EFFECTS OF CARBON DIOXIDE ON HYDRATED CEMENT AND CONCRETE

CARBONATION OF CONCRETE INCREASES STRENGTH AND REDUCES VOLUME CHANGES AND PERMEABILITY. CARBONATION OF HYDRATED CEMENT COMPOUNDS PROCEEDS FURTHER THAN MERELY CHANGING THE LIBERATED CALCIUM HYDROXIDE TO CALCIUM CARBONATE, BUT DOES DECOMPOSE EACH OF THE FOUR MAJOR COMPOUNDS TO LIMESTONE AND HYDROUS SILICA, OR, HYDROUS ALUMINA OR HYDROUS IRON. THE SILICA MADE INSOLUBLE IN HYDROCHLORIC ACID BY CARBONATION IS ROUGHLY PROPORTIONAL TO THE EXTENT OF CARBONATION OF THE HYDRATED CEMENT OR CEMENT SILICATE COMPOUNDS. THIS SEPARATED SILICATE IS IN AN AMORPHOUS FORM CAPABLE OF COMBINING WITH ALKALIES AND MIGHT CONTRIBUTE TO THE ALKALI-AGGREGATE REACTION. /AUTHOR/

  • Supplemental Notes:
    • pp 96-98, 1 TAB, 9 REF
  • Authors:
    • Meyers, S L
  • Publication Date: 1949-1

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Filing Info

  • Accession Number: 00213780
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 26 1970 12:00AM