Characteristics of Sandy-Clay Mixed With Various Proportions of Sugarcane Fiber | |
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( Volume 3 Issue 5,May 2017 ) OPEN ACCESS | |
Author(s): | |
Subhadeep Mondal, Joyanta Maity, Bikash Chandra Chattopadhyay | |
Abstract: | |
In many situations, the engineers in road construction face the problem of subgrade soil of loose and soft soil with poor drainage conditions resulting low CBR value when placed at OMC in compacted condition. Huge amount of sub-grade soil is being required for constructing of large amount of road construction. But available strength of soils near road construction sites is not suitable. Such soils need addition of some strengthening elements. Natural fibers from sugarcane are biodegradable, eco-friendly and are available in high amount in many countries at very low cost. The mixing of fibre in soil results increase in strength and decrease of deformability. In this investigation, Sugarcane fibre was randomly mixed at varying length and percentage with weak clayey soil to improve the compactness and strength of soil. A series of standard Proctor test and unsoaked California Bearing Ratio (C.B.R) tests were conducted for each combination of soil- fiber mix to study the compaction behaviour and changing C.B.R value of the soil- fiber mix combination. From the test results, it was observed that with the increase in percentage of fiber in soils, M.D.D decreases due to its light mass density of fibre, whereas O.M.C increases due to its high water absorption capacity. However maximum C.B.R value is achieved at mixing fibers of 2 cm length at 1% mixing by weight. |
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