Mechanical behaviour of composite sandwich panels with foamed concrete core reinforced with natural fibre in four-point bending

被引：0
|
作者：
Castillo-Lara, J. F. [1 ]
Flores-Johnson, E. A. [2 ]
Valadez-Gonzalez, A. [1 ]
Herrera-Franco, P. J. [1 ]
Carrillo, J. G. [1 ]
Gonzalez-Chi, P., I [1 ]
Agaliotis, E. [3 ,4 ]
Li, Q. M. [5 ]
机构：
[1] Ctr Invest Cient Yucatan, Unidad Mat, Calle 43,130 Col Chuburna de Hidalgo, Merida 97205, Yucatan, Mexico
[2] Ctr Invest Cient Yucatan, CONACYT Unidad Mat, Calle 43,130 Col Chuburna de Hidalgo, Merida 97205, Yucatan, Mexico
[3] Univ Buenos Aires, Fac Ingn, Av Las Heras 2214,C1127AAR, Buenos Aires, DF, Argentina
[4] Univ Buenos Aires, Inst Tecnol Polimeros & Nanotecnol ITPN, CONICET, Av Las Heras 2214,C1127AAR, Buenos Aires, DF, Argentina
[5] Univ Manchester, Sch Engn, Dept Mech Aerosp & Civil Engn, Manchester M13 9PL, Lancs, England
来源：
THIN-WALLED STRUCTURES | 2021年 / 169卷
关键词：
Composite sandwich panel; Foamed concrete; Natural fibre; Polypropylene fibre; Four-point bending; Finite element simulation; SISAL FIBER; CEMENT COMPOSITES; IMPACT RESPONSE; STRENGTH;
D O I：
10.1016/j.tws.2021.108457
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The four-point bending behaviour of composite sandwich panels made of corrugated steel faces and foamed concrete (FC) cores with a density of 700 kg/m(3) is reported. Plain FC (PFC) core and fibre-reinforced FC (FRFC) core, reinforced with an alkaline-treated natural fibre (henequen fibre) at a volume fraction of 1%, were used. FRFC core reinforced with polypropylene fibre was also used as a reference. The results showed that panels with FRFC cores exhibited greater initial failure load, maximum load and energy absorption when compared to the PFC cored panels, which was associated with the enhancements of ductility and toughness of the FRFC cores produced by the fibres. Several energy absorbing mechanisms were observed in the panels, including the development of major tension and shear cracks in the FC core, face wrinkling and face-core debonding. The finite element simulations showed that the face-core bonding plays a crucial role in the structural performance of the panels. The findings presented herein encourage further investigations to assess the use of sandwich panels with natural-fibre reinforced cores for construction applications.
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页数：12
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