Nowadays, the incineration of municipal solid waste (MSW) is widely applied as it reduces the waste by 90 % by volume and 70 % by mass. The main by-product of MSW incineration is bottom ash (BA). Despite numerous studies concerning the applications of this by-product in construction field, BA is not widely applied, since its suitability for this purpose is affected by many aspects, from the source of the waste to its collection and disposal. This paper provides a general characterization of the ashes, including metallic Al and CaCO3 content, particle size, density and chemical composition. It address the presence of reactive compounds available for pozzolanic reaction of three different types of bottom ashes and sludge, based on the calcium hydroxide consumption in time, measured by TGA. Moreover, final performances of BA, as inert replacement of CEM I 42.5 N (PC) are analysed based on the strength activity index, and calorimetry. The ashes applied improve the reaction of PC within 14 days, when the pozzolanic reactions is maximized. On the other hand, the high presence of calcium-based compounds leads to the formation of CH and consequent expansion of pastes, causing a reduction of strength in time.
|Titel||4th International Conference on Sustainable Solid Waste Management, 23–25 June 2016, Limassol, Cyprus|
|Status||Gepubliceerd - 21 jul 2016|
|Evenement||4th International Conference on Sustainable Solid Waste Management, 23-25 June 2016, Lymasol, Cyprus - Atlantica Miramare Beach Hotel, Limasol, Cyprus|
Duur: 23 jun 2016 → 25 jun 2016
|Congres||4th International Conference on Sustainable Solid Waste Management, 23-25 June 2016, Lymasol, Cyprus|
|Periode||23/06/16 → 25/06/16|
Caprai, V., Schollbach, K., Florea, M. V. A., & Brouwers, H. J. H. (2016). Investigation of bottom ash mechanical performances based on the amount of reactive compounds. In 4th International Conference on Sustainable Solid Waste Management, 23–25 June 2016, Limassol, Cyprus