Cement mortars with fly ash and slag - study of their microstructure and resistance to salt ingress in different environmental conditions

Author(s): M.A. Climent, J.M. Ortega, I. Sánchez
Paper category: Conference
Book title: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR)
Editor(s): M.G. Alexander, H.-D. Beushausen, F. Dehn, P. Moyo
Print ISBN: 978-0-415-89952-9
Publisher: Taylor & Francis Group
Pages: 126 – 127
Total Pages: 2
Language: English

Abstract: 
Several laboratory researches suggest the incorporation of active additions (fly ashes, blast furnace slags, etc.) to concrete, as a useful means of improving the resistance of concrete to salt ingress. Nevertheless, it must be taken into account that concretes with active additions are far more sensible to the quality of curing than OPC concretes. Then, the objective of this research is to contribute to the knowledge of the durability of cement mortars with active additions exposed to two environmental conditions representative of Mediterranean and mild Atlantic climates. The microstructure of the cement mortars was assessed by mercury intrusion porosimetry, and by impedance spectroscopy. Their resistance to salt ingress was quantified in terms of parameters directly related to the relevant ingress and transport mechanisms. As a preliminary conclusion, cements with slag and fly ash, hardened under conditions of Atlantic and Mediterranean climates, can have good service properties in the long term.

Online publication: 2014
Publication Type: abstract_only
Public price (Euros): 0.00