Details
Original language | English |
---|---|
Pages (from-to) | 1611-1620 |
Number of pages | 10 |
Journal | Cement and concrete research |
Volume | 42 |
Issue number | 12 |
Publication status | Published - 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
- Engineering(all)
- Building and Construction
- Materials Science(all)
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In: Cement and concrete research, Vol. 42, No. 12, 12.2012, p. 1611-1620.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Evaluation of the wettability of mortar component granular materials through contact angle measurements
AU - Klein, Nayara S.
AU - Bachmann, Jörg
AU - Aguado, Antonio
AU - Toralles-Carbonari, Berenice
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.
PY - 2012/12
Y1 - 2012/12
N2 - 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.
AB - 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.
KW - Contact angle
KW - Mortar (E)
KW - Workability (A)
UR - http://www.scopus.com/inward/record.url?scp=84870001894&partnerID=8YFLogxK
U2 - 10.1016/j.cemconres.2012.09.001
DO - 10.1016/j.cemconres.2012.09.001
M3 - Article
AN - SCOPUS:84870001894
VL - 42
SP - 1611
EP - 1620
JO - Cement and concrete research
JF - Cement and concrete research
SN - 0008-8846
IS - 12
ER -