Evaluation of the effects of hydrothermal curing on the mechanical behavior or mortars characterized by MSWI bottom ash fine aggregates

Research output: Contribution to conferencePaperAcademic

Abstract

Nowadays, the production of MSWI bottom ash (BA) is necessary for the optimization of the disposal of household waste. However, a main concern is linked to the leaching of contaminants, such as heavy metals and salts, in the surrounding environment. By washing, BA is cleaned from most of the salts, while the release of heavy metals is not easily achieved. After such treatment, BA is mostly used as aggregates. The use of BA in the presence of cement can reduce the leaching of heavy metals, since the reduction of porosity leads to a superior immobilization capacity. Moreover, due to its influence on the matrix densification, autoclaving can be useful for systems in which secondary building materials are involved. However, hydrothermal curing is not widely studied for bottom ash application as aggregates in mortars. This paper will address the influence on the strength behavior of autoclaved mortars with 25% BA, as sand replacement.
Original languageEnglish
Publication statusPublished - Jun 2017
Event6th International Conference on Non-traditional Cement & Concrete(NTCC2017) - Hotel Continental, Brno, Czech Republic
Duration: 19 Jun 201722 Jun 2017
Conference number: 6
http://www.fce.vutbr.cz/stm/fracture/symposium2017/
http://www.fce.vutbr.cz/stm/fracture/symposium2017/

Conference

Conference6th International Conference on Non-traditional Cement & Concrete(NTCC2017)
Abbreviated titleNTCC 2017
CountryCzech Republic
CityBrno
Period19/06/1722/06/17
Internet address

Keywords

  • MSWI bottom ash
  • hydrothermal curing
  • aggregates
  • XRD

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