DATA ON THE BINARY SYSTEM 3CAO. AL203-NA20. 8CAO. 3AL203 WITHIN THE SYSTEM CAO-AL203-NA20.

CONWICKE AND DAY SHOWED THAT PARTIAL SOLID SOLUTION OCCURS IN THE SYSTEM C3A-NC8A3 AT TEMPERATURES BELOW THE LIQUIDS. THEIR RESULTS INDICATED A MARKED SIMILARITY BETWEEN THE X-RAY POWDER DIFFRACTION DATA FOR A PREPARATION CONTAINING MORE THAN 3.% NA20 AND THE DATA GIVEN BY MOORE FOR A NEW PHASE IN PORTLAND CEMENTS. THE PRESENT WORK WAS ALMOST COMPLETE WHEN CONWICKE AND DAYS PAPER WAS PUBLISHED. IT GENERALLY CONFIRMS THEIR RESULTS BUT GIVES MORE INFORMATION ON THE SOLID SOLUTION. AT THE LIMIT OF SOLID SOLUTION AT 1,350 DEGREES C, THE SODIUM CALCIUM ALUMINATE WHICH IS FORMED HAS THE COMPOSITION 91.0 MOL% C3A, 9.0MOL%N3A AND HAS BEEN INDEXED ON AN ORTHORHOMBIC UNIT CELL WITH A-15.314,B- 15.394,C-15.137A. /RRL/A/

• Supplemental Notes:
  • Vol17, No 57, PP171-176, 3FIG, 1TAB, 7REF
• Authors:
  • Fletcher, K E
  • Midgley, H G
  • Moore, A E
• Publication Date: 1965-12

Media Info

• Serial:
  • Magazine Concrete Research /UK/

Subject/Index Terms

• TRT Terms: Aluminates; Calcium; Calcium compounds; Crash investigation; Diffraction; Lattices; Oxides; Portland cement; Sodium compounds; Solidification; Solids; Solutions (Chemistry); Studies; Temperature; Tricalcium aluminate; X rays
• Uncontrolled Terms: X-ray diffraction
• Old TRIS Terms: Binary systems; Calcium aluminates; Orthorhombic lattice; Solid phase; Solid solution
• Subject Areas: Highways; Materials; Safety and Human Factors;

Filing Info

• Accession Number: 00212222
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Jun 15 1994 12:00AM