Influence of cement type, air-entrained admixture and hydration stabilizing admixture on mortars’ setting time
Auteur(s): |
Juliana Pippi Antoniazzi
Gihad Mohamad Juliana Machado Casali |
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Médium: | article de revue |
Langue(s): | portuguais |
Publié dans: | Revista IBRACON de Estruturas e Materiais, 2021, n. 1, v. 14 |
DOI: | 10.1590/s1983-41952021000100014 |
Abstrait: |
Ready mix mortar is a ready to use mixture that uses hydration stabilizing (HSA) and air-entrained (AEA) admixtures in its composition, which modify its properties, especially the setting times. HSA extends the setting time of mortars for a long period, while AEA promotes a greater workability to the mixture. The study determined the temperature of the mortars with the evaluation of the setting times obtained by a semi-adiabatic calorimeter. Two types of cement (CPII-F-40 e CPII-Z-32) and varied contents of HSA (0.0%, 0.6% e 0.9%) and AEA (0.0%, 0.2% e 0.4%) were used. The results showed that the use of HSA decreased the amplitude of the temperature peaks and increased the setting times with cement CPII-Z-32 in relation to cement CPII-F-40. The setting time of the mortars was influenced by the type of cement used and by the contents of the admixtures. |
License: | Cette oeuvre a été publiée sous la license Creative Commons Attribution 4.0 (CC-BY 4.0). Il est autorisé de partager et adapter l'oeuvre tant que l'auteur est crédité et la license est indiquée (avec le lien ci-dessus). Vous devez aussi indiquer si des changements on été fait vis-à-vis de l'original. |
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10536272 - Publié(e) le:
01.01.2021 - Modifié(e) le:
02.06.2021