Comparing lightweight polystyrene concrete using engineered or waste materials

Matthew Trussoni, Carol DiLaurenzio Hays, Ronald F. Zollo

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The purpose of this study is to investigate the difference between using manufactured or waste-expanded polystyrene (EPS) as an aggregate replacement in concrete. Concrete mixture proportions are held constant, whereas two types of EPS-reground waste material (RGD) and manufactured spherical bead (BD)-replace a portion of the fine aggregate. The plastic state and hardened state properties are quantified and compared between test batches. The plastic state measures of consistency, air content, and unit weight are reported. The measured hardened state properties include compressive strength, elastic modulus, strength-weight ratio, and energy-related toughness as determined using compression load-deflection curves. The results indicate that, for comparable concrete mixtures, BD mixtures exhibited improved workability and reduced air entrapment or entrained air as compared to RGD mixtures due to differences in EPS particle surface characteristics. Furthermore, statistically significant increases in compressive strength and energy-related toughness are demonstrated for BD mixtures in comparison to RGD mixtures.

Original languageEnglish (US)
Pages (from-to)101-107
Number of pages7
JournalACI Materials Journal
Volume109
Issue number1
StatePublished - Jan 1 2012
Externally publishedYes

Keywords

  • Expanded polystyrene lightweight concrete
  • Hardened state properties
  • Manufactured spherical bead
  • Plastic state properties
  • Reground waste

ASJC Scopus subject areas

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

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