Rights statement: This is the author’s version of a work that was accepted for publication in Cement and Concrete Composites. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Cement and Concrete Composites,72, 2016 DOI: 10.1016/j.cemconcomp.2016.06.001
Accepted author manuscript, 0.99 MB, PDF document
Available under license: CC BY-NC-ND
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Leaching resistance of hazardous waste cement solidification after accelerated carbonation
AU - Zha, Xiaoxiong
AU - Wang, Haiyang
AU - Xie, Peiyu
AU - Wang, Chen
AU - Dangla, Patrick
AU - Ye, Jianqiao
N1 - This is the author’s version of a work that was accepted for publication in Cement and Concrete Composites. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Cement and Concrete Composites, 72, 2016 DOI: 10.1016/j.cemconcomp.2016.06.001
PY - 2016/9
Y1 - 2016/9
N2 - When cement-based materials are carbonated, some of their physicochemical properties are changed, which includes reductions of porosity by 20% and pH from 12-13 to 8–9. These changes can enhance the retention ability of cementitious solids containing hazard waste. This research studied the effect of carbonation on the leaching resistance of hazardous waste cement solidification. The finite element software COMSOL Multiphysics was used to simulate the process of accelerated carbonation and the effect of carbonation on leaching. Laboratory tests were conducted to validate the numerical models. Parametric studies from the numerical simulations revealed that carbonation could significantly improve leaching retention capabilities of cementitious solids containing hazardous wastes.
AB - When cement-based materials are carbonated, some of their physicochemical properties are changed, which includes reductions of porosity by 20% and pH from 12-13 to 8–9. These changes can enhance the retention ability of cementitious solids containing hazard waste. This research studied the effect of carbonation on the leaching resistance of hazardous waste cement solidification. The finite element software COMSOL Multiphysics was used to simulate the process of accelerated carbonation and the effect of carbonation on leaching. Laboratory tests were conducted to validate the numerical models. Parametric studies from the numerical simulations revealed that carbonation could significantly improve leaching retention capabilities of cementitious solids containing hazardous wastes.
KW - Hazardous waste cement solidification
KW - Accelerated carbonation
KW - COMSOL multiphysics simulation
KW - Particle leaching test
KW - Leaching rate and cumulative leaching rate
U2 - 10.1016/j.cemconcomp.2016.06.001
DO - 10.1016/j.cemconcomp.2016.06.001
M3 - Journal article
VL - 72
SP - 125
EP - 132
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
SN - 0958-9465
ER -