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Effect of Fly Ash and Lime on Stabilization of Expansive Soil

P.P. Dahale*, P.B. Nagarnaik**, A.Y. Gajbhiye***

* Research Scholar, Department of Civil Engineering, RCOEM, Nagpur, Maharashtra, India.

** Professor, Department of Civil Engineering, GHRCE, Nagpur, Maharashtra, India.

*** Professor, Department of Civil Engineering, YCCE, Nagpur, Maharashtra, India.

Periodicity:March - May'2016
DOI : https://doi.org/10.26634/jce.6.2.5937

Abstract

Efficient use of waste materials is a proven solution to the problems associated with their disposal. Fly ash is one such material produced from thermal power plants that requires a huge disposal area and creates environmental problems. Stabilization of weak soils with fly ash not only improves the engineering properties of soil, but also provide answers to the issues of fly ash disposal. This paper reports the results of laboratory investigation carried out on clayey soil stabilized with fly ash and hydrated lime. Effects of lime, fly ash and the days of curing studied on Unconfined Compressive Strength (UCS), California Bearing Ratio (CBR) and compaction parameters of the stabilized soil were also analyzed. An attempt was made for establishing a relationship between the tensile strength and compressive strength of the 56 days cured stabilized mixes. Brazilian Tensile Strength (BTS) of lime-fly ash stabilized soil at 56 days curing varied in the range of 22 to 143 kN/m² and UCS from 143 to 2172 kN/m² . Remarkable strength increase indicates that the clayey soils can productively stabilize with fly ash and hydrated lime.

Keywords

Lime, Flyash, Maximum Dry Density (MDD), Optimum Moisture Content (OMC), Unconfined Compressive Strength (UCS), California Bearing Ratio (CBR), Brazilian Tensile Strength (BTS).

How to Cite this Article?

Dahale.P.P., Nagarnaik.P.B., and Gajbhiye.A.Y. (2016). Effect of Fly Ash and Lime on Stabilization of Expansive Soil. i-manager’s Journal on Civil Engineering, 6(2), 8-12. https://doi.org/10.26634/jce.6.2.5937

References

[1]. Sivapullaiah P. V. et al. (1995). “Optimization of Lime Content For Fly Ash”. ASTM Journal of Testing and Evaluation, Vol. 23, No. 3, pp. 222-227.

[2]. F.G. Bell, (1996). “Lime Stabilization of Clay Minerals and Soils”. Elsevier Journal of Engineering Geology, Vol. 42, pp. 223-237.

[3]. Ambarish Ghosh, and Chillara Subbarao, (2006). “Tensile Strength Bearing Ratio and Slake Durability Class F Fly Ash Stabilized with Lime and Gypsum”. Journal of Materials in Civil Engineering (ASCE), pp.18-27.

[4]. Khelifa et al., (2011). “Effect of Curing Time on the Shear Strength of Cohesive Soils Stabilized with Combination of Lime and Natural Pozzolana”. International Journal of Civil Engineering, Vol. 9, No. 2, pp. 90-96.

[5]. Central Electricity Authority, New Delhi, (2015). Report on Fly Ash Generation at Coal/lignite based Thermal Power Plants and its Utilization in the Country for the year 2014-15.

[6]. Indian Standards, (1970). Classification and Identification of Soils for General Engineering Purposes (IS 1498).

[7]. Indian Standards, (1985). Methods of Test for Soils- Grain Size Analysis (IS 2720 part 4).

[8]. Indian Standards, (1985). Methods of Test for Soils- Liquid Limit and Plastic Limit (IS 2720 part 5).

[9]. Indian Standards, (1980). Methods of Test for Soils- Determination of Dry Density & Water Content Relation using Light Compaction (IS 2720 part 7).

[10]. Indian Standards, (1991). Methods of Test for Soils- Determination of Unconfined Compressive Strength (IS 2720 part 10).

[11]. Indian Standards, (1987). Methods of Test For Soil- Laboratory Determination of CBR (IS 2720 part 16).

[12]. Indian Standards, (1981). Method of test for Determination of Tensile Strength by Indirect Test on Rock Specimens (IS 10082).

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Effect of Fly Ash and Lime on Stabilization of Expansive Soil

Abstract

Keywords

How to Cite this Article?

References

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