IMPROVED METHOD OF TESTING TENSILE BOND STRENGTH OF MASONRY MORTARS

AN IMPROVED METHOD FOR FABRICATING AND TESTING COUPLETS OF BRICK AND MORTAR FOR THE DETERMINATION OF TENSILE BOND STRENGTH HAS BEEN DEVISED AND EVALUATED. THE COUPLETS WERE TESTED IN DIRECT TENSION USING STEEL PLATES RESIN-BONDED TO THE TOP AND BOTTOM SURFACES OF THE COUPLET. COMPARISON OF DATA OBTAINED IN DIRECT TENSION WITH SIMILAR DATA FROM TRIPOD TESTS (SUCH AS THOSE OF ASTM E 149) SHOW THAT THE STRENGTHS OBTAINED BY TRIPOD METHODS MAY BE AS LOW AS ONE- THIRD THOSE OBTAINED FROM DIRECT-TENSION TESTS. THE DIFFERENCE IS GREATER FOR HIGH-STRENGTH MORTARS THAN FOR LOW. THESE EFFECTS INDICATE THAT WHEN ABSOULTE RATHER THAN RELATIVE STRENGTHS ARE TO BE DETERMINED, PARTICULARLY OF HIGH TENSILE BOND STRENGTHS, THE DIRECT-TENSION TEST SHOULD BE USED. /PCA/

• Authors:
  • Kuenning, W H
• Publication Date: 0

Media Info

• Serial:
  • Portland Cement Assoc R & D Lab Bull
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Bonds; Brick; Direct shear tests; Masonry construction; Mortar; Tensile strength; Tension tests
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213631
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 195
• Files: TRIS
• Created Date: Jun 1 1970 12:00AM