skip to main content

SciTech ConnectSciTech Connect

Title: Quality design of belite–melilite clinker

We have developed a new cement clinker, consisting mainly of belite and melilite, which is capable of increasing the amount of recycled waste as a part of its raw materials. We analyzed clinkers with a wide range of compositions, and clarified the quantitative relationship between the chemical and mineral compositions. Clinkers consisting mostly of belite and melilite were successfully obtained at the CaO/SiO{sub 2} mass ratio of 1.7 to 1.9. Test cements were prepared using these clinkers and mixed with OPC for the evaluation of fluidity and strength. The belite–melilite cement was found to have good fluidity, and the belite–melilite cement mixed with OPC at up to 30% exhibited a satisfactory long term strength equivalent to the OPC, demonstrating the potential as an alternative to OPC. Electron probe microanalysis revealed the relatively high concentration of diphosphorus pentaoxide in belite, suggesting this component might contribute to the strength enhancement of the cement. -- Highlights: •A new cement clinker consisting mainly of belite and melilite was designed. •The clinker enables the use of various recycled wastes as part of its raw materials. •The relationship between the chemical and mineral compositions was clarified. •This cement mixed with OPC at up to 30% exhibitedmore » a good quality equivalent to OPC.« less
Authors:
 [1] ;  [2] ; ;  [1] ;  [3]
  1. R and D center, Taiheiyo Cement Corporation, Chiba 285-8655 (Japan)
  2. (Japan)
  3. Department of Materials Science and Engineering, Nagoya Institute of Technology, Nagoya 466-8555 (Japan)
Publication Date:
OSTI Identifier:
22220828
Resource Type:
Journal Article
Resource Relation:
Journal Name: Cement and Concrete Research; Journal Volume: 54; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CALCIUM OXIDES; CEMENTS; ELECTRON MICROPROBE ANALYSIS; EVALUATION; PHYSICAL PROPERTIES; RAW MATERIALS; SILICA; SILICON OXIDES; WASTE MANAGEMENT; WASTES; X-RAY DIFFRACTION