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Conditions to induce water repellency in soils with dimethyldichlorosilane
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.
Conditions to induce water repellency in soils with dimethyldichlorosilane
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.
Conditions to induce water repellency in soils with dimethyldichlorosilane
S H Y Ng (author) / S D N Lourenço
Géotechnique ; 66
2016
Article (Journal)
French
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