Hostname: page-component-848d4c4894-m9kch Total loading time: 0 Render date: 2024-05-06T12:55:20.501Z Has data issue: false hasContentIssue false
  • English
  • Français

The Effect on Cement Mortar and Concrete by Admixture of Spray Drying Absorption Products

Published online by Cambridge University Press:  21 February 2011

Kirsten G. Jeppesen
Kirsten G. Jeppesen*
Affiliation:
The Insitute of Mineral Industry, The Technical University of Denmark, DK 2800, Lyngby
Get access

Abstract

Spray dried absorption products (SDA) having special characteristics are used as substitutes for cement in the preparation of mortars; the qualities of the resulting mixed mortars are described. Conditions are described for mortar mixes, data for which were presented at the MRS Fall Meeting 1987.

The influence of the composition of the SDA on water requirement and setting time has been studied. A full scale project involving 3 precast, reinforced concrete front-elements containing 20 and 30 wt.% SDA is described. Strength development, mineralogical composition and corrosion were monitored for two years.

A non-standard freeze-thaw experiment was performed which compares mortars containing SDA and fly ash (FA) and also shows the effect of superplasticizer.

The possibility of improving the SDA by grinding has been tested and a limited improvement has been found. The strength of the mixed mortars seems slightly influenced by the grain size of SDA

Gypsum (CaSO4·2H2O), synthetic calcium-sulphite (CaSO3·½H2O) and 2 SDAs have been used as retarders for cement clinker. Mortar test prisms have been cast and comparative strengths after curing for 3 years are reported

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 178: Symposium W – Fly Ash and Coal Conversion By-Products VI , 1989 , 267
Copyright
Copyright © Materials Research Society 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Jeppesen, K.G., in Fly Ash and Coal Conversion By-Products: Characterization. Utilization and Disposal IV, edited by McCarthy, G.J., Glasser, F.P., Roy, D.M. and Hemmings, R.T., Mat. Res. Soc. Symp. Proc., Vol 113 (Materials Research Society, Pittsburgh, PA, 1988), pp 187–198 Google Scholar
2. Winkler, T., Durability of Concrete Containing Endproduct from SDA Flu Gas Desulphurization, Education report, The Academy of Technical Sciences, EF 117, 111 pp (1985)Google Scholar
3. Jeppesen, K.G., Affaldshaandtering og Anvendelse. Langtidsvirkning pa beton ved iblanding af Afsvovlingsprodukter., The Institute of Mineral Industry, DTH 89 pp (1989)Google Scholar