CHEMICAL, MINERAL AND MICROSTRUCTURAL CHARACTERIZATION OF SOLID WASTES FOR USE AS AUXILIARY ADDITIVES IN SOIL STABILIZATION.

James, Jijo; Pandian, P. Kasinatha

The study involved the characterization of five solid wastes viz. Phosphogypsum (PG), Ceramic Dust (CD), Press Mud (PM), Bagasse Ash (BA) and Coconut Shell Powder (CSP) in order to understand their suitability as additives to primary binders in soil stabilization. The materials were collected from their sources and were prepared in the laboratory for characterization. They were subjected to various tests including loss on ignition, x-ray fluorescence, x-ray diffraction and scanning electron microscopy tests. The results of the characterization were analysed using ASTM standard for natural pozzolans as well as literary evidence. Based on the investigation, it was found that only ceramic dust was able to achieve the minimum requirements for natural pozzolan in accordance with ASTM code C618. However, based on literary evidence it was found that CD, BA and PG were also capable of providing pozzolanic benefits.

SOLID waste; SOIL stabilization; PHOSPHOGYPSUM; X-ray fluorescence; X-ray diffraction; SCANNING electron microscopy; POZZUOLANAS

Journal of Solid Waste Technology & Management, 2018, Vol 44, Issue 3, p270

1088-1697

Academic Journal

10.5276/JSWTM.2018.270