High-Strength Concrete Masonry Walls under Concentric and Eccentric Loadings
Publication: Journal of Structural Engineering
Volume 144, Issue 6
Abstract
Masonry walls and columns are common structural members that typically resist compressive loads, with a number of such members being required to resist combined axial load and out-of-plane bending due to direct out-of-plane loads or an eccentricity of the axial compressive load. Flexural compression strength is usually greater than axial compression strength, and a reasonable experimental data set supports this assertion. However, little information exists for high-strength concrete block masonry subjected to combined axial and flexural loadings. This paper presents axial and flexural compression strengths and deformation properties of high-strength concrete block masonry. Seventy-two masonry prisms were constructed and tested to evaluate the capacity and behavior of high-strength structural masonry subject to compressive concentric and eccentric loading; both grouted and hollow prisms were used. Block strengths of 44, 56, and 67 MPa are considered. The results show an increase of flexural compression strength of 15–29% for the hollow prisms and of 70–79% for the grouted prisms compared with their axial compression strength. Measured ultimate strain varies from 0.14 to 0.19% for the axial compression and from 0.20 to 0.25% for the flexural compression. Hollow prism strength varies from 52 to 62% of the block strength, whereas grouted prism strength varies from 43 to 59% of the block strength.
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Acknowledgments
The authors acknowledge the financial Support of the São Paulo Research Foundation (FAPESP) through Grant No. 2012/22454-0; 2015/02362-2; Chimica Edile Group and Companhia Energética de São Paulo (CESP).
References
Abaza, O. A., and Salameh, A. A. (2003). “The effect of capping condition on the compressive strength of concrete hollow blocks.” An-Najah Univ. J. Res. (N. Sc), 17(1), 75–87.
ABNT (Associação Brasileira de Normas Técnicas). (2005). “Argamassa para assentamento e revestimento de paredes e tetos—Determinação da resistência a tração na flexão e a compressão–NBR 13279.” ABNT–NBR 13279, Rio de Janeiro, Brasil (in Portuguese).
ABNT (Associação Brasileira de Normas Técnicas). (2010). “Alvenaria estrutural—Blocos de concreto—Parte 2: Execução e controle de obras–NBR 15961-2.” ABNT–NBR 15961-2, Rio de Janeiro, Brasil (in Portuguese).
ABNT (Associação Brasileira de Normas Técnicas). (2011). “Alvenaria estrutural—Blocos de concreto—Parte 1: Projeto–NBR 15961-1.” ABNT–NBR 15961-1, Rio de Janeiro, Brazil (in Portuguese).
ASTM. (2010). “Standard test method for compressive strength of hydraulic cement mortar (using 2-in. or [50-mm] cube specimens).” ASTM C109/C109M-08, West Conshohocken, PA.
ASTM. (2012). “Standard test method for compressive strength of masonry prisms.” ASTM C1314, West Conshohocken, PA.
ASTM. (2014a). “Standard test method for sieve analysis of fine and coarse aggregates.” ASTM C136/C136M, West Conshohocken, PA.
ASTM. (2014b). “Standard test methods for sampling and testing concrete masonry units and related units.” ASTM C140/C140M, West Conshohocken, PA.
ASTM. (2016). “Test method for bulk density (‘unit weight’) and voids in aggregate.” ASTM C29/C29M, West Conshohocken, PA.
ASTM. (2017). “Standard specification for blended hydraulic cements.” ASTM C595/C595M, West Conshohocken, PA.
Brencich, A., and Gambarotta, L. (2005). “Mechanical response of solid clay brickwork under eccentric loading. Part I: Unreinforced masonry.” Mater. Struct., 38(2), 257–266.
Brown, R. H., and Young, J. M. (1988). “Compressive stress distribution of grouted hollow clay masonry under strain gradient.”, Clemson Univ., Clemson, SC.
BSI (British Standards Institution). (1999). “Methods of test for mortar for masonry. Determination of flexural and compressive strength of hardened mortar.” BS EN 1015-11, London.
Cavaleri, L., Failla, A., La Mendola, L., and Papia, M. (2005). “Experimental and analytical response of masonry elements under eccentric vertical loads.” Eng. Struct., 27(8), 1175–1184.
CSA (Canadian Standards Association). (2014). “Design of masonry structures.” CSA S304-14, Mississauga, ON, Canada.
Drysdale, R. G., and Hamid, A. A. (1979). “Behavior of concrete block masonry under axial compression.” J. Proc., 76(6), 707–721.
Drysdale, R. G., and Hamid, A. A. (1983). “Capacity of concrete block masonry prisms under eccentric compressive loading.” J. Proc., 80(2), 102–108.
