Effect of nanosilica type on mechanical behavior of soil-cement

Reza Kiarostami¹ Milad Tajdini² Taleb Kazemi sheikhzahedi³

1) Ms.C hydraulic structure engineering Khatam Alanbia
2) .Ph.D. in Geotechnical engineering Tabriz university
3) Ms.C. Transportation engineering IAU South Tehran Branch

Publication : 2nd International Conference on Recent Advances in Engineering, Innovation and Technology - Belgium(eitconf.com)
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 and making dense and durable composition with low permeability and abrasion resistant. Since most of the recent researches are focused on the addition of nano-SiO2 on concrete, in this paper it has been attempted to use nano-SiO2 particles in soil-cement and observe the effects. Due to the fact that in concrete there are no particles passing sieve 200 and this restriction does not apply to soil-cements, some tests were carried out on the nano-SiO2 + soil-cement matrix because of the meaningful difference between concrete and soil-cement. The test procedure consists of moisture-dry density and unconfined compressive test. In these tests, silica fume (with specific surface area of 21 m2/g), nano-SiO2 (with specific surface area of 200 and 380 m2/g) were added to soil-cement.
Keywords : Keywords: Compaction Test Nano-SiO2 Uniaxial Compression Test Soil-cement.