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Sorptivity of concrete as an indicator of laboratory freeze-thaw scaling performance



Author(s): S.E. Chidiac, D.K. Panesar
Paper category: Workshop
Book title: International RILEM Workshop on Performance Based Evaluation and Indicators for Concrete Durability
Editor(s): V. Baroghel-Bouny, C. Andrade, R. Torrent, K. Scrivener
ISBN: 978-2-912143-95-2
Pages: 59 - 66
Total Pages: 8
Language: English


Abstract: 
An experimental study was conducted to evaluate sorptivity measurements as performance indicators of the MTO LS-412 freeze-thaw de-icer salt scaling test. Measurements were taken on the finished surface and the formed surface of non-air entrained, dry cast concrete containing 0 to 60% ground granulated balst furnace slag (GGBFS) as cement replacement. This study reveals that water sorptivity and 3% NaCl sorptivity coefficients are not good indicators of laboratory scaling performance. However, applying the absolute difference between the two sorptivity coefficients, water and 3%NaCl, referred to as ionic sorptivity is proposed as it corresponds to the scaling acceptance value of 0.002 mm/min.⁰˙⁵ for the ionic sorptivity is proposed as it corresponds to the scaling acceptance limit of 0.8 kg/m² specified by OPSS 1531.


Online publication: 2007
Publication Type: full_text
Public price (Euros): 0.00