MICROSTRUCTURE OF CALCIUM SILICATE HYDRATES

WHILE CONSIDERABLE ATTENTION AND STUDY HAVE BEEN DEVOTED TO THE STRUCTURE AND MORPHOLOGY OF CALCUM SILICATE HYDRATE, NEITHER THE INTERRELATION BETWEEN THE VARIOUS OBSERVED PARTICLE SHAPES NOR THEIR ROLE IN FORMATION OF THE FINAL MICROSTRUCTURE OF THE HARDENED PASTE HAS BEEN ESTABLISHED. THE DIVISION OF BUILDING RESEARCH OF THE CANADIAN NATIONAL RESEARCH COUNCIL HAS RECENTLY BEEN STUDYING MORPHOLOGICAL CHANGES IN THE HYDRATION PRODUCTS OF THE VARIOUS PURE CONSTITUENTS, SINGLY AND IN COMBINATIONS, AS WELL AS OF CEMENT PASTE. IN THE WORK REPORTED HERE, MORPHOLOGICAL AND MICROSTRUCTURAL CHANGES WITH TIME OF A HYDRATING TRICALCIUM SILICATE WERE STUDIED BY ELECTRON MICROSCOPY AND X-RAY DIFFRACTION. PRODUCTS CONSISTED OF AMORPHOUS MATERIAL, CRUMPLED FOILS, FIBROUS PARTICLES, AND PLATES. THE PLATES APPEAR TO HAVE AN UNDERLYING MESH STRUCTURE OF INTERLOCKING FIBERS, THE SPACE BETWEEN THESE HAVING BEEN FILLED WITH A LIME-RICH CALCIUM SILICATE HYDRATE OR WITH CALCIUM HYDROXIDE. THE PLATY MORPHOLOGY OCCURS FOR THE SILICATE HYDRATES AS WELL AS FOR CALCIUM HYDROXIDE. THIS STUDY INCLUDED ALSO PORTLAND CEMENT PASTE TO ALLOW A COMPARISON WITH THE TRICALCIUM SILICATE SYSTEM. CONCLUSIONS ARE GIVEN REGARDING MECHANICAL PROPERTIES OF THESE CEMENTING SYSTEMS.

  • Availability:
  • Supplemental Notes:
    • Vol 1, No 1, PP 13-25, 1 FIG, 16 PHOT, 20 REF
  • Authors:
    • Ciach, T D
    • Gillott, J E
    • Swenson, E G
    • Sereda, P J
  • Publication Date: 1971-1

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Filing Info

  • Accession Number: 00214017
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 3 1971 12:00AM