An Experimental Investigation On CBR Improvement Of Sand-Flyash Mix Using Geogrid Layers

Parveen Chander*, R.Sharma**
* Assistant Professor, Department of Civil Engineering, Punjabi University, Patiala, India.
** Assistant Professor, Department of Civil Engineering, Chandigarh University, Punjab, India.
Periodicity:June - August'2014


Development of an adequate network of roads, especially in remote rural areas is of vital importance for the socioeconomic development of a country. Search is being made to find alternative materials, for use in pavement construction. Fly ash, lime and cement are the commonly used materials for soil stabilization. Geosynthetics, Geotextiles and Geo-grids are also used nowadays in roads for subgrade improvement in road construction. This paper presents the laboratory CBR test results conducted on sandy soil mix with fly ash for unreinforced and reinforced cases. The reinforcement was done using geogrids in layers at different depths in CBR mould. The fly ash was varied from 15% to 35% in sand sample. All the tests were conducted at Optimum moisture content (OMC) and maximum dry density (MDD) of mixes. The results of California Bearing Ratio (CBR) tests have shown considerable improvement with the use of reinforcement. The maximum increase in CBR value with Geo- grid was observed with the 2 layers of Geo-grid use. The increase in value of CBR was from 6% for virgin soil to 13% with use of geogrids.


CBR, Geogrid layers, Fly ash, Stabilization, OMC, MDD.

How to Cite this Article?

Chauhan,R., and Sharma.R. (2014). An Experimental Investigation On CBR Improvement Of Sand-Flyash Mix Using Geogrid Layers. i-manager’s Journal on Civil Engineering, 4(3), 10-14


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