Experimental investigation of mechanical behaviors of EPS foamed concrete-filled pultruded GFRP sandwich panels

Sensen Li; He Wang; Huguang He; Yang Liu; Hualin Fan

Polymer Testing (Dec 2021)

Experimental investigation of mechanical behaviors of EPS foamed concrete-filled pultruded GFRP sandwich panels

Sensen Li,
He Wang,
Huguang He,
Yang Liu,
Hualin Fan

Affiliations

Sensen Li: Department of Civil Engineering, Nanyang Institute of Technology, Nanyang, 473004, China; State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing, 210007, China
He Wang: State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing, 210007, China
Huguang He: State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing, 210007, China
Yang Liu: State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing, 210007, China
Hualin Fan: Department of Civil Engineering, Nanyang Institute of Technology, Nanyang, 473004, China; State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; China National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing Institute of Technology, Beijing, 100081, China; Corresponding author. Department of Civil Engineering, Nanyang Institute of Technology, Nanyang, 473004, China.

Journal volume & issue: Vol. 104
p. 107401

Abstract

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Pultruded sandwich panels (PSPs) usually possess lightweight but high load-carrying ability. One of the shortcoming is the low transverse shear resistance. To overcome this deficiency, Expanded Polystyrene (EPS) foamed concrete was designed, fabricated and filled into the web-core of the PSP. Flatwise compression experiments were performed to reveal the mechanical behaviors of the EPS foamed concrete varying with the density. Flexural experiments were conducted to reveal the flexural performances of the foam-filled PSPs, as well as the failure patterns. The bending rigidity of the PSPs is increased from 0.28 kN/mm from unfilled to 9.5 kN/mm after filling, and the bending rigidity of the PSPs is increased by 46.1 times. The load capacity of the PSPs is also profoundly improved from 3.02 kN to 23.63 kN. The failure pattern of the foam-filled PSP transforms from core shear failure, local indentation to mono-cell skin fracture when increasing the foam density.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

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