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CBR Behaviour of Soil Treated with Class ‘F’ Fly Ash
Abstract
Disposal of fly ash available at thermal power stations is not only a serious national issue but also causes endanger to the mankind if not properly utilized and handled. The study aims at making effective utilization of Class ‘F’ fly ash by mixing with soil in suitable proportions and showcasing its usage to be adopted in subgrade as well as subbase components in pavement infrastructures. Silty sand was mixed with increasing percentages of Class ‘F’ fly ash ranging from 0–50% by dry weight of soil. Unsoaked and soaked California bearing ratio (CBR) tests were conducted in Geosynthetics Research and Testing Laboratory, IIT Bombay. A substantial increase in soaked CBR value of about 70.5% was observed on adding 30% of fly ash. The values of liquid limit, plastic limit and plasticity indices also were observed to be decreased on account of addition of fly ash. It was concluded that addition of Class ‘F’ fly ash to the soil, not only proves to be an economical solution in pavement infrastructures but also can be treated as an environmental friendly solution for its disposal in an effective manner.
References
on strength behaviour of typical soils, J Constr Build Mater. 2004; 18: 263–267p.
Arora S, Aydilek AH. Class F fly ash amended soils as Highway base materials, J Mater Civil Eng. 2005; 17: 640–649p.
Bhuvaneshwari S, Robinson RG, Gandhi SR. Stabilization of expansive soils using Fly ash, Fly ash Utilization Programme (FAUP), TIFAC, DST, New Delhi, India, 2005.
Dutta RK, Sarda VK. CBR behaviour of Waste plastic strip-reinforced stone dust/ fly ash overlying saturated clay, Turkish J Eng Environ Sci. 2006; 31: 171–182p.
Lin DF, Lin KL, Luo HL. A comparison between sludge ash and fly ash on the improvement in soft soil, J Air Waste Manag Assoc. 2007a; 57(1): 59–64p.
Li L, Benson CH, Edil TB, et al. Evaluation of recycled asphalt pavement material stabilized with fly ash, GSP 169, Soil and material inputs for mechanistic empirical pavement design, 2007, 1–10p.
Ghosh A, Subbarao C. Strength characteristics of fly ash modified with lime and gypsum, J Geotech Geo-environ Eng. 2007; 133: 757–766p.
Chauhan MS, Mittal S, Mohanty B. Performance evaluation of silty sand subgrade reinforced with fly ash and fibre, Geotext Geomembranes. 2008; 26(5): 429–435p.
Liu J, Nie Y. Lime fly ash stabilization of asphalt pavements using full depth reclamation, Integrated Transportation Systems-2010, ICCTP, 2010, 3581–3590p.
Mehta A, Parate K, Ruprai BS. Stabilisation of Black cotton soils by Fly ash, Int J Appl Innovation Eng Manag. 2013, ISSN 2319-4847.
Saha S, Pal SK. Influence of Fly ash on Unconfined compressive strength of soil and fly ash layers placed successively, Electron J Geotech Eng. 2013; 18[2013], Bund.H, 1593–1602p.
Karthik S, Ashokkumar E, Gowthan P, et al. Soil stabilization by using fly ash, IOSR J Mech Civil Eng. 2014; 10(6). 20–26p.
Nadaf MB, Mandal JN. Experimental studies and Analysis for Basic Characterization of Fly ash, Proceedings of 4th Global Engineering, Science and Technology Conference, 27-28 December, 2013, BIAM Foundation, Dhaka, Bangladesh, ISBN: 978-1-922069-43-6.
Ram Rathan lal B, Mandal JN. Study of Cellular reinforced fly ash under triaxial loading conditions, Int J Geotech Eng. 2013; 7(1): 91–104p.
Salunkhe TV, Mandal JN. Behavior of fly ash at different mix ratios with plastic recycled polymers, Int J Res Appl Sci Eng Technol. (IJRASET), 2014; 2(III): 190–198p. 2321-9653.
ASTM C 618-12a, Standard specification for coal Fly ash and raw or calcined natural pozzolan for use in concrete, Annual Book of ASTM Standards, 2013, 1–5p.
IS: 1498 (1970): Classification and identification of soils for general engineering purposes [CED 43: Soil and Foundation Engineering].
IS: 2720-4 (1985): Methods of test for soils, Part 4: Grain size analysis [CED 43: Soil and Foundation Engineering].
IS: 2720-8 (1983): Methods of test for soils, Part 8: Determination of water content-dry density relation using heavy compaction [CED 43: Soil and Foundation Engineering].
IS: 2720-3-1 (1980): Methods of test for soils, Part 3: Determination of specific gravity, Section 1: Fine grained soils [CED 43: Soil and Foundation Engineering].
IS: 2720-16 (1987): Methods of test for soils, Part 16: Laboratory determination of CBR [CED 43: Soil and Foundation Engineering].
IS: 2720-5 (1985): Methods of test for soils, Part 5: Determination of liquid and plastic limit [CED 43: Soil and Foundation Engineering].
IRC: SP: 72-2007 (Guidelines for design of flexible pavements for low volume rural roads).
IRC: 37 – 2012 (Tentative guidelines for design of flexible pavements).
DOI: https://doi.org/10.3759/joge.v3i1.3746
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