Effect of different expanded aggregates on the properties of lightweight concrete

Mohamed Abd Elrahman, Sang Yeop Chung, Dietmar Stephan

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


Lightweight aggregate concrete is a material which has much lower density than normal concrete and many advantages, including advanced insulation performance due to its highly porous or cellular characteristics. Several types of lightweight aggregates have been used to produce lightweight aggregate concrete, and the characteristics of such lightweight aggregates strongly affect the material properties. In this study, three different expanded materials - expanded glass (Liaver), expanded clay (Liapor) and foam glass (Ecoglas) - were utilised as lightweight aggregates, and their effects on the properties of lightweight concrete were investigated. These expanded lightweight aggregates are light and have lower thermal conductivity as well as water absorption than those of normal aggregates. Microstructural characteristics of the specimens with different types of aggregate were examined using X-ray micro-computed tomography. The thermal (thermal conductivity) and mechanical (compressive strength) properties of the lightweight concrete specimens were evaluated experimentally and numerically. The relationship between the physical properties and characteristics was analysed to demonstrate the effect of each expanded aggregate on lightweight aggregate concrete.

Original languageEnglish
Pages (from-to)95-107
Number of pages13
JournalMagazine of Concrete Research
Issue number2
Publication statusPublished - 2019 Jan 1

Bibliographical note

Publisher Copyright:
© 2018 ICE Publishing. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)


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