THERMAL ACCELERATION OF PORTLAND CEMENT CONCRETES USING DIRECT ELECTRONIC CURING

Accelerated curing of concrete with electricity is frequently used in the precast concrete industry. It is vital that the consequences of using different direct electrical curing regimes on both short- and long-term compressive strengths are comprehended. In this investigation, various heating regimes involving differing maximum temperatures and delay periods were used, and they demonstrated a range of compressive strengths. The results showed that the maximum temperature, the delay period before heating commences, and the water-cement ratio (w/c) govern the early strength gain that can be achieved by the use of direct electric curing. It was also noticed that the electrical resistance of the electrically cured concrete immediately prior to testing could be used to predict compressive strength at various ages.

Record URL:
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
Corporate Authors:
American Concrete Institute (ACI)

38800 Country Club Drive
Farmington Hills, MI United States 48331
Authors:
- Heritage, I
- Khalaf, F M
- Wilson, J G
Publication Date: 2000-1

Language

English

Media Info

Features: Figures; References; Tables;
Pagination: p. 37-40
Serial:
- ACI Materials Journal
- Volume: 97
- 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: Accelerating agents; Compressive strength; Concrete curing; Curing agents; Electricity; Heating (Structures); Portland cement concrete; Precast concrete; Resistance (Electricity); Temperature; Water cement ratio
Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

Accession Number: 00792320
Record Type: Publication
Contract Numbers: CMS-9413725
Files: TRIS
Created Date: May 11 2000 12:00AM