Use of Lime and Waste Plastic Fibers for Subgrade Stabilization
R. Ratna Prasad1, T.Venkateswararao2, D. Auditya Sai Ram3
1R.Ratna Prasad, Assistant Professor, VVIT, Nambur, Guntur (A.P), India.
2T.Venkateswararao, Professor, VVIT,Nambur, Guntur (A.P), India.
3D.Auditya Sai Ram, Assistant Professor, VVIT, Nambur, Guntur (A.P), India.
Manuscript received on 07 December 2018 | Revised Manuscript received on 18 December 2018 | Manuscript published on 30 December 2018 | PP: 37-42 | Volume-8 Issue-2C2, December 2018 | Retrieval Number: 100.1/ijeat.B10091282C218/18©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Black cotton soil is poor in shear and shows high swelling & shrinkage characteristics due to clay minerals. To utilize the soil as subgrade material, soil is blended with lime and plastic fibers. In the present investigation the level of lime utilized was 1% to 5% by dry weight of soil and percentage of plastic fibers 0.5% to 1.5%. Laboratory tests reveal that the ideal level of lime as 4%. Endeavors have been made with 4% lime and different rates of plastic fibers. Atterberg limits, standard proctor, modified compaction and CBR tests were led with lime and plastic fibers. The most extreme dry density of unadulterated soil increased from 17.59kN/m3 to 18.53kN/m3 by increase of lime from 0% to 5% and OMC diminishes from 21.5% to 14.146%. The expansion of 4% lime and 0.75% plastic fibers, the CBR esteem is expanded to 6.18% and for soil it is 2.01%, liquid and plastic limit values are diminished with % lime. This paper portrays the compaction and strength of clayey soil fortified with plastic fibers. Fiber utilized in this investigation is separated from waste plastic bags. Laboratory tests reveal that the ideal level of lime as 4%. Clayey soil with 4% lime indicates just minor increment in the quality of soil, repressing its utilization for ground changes. To additionally build the quality of the soil plastic fiber mix, ideal level of 4% of lime is included. The effect of aspect ratio, quantity of fiber on the conduct of the composite soil specimen with curing is studied. It is discovered that strength properties of optimum combination of soil-lime specimens fortified with plastic fibers is better than untreated BC soil or BC soil alone with plastic fiber. Lime treatment in BC soil enhances strength but it imparts brittleness in soil specimen. BC soil treated with 4% lime and reinforced with plastic fiber shows ductility behavior before and after failure. An optimum fiber content of 1% (by weight) with aspect ratio of 20 was recommended for strengthening BC soil.
Keywords: Black Cotton (BC) Soil, Liquid Limit, Plastic Limit, Plasticity Index (PI), Standard and Modified Compaction, Optimum Moisture Content (OMC), Maximum Dry Density (MDD), California Bearing ratio (CBR), Plastic Fibers (PF), Lime.
Scope of the Article: Radio Over Fiber