• Pournami suradh
• Shyla Joseph A

In developing countries, there are several types of road failures such as potholes, cracks, base failure, wash out etc. Poor subgrades are found to be failed under repeated traffic and presence of heavy loads. Ideally the pavement subgrade should be strong enough to resist shoving, rutting excessive settlement and sufficiently stiff to reduce deflection. Nano technology can be effectively used as a preventive engineering solution in the pavement construction. This work deals with the study of effect of adding nano-silica on geotechnical properties of weak subgrade soil like Kuttanadu clay. Initial properties of clay is determined. The variation in Atterberg limits, MDD of soil, UCS and CBR strength properties of soil when adding different percentages of nano material were also studied. The optimum percentage of nano silica is found to be 10%. By adding 10% nano silica in Kuttanadu clay in its natural state, the strength is observed to be increased by 223%. As the plasticity index is reduced by 15%, the compressibility of soil is also reduced significantly. CBR value of 4% is obtained in its natural moisture content.

Effective Utilization of Nano Material in Subgrade Soil for Pavements

"Effective Utilization of Nano Material in Subgrade Soil for Pavements", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.418-421, May 2019, Available :http://www.jetir.org/papers/JETIRCV06091.pdf

"Effective Utilization of Nano Material in Subgrade Soil for Pavements", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp418-421, May 2019, Available at : http://www.jetir.org/papers/JETIRCV06091.pdf