Water absorption in internally cured mortar made with water-filled lightweight aggregate / Ryan Henkensiefken in Cement and concrete research, Vol. 39 N° 10 (Octobre 2009)  

Public ISBD [article]  inCement and concrete research > Vol. 39 N° 10 (Octobre 2009) . - pp. 883–892 Titre : Water absorption in internally cured mortar made with water-filled lightweight aggregate Type de document : texte imprimé Auteurs : Ryan Henkensiefken, Auteur ; Javier Castro, Auteur ; Dale Bentz, Auteur Année de publication : 2009 Article en page(s) : pp. 883–892 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Interfacial transition zone  Internal curing  Lightweight aggregate  Sorptivity Index. décimale : 691 Matériaux de construction. Pièces et parties composantes Résumé : The increased propensity for shrinkage cracking in low water-to-cement ratio (w/c) concrete has inspired the development of new technologies that can reduce the risk of early-age cracking. One of these is internal curing. Internal curing uses saturated lightweight aggregate to supply ‘curing water’ to low w/c paste as it hydrates. Significant research has been performed to determine the effects of internal curing on shrinkage and stress development; however, relatively little detailed information exists about the effects of internal curing on fluid transport properties such as water absorption or diffusivity. This study examines the absorption of water into mortar specimens made with saturated lightweight aggregates (SLWA). These results indicate that the inclusion of SLWA can reduce the water absorption of mortar specimens. This observation was reinforced with electrical conductivity measurements that exhibited similar reductions. DEWEY : 620.13 ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609001392 [article] Water absorption in internally cured mortar made with water-filled lightweight aggregate [texte imprimé] / Ryan Henkensiefken, Auteur ; Javier Castro, Auteur ; Dale Bentz, Auteur . - 2009 . - pp. 883–892. Génie Civil Langues : Anglais (eng) in Cement and concrete research > Vol. 39 N° 10 (Octobre 2009) . - pp. 883–892 Mots-clés : Interfacial transition zone  Internal curing  Lightweight aggregate  Sorptivity Index. décimale : 691 Matériaux de construction. Pièces et parties composantes Résumé : The increased propensity for shrinkage cracking in low water-to-cement ratio (w/c) concrete has inspired the development of new technologies that can reduce the risk of early-age cracking. One of these is internal curing. Internal curing uses saturated lightweight aggregate to supply ‘curing water’ to low w/c paste as it hydrates. Significant research has been performed to determine the effects of internal curing on shrinkage and stress development; however, relatively little detailed information exists about the effects of internal curing on fluid transport properties such as water absorption or diffusivity. This study examines the absorption of water into mortar specimens made with saturated lightweight aggregates (SLWA). These results indicate that the inclusion of SLWA can reduce the water absorption of mortar specimens. This observation was reinforced with electrical conductivity measurements that exhibited similar reductions. DEWEY : 620.13 ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609001392

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