Journal article
Flexural Tensile Strength of Concrete Block Masonry
Journal of structural engineering (New York, N.Y.), v 114(1), pp 50-66
Jan 1988
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This paper reports the results of 172 flexural tests of 790 mm by 1,590 mm (31in.×62in.) concrete block masonry walls. In addition to evaluating tensile strength both normal and parallel to the bed joint, the parameters included in the study are three sizes of block; three percentages of solid; four block strengths; two types of mortar; hollow blocks and ones grouted with three strengths of grout; and special conditions such as stack pattern, partial grouting, and empty head joints. The results confirm the orthotropic nature of masonry where for hollow blockwork, tensile strength parallel to the bed joint is two to four times higher than tensile strength normal to the bed joint. Grouting of the blockwork resulted in a greater increase of strength for tension normal to the bed joint so that these ratios are between 1 and 1.5. While the percent solid of the block has a marked influence, the tensile strength is not found to be significantly influenced by block size or block strength for the range tested. Grout strength is found to have little influence, particularly for tension normal to the bed joint. Comparison of the test values with allowable stresses recently adopted in North American building codes tends to raise questions regarding the justification for the allowable stresses for tension normal to the bed joints. Conversely, the practice of equating grout-filled hollow masonry to solid masonry tends to ignore the very large benefits derived from the continuity provided by the continuous columns of grout. A general discussion of behavior and design concludes this paper.
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Details
- Title
- Flexural Tensile Strength of Concrete Block Masonry
- Creators
- Ahmed A Hamid - Assoc. Prof., Civ. Engrg. Dept., Drexel Univ., 32nd and Chestnut St., Philadelphia, PA 19014Robert G Drysdale - Prof., Dept. of Civ. Engrg. and Engrg. Mech., McMaster Univ., Hamilton, Ontario L8S4L7
- Publication Details
- Journal of structural engineering (New York, N.Y.), v 114(1), pp 50-66
- Publisher
- American Society of Civil Engineers
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering; [Retired Faculty]
- Web of Science ID
- WOS:A1988L405500004
- Scopus ID
- 2-s2.0-0023826938
- Other Identifier
- 991019184090904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Construction & Building Technology
- Engineering, Civil