Microwave sintering of sulphoaluminate cement with utility wastes

Haoxuan Li, Dinesh K. Agrawal, Jiping Cheng, Michael R. Silsbee

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1257-1261
Number of pages5
JournalCement and Concrete Research
Volume31
Issue number9
DOIs
StatePublished - Sep 1 2001

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Materials Science(all)

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