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The effect of mortar type and joint thickness on mechanical properties of conventional masonry walls

  • Zengin, Basak (Graduate School of Natural and Applied Sciences, Yildiz Technical University) ;
  • Toydemir, Burak (Istanbul Gelisim University) ;
  • Ulukaya, Serhan (Department of Civil Engineering, Yildiz Technical University) ;
  • Oktay, Didem (Department of Civil Engineering, Yildiz Technical University) ;
  • Yuzer, Nabi (Department of Civil Engineering, Yildiz Technical University) ;
  • Kocak, Ali (Department of Civil Engineering, Yildiz Technical University)
  • 투고 : 2017.05.05
  • 심사 : 2018.06.25
  • 발행 : 2018.09.25

초록

Masonry walls are of a complex (anisotropic) structure in terms of their mechanical properties. The mechanical properties of the walls are affected by the properties of the materials used in wall construction, joint thickness and the type of masonry bond. The carried-out studies, particularly in the seismic zones, have revealed that the most of the conventional masonry walls were constructed without considering any engineering approach. Along with that, large-scale damages were detected on such structural elements after major earthquake(s), and such damages were commonly occurred at the brick-joint interfaces. The aim of this study was to investigate the effect of joint thickness and also type of mortar on the mechanical behavior of the masonry walls. For this aim, the brick masonry walls were constructed through examination of both the literature and the conventional masonry walls. In the construction process, a single-type of brick was combined with two different types of mortar: cement mortar and hydraulic lime mortar. Three different joint thicknesses were used for each mortar type; thus, a total of six masonry walls were constructed in the laboratory. The mechanical properties of brick and mortars, and also of the constructed walls were determined. As a conclusion, it can be stated that the failure mechanism of the brick masonry walls differed due to the mechanical properties of the mortars. The use of bed joint thickness not less than 20 mm is recommended in construction of conventional masonry walls in order to maintain the act of brick in conjunction with mortar under load.

