Effect of salt and water crystallization on the degradation of pore structure of cement mortars

Author(s): Alicja Wieczorek*, Marcin Koniorczyk, Piotr Konca, Francesco Pesavento, Dariusz Gawina
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 2
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN: 978-2-35158-200-8
e-ISBN: 978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 793-798
Total Pages: 6
Language : English

Abstract: The objective of this work is to investigate experimentally two deterioration mechanisms of concrete, frost-induced damage and salt crystallization in porous building materials. The damage of internal structure was analyzed for several types of mortar, with different content of the air-entraining admixture and the w/c ratio. The multi-cycle Mercury Intrusion Porosimetry was used to analyze the influence of both, i.e. Na2SO4 crystallization and frost induced-damage (after 0, 25, 50 and 100 freeze-thaw cycles), on the porous structure of mortars. In order to obtain the total porosity and pore size distribution caused by the material damage, two mercury intrusion-extrusion cycles were applied.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00