Reinforcement effects of multi-scale hybrid fiber on flexural and fracture behaviors of ultra-low-weight foamed cement-based composites. (April 2020)

• Record Type: Journal Article
• Authors: Yang, Yuanyi; Zhou, Qi; Deng, Yi; Lin, Jinhui
• Is Part Of: Cement & concrete composites. Volume 108(2020)
• Publication Date: 2020-04
• Subjects: Ultra-low-weight foamed cement-based composites -- Fiber hybridization -- Fracture toughness -- Synergistic reinforcing effect; Composite-reinforced concrete -- Periodicals; Concrete -- Periodicals; Composite materials -- Periodicals; Composites de ciment -- Périodiques; Béton -- Périodiques; Composites -- Périodiques; Béton léger -- Périodiques; Cement composites; Composite materials; Composite-reinforced concrete; Concrete; Lightweight concrete; Periodicals; Electronic journals; 620.135
• DOI: 10.1016/j.cemconcomp.2019.103509
• Languages: English
• ISSNs: 0958-9465

Abstract

Abstract: 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.