키워드

과제정보

연구 과제 주관 기관 : Yildiz Technical University

참고문헌

  1. Amadio, C. and Rajgelj, S. (1999), "Shear behavior of brickmortar joints", Masonr. Int., 5(1), 19-22.
  2. Asteris, P.G. (2003), "Lateral stiffness of brick masonry infilled plane frames", J. Struct. Eng., 129(8), 1071-1079. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:8(1071)
  3. Asteris, P.G., Repapis, C.C., Tsaris, K.A., Trapani, F.D. and Cavaleri, L. (2015b), "Parameters affecting the fundamental period of infilled RC frame structures", Earthq. Struct., 9(5), 999-1028. https://doi.org/10.12989/eas.2015.9.5.999
  4. Asteris, P.G., Repapis, C.C., Cavaleri, L., Sarhosis, V. and Athanasopoulou, A. (2015a), "On the fundamental period of infilled RC frame buildings", Struct. Eng. Mech., 54(6), 1175-1200. https://doi.org/10.12989/sem.2015.54.6.1175
  5. ASTM C67 (2014), Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile, ASTM.
  6. Basaran, H., Demir, A., Bagci, M. and Ergun, S. (2015), "Experimental and numerical investigation of walls strengthened with fiber plaster", Struct. Eng. Mech., 56(2), 189-200. https://doi.org/10.12989/sem.2015.56.2.189
  7. Bourzam, A., Goto, T. and Miyajima, M. (2008), "Shear capacity prediction of confined masonry walls subjected to cyclic lateral loading", Struct. Eng./Earthq. Eng., 25(2), 47-59.
  8. Cunha, E.H., Guimaraes, G.N. and Carasek, H. (2001), "Influence of the mortar type on the compressive strength of the structural masonry", Proceedings of the 4th Brazilian Symposium on Mortars Technology, Brazilia.
  9. EN 1015-11 (2000), Methods of Test for Mortar for Masonry-Part 11: Determination of Flexural and Compressive Strength of Hardened Mortar, European Committee for Standardization, Brussels, Belgium.
  10. EN 1015-2 (1998), Methods of Test for Mortar for Masonry-Part 2: Bulk Sampling of Mortars and Preparation of Test Mortars, European Committee for Standardization, Brussels, Belgium.
  11. EN 1015-3 (1999), Methods of Test for Mortar for Masonry-Part 3: Determination of Consistence of Fresh Mortar, European Committee for Standardization, Brussels, Belgium.
  12. EN 13286-43 (2004), Unbound and Hydraulically Bound Mixtures-Part 43: Test Method for the Determination of the Modulus of Elasticity of Hydraulically Bound Mixtures, European Committee for Standardization, Brussels, Belgium.
  13. EN 196-1 (2005), Methods of Testing Cement-Part 1: Determination of Strength, European Committee for Standardization, Brussels, Belgium.
  14. Erdik, M., Kamer, Y., Demircioglu, M.B. and Sesetyan, K. (2012), "Report on 2012 Van (Turkey) Earthquakes", Proceedings of the International Symposium on Engineering Lessons Learned from the 2011 Great East Japan Earthquake, Tokyo, Japan, March.
  15. Foytong, P., Boonpichetvong, M., Areemit, N. and Teerawong, J. (2016), "Effect of brick types on compressive strength of masonry prisms", Int. J. Technol., 7, 1171-1178. https://doi.org/10.14716/ijtech.v7i7.4640
  16. Garrity, S.W., Ashour, A.F. and Chen, Y. (2010), "An experimental investigation of retroreinforced clay brick arches", Int. Masonr. Soc., (1), 733-742.
  17. Gumaste, K.S., Rao, N., Reddy, V.B.V. and Jagadish, K.S. (2007), "Strength and elasticity of brick masonry prisms and wallettes under compression", Mater. Struct., 42, 241-253.
  18. Kaushik, H.B., Rai, D.C. and Jain, S.K. (2007), "Stress-strain characteristics of clay brick masonry under uniaxial compression", ASCE, 19(9), 728-739.
  19. Kizilkanat, A., Kocak, A., Cosar, A. and Guney, D. (2011), Report on 23 October 2011 Van Earthquakes, Yildiz Technical University, Turkey.
  20. Kocak, A. (2013), "The effect of short columns on the performance of existing buildings", Struct. Eng. Mech., 46(4), 505-518. https://doi.org/10.12989/sem.2013.46.4.505
  21. Kocak, A. (2015), "Earthquake performance of FRP retrofitting of short columns around band-type windows", Struct. Eng. Mech., 53(1), 1-16. https://doi.org/10.12989/sem.2015.53.1.001
  22. Mohammad, G., Fonseca, F.S., Vermeltfoort, A.T., Martens, D.R.W. and Lourenco, P.B. (2017), "Strength, behavior, and failure mode of hollow concrete masonry constructed with mortars of different strengths", Constr. Build. Mater., 134, 489-496. https://doi.org/10.1016/j.conbuildmat.2016.12.112
  23. Pereira, P., Pereira, M.F.N., Ferreira, J.E.D. and Lourenco, P.B. (2011), "Behavior of masonry infill panels in RC frames subjected to in plane and out of plane loads", Proceedings of the 7thAMCM International Conference, Krakow, Poland.
  24. Porco, F., Porco, G., Uva, G. and Sangirardi, M. (2013), "Experimental characterization of "non-engineered" masonry systems in a highly seismic prone area", Constr. Build. Mater., 48, 406-416. https://doi.org/10.1016/j.conbuildmat.2013.07.028
  25. Ravula, M.B. and Subramaniam, K.V.L. (2017), "Experimental investigation of compressive failure in masonry brick assemblages made with soft brick", Mater. Struct., 50(19), 11. https://doi.org/10.1617/s11527-016-0900-y
  26. Sayin, E., Yon, B., Calayir, Y. and Gor, M. (2014), "Construction failures of masonry and adobe buildings during the 2011 Van Eartquakes in Turkey", Struct. Eng. Mech., 51(3), 503-518. https://doi.org/10.12989/sem.2014.51.3.503
  27. Schueremans, L. (2001), "Probabilistic evaluation of structural unreinforced masonry", Ph.D. Disseration, Katholieke Universiteit Leuven, Heverlee, Belgium.
  28. Slivinskasa, T., Jonaitis, B. and Zavalisc, R. (2016), Mortar Compressive Strength Estimation by Applying Various Experimental Test Methods Modern Building Materials, Structures and Techniques, MBMST.
  29. Steil, R.O., Calcada, L.M.L., Oliveira, A.L., Martins, V.C. and Prudencio Jr, L.R. (2001), "The influence of type mortar on the efficacy factor and deformability of structural concrete block masonry", Proceedings of the 4th Brazilian Symposium on Mortars Technology, Brazilia.
  30. Tomazevic, M., Lutman, M. and Bosiljkov, V. (2006), "Robustness of hollow clay masonry units and seismic behavior of masonry walls", Constr. Build. Mater., 20(10), 1028-1039. https://doi.org/10.1016/j.conbuildmat.2005.05.001
  31. Van der Pluijm, R. (1999), "Out-of-plane bending of masonry, behaviour and strength", Ph. D. Dissertation, TU Delft, the Netherlands.
  32. Vasconcelos, G. and Lourenco, P.B. (2009), "Experimental characterization of stone masonry in shear and compression", Constr. Build. Mater., 23(11), 3337-3345. https://doi.org/10.1016/j.conbuildmat.2009.06.045
  33. Xin, R., Yao, J. and Zhao, Y. (2017), "Experimental research on masonry mechanics and failure under bixial compression", Struct. Eng. Mech., 61(1), 167-175.