• Md. Mumtaz Alam
• Chhagan Lal
• Navneet Anand

India consist of 3-4% area covered by sandy soil and whereas it covers 900 million ha worldwide. Construction over sandy soil is a major problem in India, coastal regions of United States and the Gulf Coast area. Stabilization is the only way to overcome of this problem and this study proposed two waste material which can be utilized. These two materials are; Phosphogypsum and Marble Dust. Marble dust is waste material formed with production of marble which as a by-product requires disposal method. It has been used in construction industry over the years. Phosphogypsum is also a by-product emerged with the production of fertilizer. Phosphogypsum when stacked in large amount emits radioactivity which crucially needs to be disposed. In this research work, sandy soil is being stabilized with addition of phosphogypsum and marble dust in proportion of 2,4,6,8,12 and 15% and various tests are performed. Using phosphogypsum and marble dust helped in increasing shear strength and other engineering properties as well. It is found by unconfined compressive strength increases to 278.4 kN/m2 for 14 days curing period. CBR ratio increases from 5.12% to 8.34% for soil sample. Addition of marble dust helped in increasing in optimum moisture content by 12%. With this study, it is observed that addition of phosphogypsum and marble dust in sandy soil improve its engineering properties and behaviour.

Sandy Soil; Phosphogypsum; Marble Dust; Waste Management; Soil Stabilization

"Stabilization of Sandy Soil by Use of Phosphogypsum and Marble Dust", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 6, page no.c133-c136, June-2021, Available :http://www.jetir.org/papers/JETIR2106287.pdf

"Stabilization of Sandy Soil by Use of Phosphogypsum and Marble Dust", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 6, page no. ppc133-c136, June-2021, Available at : http://www.jetir.org/papers/JETIR2106287.pdf