Selection of Most Suitable Stabilized/Solidified Dredged Soil to Use in Highway Subgrade Layer Construction

Document Type : Regular Article


1 Ph.D. Scholar, National Institute of Technology, Kurukshetra, Haryana, India

2 Former Professor, Manav Rachna Institute of Research and Studies, Faridabad, Haryana, India

3 Professor, National Institute of Technology, Kurukshetra, Haryana, India


The dredging of lakes, rivers, drains or water bodies, etc. is a regular practice all over the world and disposal of these dredged soils is a major problem due to the scarcity of open land in the urban areas. At present for handling this problem, engineers and soil experts are trying to find out alternative solutions such as the use of the dredged soil as constructional material in different development projects. This study deals with the contaminated dredged soil of Najafgarh drain, a major connecting drain of Yamuna river (Delhi) and aims at its use as alternative highway subgrade material after stabilization/solidification with cement, bottom ash and steel slag in different ratios. As the dredged soil contains a certain amount of organic matter that the influence the chemical process of stabilization/solidification, thus thermal treatment of raw dredged soil has also been carried out to ascertain its effects on stabilization/solidification. Furthermore, samples out of all those have satisfied the acceptance criteria of highway subgrade material have been selected, and finally, the most suitable sample out of them has been decided along with the assessment of its degree of suitability to use as highway subgrade materials. For both cases, the concept of the fuzzy logic of Prof. Latfi Zadeh has been introduced.


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