SYMPOSIA PAPER Published: 01 January 1980
STP36091S

An Approach to Link Shrinkage and Creep of Hardened Cement Paste by a New Evaluation Method

Source

It is shown that creep velocity is proportional to that part of swelling or shrinkage which is caused by a change in particle distance. To prove this it has been outlined first that shrinkage and swelling are caused by two mechanisms: (1) expansion or contraction of gel particles due to a change in surface energy, and (2) an expansion or contraction of the whole structure, that is, a change in particle distance. Both effects can be distinguished from one another, because they are dominant in the respective region of water vapor pressure. Finally, creep velocity is also dependent on the water content. It is raised in the upper water vapor pressure region where particle distances are enlarged too. The theoretical explanation is made by adopting the “Munich Model” for describing hardened cement paste.

Author Information

Setzer, MJ
Abteilung Werkstoffphysik im Baustoffinstitut der Technischen Universität München, München, West Germany
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Details
Developed by Committee: E06
Pages: 584–592
DOI: 10.1520/STP36091S
ISBN-EB: 978-0-8031-4768-3
ISBN-13: 978-0-8031-0325-2