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Fluid transport in high volume fly ash mixtures with and without internal curing

Show simple item record De la Varga, Igor Spragg, Robert P. Di Bella, Carmelo Castro, Javier Bentz, Dale P. Weiss, Jason 2016-07-06T17:09:02Z 2016-07-06T17:09:02Z 2014
dc.identifier.citation Cement and Concrete Composites, 2014, vol. 45, p. 102–110
dc.description.abstract The transport of fluid and ions in concrete mixtures is central to many aspects of concrete deterioration. As a result, transport properties are frequently measured as an indication of the durability that a concrete mixture may be expected to have. This paper is the second in a series investigating the performance of high volume fly ash (HVFA) mixtures with low water-to-cementitious ratios (w/cm) that are internally cured. While the first paper focused on strength and shrinkage, this paper presents the evaluation of the transport properties of these mixtures. Specifically, the paper presents results from: rapid chloride migration (RCM), rapid chloride penetration test (RCPT), apparent chloride diffusion coefficient, surface electrical resistivity, and water absorption. The test matrix consisted of mortar samples with two levels of class C fly ash replacement (40% and 60% by volume) with and without internal curing provided with pre-wetted lightweight fine aggregates (LWA). These mixtures are compared to plain ordinary portland cement (OPC) mortars. The results indicate that HVFA mixtures with and without internal curing provide benefits in terms of reduced transport coefficients compared to the OPC mixtures
dc.language.iso en_US
dc.subject Transport properties
dc.subject High volume fly ash
dc.subject Internal curing
dc.subject Chloride
dc.subject Water absorption
dc.title Fluid transport in high volume fly ash mixtures with and without internal curing
dc.type Artículo

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