NEW CEMENT USES FLY ASH, COSTS LESS TO MAKE

A new cement material is described which incorporates some 70 percent of fly ash, is superior to portland cement on a number of counts, generates considerably less pollution during production, and is cheaper to make. The new material is made by heating a mixture of 40 parts of fly ash and 60 parts limestone to 1430 deg. c, and rapidly quenching the melt in cold water. The resulting solid, crushed to a very fine powder and mixed with additional fly ash, is tradenamed LTM (Lient Trief Mixed). LTM 300 is considered a direct counterpart of the P 300 grade of portland cement, and LTM 400 is equivalent to the higher P 400. LTM cures more rapidly than conventional cements, generates less heat during curing, has superior resistance to sea water, and has an extended shelf life.

• Corporate Authors:

  American Chemical Society

  1155 16th Street, NW
  Washington, DC  United States  20036
• Publication Date: 1976-4-5

Media Info

• Features: Photos;
• Pagination: p. 16
• Serial:
  • Chemical and Engineering News
  • Volume: 54
  • Issue Number: 14
  • Publisher: American Chemical Society

Subject/Index Terms

• TRT Terms: Cement; Corrosion resistance; Costs; Culverts; Fly ash; Hydraulics; Limestone; Pollution; Portland cement concrete; Seawater; Service life
• Old TRIS Terms: Culvert hydraulics; Shelf life
• Subject Areas: Bridges and other structures; Design; Environment; Finance; Highways; Materials;

Filing Info

• Accession Number: 00136321
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 16 1976 12:00AM