Closed-Form Equations for Hardening of Sand-Lime Mortar Joints
Publication: Journal of Engineering Mechanics
Volume 127, Issue 6
Abstract
Experimental and analytical investigations have shown that sand-lime mortar joints harden in a nonlinear manner after initial yield; then upon reloading, respond in a linear elastic manner under certain conditions of thrust and moment. This paper presents a method to predict this behavior using an exponential hardening model for the sand-lime mortar. Equations are developed to predict: (1) the joint rotation and shortening for three unique stress states; and (2) the moment/thrust yield conditions under which linear elastic responses are possible upon reloading the joint after the mortar hardens. Results show that joint rotation and shortening are influenced greatly by the thrust intensity and eccentricity. Once the material yields, the nonlinear hardening characteristics of the mortar significantly affect the joint's behavior under loading. Plots of moment/thrust hardening surfaces are presented for various loading conditions of the joint. The results are consistent with earlier findings obtained by using a nonlinear finite element model of a sand-lime mortar joint.
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References
1.
ADINA—Automatic Dynamic Incremental Nonlinear Analysis; release 6.1. (1995). ADINA R & D, Inc., Watertown, Mass.
2.
Boothby, T. E., and Rosson, B. T. ( 1999). “Elasto-plastic hardening and shakedown of masonry arch joints.” Meccanica, 34, 71–84.
3.
Boothby, T. E. ( 1998). “Response of sand-lime mortar joints to variable eccentric thrust.” Masonry Soc. J., 15(2), 23–32.
4.
Drucker, D. C., and Prager, W. ( 1952). “Soil Mechanics and Plastic Analysis or Limit State.” Quarterly Applied Mathematics, 10, 157–165.
5.
Rosson, B. T., and Boothby, T. E. ( 1998). “Hardening and shakedown of masonry arch joints.” 2nd Int. Conf. on Arch Bridges, A. Sinopoli, ed., A. A. Balkema Publishers, Brookfield, Vt., 155–161.
6.
Rosson, B. T., Boothby, T. E., and Soyland, K. ( 1996). “Response of lime mortar joint arches to moving loads.” Proc., Structures Congress XIV, ASCE, Chicago, Ill., 223–232.
7.
Rosson, B. T., Soyland, K., and Boothby, T. E. ( 1998). “Inelastic behavior of sand-lime mortar joint masonry arches.” Engrg. Structures, 20(1-2), 14–24.
8.
Soyland, K. ( 1996). “The influence of lime mortar on the system behavior of masonry arched bridges.” MS thesis, Univ. of Nebraska-Lincoln, Lincoln, Neb.
9.
Soyland, K., Rosson, B. T., and Boothby, T. E. ( 1995). “The influence of mortar properties on the system behavior of masonry arch bridges.” 1st Int. Conf. on Arch Bridges, C. Melbourne, ed., Thomas Telford Services Ltd., London, 355–364.
10.
Suelter, J. L. ( 2000). “Response of sand-lime mortar joints to eccentric thrust using an exponential hardening model.” MS thesis, Univ. of Nebraska-Lincoln, Lincoln, Neb.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 127 • Issue 6 • June 2001
Pages: 574 - 581
History
Received: Sep 15, 1999
Published online: Jun 1, 2001
Published in print: Jun 2001
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