AERATION CAUSE OF FALSE SET IN PORTLAND CEMENT

EVIDENCE BASED ON EXTRACTIONS WITH WATER AND THE RATES AT WHICH CEMENTS COMBINE WITH CALCIUM CHLORIDE IS PRESENTED TO SHOW THAT CEMENTS WHICH DEVELOP FALSE SET UPON AERATION DO SO BECAUSE THE REACTIVITY OF THE CALCIUM ALUMINATES IS DECREASED SUFFICIENTLY TO PERMIT DEHYDRATED GYPSUM IN THE CEMENT TO PRECIPITATE AS GYPSUM IN THE CEMENT-WATER PASTE. /AUTHOR/

• Supplemental Notes:
  • Vol 58, pp 1044-1050, 3 TAB, 10 REF
• Corporate Authors:

  American Mining Congress

  Ring Building, 1200 18th Street, NW
  Washington, DC  United States  20036

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Hansen, W C
• Publication Date: 1955

Media Info

• Serial:
  • ASTM Proceedings
  • Publisher: American Society for Testing and Materials (ASTM)

Subject/Index Terms

• TRT Terms: Aeration; Aluminates; Calcium; Calcium chloride; Cement; Cement paste; Concrete hardening; Gypsum; Portland cement
• Old TRIS Terms: Calcium aluminates; False set
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213883
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 1 1971 12:00AM