Empirical Mohr‐Coulomb Failure Criterion for Concrete Block‐Mortar Joints
Publication: Journal of Structural Engineering
Volume 120, Issue 8
Abstract
Modified values for the shear bond strength and coefficient of friction in a Mohr‐Coulomb type of failure criterion for concrete block‐mortar joints in masonry are calculated using finite‐element analyses in which it is assumed that the state of stress in the joint is nonuniform. The failure loads used in these analyses are obtained from three laboratory specimens. It is shown that the shear failure in concrete block‐mortar joints in masonry can be conveniently described by a single expression that has some dependence on the modulii of elasticity of concrete blocks and joint mortar. The modified values of the parameters in a Mohr‐Coulomb equation are verified by their successful ability to estimate failure loads in two additional laboratory specimens.
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References
1.
Ali, S., and Page, A. W. (1986). “A failure criterion for mortar joints in brickwork subjected to combined shear and tension.” Masonry Int., 9, 43–54.
2.
Anand, S. C., and Yalamanchili, K. K. (1988). “A quasi‐three dimensional failure analysis of composite masonry wall subjected to seismic loads.” Proc., 8th Int. Brick/Block Masonry Conf., Elsevier Applied Science Publishers, London, England, 1205–1216.
3.
Anand, S. C., and Yalamanchili, K. K. (1993). “A numerical procedure to estimate failure loads in composite masonry walls.” Struct. Engrg. Rev., 5(1), 53–61.
4.
Anand, S. C., and Rahman, M. A. (1994). “Accurate estimation of interface shear stresses in composite masonry walls.” J. Struct. Engrg., ASCE, 120(3), 998–1015.
5.
Atkinson, R. H., Amadei, B., Sture, S., and Saeb, S. (1987). “Deformation and failure characteristics of masonry bed joints under shear loading.” Proc., 4th North Am. Masonry Conf., University of California, Los Angeles, Calif., 61.1–61.14.
6.
Atkinson, R. H., Kingsley, G. R., Saeb, S., Amadei, B., and Sture, S. (1988). “A laboratory and in‐situ study of shear strength of masonry bed joints.” Proc., 8th Int. Brick/Block Masonry Conf., Dublin, Ireland, 261–271.
7.
Atkinson, R. H., Amadei, B., Saeb, S., and Sture, S. (1989). “Response of masonry bed joints in direct shear.” J. Struct. Engrg., ASCE, 115(9), 2276–2296.
8.
“Building code requirements for concrete masonry structures.” (1985). ACI 531‐79 (revised 1983); ACI manual of concrete practice; part 5. American Concrete Institute, Detroit, Mich.
9.
“Building code requirements for reinforced concrete.” (1989). ACI 318‐89, American Concrete Institute, Detroit, Mich.
10.
Colville, J., Matty, S., and Wolde‐Tinsae, A. (1987). “Shear capacity of mortared collar joints.” Proc., 4th North Am. Masonry Conf., University of California, Los Angeles, Calif., 60.1–60.15.
11.
Desai, C. S., Zaman, M. M., Lightner, J. G., and Siriwardane, H. J. (1984). “Thin‐layer element for interfaces of joints.” Int. J. Numerical and Analytical Methods in Geomech., 8, 19–43.
12.
Hamid, A. A., Drysdale, R. G., and Heidebrecht, A. C. (1979). “Shear strength of concrete masonry joints.” J. Struct. Div., ASCE, 105(7), 1227–1240.
13.
Hegemier, G. A., Arya, S. K., Krishnamoorthy, G., Nachbar, W., and Furgerson, R. (1978). “On the behavior of joints in concrete masonry.” Proc., North Am. Masonry Conf., Univ. of Colorado, Boulder, Colo., 4.1–4.22.
14.
Hofmann, P., and Stöckl, S. (1986). “Tests on the shear bond strength in bed‐joints of masonry.” Masonry Int., 9, 1–15.
15.
Nuss, L. K., Noland, J. L., and Chinn, J. (1979). “The parameters influencing shear strength between clay masonry units and mortar.” North Am. Masonry Conf., Univ. of Colorado, Boulder, Colo., 13.1–13.27.
16.
Pluijm, R. v. d. (1993). “Shear behavior of bed joints,” Proc., 6th North Am. Masonry Conf., Philadelphia, Pa., 125–136.
17.
Rahman, M. A. (1989). “Analytical investigations of the behavior and failure of composite masonry walls,” PhD dissertation, Clemson University, Clemson, S.C.
18.
Rao, M. (1989). “Experimental evaluation of composite masonry walls subjected to axial and shear loads,” MSc thesis, Clemson University, Clemson, S.C.
19.
Recommended practice for engineered brick masonry. (1975). Brick Institute of America, McLean, Va.
20.
Stöckl, S., Hofmann, P., and Mainz, J. (1990). “A comparative finite element evaluation of mortar joint shear tests.” Masonry Int., 3(3), 101–104.
21.
Yalamanchili, K. K., and Anand, S. C. (1991). “Three dimensional failure analysis of composite masonry walls subjected to vertical and horizontal loads.” Proc., Struct. Congress '91, ASCE, New York, N.Y. 450–453.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 120 • Issue 8 • August 1994
Pages: 2408 - 2422
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Jul 20, 1992
Published online: Aug 1, 1994
Published in print: Aug 1994
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