Drysdale, R. G., and Hamid, A. A. (2008). Masonry structures: Behavior and design, 3rd Ed., Masonry Society, Boulder, CO.
Drysdale, R. G., Hamid, A. A., and Baker, L. R. (1994). Masonry structures: Behavior and design, Prentice-Hall, Englewood Cliffs, NJ.
Fortes, E. S. (2012). “Influência do capeamento e caracterização da resistência a compressão de alvenaria estrutural de blocos de concreto [Concrete block structural masonry compressive strength properties and influence of capping].” M.S. thesis, Universidade Federal de São Carlos, São Carlos, Brazil (in Portuguese).
Fortes, E. S., Parsekian, G. A., and Fonseca, F. S. (2015). “Relationship between the compressive strength of concrete masonry and the compressive strength of concrete masonry units.” J. Mater. Civ. Eng., 04014238.
Glock, C., and Graubner, C. (2003). “Simplified non-linear design of unreinforced walls.” Darmstadt Concr., 18.
Grimm, C. T. (1984). “Elastic modulus of clay brick masonry.” Paper Presented at the Reinforced and Prestressed Masonry Symp., Univ. of Edinburgh, Edinburgh, Scotland.
Hilsdorf, H. K. (1969). “An investigation into the failure mechanism of brick masonry under axial compression.” Designing, engineering and construction with masonry products, F. B. Johnson, ed., Gulf Publishing, Houston, 34–41.
Hou, J., and Liu, Y. (2007). “Strain gradient effect on the behaviour and strength of masonry.” Can. J. Civ. Eng., 34(10), 1208–1215.
Kaushik, H. B., Rai, D. C., and Jain, S. K. (2007). “Stress-strain characteristics of clay brick masonry under uniaxial compression.” J. Mater. Civ. Eng., 728–739.
Knutsson, H. H. (1991). “Vertical load bearing masonry—The Danish approach.” Masonry Int., 5(1), 23–26.
Lacika, E. M., and Drysdale, R. G. (1995). “Experimental investigation of slender prestressed brick walls.” Proc., Seventh Canadian Masonry Symp., Canada Masonry Design Centre, Mississauga, ON, Canada, 724–735.
Liu, Y., Dawe, J., and Aridru, G. (2005). “Strain gradient in masonry walls.” 10th Canadian Masonry Symp., Canada Masonry Design Centre, Mississauga, ON, Canada.
Lobato, M. (2009). “Simple method for the analysis of hollow masonry walls subjected to in plane loading.” Ph.D. thesis, Universitat Politècnica de Catalunya, Barcelona (in Spanish).
Maurenbrecher, A. H. P. (1983). “Compressive strength of eccentrically loaded masonry prisms.” Proc., 3rd Canadian Masonry Symp., Canada Masonry Design Centre, Mississauga, ON, Canada, 10/1–10/13.
Mohammed, A., and Hughes, T. G. (2011). “Prototype and model masonry behavior under different loading conditions.” Mater. Struct., 44(1), 53–65.
Morton, J., Richardson, B., and de Vekey, R. C. (1990). “Deterioration of materials.” The maintenance of brick and stone masonry structures, A. M. Sowden, ed., Spon, London, 117–139.
MSJC (Masonry Standard Joint Committee). (2013). “Building code requirements for masonry structures.” TMS 402-13/ACI 530-13/ASCE 5-13, Masonry Society, Boulder, CO.
Ojinaga, J., and Turkstra, C. (1980). “The design of plain masonry walls.” Can. J. Civ. Eng., 7(2), 233–242.
Sandoval, C., Roca, P., Bernat, E., and Gil, L. (2011). “Testing and numerical modelling of buckling failure of masonry walls.” Constr. Build. Mater., 25(12), 4394–4402.
Turkstra, C. J., and Thomas, G. R. (1978). “Strain gradient effects in masonry.” Proc., North American Masonry Conf., Univ. of Colorado, Boulder, CO, 21.
Wang, R., Elwi, A. E., Hatzinikolas, M. A., and Warwaruk, J. (1997). “Tests of tall cavity walls subjected to eccentric loading.” J. Struct. Eng., 912–919.
Yokel, F. Y., Mathey, R. G., and Dikkers, R. D. (1971). “Strength of masonry wall under compressive and transverse loads.” National Bureau of Standards, Washington, DC.
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Published In
Journal of Structural Engineering
Volume 144 • Issue 6 • June 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Jan 9, 2017
Accepted: Aug 25, 2017
Published online: Mar 30, 2018
Published in print: Jun 1, 2018
Discussion open until: Aug 30, 2018
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