Structural behaviour of composite sandwich panels with plain and fibre-reinforced foamed concrete cores and corrugated steel faces

TLDR: In this paper, the four-point bending response and failure mechanisms of sandwich panels with corrugated steel faces and either plain or fibre-reinforced foamed concrete core were investigated.

About: This article is published in Composite Structures.The article was published on 2012-04-01 and is currently open access. It has received 81 citations till now. The article focuses on the topics: Sandwich panel & Sandwich-structured composite.

Figures

Figure 3 Four-point bending test set-up.

Figure 7 Failure modes observed during four-point bending of sandwich panels: a) core shear failure under the loader, b) face wrinkling and face/core debonding, c) slippage of the bottom face, d) cracking around the fastener, e) initial face/core debonding, f) core tensile failure in the mid-plane of the specimen and core shear failure under the loader for specimen #4.

Figure 4 Typical uniaxial compression stress-strain curves for a) PFC and b) FRFC; indentation test stress-strain curves for c) PFC and d) FRFC.

Table 1 Mix constituent proportions of foamed concrete for 1 m3.

Figure 6 Typical load-displacement curves for sandwich panels with PFC core: a) specimen #1, b) specimen #2; and with FRFC core: c) specimen #3, d) specimen #4.

Table 2 Polyvinyl alcohol fibre properties from the manufacturer [12].

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This paper studies the four-point bending response and failure mechanisms of sandwich panels with corrugated steel faces and either plain or fibre-reinforced foamed concrete core.