Influence of cement type and water content on the fresh state properties of ready mix mortar

Influence of cement type and water content on the fresh state properties of ready mix mortar

The main characteristic of ready mix mortar is to remain workable for up to 72 hours after mixing. This greater duration of workability is obtained by use of hydration stabilizing admixtures and air-entrained admixtures. Thus, the behavior of this mortar depends on the compatibility between Portland...

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Main Authors: Casali, Juliana Machado, Melo, Fernanda Domingues, Serpa, Vitoria Carminatti, Oliveira, Alexandre Lima de, Betioli, Andrea Murillo, Calçada, Luciana Maltez Lengler
Format: Online
Language:eng
Published: ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2018
Online Access:https://seer.ufrgs.br/ambienteconstruido/article/view/72022
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spelling ojs-article-720222019-01-08T18:41:31Z Influence of cement type and water content on the fresh state properties of ready mix mortar Casali, Juliana Machado Melo, Fernanda Domingues Serpa, Vitoria Carminatti Oliveira, Alexandre Lima de Betioli, Andrea Murillo Calçada, Luciana Maltez Lengler ready mix mortar; rendering mortar; admixtures The main characteristic of ready mix mortar is to remain workable for up to 72 hours after mixing. This greater duration of workability is obtained by use of hydration stabilizing admixtures and air-entrained admixtures. Thus, the behavior of this mortar depends on the compatibility between Portland cement and these two admixtures. Within this context, the objective of this article is to evaluate the influence of Portland cement type and water content on the properties of ready mix mortars in fresh state. Three types of Portland cement and four water/dry material ratios were evaluated. The produced mortars were analyzed with respect to their properties in fresh state: consistency index, specific gravity, air entrained content and rheological behavior by squeeze-flow. The properties were determined for three storage durations (0, 24 and 48 hours). The results show that both types of cement (mainly, the rheological behavior) and water content (mainly, the air entrained content, consistency and rheological behavior) influenced the ready mix mortar properties. Therefore, these two parameters must be evaluated for mortar dosages in order to obtain the required properties in fresh state. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído Federal Institute of Science and Technology Education of Santa Catarina (IFSC) by EDITAL Nº 03/2016/PROPPI 2018-06-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://seer.ufrgs.br/ambienteconstruido/article/view/72022 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 33-52 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 33-52 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 33-52 1678-8621 1415-8876 eng https://seer.ufrgs.br/ambienteconstruido/article/view/72022/48341 Direitos autorais 2018 Ambiente Construído https://creativecommons.org/licenses/by/4.0
institution Universidade Federal do Rio Grande do Sul
collection OJS
language eng
format Online
author Casali, Juliana Machado
Melo, Fernanda Domingues
Serpa, Vitoria Carminatti
Oliveira, Alexandre Lima de
Betioli, Andrea Murillo
Calçada, Luciana Maltez Lengler
spellingShingle Casali, Juliana Machado
Melo, Fernanda Domingues
Serpa, Vitoria Carminatti
Oliveira, Alexandre Lima de
Betioli, Andrea Murillo
Calçada, Luciana Maltez Lengler
Influence of cement type and water content on the fresh state properties of ready mix mortar
author_facet Casali, Juliana Machado
Melo, Fernanda Domingues
Serpa, Vitoria Carminatti
Oliveira, Alexandre Lima de
Betioli, Andrea Murillo
Calçada, Luciana Maltez Lengler
author_sort Casali, Juliana Machado
title Influence of cement type and water content on the fresh state properties of ready mix mortar
title_short Influence of cement type and water content on the fresh state properties of ready mix mortar
title_full Influence of cement type and water content on the fresh state properties of ready mix mortar
title_fullStr Influence of cement type and water content on the fresh state properties of ready mix mortar
title_full_unstemmed Influence of cement type and water content on the fresh state properties of ready mix mortar
title_sort influence of cement type and water content on the fresh state properties of ready mix mortar
description The main characteristic of ready mix mortar is to remain workable for up to 72 hours after mixing. This greater duration of workability is obtained by use of hydration stabilizing admixtures and air-entrained admixtures. Thus, the behavior of this mortar depends on the compatibility between Portland cement and these two admixtures. Within this context, the objective of this article is to evaluate the influence of Portland cement type and water content on the properties of ready mix mortars in fresh state. Three types of Portland cement and four water/dry material ratios were evaluated. The produced mortars were analyzed with respect to their properties in fresh state: consistency index, specific gravity, air entrained content and rheological behavior by squeeze-flow. The properties were determined for three storage durations (0, 24 and 48 hours). The results show that both types of cement (mainly, the rheological behavior) and water content (mainly, the air entrained content, consistency and rheological behavior) influenced the ready mix mortar properties. Therefore, these two parameters must be evaluated for mortar dosages in order to obtain the required properties in fresh state.
publisher ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate 2018
url https://seer.ufrgs.br/ambienteconstruido/article/view/72022
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