Measuring autogenous strain of concrete with corrugated moulds

Title: Measuring autogenous strain of concrete with corrugated moulds
Author(s): Q. Tian, O.M. Jensen
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: 1501 - 1511
Total Pages: 11
Nb references: 8
Language: English

Abstract: A reliable technique to quantify autogenous strain is a prerequisite for example to reliably carry out numerical modelling of stress build-up in high performance concrete. The introduction of a special kind of corrugated mould enables transformation of volume strain into linear strain for fluid concrete, which not only realizes continuous monitoring of the autogenous strain since casting, but also effectively minimizes the disturbance resulting from gravity, temperature variation and mould restraint on measuring results. Based on this measuring technique, this paper investigates the influence of material properties, entrapped air and size of the corrugated tube on the measuring results. The effect of bleeding water and measuring direction - horizontal or vertical - on the measurement results is also studied and the mechanism are discussed.

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

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