Document Type : Research Note


Civil Engineering Department, Chandigarh University, Mohali, Punjab, India


The expansion and contraction properties of black cotton soil make it a challenging task to construct structures on it. Hence, modifying its expansion and contraction behavior is imperative to make black cotton soil appropriate for construction purposes. This study aims to assess the geo-technical properties of black cotton soil through laboratory testing, incorporating waste foundry sand (WFS) and sodium chloride (NaCl) to utilize the combination as sub-grade material. Differential free swell, consistency limits, the standard Proctor test, and California bearing ratio (CBR) tests are conducted with varying amounts of both materials. The laboratory testing reveals that the addition of the appropriate amount of waste foundry sand, sodium chloride, or both, improve the geo-technical properties of black cotton soil (BCS). Furthermore, using the CBR values obtained, the thickness of flexible pavement is designed with the IITPAVE software and evaluated against the IRC: 37-2018 recommendations. The software analysis demonstrates a reduction in pavement thickness for varying levels of commercial vehicles per day such as 1000, 2000, and 5000 CVPD across all combinations. This mixture not only addresses the issues related to black cotton soil but also provides an economical solution for soil stabilization and proves to be sustainable as it involves the utilization of waste materials such as waste foundry sand.


Main Subjects

[1]. Chen, F.H. (1975). Foundations on Expansive Soils, Elsevier Scientific Publication Company
[2]. Ola, S.A. (1978). The geology and geotechnical properties of the black cotton soils of northeastern Nigeria. Engineering Geology, 12, 375-391.
[3]. Plait, R.M. (1953). Determination of swelling pressure of black cotton soil–a method. In Proceedings of the third international conference on soil mechanics and foundation engineering, Zurich, Switzerland (Vol. 1, pp. 170-172).
[4]. Tomlinson, M.J. and Boorman, R. (1999). Foundation Design and Construction, sixth Ed. Longman, Harlow Essex, p. 536.
[5]. Osinubi, J.K., 2000. Stabilization of tropical black clay with cement and pulverized coal bottom ash admixture. In: Charles, D., Shackelford, L., Chang, Nien-Yui (Eds.), Advances in Unsaturated Geotechnics. ASCE Geotechnical Special Publication No. 99, pp. 289–302.
[6]. Gidigasu, S.S.R. and Gawu, S.K.Y. (2013). The mode of formation, nature and geotechnical characteristics of black cotton soils-a review. Sci Res Essays, 1, 377-90.
[7]. Navagire, O.P., Sharma, S.K., and Rambabu, D. (2022). Stabilization of black cotton soil with coal bottom ash. Materials Today: Proceedings, 52, 979-985.
[8]. Ikeagwuani, C.C., Obeta, I.N., and Agunwamba, J.C. (2019). Stabilization of black cotton soil subgrade using sawdust ash and lime. Soils and Foundations. 59 (1): 162-175.
[9]. Sharma A, Sharma RK (2019) Effect of addition of construction–demolition waste on strength characteristics of high plastic clays. Innov Infrastruct Solutions. 4 (1):27.
[10]. Sharma, A. and Sharma, R.K. (2020). Strength and drainage characteristics of poor soils stabilized with construction demolition waste. Geotechnical and Geological engineering. 38 (5): 4753-4760.
[11]. Venkatesh, J., Chinnusamy, K., and Murugesh, S. (2020, November). A Review Paper on Comparative study of Expansive Sub-Grade Stabilization using Industrial Wastes like Foundry Sand, Quarry Dust, Demolition Wastes and Rubber Scrap. In IOP Conference Series: Materials Science and Engineering (Vol. 955, No. 1, p. 012062). IOP Publishing.
