Effect of addition of pond ash and fly ash on properties of ash—clay burnt bricks

Abstract

Two industrial solid waste products generated by Indian coal-fired power plants, namely pond ash and fly ash, were used in combination with local clay to develop building bricks. The clay were mixed with the two different ashes in the range 10 to 90 wt.%, hydraulically pressed and fired at 1000 degrees C. The fired products were characterized for various quality properties required for building bricks. The properties of the optimal compositions were compared with conventional red clay bricks including the developed microstructures and the comparative study generally showed that te ash-clay bricks were of superior quality to the conventional products.

Technological behaviour and recycling potential of spent foundry sands in clay bricks

“…Numerous types of wastes have been evaluated as alternative raw materials for brick manufacturing, including paper-making pulp (Maschio et al, 2009;Sutcu and Akkurt, 2009), steel slag (Cunico et al, 2003;Shih et al, 2004;El-Mahllawy, 2008), fly ash (Lin et al, 2006;Sarkar et al, 2007;Cultrone and Sebastián, 2009), water treatment sludge (Monteiro et al, 2008;Chiang et al, 2009), thin film transistor liquid crystal display optical glass (Lin, 2007;Dondi et al, 2009), processed tea (Demir, 2006), sawdust (Demir, 2008), and granite sludge (Acchar et al, 2006;Torres et al, 2009). The results of these studies indicated that the incorporation of wastes into the ceramic process is feasible at percentages ranging between 2 and 50%.…”

Utilization of coal gangue for the production of brick

“…Therefore, many industrial wastes have been recycled to prepare brick. The utilized industrial wastes include fly ash [5][6][7], red mud [8,9], hematite tailings [10], Mn-Fe solid wastes [11], marble powder [12], quarry residue combined with blast-furnace slag [13], titania slag [14], spent filtration earth or spent bleaching earth [15], urban river sediments [16], sludge [17][18][19][20], and silica fume [21]. However, the utilization rates of these wastes in brick are relatively low.…”

Fluidized bed combustion bottom ash: A better and alternative geo-material resource for construction

“…The majority of CCR residues such as fly ash and bottom ashes have been attracting more attention towards the use of alternative construction materials. Though the majority of research on fly ash has proved its worth as a construction material (Bhattacharya and Chattopadhyay, 2004; Deka and Sekharan, 2017; Osmanlioglu, 2014; Rai et al, 2013; Sarkar et al, 2007), the utility of bottom ash as a construction material has yet to be proved due to its generation during the pulverized combustion process. In a conventional PCC boiler, high-temperature combustion of coal firing has brought many serious environmental problems such as emission of NO x and SO 2 (Bhattacharya and Chattopadhyay, 2004).…”