Effects of Silica Product Types on Hydraulic conductivity of the Nano-Soil-Cement
Publish place: Second International Congress of Civil Engineering, Architecture, Building Materials and Environment
Publish Year: 1401
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CAUCONG02_005
تاریخ نمایه سازی: 19 آذر 1401
Abstract:
Soil cement is a mixture of Portland cement, soil and water, in which hydration of cement and compaction causes the materials’ constituents to bond together making a dense and durable composition with low permeability and abrasion resistant. Since most of the recent researches are focused on the addition of nano-SiO۲ on concrete, in this paper it has been attempted to use nano-SiO۲ particles in soil-cement and observe the effects. Due to the fact that in concrete there are no particles passing sieve ۲۰۰ and this restriction does not apply to soil-cements, some tests were carried out on the nano-SiO۲ + soil-cement matrix because of the meaningful difference between concrete and soil-cement. The test procedure consists of moisture-dry density. In these tests, silica fume (with specific surface area of ۲۱ m۲/g), nano-SiO۲ (with specific surface area of ۲۰۰ and ۳۸۰ m۲/g) were added to soil-cement. The results show that adding certain amounts of nano-SiO۲ particles to the soil-cement with various types of silica products can improve the hydraulic conductivity of soil cement.
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Authors
Milad Tajdini
Ph.D. Geotechnical Engineering
Shahab Taheri
Ms.C in Mechanical engineering, KNTU
Maryam Dorfaki
Bs.C. Islamic Azad University Roodehen