TY - JOUR
T1 - Reactivity and leaching potential of municipal solid waste incineration (MSWI) bottom ash as supplementary cementitious material and precursor for alkali-activated materials
AU - Chen, Boyu
AU - Zuo, Yibing
AU - Zhang, Shizhe
AU - de Lima Junior, Luiz Miranda
AU - Liang, Xuhui
AU - Chen, Yun
AU - van Zijl, Marc Brito
AU - Ye, Guang
PY - 2023
Y1 - 2023
N2 - This work evaluated the reactivity and leaching potential of municipal solid waste incineration (MSWI) bottom ash as supplementary cementitious material (SCM) and precursor for alkali-activated materials (AAM). The chemical composition of the amorphous phase in MSWI bottom ash was found to be in the same range as that of Class F coal fly ash. The reactivity of MSWI bottom ash as SCM and AAM precursor was tested to be much lower than that of blast furnace slag, but similar to that of Class F coal fly ash. The method of thermodynamic modeling was found useful in providing references for the mix design of MSWI bottom ash-based AAM. Grinding MSWI bottom ash into powder for the application of SCM and AAM precursor increased its leaching potential. Based on the findings of this study, recommendations were provided on how to use MSWI bottom ash to prepare blended cement pastes and AAM.
AB - This work evaluated the reactivity and leaching potential of municipal solid waste incineration (MSWI) bottom ash as supplementary cementitious material (SCM) and precursor for alkali-activated materials (AAM). The chemical composition of the amorphous phase in MSWI bottom ash was found to be in the same range as that of Class F coal fly ash. The reactivity of MSWI bottom ash as SCM and AAM precursor was tested to be much lower than that of blast furnace slag, but similar to that of Class F coal fly ash. The method of thermodynamic modeling was found useful in providing references for the mix design of MSWI bottom ash-based AAM. Grinding MSWI bottom ash into powder for the application of SCM and AAM precursor increased its leaching potential. Based on the findings of this study, recommendations were provided on how to use MSWI bottom ash to prepare blended cement pastes and AAM.
KW - Alkali-activated materials
KW - Leaching
KW - MSWI bottom ash
KW - Reactivity
KW - Supplementary cementitious material
UR - http://www.scopus.com/inward/record.url?scp=85174833438&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2023.133890
DO - 10.1016/j.conbuildmat.2023.133890
M3 - Article
AN - SCOPUS:85174833438
SN - 0950-0618
VL - 409
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 133890
ER -
