Ultra-lightweight concrete : conceptual design and performance evaluation

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

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)
20 Downloads (Pure)


The present study presents a methodology to design ultra-lightweight concrete that could be potentially applied in monolithic concrete structures, performing as both load bearing element and thermal insulator. A particle grading model is employed to secure a densely packed matrix, composed of a binder and lightweight aggregates produced from recycled glass. The developed ultra-lightweight concrete, with a dry density of about 650–700 kg/m3, shows excellent thermal properties, with a thermal conductivity of about 0.12 W/(m K); and moderate mechanical properties, with a 28-day compressive strength of about 10–12 N/mm2. Furthermore, the developed concrete exhibits excellent resistance against water penetration.
Original languageEnglish
Pages (from-to)18-28
JournalCement & Concrete Composites
Publication statusPublished - 2015


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