1. Characterization of mine overburden and fly ash as a stabilized pavement material.
- Author
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Mahamaya, Mahasakti and Das, Sarat Kumar
- Subjects
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STRIP mining & the environment , *SPOIL banks , *FLY ash , *MORPHOLOGY , *COAL industry , *X-ray diffraction - Abstract
Mine overburden removed during surface mining is considered as “waste” or “spoil” that is consuming a vast tract of land for storage. Due to high ash content (30–50%) of Indian coals, 130 million tons of fly ash per year is generated with less than 50% of it is being used. Many a time thermal power plants are close to coal mines. Hence, in the present study it is proposed that a mixture can be prepared using fly ash and coal mine overburden with or without cement, which can be used as a stabilized pavement material. The present study deals with characterization of cement stabilized mine overburden fly ash mixture as a pavement material. Mixtures with varying cement percentage of 4–7% were prepared. Based on the unconfined compressive strength and California Bearing ratio values of the stabilized mixture, it was observed that it can be used as a stabilized pavement material. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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