RESISTANCE TO FROST AND DE-ICING SALTS AND WEARING PERFORMANCE OF CONSTRUCTIONAL LIGHTWEIGHT CONCRETE /IN GERMAN/

TESTS WERE CARRIED OUT TO DETERMINE WHETHER THE MEASURES APPLIED TO PROTECT HEAVY CONCRETE FROM DAMAGE BY FROST AND DE-ICING SALTS ARE ALSO SUITABLE FOR LIGHTWEIGHT CONCRETES USED IN CURBSTONES, FOOT BRIDGES, ETC. THREE MIXTURES OF EXPANDED SHALE AND EXPANDED CLAY, ONE OF WHICH WAS MANUFACTURED WITH AN ADMIXTURE OF AIR-ENTRAINING AGENTS, WERE SUBJECTED TO FREEZING-THAWING TESTS, AND THE STRENGTH, WEARING RESISTANCE AND FREEZING-THAWING RESISTANCE OF FRESH CONCRETE WERE DETERMINED. THE REPEATED THAWING OF A FROZEN LAYER CAUSED FAR MORE DAMAGE TO THE LAYER OF FINE MORTAR ABOVE IT THAN THE GREATER STRESS OF FREEZING AND THAWING A SALT SOLUTION. IT WAS ESTABLISHED THAT ARTIFICIALLY INTRODUCED AIR VOIDS LARGELY PREVENT DAMAGE FROM FROST AND DE-ICING SALT, BUT THAT THE ADMIXTURE OF AIR-ENTRAINING AGENTS DEPENDS ON THE PORE STRUCTURE OF THE LIGHTWEIGHT AGGREGATE. /FG/RRL/

  • Supplemental Notes:
    • Vol 34, No 5, PP 225-237, 15 PHOT, 6 TAB, 18 REF
  • Authors:
    • Weigler, H
    • Karl, S
  • Publication Date: 1968

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00212834
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Apr 7 1971 12:00AM