FREEZING AND THAWING TESTS OF MASONRY AND EXPOSED AGGREGATE CONCRETE PANELS

KNOWLEDGE CONCERNING DURABILITY OF BRICK MASONRY AND EXPOSED AGGREGATE CONCRETE WAS REQUIRED TO DETERMINE SUITABILITY OF MATERIALS FOR TUNNEL PORTAL STRUCTURES LOCATED HIGH IN THE MOUNTAINS AND, THEREFORE, SUBJECT TO SEVERE WEATHERING. FREEZING AND THAWING TESTS WERE PERFORMED ON PANELS PREPARED FOR THE COLORADO DEPARTMENT OF HIGHWAYS BY COMMERCIAL MANUFACTURERS. FREEZING WAS BY REFRIGERATED AIR AT 0 DEG F AND THAWING WAS IN WATER AT 50 DEG F. RESULTS DETERMINED AFTER 500 CYCLES SHOW ALL EXPOSED AGGREGATE PANELS AND 2 OF 3 BRICK PANELS REMAINED IN EXCELLENT CONDITION. ONE BRICK MASONRY PANEL DEVELOPED RANDOM CRACKS AT 380 CYCLES, APPARENTLY CAUSED BY ABSORPTION CHARACTERISTICS OF THE BRICK. /AUTHOR/

  • Supplemental Notes:
    • Rept No. C-1265, 18 PP
  • Corporate Authors:

    Bureau of Reclamation /US

    /Concrete & Structural Branch
    ,   USA 
  • Authors:
    • Porter, L C
  • Publication Date: 1967-11

Subject/Index Terms

Filing Info

  • Accession Number: 00237460
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 22 1994 12:00AM