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Behaviour of Post-tensioned Interlocking Bricks for Masonry Wall Subjected to Out-of-plane Loads


  • Department of Civil Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia


Objectives: To investigate the post-tensioning behavior of the soil-cement interlocking bricks used in masonry wall subjected to out-of-plane loads. Methods/Statistical Analysis: Three types of wall specimen were tested with post-tensioned forces of 50% and 65% of maximum post-tension force. The wall specimens were tested horizontally after applying the post-tensioning force by applying two vertical point loads distributed equally along the wall. Findings: Results showed that service load and ultimate load for W1 are 6.2 KN and 9.5 KN respectively. The mentioned loads for W2 were 7 KN and 11.8 KN respectively. The maximum deflection occurred in W1 and W2 was 69 mm and 32 mm respectively. On the other hand, the service load and ultimate load for the post-tensioned wall with two tendons were found to be 14 KN and 20 KN respectively. The deflection in both cases was approximately same which it reaches up to 59mm. It can be concluded that post-tensioning level of interlocking bricks should be always from 60% to 65% in order to get optimum results for service ability and ultimate limit states. Application/Improvements: The post-tensioned wall developed using soil-cement interlocking blocks can be used in reinforced and post-tensioned masonry applications instead of conventional brick masonry. The post tensioning enhances the performance of brick masonry.


Deflection, Masonry Wall, Post-Tensioning, Soil-Cement Interlocking Bricks, Ultimate Load

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  • Hamid A, Chukwunenye AO. Compression behavior of concrete masonry prisms. Journal of Structural Engineering. 1986; 112(3):604–13. Crossref
  • Ganesan TP, Ramamurthy K. Behavior of concrete hollowblock masonry prisms under axial compression. Journal of Structural Engineering. 1992; 118:1751–69. Crossref
  • Yoon KC, Ingham JM. Experimental in-plane shear strength investigation of reinforced concrete masonry walls. Journal of Structural Engineering. 2006; 132:400–8. Crossref
  • Rodriguez R, Hamid AA, Larralde J. Flexural behaviour of post tensioned concrete masonry walls subjected to out of plane loads. ACI Structural Journal. 1998; 95(1):61–9.
  • Popehn JRB, Schultz A. Influence of imperfections on the out-of-plane flexural strength of post-tensioned masonry walls. Construction and Building Materials. 2013; 41:942–9. Crossref
  • Rajagopal S, Prabavathy S. Investigation on the seismic behavior of exterior beam–column joint using T-type mechanical anchorage with hair-clip bar. Journal of King Saud University-Engineering Sciences. 2015; 27(2):142–52.Crossref
  • ASTM C140/ 140M-15a. Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units. PA: ASTM International; 2015.
  • ASTM C1388-14. Standard Test Method for Compressive Strength of Masonry Prisms. West Conshohocken, PA: ASTM International; 2014.
  • ACI 318-08. Building Code Requirements for Reinforced Concrete. American Concrete Institute. 2011.


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