TY - JOUR
T1 - Experimental study on strength and flexural toughness properties of waste fishing net hybrid fiber-reinforced cementitious composites
AU - Park, Jun Kil
AU - Hong, Ki Nam
AU - Choi, Seoung Ik
AU - Han, Taek Hee
AU - Kim, Min Ook
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/9/1
Y1 - 2022/9/1
N2 - In this study, the flexural response of waste fishing net hybrid fiber-reinforced cementitious composites (WFN-HFRCCs) was experimentally investigated to evaluate the hybrid effect of WFN fibers. Three different WFN fibers, 40 mm macro-WFN fiber and two micro-WFN fibers, and two different mix compositions (1.0%, 0.5 + 0.5%) were used to investigate the hybrid effect. The effect of micro-WFN fibers was confirmed by 25% reduced free shrinkage compared to control. WFN-HFRCCs containing both macro- and micro-WFN fibers exhibited 29% increased flexural toughness and 78% improved residual strength than the WFN-FRCCs produced with single WFN fibers. Reinforced samples (WFN-HFRCCs) with hand-cut macro-WFN fibers and grinded waste rope fibers (HNRs) exhibited the highest compressive strength, flexural strength, and residual strength, whereas they did not show significant improvements in the shrinkage and rapid chloride penetration test results. The compressive strength and residual strength of WFN-HFRCCs with HNR were 11% and 100% higher, respectively, than those of the WFN-FRCCs. Thus, the hybrid effect of the WFN fibers was confirmed from the improved strength and ductility under flexural load.
AB - In this study, the flexural response of waste fishing net hybrid fiber-reinforced cementitious composites (WFN-HFRCCs) was experimentally investigated to evaluate the hybrid effect of WFN fibers. Three different WFN fibers, 40 mm macro-WFN fiber and two micro-WFN fibers, and two different mix compositions (1.0%, 0.5 + 0.5%) were used to investigate the hybrid effect. The effect of micro-WFN fibers was confirmed by 25% reduced free shrinkage compared to control. WFN-HFRCCs containing both macro- and micro-WFN fibers exhibited 29% increased flexural toughness and 78% improved residual strength than the WFN-FRCCs produced with single WFN fibers. Reinforced samples (WFN-HFRCCs) with hand-cut macro-WFN fibers and grinded waste rope fibers (HNRs) exhibited the highest compressive strength, flexural strength, and residual strength, whereas they did not show significant improvements in the shrinkage and rapid chloride penetration test results. The compressive strength and residual strength of WFN-HFRCCs with HNR were 11% and 100% higher, respectively, than those of the WFN-FRCCs. Thus, the hybrid effect of the WFN fibers was confirmed from the improved strength and ductility under flexural load.
KW - Hybrid fiber-reinforced cementitious composites
KW - Mechanical properties
KW - Micro waste fishing net fibers
KW - Post-cracking behavior
UR - http://www.scopus.com/inward/record.url?scp=85131119644&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2022.115833
DO - 10.1016/j.compstruct.2022.115833
M3 - Article
AN - SCOPUS:85131119644
SN - 0263-8223
VL - 295
JO - Composite Structures
JF - Composite Structures
M1 - 115833
ER -