MORTARS- THE EFFECT OF STRENGTH OF GRAIN SIZE AND A SECOND BONDING AGENT

EXPERIMENTS ARE DESCRIBED LEADING TO THE FOLLOWING CONCLUSIONS. WHEN CERTAIN GRADES OF SAND ARE EXCLUDED, DENSITY STRENGTH, /AND WORKABILITY OF MORTAR IMPROVE. SAND WITH AN EXCESS OF ONE GRAIN SIZE IS UNSUITABLE FOR MORTAR, CAUSING LOWER DENSITY OF SAND AND MORTAR, WHICH BECOMES TOO POROUS: INFERIOR WORKABILITY THEN REQUIRES MORE WATER, WHICH REDUCES STRENGTH. THE QUALITIES ARE BETTER WITH A MAXIMUM GRAIN SIZE OF 4MM THAN OF 8MM. A NOT EXCESSIVE PROPORTION OF FINE SAND IMPROVES DENSITY, WORKABILITY, AND USUALLY STRENGTH. WITH INCREASED GRAIN MODULUS THE DENSITY INCREASES AND MORTAR POROSITY DECREASES. A SECOND BONDING AGENT ONLY AFFECTS COMPRESSIVE STRENGTH AT A PROPORATION OF 20% OR MORE, BUT THE EFFECT INCREASES AFTER SOME WEEKS. /AUTHOR/

  • Supplemental Notes:
    • Vol 83, No 28, PP 482-489
  • Corporate Authors:

    Schweizerische Bauzeitung /Switz

    ,    
  • Authors:
    • Haller, P
  • Publication Date: 1965

Subject/Index Terms

Filing Info

  • Accession Number: 00212468
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 13 1994 12:00AM