Abstract
AbstractAround a decade ago, the first realistic mix of infra lightweight concrete (ILC) was developed and used in the construction of the façades of a family house in Berlin. Since then, it has been demonstrated that ILC represents a promising lightweight concrete material of dry density less than 800 kg/m3 and possesses both good thermal insulation characteristics and a sufficient load bearing resistance. Such a unique combination makes it a competitive alternative to the conventional multilayer façades common nowadays in terms of robustness, durability, energy saving and ease of construction. In addition, it opens up innovative architectural horizons. The chief aim of this review is to present the current state of knowledge and the development of ILC over the last decade. A further and equally important consideration is to shed light on scientific gaps and issues that require additional investigation. Accordingly, wide comparisons between numerous mixes as to ingredients, density, strength and thermal conductivity are conducted. The review shows how the mechanical and thermal properties of ILC have improved considerably over time. It also reveals, however, how the understanding of the structural behavior of ILC could be improved through further discussions.
Highlights
Discussion on this paper must be submitted within two months of the print publication
The chief aim of this review is to present the current state of knowledge and the development of infra lightweight concrete (ILC) over the last decade
The major findings of this survey can be summarized as follows: ACKNOWLEDGMENT The authors would like to express their gratitude to the Deutscher Akademischer Austauschdienst (DAAD) for their regular support
Summary
Discussion on this paper must be submitted within two months of the print publication. (b) flexibility, since one single layer provides both bearing and insulation, no need for plastering or cladding is required and it can be cast in situ or as a precast element and (c) sustainability that is gained by such a monolithic structure with easy maintenance, recycling ability and energy saving. In this context, 50 cm wall thickness has been proven by many researchers to meet the insulation criteria and to provide a sufficient bearing resistance [13,14,18,19,22]. The developed ILC has a dry density of 760 kg/m3, a mean cube compressive strength of 7 MPa and a thermal conductivity of 0.18 W m−1 K−1
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