Soil Stabilization Using Nano-materials

Soil Stabilization Using Nano-materials

The paper presents a study on stabilization of different types of soils using nano-chemicals. Nanochemicals are nanotechnology based products which can provide solutions to moisture and bonding issues in pavements. Addition of nanoparticles as an external factor to soil will result in soil manipulation at atomic or molecular level and it influences the strength, permeability indices and resistance properties of soil. Nanotechnology is a reformed mode which can address the rising concern of poor quality roads. This paper presents a case study of trial section along sector 19, Gandhinagar, Gujarat, where the field in situ densities, CBR and Benkelman Beam Deflection (BBD) analysis was carried out to determine the in situ stiffness of the cement stabilized road base material with nanochemicals. It was an expansive soil entirely different from the normal well drained soil in their morphological, chemical and physical characteristics. Another study section at Kuruvilakam road under Pothencode Block involves the stabilization of soil with the addition of cement ranging from 1% and spray application of organosilane solution mixed with nano polymer. Experimental studies indicate that mixing of nanochemicals with cement in soil reduces the plasticity index and increases the compaction characteristics, CBR and other strength parameters like UCS.

Roads are a vital component in nation building and one of the most effective modes to establish socio-economic and political network. For a country like India, blessed with robust monsoons, moisture becomes an enemy of roads. Ingress of water in the rainy season weakens the roads soil base. Strength of soil is an important factor to be included in design considerations of roads. Particularly, clayey soils may cause severe problems in pavement design due to uncertainties associated with their performance. Cement/lime treatment has become an accepted method for increasing the strength and durability of soils. However it is ineffective in certain conditions and large scale use of cement/lime may leads to high cost.

Nano-chemicals are nanotechnology based products which can provide solutions to moisture and bonding issues in pavements. Addition of nanoparticles as an external factor to soil will result in soil manipulation at atomic or molecular level and it influences the strength, permeability indices and resistance properties of soil. Nanotechnology is a reformed mode which can address the rising concern of poor quality roads.
Organosilanenanochemical which has been examined at study site is a nanotechnology based product manufactured by Zydex Industries, Gujarat. It is water soluble, ultra violet and heat stable, reactive soil modifier. It improves the frictional value, reduces water permeability and maintains breathability of the soil layer.It forms Si-O-Si bonded nanosiliconize surfaces in soil by converting water loving Silanol groups to water repellent Alkyl Siloxane groups. Organosilanenanochemical is environmental friendly as it allows the use of in situ soil and conserves limiting resources like aggregates and bitumen.

This paper presents a case study of trial section along sector 19, Gandhinagar, Gujarat, where the field in situ densities, CBR and Benkelman Beam Deflection (BBD) analysis was carried out to determine the in situ stiffness of the cement stabilized road base material with nanochemicals. It was an expansive soil entirely different from the normal well drained soil in their morphological, chemical and physical characteristics. Another study section at Kuruvilakam road under Pothencode block involves the stabilization of soil with the addition of cement ranging from 1% and spray application of organosilane solution mixed with nano polymer. Experimental studies indicate that mixing of nanochemicals with cement in soil reduces the plasticity index and increases the compaction characteristics, CBR and other strength parameters like UCS.