PORTLAND CEMENT DISPERSION BY ADSORPTION OF CALCIUM LIGNOSULFONATE

THE RESULTS OF TURBIDITY TESTS ON PORTLAND CEMENTS SUSPENDED IN AN AQUEOUS MEDIUM, WITH AND WITHOUT ADDITION OF CALCIUM LIGNOSULFONATE, AS OBTAINED WITH THE WAGNER TURBIDIMETER, SHOW THAT THE ADDITION AGENT DISPERSES THE SUSPENDED CEMENT PARTICLES. IN THE TESTS REPORTED, THE DEGREE OF INCREASE IN TURBIDITY FOR TWO TYPES OF PORTLAND CEMENT IN AN AQUEOUS MEDIUM IS SHOWN TO BE A FUNCTION OF THE AMOUNT OF ADSORBED DISPERSING AGENT. IT MAY BE CONCLUDED THAT THE MECHANISM OF DISPERSION INVOLVES THE POSITIVE ADSORPTION OF LIGNOSULFONATE ANIONS BY THE CEMENT PARTICLES. THE DETERMINATION OF AN ADSORPTION ISOTHERM FOR CALCIUM LIGNOSULFONATE AND PORTLAND CEMENT SUSPENDED IN WATER IS DESCRIBED. DATA ARE GIVEN FOR A TYPICAL CEMENT. /AUTHOR/

  • Supplemental Notes:
    • Vol 37, No 6, PP 598-600, 2 TAB, 7 REF
  • Authors:
    • Ernsberger, F M
    • France, W G
  • Publication Date: 1945-6

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  • Accession Number: 00212698
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 22 1994 12:00AM