High-Volume Fly Ash Concrete: Analysis and Application

Although fly ash as a partial replacement for cement has been utilized for many years, it has been almost exclusively used in low-volume percentages, such as 10 or 20% cement replacement. This paper looks at high-volume percentage replacements from 40 to 70%. A minimix study revealed that 50 and 60% cement replacement percentages were the best candidates for full-scale testing. The environmental benefits included a 25% reduction in smog, human health effects, and fossil fuel use compared to the same element built with a 100% Portland cement mix. The economic benefits included a 15% capital cost reduction and a 20% life-cycle cost reduction when compared with a 100% Portland cement mix. Full-scale testing included a complete mix design in addition to the construction of four concrete infrastructure products. The products built included an alley panel and curb and gutter sections in the City and County of Denver, a precast manhole and lid, and a twin-tee prestressed girder.

Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/10840680
Authors:
- Reiner, Mark
- Rens, Kevin
Publication Date: 2006-2

Language

English

Media Info

Media Type: Print
Features: Figures; Photos; References; Tables;
Pagination: pp 58-64
Serial:
- Practice Periodical on Structural Design and Construction
- Volume: 11
- Issue Number: 1
- Publisher: American Society of Civil Engineers
- ISSN: 1084-0680
- Serial URL: http://ascelibrary.org/loi/ppscfx

Subject/Index Terms

TRT Terms: Cement content; Curbs; Economic benefits; Environmental impacts; Fly ash; Girders; Life cycle costing; Manholes; Mix design; Portland cement concrete
Uncontrolled Terms: Cement replacement materials
Geographic Terms: Colorado
Subject Areas: Economics; Environment; Finance; Highways; Materials; I32: Concrete;

Filing Info

Accession Number: 01018998
Record Type: Publication
Files: TRIS
Created Date: Feb 24 2006 4:41PM