Evaluation of the wettability of mortar component granular materials through contact angle measurements

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Nayara S. Klein
  • Jörg Bachmann
  • Antonio Aguado
  • Berenice Toralles-Carbonari

External Research Organisations

  • Universitat Politècnica de Catalunya
  • Universidade Estadual de Londrina
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Details

Original languageEnglish
Pages (from-to)1611-1620
Number of pages10
JournalCement and concrete research
Volume42
Issue number12
Publication statusPublished - Dec 2012

Abstract

The wettability of granular materials has a direct effect on the workability of pastes, mortars and concretes containing such materials. Given this, the wetting behaviour of two Portland cements, two mineral admixtures (limestone filler and silica fume) and different sand types (siliceous, limestone and granite) was evaluated through the measurement of the contact angle between these materials and water. The results show that all the materials possess high wettability. A chemical agent, dichlorodimethylsilane, was used to modify the surface properties of a 0-1 mm siliceous sand, making it more hydrophobic and, therefore, unable to be spontaneously wetted by water. The properties of a mortar produced with the silane-treated sand were evaluated, showing improvements on workability as a result of the chemical treatment.

Keywords

    Contact angle, Mortar (E), Workability (A)

ASJC Scopus subject areas

Cite this

Evaluation of the wettability of mortar component granular materials through contact angle measurements. / Klein, Nayara S.; Bachmann, Jörg; Aguado, Antonio et al.
In: Cement and concrete research, Vol. 42, No. 12, 12.2012, p. 1611-1620.

Research output: Contribution to journalArticleResearchpeer review

Klein NS, Bachmann J, Aguado A, Toralles-Carbonari B. Evaluation of the wettability of mortar component granular materials through contact angle measurements. Cement and concrete research. 2012 Dec;42(12):1611-1620. doi: 10.1016/j.cemconres.2012.09.001
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N1 - Funding information: We thank the Institute of Building Materials at Leibniz Universität Hannover and Prof. Dr.-Ing. Ludger Lohaus for the laboratory assistance provided. For financial support, we thank the AGAUR Agència de Gestió d'Ajuts Universitaris i de Recerca (Agency of Scholarship Management and Research) of the government of Catalonia and the Ministry of Science and Innovation of the government of Spain through the project BIA2010-20913-C02-02 . A special thank you goes to Susanne Woche and Stephan Sass for their invaluable help.

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