Journal
CEMENT & CONCRETE COMPOSITES
Volume 108, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2019.103509
Keywords
Ultra-low-weight foamed cement-based composites; Fiber hybridization; Fracture toughness; Synergistic reinforcing effect
Funding
- Sichuan Science and Technology Program [2017FZ0046, 2019YJ0554]
- Young Elite Scientist Sponsorship Program by CAST
- State Key Laboratory of Polymer Materials Engineering [sklpme2019-2-05]
- Hong Kong Scholars Program
- Deyang Key Science and Technology Program [JYCC20170066, 2019SZ074]
- Sichuan College of Architectural Technology Foundation [2015KJ15]
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In this paper, 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 have been comprehensively evaluated. The fiber hybridization performed better fracture performances than that of incorporation of 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. Accordingly, this work is helpful towards the foundation of optimal design for fracture toughness analysis in fiber-reinforced lightweight cement elements.
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