Determination of Geotechnical Properties and Stability of Expansive Soil using Fly Ash
Keywords:Expansive soil, SEM, XRD, Fly ash, Mineralogy
This study was conducted to have a detailed analysis of the geotechnical properties of expansive soil and fly ash from Sipat thermal power plant. It reported the findings of laboratory studies on certain common physical and geotechnical properties. The chemical properties and morphology of the black cotton soil (BCS) and fly ash is also determined using scanning electron microscopy and X-ray diffraction test. The geotechnical test includes determining specific gravity, particle size distribution, moisture content, standard proctor test, free swell index, and Atterberg’s limit. The different compositions of expansive soil with fly ash, yellow soil, moorum, and sand are studied. BCS was evaluated with fly ash, fly ash and sand, BCS with yellow soil, and moorum and fly ash. The study also analyzed the details and results of different tests conducted on soil samples. The results showed that strength and fly ash are inversely proportional; as fly ash increases, strength decreases, and vice versa. Fly ash was added from 20 to 80 % by replacing expansive soil by weight. The results indicated that expansive soil can be stabilized by the addition of fly ash to a limit of 10 to 20 %.
- The XRD And SEM results shows the mineral present in the FlyAsh and Expansive soil
- The geotechnical properties of Flyash and expansive soil is determined
- The OMC increases with decrease in densities
- The Particle size distribution curve shows the soil is GW soil
F Zha, S Liu, YJ Du and K Cui. Behavior of expansive soils stabilized with fly ash. Nat. Hazards 2008; 47, 509-23.
R Gobinath, GP Ganapathy, II Akinwumi, S Kovendiran, S Hema and M Thangaraj. Plasticity, strength, permeability and compressibility characteristics of black cotton soil stabilized with precipitated silica. J. Cent. S. Univ. 2016; 23, 2688-94.
CC Ikeagwuani and DC Nwonu. Emerging trends in expansive soil stabilisation: A review. J. Rock Mech. Geotech. Eng. 2019; 11, 423-40.
PV Sivapullaiah, JP Prashanth and A Sridharan, Effect of fly ash on the index properties of black cotton soil. Soils Found. 1996; 36, 97-103.
SR Kaniraj and V Gayathri. Permeability and consolidation characteristics of compacted fly ash. J. Energ. Eng. 2004; 130, 18-43.
S Khan, J Ivoke and M Nobahar. Coupled effect of wet-dry cycles and rainfall on highway slope made of Yazoo clay. Geosciences 2019; 9, 341.
F Khan, TK Rao and HD Bhave. Classification of foundation soil: Using Geoinformatics (GIS). Int. J. Civ. Eng. Tech. 2018; 9, 1199-207.
A Jain, AK Choudhary and JN Jha. Influence of rice husk ash on the swelling and strength characteristics of expansive soil. Geotech. Geol. Eng. 2019; 38, 2293-302.
SK Das and Yudhbir. Geotechnical characterization of some Indian fly ashes. J. Mater. Civ. Eng. 2005; 17, 544-52.
LC Dang, B Fatahi and H Khabbaz. Behaviour of expansive soils stabilized with hydrated lime and bagasse fibres. Procedia Eng. 2016; 143, 658-65.
F Khan, B Das, SRK Mishra and M Awasthy. A review on the feasibility and application of geospatial techniques in geotechnical engineering field. Mater. Today Proc. 2021, https://doi.org/10.1016/j.matpr.2021.02.108
M Vail, C Zhu, CS Tang, L Anderson, M Moroski and MT Montalbo-Lomboy. Desiccation cracking behavior of MICP-treated bentonite. Geosciences 2019; 9, 385.
N Tiwari and N Satyam. Experimental study on the influence of polypropylene fiber on the swelling pressure expansion attributes of silica fume stabilized clayey soil. Geosciences 2019; 9, 377.
BRP Kumar and RS Sharma. Effect of fly ash on engineering properties of expansive soils. J. Geotech. Geoenviron. Eng. 2004; 130, 764-7.
A Tejasvi and S Kumar. Impact of fly ash on soil properties. Natl. Acad. Sci. Lett. 2012; 35, 13-6.
CS Reddy, S Mohanty and R Shaik. Physical, chemical and geotechnical characterization of fly ash, bottom ash and municipal solid waste from Telangana State in India. Int. J. Geo Eng. 2018; 9, 23.
BA Mir and A Sridharan. Physical and compaction behaviour of clay soil – fly ash mixtures. Geotech. Geol. Eng. 2013; 31, 1059-72.
PS Parhi, L Garanayak, M Mahamaya and SK Das. Stabilization of an expansive soil using alkali activated fly ash based geopolymer. In: L Hoyos and J McCartney (Eds.). Advances in characterization and analysis of expansive soils and rocks. GeoMEast 2017. Sustainable Civil Infrastructures, Springer, Cham, 2018, p. 36-50.
AL Murmu, N Dhole and A Patel. Stabilisation of black cotton soil for subgrade application using fly ash geopolymer. Road Mater. Pavement Des. 2018; 21, 867-85.
S Mahvash, S Lopez-Querol and A Bahadori-Jahromi. Effect of class F fly ash on fine sand compaction through soil stabilization. Heliyon 2017; 3, e00274.
Z Nalbantoğlu. Effectiveness of class C fly ash as an expansive soil stabilizer. Construct. Build. Mater. 2004; 18, 377-81.
AL Murmu, A Jain and A Patel. Mechanical properties of alkali activated fly ash geopolymer stabilized expansive clay. KSCE J. Civ. Eng. 2019; 23, 3875-88.
AL Murmu, and A Patel. Studies on the properties of fly ash-rice husk ash-based geopolymer for use in black cotton soils. Int. J. Geosynthetics Ground Eng. 2020; 6, 38.
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