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Effect of maturation time on the fresh and hardened properties of an air lime mortar / H. Paiva in Cement and concrete research, Vol. 40 N° 3 (Mars 2010) 

Public ISBD [article]  in Cement and concrete research > Vol. 40 N° 3 (Mars 2010) . - pp. 447–451 Titre : Effect of maturation time on the fresh and hardened properties of an air lime mortar Type de document : texte imprimé Auteurs : H. Paiva, Auteur ; A. Velosa, Auteur ; R. Veiga, Auteur Année de publication : 2012 Article en page(s) : pp. 447–451 Note générale : Bibliogr. Langues : Anglais (eng) Mots-clés : Lime  ;  Mortar  ;  Rheology  ;  Maturation Résumé : The restoration and maintenance of old renders is one of the key aspects of correct rehabilitation practice. The ideal course of action is to replace the damaged material by a material with compatible characteristics. This work aims to analyze the effect of the maturation process on hardened state characteristics of hydrated powder lime mortars. The rheological characterization shows an air lime mortar thickening behaviour with the length of the test. The different mixes were subjected to a maturation process consisting on keeping them in the fresh state, covered with water, isolated from CO2, during seven days. The specimens and applications were prepared both with the non-matured and the matured mortars. Maturation seems to influence the hardened state characteristics causing a decrease in the capillary values, and an increase on the mechanical strength, which are more evident for mortars with higher binder contents. En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609002580 [article] Effect of maturation time on the fresh and hardened properties of an air lime mortar [texte imprimé] / H. Paiva, Auteur ; A. Velosa, Auteur ; R. Veiga, Auteur . - 2012 . - pp. 447–451. Bibliogr. Langues : Anglais (eng) in Cement and concrete research > Vol. 40 N° 3 (Mars 2010) . - pp. 447–451 Mots-clés : Lime  ;  Mortar  ;  Rheology  ;  Maturation Résumé : The restoration and maintenance of old renders is one of the key aspects of correct rehabilitation practice. The ideal course of action is to replace the damaged material by a material with compatible characteristics. This work aims to analyze the effect of the maturation process on hardened state characteristics of hydrated powder lime mortars. The rheological characterization shows an air lime mortar thickening behaviour with the length of the test. The different mixes were subjected to a maturation process consisting on keeping them in the fresh state, covered with water, isolated from CO2, during seven days. The specimens and applications were prepared both with the non-matured and the matured mortars. Maturation seems to influence the hardened state characteristics causing a decrease in the capillary values, and an increase on the mechanical strength, which are more evident for mortars with higher binder contents. En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609002580