Design of ultra-lightweight concrete: towards monolithic concrete structures

Q. Yu, P.R. Spiesz, H.J.H. Brouwers

Research output: Contribution to journalArticleAcademic

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Abstract

This study addresses the development of ultra-lightweight concrete. A moderate
strength and an excellent thermal conductivity of the lightweight concrete are set as the design targets. The designed lightweight aggregates concrete is targeted to be used in monolithic concrete façade structure, performing as both load bearing element and thermal insulator. The developed lightweight concrete shows excellent thermal properties, with a low thermal conductivity of about 0.12 W/(m·K); and moderate mechanical properties, with 28-day compressive strengths of about 10—12 N/mm2. This combination of values exceeds, to the researchers’ knowledge, the performance of all other lightweight building materials. Furthermore, the developed lightweight concrete possesses excellent durability properties

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