INFLUENCE OF SLAG CEMENT ON THE FROST RESISTANCE OF CONCRETE-A THEORETICAL ANALYSIS
The report is an attempt to theoretically analyse the effects of the cement type on the frost resistance of concrete. The main aim is to illustrate all possible changes in the frost resistance that might occur when ordinary portland cement is exchanged for a slag cement. Two main problems are treated: early freezing of the green concrete; and freezing of the mature concrete. In both cases the mechanisms of frost destruction are treated in detail whereby the influence of structural characteristics of the cement paste and the influence of the cinetics of cement hydration are elucidated, and in some cases quantified. The report does also give suggestions for a test programme by which the potential effect of a certain cement on the frost resistance of the green and mature concrete can be evaluated. Finally, the report contains a very limited review of the literature on frost resistance of mature slag cement concrete indicating that the effect of cement is rather small, once the air-content of the concrete is sufficiently high. Early freezing of slag cement concrete is not studied very much. It should, however, be a more serious problem than for portland cements due to the slower reaction rates and lower heat of hydrations that are characteristic of most slag cements. (Authors)
Louisiana Department of Transportation and Development1201 Capitol Access Road, P.O. Box 94245
Baton Rouge, LA USA 70804-9245
- Fagerlund, G
- Publication Date: 1980
- Features: Figures; References;
- Pagination: 86 p.
- TRT Terms: Air content; Concrete; Freezing; Frost susceptibility; Heat of hydration; Hydration; Slag cement
- Subject Areas: Highways; Materials; I32: Concrete;
- Accession Number: 00324319
- Record Type: Publication
- Report/Paper Numbers: Tech Rpt.
- Files: TRIS, STATEDOT
- Created Date: Apr 15 1981 12:00AM