reinforced concrete (FRC) under impact
loading conditions. This study focuses on examining the structural response of basalt fiber–reinforced concrete (BFRC)
incorporating rice husk ash (RHA) and nano rice husk ash (nRHA) when subjected to impact forces. The findings
highlight the critical influence of fiber failure modes, particularly under dynamic impact conditions. The study introduces
a range of concrete mixtures with varying combinations of RHA and nRHA, along with different proportions of basalt
fiber. Rather than completely replacing ordinary Portland cement (OPC), micro-particle RHA and nRHA were partially
substituted at varying percentages (5%, 10%, 15%, 20%, 25%, and 30%). All mixtures included a constant 0.5% volume
fraction of basalt fiber. These combinations were systematically evaluated to assess their impact resistance, providing
insights into the synergistic interaction among these materials. The experimental results indicate that the mixtures
containing 15% RHA with 0.50% basalt fiber and 20% nRHA with 0.50% basalt fiber demonstrated the highest toughness
under impact loading conditions. This finding emphasizes the importance of optimizing BFRC composition with RHA
and nRHA to enhance its structural performance in dynamic loading environments.