The flexural behavior and fracture parameters of ultra-low-weight foamed cement-based composites (FCC) reinforced by a novel fiber hybridization containing short PP fiber and CaCO₃ whisker was investigated. The flexural behavior, fracture failure, fracture toughness and fracture energy of FCC with multi-scale fibers has been comprehensively evaluated. The fiber hybridization performed better fracture performances than that of incorporation of either mono PP fiber or CaCO₃ whisker, which has provided a grading crack resistance in the ultra-low-weight FCC, and achieved the synergistic reinforcing effect. This work is helpful towards the foundation of optimal design for fracture toughness analysis in fiber-reinforced lightweight cement elements.

研究了由短PP纤维和CaCO ₃晶须组成的新型纤维杂交增强的超低重量泡沫水泥基复合材料的弯曲行为和断裂参数。综合评估了多尺度纤维FCC的弯曲行为，断裂破坏，断裂韧性和断裂能。与掺入单PP纤维或CaCO ₃晶须相比，纤维杂化表现出更好的断裂性能，这在超低重量FCC中提供了分级的抗裂性，并达到了协同增强的作用。这项工作有助于为纤维增强的轻质水泥构件的断裂韧性分析的最佳设计奠定基础。