| 要旨 |
This study examines hybrid fiber-reinforced cementitious composites (HP-HFRCC) with polypropylene (PP) and smooth steel fibers (SSF) under high-temperature and high-velocity impact conditions. Specimens tested from 25°C to 700°C showed hybrid-reinforced types (Fc100PPSF, Fc140PPSF) excelled in spalling, scabbing, and penetration resistance. Adding 0.15% PP and 1% SSF reduced mass loss and fractures, proving HP-HFRCC’s value for disaster-resilient smart city infrastructure with enhanced durability. |