TY - JOUR
T1 - Microwave sintering of sulphoaluminate cement with utility wastes
AU - Li, Haoxuan
AU - Agrawal, Dinesh K.
AU - Cheng, Jiping
AU - Silsbee, Michael R.
N1 - Funding Information:
This research was partly supported by a research grant from Electric Power Research Institute, which is gratefully acknowledged.
PY - 2001/9
Y1 - 2001/9
N2 - Class C flyash, baghouse dust and scrubber sludge have been successfully used for sulphoaluminate belite (SAB) cement preparation by microwave sintering. For proper raw mix proportioning, the modulus of gehlenite (C2AS)1 Conventional cement notation is used here, i.e. C=CaO, S=SiO2, etc. formation (MG) and modulus of calcium sulphosilicate (2C2S·CS̄) formation (MS) were put forward. The results indicated that, when MG and MS were 0.90-1.10, C2AS and 2C2S·CS̄ could be chemically eliminated when microwave-sintered at low temperature; with the 1150°C/10 min sintering condition, microwave-prepared sample had developed into SAB cement clinker with the main phases of C4A3S and β-C2S, while a conventionally fired one had not; with proper gypsum addition, microwave-prepared SAB cement developed strength similar to Type-I cement in 28-day hydration.
AB - Class C flyash, baghouse dust and scrubber sludge have been successfully used for sulphoaluminate belite (SAB) cement preparation by microwave sintering. For proper raw mix proportioning, the modulus of gehlenite (C2AS)1 Conventional cement notation is used here, i.e. C=CaO, S=SiO2, etc. formation (MG) and modulus of calcium sulphosilicate (2C2S·CS̄) formation (MS) were put forward. The results indicated that, when MG and MS were 0.90-1.10, C2AS and 2C2S·CS̄ could be chemically eliminated when microwave-sintered at low temperature; with the 1150°C/10 min sintering condition, microwave-prepared sample had developed into SAB cement clinker with the main phases of C4A3S and β-C2S, while a conventionally fired one had not; with proper gypsum addition, microwave-prepared SAB cement developed strength similar to Type-I cement in 28-day hydration.
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U2 - 10.1016/S0008-8846(01)00579-8
DO - 10.1016/S0008-8846(01)00579-8
M3 - Article
AN - SCOPUS:0035466133
SN - 0008-8846
VL - 31
SP - 1257
EP - 1261
JO - Cement and Concrete Research
JF - Cement and Concrete Research
IS - 9
ER -