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Revised view on chemical shrinkage



Title: Revised view on chemical shrinkage
Author(s): S. Zhutovsky, K. Kovler
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 775 - 784
Total Pages: 10
Nb references: 17
Language: English


Abstract: Extensively studied, chemical shrinkage is considered to be an intrinsic property of Portland cement. It is generally assumed to be proportional to degree of hydration, since it has its origin in the hydration reaction stoichiometry. Furthermore, generally accepted point of view is that chemical shrinkage is independent of water/cement (w/c) ratio. The new representation and interpretation of the chemical shrinkage of hydrating cement paste is given in the paper. The chemical shrinkage of cement pastes with w/c ratios of 0.45, 0.33, 0.25 and 0.21 was tested by weighing-in-water method. The degree of hydration of the pastes was examined by thermogravimetric analyzer (TGA). Finally, the effect of water/cement ratio on chemical shrinkage of hydrating cement paste was demonstrated and compared with the literature data.


Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00