Influence of Air Temperature on the Performance of Different Water-Reducing Admixtures with Respect to the Properties of Fresh and Hardened Mortar
Joint Authors
Tochetto, Eduardo
Silva, Wilson Ricardo Leal
Damo, Gabriela
Oliveira, Alexandre Lima
Prudêncio, Luiz Roberto
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-11-30
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The performance of water-reducing admixtures used in concrete is affected by the weather conditions to which the concrete mixture is exposed.
The most used WRAs are lignosulfonate, naphthalene, and polycarboxylate.
However, they react differently to weather conditions, especially to air temperature.
Therefore, it can be useful to evaluate how temperature affects admixture performance.
In this study, the performance of three admixtures (naphthalene, lignosulfonate, and polycarboxylate) was evaluated at 15, 25, and 35°C by means of the flow table test, mixture air content, and compressive strength.
Moreover, mixture temperature was monitored and time-temperature curves were plotted in order to assess whether the admixtures affected cement hydration reactions at different temperatures.
The final results indicate that an increase in temperature leads to an increase in saturation dosage; lignosulfonate had the most pronounced retarding effect, followed by polycarboxylate, and finally, naphthalene, and considering the weather conditions in the area where the study was carried, the final finding would be that the naphthalene-based admixture had the best performance.
American Psychological Association (APA)
Silva, Wilson Ricardo Leal& Prudêncio, Luiz Roberto& Oliveira, Alexandre Lima& Damo, Gabriela& Tochetto, Eduardo. 2010. Influence of Air Temperature on the Performance of Different Water-Reducing Admixtures with Respect to the Properties of Fresh and Hardened Mortar. Advances in Civil Engineering،Vol. 2010, no. 2010, pp.1-10.
https://search.emarefa.net/detail/BIM-448595
Modern Language Association (MLA)
Silva, Wilson Ricardo Leal…[et al.]. Influence of Air Temperature on the Performance of Different Water-Reducing Admixtures with Respect to the Properties of Fresh and Hardened Mortar. Advances in Civil Engineering No. 2010 (2010), pp.1-10.
https://search.emarefa.net/detail/BIM-448595
American Medical Association (AMA)
Silva, Wilson Ricardo Leal& Prudêncio, Luiz Roberto& Oliveira, Alexandre Lima& Damo, Gabriela& Tochetto, Eduardo. Influence of Air Temperature on the Performance of Different Water-Reducing Admixtures with Respect to the Properties of Fresh and Hardened Mortar. Advances in Civil Engineering. 2010. Vol. 2010, no. 2010, pp.1-10.
https://search.emarefa.net/detail/BIM-448595
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-448595