Effect of Adding Nano-Sio2 Particles and Silica Fume on the Physical Parameters of Soil-Cement Materials

Milad.tajdini¹ َAriz Zerahtanlahoni²

1) phd tabriz university
2) Ms.C. western university

Publication : 7th.International Conference on Researches in Science & Engineering & 4th.International Congress on Civil, Architecture and Urbanism in Asia(7icrsie.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 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-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, hydraulic conductivity. 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 : compaction test hydraulic conductivity nano sio2 soil ement uniaxial compression test