Title: Understanding Lightweight Cellular Concrete Materials

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Publication: CIA

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Date: 2/13/2011

Abstract:
Lightweight cellular concrete materials can potentially provide many benefits to the construction industry, ranging from gross weight savings through to potentially faster construction using prefabricated elements and improved environmental performance. However, to maximise the benefits from such materials, both builders and designers need to develop an understanding of lightweight materials, and how they differ from traditional concrete. The discussions in this paper will draw on recent research into a range of load-bearing cellular mortars with medium densities in the range of 1400–1600 kg/m3. The paper describes the critical interrelationships between density, moisture and strength, which will become a key consideration in specifying such materials. In addition, the influence of curing history on product properties will be discussed in relation to how such products can be manufactured as precast concrete elements.