Application of Natural Fibre with Sand and Moorum for Subbase Construction of Roads | |
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( Volume 3 Issue 5,May 2017 ) OPEN ACCESS | |
Author(s): | |
Joyanta Maity, Saurav Pal, Debankar Sengupta | |
Abstract: | |
In India recently large amount of construction of roads are going on. Such constructions require huge quantity of good brickbats for subbase of road. But the production of bricks is limited due to non-availability of good soils. In view of this there is growing need for use of alternate materials in place of brickbats for making sub base. On the other hand, natural fibers like Jute and Coir fiber are biodegradable, eco-friendly and are available in abundance in India. Randomly distributed fibers is one of the latest techniques in which fibers of desired quality and type are added to the soil. This method is very easy and no special skill is required. Therefore natural fiber can be mixed with sand and moorum in the sub base course to result increase in strength and decrease deformability. Such application will also reduce the cost of pavement. An experimental program has been undertaken here for the improvement of compactibility of sands, and increase in California Bearing Ratio of such laid fiber-sand-moorum composite layers. From this study, remarkable increase in the CBR values was observed with the increase of percentage (%) of moorum mixed for various sand-fiber mix. These sand-fiber composite mixed with 25% of moorum by weight of sand may suit best as subbase material for highway having CBR greater than 20%. |
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