Comparison of workability and mechanical properties of self-compacting lightweight concrete and normal self-compacting concrete

T. Y. Lo, P. W.C. Tang, H. Z. Cui, A. Nadeem

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Workability and mechanical properties of self-compacting lightweight concrete (SCLC) and normal self-compacting concrete (SCC) are compared. Slump flow tests, L-box tests, and test of compressive strength, modulus of elasticity, and concrete density are conducted. SCLC was made using less superplasticizer (SP) and viscosity modifying agent (VMA) and a lower water/binder ratio (w/b) than normal SCC. The bulk density was only 75% of normal SCC but with a similar compressive strength. Slump flow is the horizontal spread of the collapsed slump concrete in both length and width which denotes the flowability of concrete and provides a consistent quick indication of the workability of SCC. It is concluded that SCLC, with similar slump flow to that of SCC, can be mixed using less SP and VMA and a lower w/b to obtain similar flowability to that of SCC at a binder content. SCLC has a higher compressive strength than LC at the same w/b, while the modulus of elasticity for both SCLC and SCC increases with the binder content.

Original languageEnglish
Pages (from-to)16-17
Number of pages2
JournalMaterials Research Innovations
Volume11
Issue number1
DOIs
Publication statusPublished - Mar 1 2007
Externally publishedYes

Keywords

  • Mechanical properties
  • Self-compacting concrete
  • Self-compacting lightweight concrete
  • Workability

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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