Abstract
Utilization of fly ash, bottom ash and municipal solid waste in the field of geotechnical engineering necessitates determination of its physical, chemical, morphological and engineering properties. This paper presents detailed physical, chemical and geotechnical characterization of fly ash, bottom ash and municipal solid waste from Telangana State in India. Fly ash and bottom ash samples were collected from Kakatiya thermal power station in India. Municipal solid waste (MSW) sample was collected from Borabanda municipal dump site in the city of Hyderabad, India. From the experimental results, it is noticed that specific gravity of fly ash, bottom ash and municipal solid waste were found to be 1.86, 1.77 and 2.2 respectively. Presence of quartz and mullite; quartz, mullite and calcium carbonate; and quartz and corundum are found to be predominant in fly ash, bottom ash and MSW respectively. The peak friction angle of fly ash, bottom ash and municipal solid waste were found to be 37.02°, 33.77° and 35.23° respectively. Permeability characteristics of fly ash, bottom ash and municipal solid waste were observed to be 1.01E−04 cm/s, 2.01E−04 cm/s and 1.16E−04 cm/s respectively. From the observation of experimental results, it can be concluded that fly ash, bottom ash and municipal solid waste from Telangana state are effective material to be used as backfill material, filter material and embankment construction.
Highlights
Agriculture industry, household activities, domestic and commercial activities, construction demolition along with several industries throughout the world generates waste in huge quantity
Different physical, chemical and geotechnical tests were conducted on fly ash and bottom ash collected from Kakatiya thermal power station (KTPS) and municipal solid waste (MSW) collected from Hyderabad city to study the physical, chemical, morphological and engineering characteristics
Presence of quartz and mullite; quartz, mullite and calcium carbonate; and quartz and corundum are found to be predominant in fly ash, bottom ash and MSW respectively
Summary
Agriculture industry, household activities, domestic and commercial activities, construction demolition along with several industries throughout the world generates waste in huge quantity (rice husk ash, municipal solid waste, coal ash, liquid waste, building debris, etc.). Fly ash, bottom ash and municipal solid waste (MSW) samples can be effectively used for various geotechnical fills such as, backfill material for retaining structures, filling low laying areas, highway embankment construction and to stabilize the problematic soils. In the present study physical, chemical and geotechnical characterization of fly ash, bottom ash and municipal solid waste from Telangana state in India have been investigated. Experimental investigation Collected fly ash, bottom ash and municipal solid waste samples have been tested in the laboratory to investigate their physical, chemical and geotechnical properties. To study the morphological characteristics of fly ash, bottom ash and municipal solid waste samples, scanning electron microscope (SEM) test was performed. Municipal solid waste (MSW) sample contains elements of aluminum (Al), Fig. 11 Energy dispersive X-ray (EDX) graphs of KTPS bottom ash
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