Comparing Lightweight Polystyrene Concrete Using Engineered or Waste Materials

This paper investigates 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 and the plastic state measures of consistency, air content, and unit weight are reported in this paper. The measures 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.

Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
Authors:
- Trussoni, Matthew
- Hays, Carol D
- Zollo, Ronald F
Publication Date: 2012

Language

English

Media Info

Media Type: Digital/other
Features: Figures; Photos; References; Tables;
Pagination: pp 101-108
Serial:
- ACI Materials Journal
- Volume: 109
- Issue Number: 1
- Publisher: American Concrete Institute (ACI)
- ISSN: 0889-325X
- Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

TRT Terms: Admixtures; Aggregate mixtures; Air content; Compressive strength; Deflection; Fresh concrete
Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

Accession Number: 01363864
Record Type: Publication
Files: TRIS
Created Date: Feb 27 2012 9:37AM