Long-Term Structural Behaviour of Composite Sandwich Panels

Publication Type:
Conference Proceeding
Citation:
2017
Issue Date:
2017-04-02
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New materials are great additions to the structural world dominated by concrete and steel creating sustainable products and low impact materials that can go head to head with concrete and steel. The new materials being discovered can often outperform traditional materials and have added benefits that improve the in-life performance such as thermal capabilities and sound insulation. One of these construction materials are sandwich panels made of two materials that are relatively weak in their separated state, but are improved when they are constructed together in a sandwich panel. Sandwich panels can be used for almost any section of a building. Polystyrene/cement mixed core and thin cement sheet facings sandwich panels are Australian products made of cement-polystyrene beaded mixture encapsulated between two thick cement board sheets. Long-term structural behaviour of these sandwich panels are relatively unknown. Therefore, in this study, in order to understand the creep and creep recovery behaviour and properties of those sandwich panels, a series of experimental tests have been performed and the outcomes have been explained and discussed. Based on the results of this study, values for immediate recovery, creep recovery and irrecoverable creep strain are determined and proposed. In addition, typical creep and creep recovery design charts have been developed and presented for practical applications in structural engineering.
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