[12]. Heidemann, M., Nierwinski, H.P., Hastenpflug, D., Barra, B.S., and Perez, Y.G. (2021). Geotechnical behavior of a compacted waste foundry sand. Construction and Building Materials, 277, 122267.
[13]. Siddique, R. and Singh, G. (2011). Utilization of waste foundry sand (WFS) in concrete manufacturing. Resour. Conserv. Recy. 55 (11): 885892.
[14]. Winkler E S and Bolshakov A (2000) Characterization of Foundry Sand Waste. Chelsea Center for Recycling and Economic Development University of Massachusetts at Lowell. United States.
[15]. Javed. S. and Lovell. C.W (1994), Uses of Waste Foundry Sands in Civil Engineering. Transportation Research Record. 1994:1486:109-113
[16]. Tittarelli, F. (2018). Waste foundry sand. In Waste and Supplementary Cementitious Materials in Concrete (pp. 121-147). Woodhead Publishing.
[17]. Anand, D., Sharma, R.K., and Sharma, A. (2021). Improving swelling and strength behavior of black cotton soil using lime and quarry dust. In Sustainable Development through Engineering Innovations (pp. 601-609). Springer, Singapore.
[18]. Ferrazzo, S.T., de Araújo, M.T., Bruschi, G.J., Chaves, H.M., Korf, E.P., and Consoli, N.C. (2023). Mechanical and environmental behavior of waste foundry sand stabilized with alkali-activated sugar cane bagasse ash-eggshell lime binder. Construction and Building Materials, 383, 131313.
[19]. Bara, S.M. and Tiwary, A.K. (2023). Effect of waste foundry sand and terrazyme on geotechnical characteristics of clay soil. Materials Today: Proceedings.
[20]. Dahale, P.P., Madurwar, K.V., and Burile, A.N. Comparative study of black cotton soil stabilization with RBI Grade 81 and sodium silicate, international journal of innovative research in science, engineering and technology, 2, 2013, 493-499.
[21]. Manjunath, R., Vinay, K.S., Raghu, R., VarunRaj, N.A., and Vibish, P.R. Stabilization of lithomargic clay using sodium chloride salt, international conference on advances in architecture and civil engineering (AARCV), 1, 2012, 384-386.
[22]. Singh, H.P., Chana, J.S., Singh, G., Singh, H., and Singh, M. (2020). Improvement in the Engineering Properties of Clayey Soil using Sodium Chloride. In International Conference of Advance Research & Innovation (ICARI).
[23]. Moh, Z.C. (1962). Soil stabilization with cement and sodium additives. Journal of Soil Mechanics and Foundations Division, ASCE. 88 (6): 81–105.
[24]. Bhardwaj, A., Sharma, R.K., and Sharma, A. (2021). Stabilization of clayey soil using waste foundry sand and molasses. In Sustainable Development Through Engineering Innovations: Select Proceedings of SDEI 2020 (pp. 641-649). Springer Singapore.
[25]. Dubey, P., and Jain, R. (2015). Effect of common salt (NaCl) on engineering properties of black cotton soil. Int. J. Sci. Tech. Eng, 2 (01): 64-68.
[26]. Kale, R.Y., Wawage, R., and Kale, G. (2019), “Effect of foundry waste on expansive soil (black cotton soil)”, International Journal for Scientific Research and Development, Vol. 7 No. 2, pp. 1800-1804.
[27]. Bhardwaj, A. and Sharma, R.K. (2020). Effect of industrial wastes and lime on strength characteristics of clayey soil. Journal of Engineering, Design and Technology.
[28]. Ghavami, S., Jahanbakhsh, H., Saeedi Azizkandi, A., and Moghadas Nejad, F. (2021). Influence of sodium chloride on cement kiln dust-treated clayey soil: strength properties, cost analysis, and environmental impact. Environment, Development and Sustainability, 23, 683-702.
[29]. Robert L. Parsons, and Elizabeth Kneebone (2004), “Use of Cement Kiln Dust for the Stabilization of Soils” ASCE, Geotechnical Engineering for Transportation Projects.
[30]. Gupta, C., and Sharma, R.K. (2016). Black cotton soil modification by the application of waste materials.