• Karumanchi Meeravali
• Dr. Kodi Rangaswamy

ABSTRACT: Expensive soils denote clayey soils that not only possess the tendency to increase or decrease in volume (compressibility) when the prevailing moisture condition is allowed to change but also measure of the ability of a soil media to support the formation of a magnetic field within itself(permeability). Such change of moisture content of these soils can emanate from rains, floods or leakage of sewer lines. The response of expensive soil in form of compressibility and permeability due to change moisture content is frequently expressed superficially as heaving, settlement and piping (flow in stream lines) of lightly loaded geotechnical structures such as pavements, railways, roadways, channel and foundations or reservoir lining. This thesis is an experimental study evaluating the effect of nano-chemical on compressibility and permeability of expansive soil. The initial phase of the experimental program includes the study of the effect of nano-chemical on MDD (Maximum Dry Density) and optimum moisture content (OMC) with different percentages (by dry weight of the soil). The second phase of the experimental program focuses on Compressibility and Permeability characteristics of the soil. In addition to UCS tests were performed to study the effects of nano-chemical on unconfined compressive strength of tested soil. Test results indicated that addition of nano-chemical reduced the compressibility and increased the permeability of the soft soil with increasing nano-chemical with respective percentages. This project ventures to find the feasibility of using a Nano chemical as stabilizer for ground improvement and to find an optimum dosage of the stabilizer which ensures maximum strength, controlling compressibility and permeability characteristics. Different dosages of Terrasil (a Nano-chemical) will be injected into the soil samples collected. The compaction and unconfined compression (UCS) tests are to be conducted, followed by consolidation and permeability test to determine the soil characteristics of controlling compressibility and permeability. It is also planned to study the suitability of the Nano-chemical as a water resistant substance for improving the strength. From the data thus obtained, an optimum dosage of the Nano-chemical to be added for maximum efficiency is determined. Keywords: Terrasil, Nanotechnology, Nanochemicals, Soil microstructure

Keywords: Terrasil, Nanotechnology, Nanochemicals, Soil microstructure

"COMPRESSIBILITY AND PERMEABILITY CHARACTERISTICS OF NANO-CHEMICAL TREATED KUTTANAD SOFT-CLAY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 3, page no.615-620, March-2018, Available :http://www.jetir.org/papers/JETIR1803110.pdf

"COMPRESSIBILITY AND PERMEABILITY CHARACTERISTICS OF NANO-CHEMICAL TREATED KUTTANAD SOFT-CLAY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 3, page no. pp615-620, March-2018, Available at : http://www.jetir.org/papers/JETIR1803110.pdf