Discussion of the paper “volume change on first drying of hydrated portland cement with and without admixtures” by R. F. Feldman and E. G. Swenson
✍ Scribed by Dudley R. Morgan
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 239 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0008-8846
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✦ Synopsis
Feldman and Swenson (I) have presented an interesting paper on the effects of various chemical admixtures on volume change characteristics of portland cement paste specimens. They have noted the ability of certain chemical admixtures (e.g. calcium lignosulphonate, salt of a hydroxy carboxylic acid and triethanolamine) to increase the drying shrinkage of portland cement paste specimens. Further, they consider that this influence is restricted to the first desorption cycle, i.e. the volume change characteristics subsequent to first drying are similar for further adsorption and desorption cycles, irrespective of the presence of an admixture. * CCR 5, 25 (1975).