Journal
GEOTECHNIQUE
Volume 66, Issue 5, Pages 441-444Publisher
ICE PUBLISHING
DOI: 10.1680/jgeot.15.T.025
Keywords
geosynthetics; ground improvement; particle-scale behaviour; sands
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Dimethyldichlorosilane has been used as a hydrophobising agent for various applications, one of which is the treatment of soils. In geotechnical engineering, synthetic water-repellent soils can be used in barriers or ground improvement because of their wettability properties. This note examines the effect of dimethyldichlorosilane concentration on the soil type and time-dependent effects by means of contact angles measurements using the sessile drop method. The results reveal that the presence of organic matter, residual water and other non-mineral matter hinders the effectiveness of the treatment. Treated clean soil particle surfaces from crushed rocks achieve an immediate and high degree of water repellency.
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