Saulick, Y;
Lourenco, SDN;
Baudet, BA;
(2018)
Engineering water repellency in granular solids.
In:
Proceedings of the 7th International Conference on Unsaturated Soils (UNSAT2018).
ISSMGE (International Society for Soil Mechanics and Geotechnical Engineering): London, UK.
Preview |
Text
2-21.UNSAT2018_079.pdf - Accepted Version Download (521kB) | Preview |
Abstract
The use of water repellent granular solids such as soils is an innovative technology for use in applications such as water tight barriers. Synthesising such solids generally necessitate the exclusive use of chemical treatments with little consideration given to the physical characteristics of the solids. This paper summarises the theoretical framework of surface wettability and contact angle by illustrating the classic models developed. The wettability of 3 isolated sieve fractions of a sand was investigated after treatment with dimethyldichlorosilane (DMDCS). The largest contact angle (measured by the sessile drop method) was achieved with the finest fraction (63-212 μm). Comparison between a flat microscope slide treated with DMDCS and the 63-212 μm fraction showed that the sand had a significantly larger contact angle (a maximum difference of 20°). This difference was attributed to the particle characteristics which includes particle size, particle shape and surface roughness. The results of the study hint at the possible usage of the physical characteristics of soils in an engineering context to control water repellency.
| Type: | Proceedings paper |
|---|---|
| Title: | Engineering water repellency in granular solids |
| Event: | 7th International Conference on Unsaturated Soils, UNSAT2018 |
| Location: | Hong Kong |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://issmge.org/events/the-7th-international-co... |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10160226 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
