Compressive Behavior of Unconfined and Confined Clay Brick Masonry
Publication: Journal of Structural Engineering
Volume 130, Issue 4
Abstract
Presented in this paper are the results of an investigation of the compressive behavior of grouted clay brick masonry prisms. The objective is to experimentally capture the stress–strain characteristics of unconfined and confined clay brick masonry and compare the response with that predicted with the “modified” Kent–Park stress–strain curve. Based on the experimental results, five limit states for clay brick masonry in compression are proposed, as well as equivalent stress blocks for design. Thin galvanized steel plates placed in the mortar joints during construction provided prism confinement. The variables considered included volumetric ratio of confining steel (0, ∼0.015, and ∼0.03) and the presence of machined holes within the confinement plates to improve the bond between the masonry and steel plate. It is shown that confinement plates are extremely effective in enhancing the ultimate compressive strength as well as increasing the deformation capacity of the clay brick masonry prisms. The use of confinement plates in the test increased the ultimate compression strength by 40%. Failure of the confined masonry prisms occurred simultaneously or immediately after yielding of the confinement plates. Experimentally obtained stress–strain curves agreed reasonably well with the modified Kent–Park model.
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References
Alshebani, M. M., and Sinha, S. N.(2000). “Stress–strain characteristics of brick masonry under cyclic biaxial compression.” J. Struct. Eng., 126(9), 1004–1007.
American Society for Testing and Materials (ASTM). (1999a). Annual book of ASTM standards, C1019-98a, West Conshohocken, Pa., Vol. 4.05.
American Society for Testing and Materials (ASTM). (1999b). Annual book of ASTM standards, C1314-98a, West Conshohocken, Pa., Vol. 4.05.
American Society for Testing and Materials (ASTM). (1999c). Annual book of ASTM standards, C39, West Conshohocken, Pa., Vol. 4.02.
Atkinson, R. H., and Noland, J. L. (1983). “A proposed failure theory for brick masonry in compression.” Proc., 3rd Canadian Masonry Symp., Edmonton, Alta., Canada, 5.1–5.17.
Hart, G., Noland, J., Kingsley, G., Englekirk, R., and Sajjad, N. A.(1988). “The use of confinement steel to increase the ductility in reinforced concrete masonry shear walls.” Masonry Soc. J.,7(2), T19–T42.
Hilsdorf, H. K. (1969). “An investigation into the failure mechanism of brick masonry under axial compression in designing.” Engineeringand Constructing with Masonry Products, F. B. Johnson, ed., Gulf Publishing, Houston, 34–41.
Kent, D. C., and Park, R.(1971). “Flexural members with confined con-crete.” J. Struct. Div. ASCE, 97(7), 1969–1990.
Masonry Standards Joint Committee (MSJC). (2002). “Building code requirements for masonry structures.” ACI 530-02/ASCE 5-02/TMS 402-02, American Concrete Institute; Structural Engineering Institute of the American Society of Civil Engineers; The Masonry Society, Detroit.
McNary, W. S., and Abrams, D. P.(1985). “Mechanics of masonry in compression.” J. Struct. Eng., 111(4), 857–870.
Paulay, T., and Priestley, M. J. N. (1992). Seismic design of reinforced concrete and masonry buildings, Wiley-Interscience, New York, 1992.
Priestley, M. J. N., and Bridgeman, D. O.(1974). “Seismic resistance of brick masonry walls.” Bull. New Zealand National Soc. Earthquake Eng.,7(4), 167–187.
Priestley, M. J. N., and Elder, D. M.(1983). “Stress–strain curves for unconfined and confined concrete masonry.” ACI J.,80(3), 192–201.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 130 • Issue 4 • April 2004
Pages: 650 - 661
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Jul 24, 2002
Accepted: May 14, 2003
Published online: Mar 15, 2004
Published in print: Apr 2004
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