• Amir Afzal
• Nasir Ali
• Abishek Sharma
• Faissal Mehmood

The performance of pavements is very sensitive to the characteristics of the subgrade soil. For that reason, weak subgrade is augmented by espousing the most profitable stabilization technique. Based on the literature review, stabilization with fly ash activated subgrade found to be an effective option for improvement of soil properties. This study investigates the effect caused by the addition of fly ash on the geotechnical properties of subgrade soils. Different percentages of fly ash are added to the subgrade soil i.e., 12, 22, 32, and 42 per cent and the effect was studied. Tests were performed on consistency limits, compaction, California Bearing Ratio, and unconfined compression tests were conducted on untreated and flyash stabilized soils. The experimental results show that addition of fly ash admixture to the soil has great influence on its properties. It was found that the optimum dosage of fly ash is 22% revealed in significant improvement in strength and durability and reduction in swelling and plasticity properties of the soil. Based on the results, it is recommended that fly ash admixture be used for the stabilization of expansive subgrades.

Subgrade Soil, Stabilization, Flyash, Compaction.

"USE OF FLYASH FOR THE STABILIZATION OF SUBGRADE SOIL IN PAVEMENTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.664-668, June-2019, Available :http://www.jetir.org/papers/JETIR1908B85.pdf

"USE OF FLYASH FOR THE STABILIZATION OF SUBGRADE SOIL IN PAVEMENTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp664-668, June-2019, Available at : http://www.jetir.org/papers/JETIR1908B85.pdf