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Effect of the way of air-entraining and water cement ratio on air-void characteristics of hardened concrete



Title: Effect of the way of air-entraining and water cement ratio on air-void characteristics of hardened concrete
Author(s): Y. Shang, J. Liu, Q. Ran
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: 183 - 188
Total Pages: 6
Nb references: 2
Language: English


Abstract: The advanced air void analyzer (MIC-840-01) was used to study the effects of airentraining and water to cement ratio (w/c) on the characteristics of air void in hardened concrete. The results show that air-entraining and w/c make significant effects on spacing factor, mean air void diameter, specific air void area and air void size distribution in hardened concrete. As w/c increases, the spacing factor in hardened concrete increases and the characteristics of air void become worse even though there have the same air contents in fresh concrete, which will influence the frost resistance of concrete. On the other hand, when w/c and the air in fresh concrete are uniform, the air and spacing factor in harden concrete are variant by different air-entraining.


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