Materials and Structures

, Volume 41, Issue 10, pp 1697–1712 | Cite as

Influence of shear bond strength on compressive strength and stress–strain characteristics of masonry

  • B. V. Venkatarama ReddyEmail author
  • Ch. V. Uday Vyas
Original Article


The paper is focused on shear bond strength–masonry compressive strength relationships and the influence of bond strength on stress–strain characteristics of masonry using soil–cement blocks and cement–lime mortar. Methods of enhancing shear bond strength of masonry couplets without altering the strength and modulus of masonry unit and the mortar are discussed in detail. Application of surface coatings and manipulation of surface texture of the masonry unit resulted in 3–4 times increase in shear bond strength. After adopting various bond enhancing techniques masonry prism strength and stress–strain relations were obtained for the three cases of masonry unit modulus to mortar modulus ratio of one, less than one and greater than one. Major conclusions of this extensive experimental study are: (1) when the masonry unit modulus is less than that of the mortar, masonry compressive strength increases as the bond strength increases and the relationship between masonry compressive strength and the bond strength is linear and (2) shear bond strength influences modulus of masonry depending upon relative stiffness of the masonry unit and mortar.


Shear bond strength Masonry Compressive strength Masonry modulus Stress–strain relation 


  1. 1.
    Francis AJ, Horman CB, Jerrems LE (1971) The effect of joint thickness and other factors on compressive strength of brickwork. In: Proceedings of 2nd international brick masonry conference, stoke-on-trent, pp 31–37Google Scholar
  2. 2.
    Hilsdorf HK (1969) An investigation into the failure mechanism of brick masonry loaded in axial compression. In: Johnson FB (ed) Designing, engineering and constructing with masonry products. Gulf, Houston, pp 34–41Google Scholar
  3. 3.
    Khoo CL, Hendry AW (1975) A failure criterion for brickwork in axial compression. In: Foertig L, Gobel K (eds) Proceedings of 3rd international brick masonry conference, pp 39–145Google Scholar
  4. 4.
    Atkinson RH, Noland JL, Abrams DP (1982) A deformation theory for stack bonded masonry prisms in compression. In: Proceedings 7th international brick masonry conference, Melbourne University, Melbourne, Australia, pp 565–576Google Scholar
  5. 5.
    McNary WS, Abrams DP (1985) Mechanics of masonry in compression. J Struct Eng 111(4):857–870CrossRefGoogle Scholar
  6. 6.
    Sarangapani G, Venkatarama Reddy BV, Jagadish KS (2005) Brick–mortar bond and masonry compressive strength. J Mater Civil Eng (ASCE) 17(2):229–237CrossRefGoogle Scholar
  7. 7.
    Matthana MHS (1996) Strength of brick masonry and masonry with openings. PhD thesis, Department of Civil Engineering, Indian Institute of Science, Bangalore, IndiaGoogle Scholar
  8. 8.
    Grandet J, Javelas R, Perrin B, Thenoz B (1972) Rôle de l’ettringite dans la liaison de type mécanique entra la terre cuite et la pâte de ciment-portland. Revue Terre Cuite 48:21–28Google Scholar
  9. 9.
    Lawrence SJ, Cao HT (1987) An experimental study of the interface between brick and mortar. In: Proceedings 4th N Am masonry conference, Dublin, pp 194–204Google Scholar
  10. 10.
    Lawrence SJ, Cao HT (1988) Microstructure of the interface between brick and mortar. In: Proceedings 8th international brick/block masonry conference, Dublin, pp 194–204Google Scholar
  11. 11.
    Groot Caspar JWS (1993) Effects of water on mortar brick bond. PhD thesis, University of Delft, Delft, The NetherlandsGoogle Scholar
  12. 12.
    Sinha BP (1967) Model studies related to load bearing brickwork. PhD thesis, University of Edinburgh, UKGoogle Scholar
  13. 13.
    Thornton JC (1953) Relation between bond and surface physics of masonry units. J Am Ceram Soc 36(4):105–120CrossRefGoogle Scholar
  14. 14.
    Kampf L (1963) Factors affecting bond of mortar to brick. In: Proceedings of symposium on masonry testing, vol 320. American Society for Testing and Materials, ASTM STP, pp 127–141Google Scholar
  15. 15.
    Brick Institute of America (BIA) (1989) Portland cement–lime mortars for brick masonry. Technical Notes 8 Revised, February 1989Google Scholar
  16. 16.
    Venkatarama Reddy BV, Richardson L, Nanjunda Rao KS (2007) Enhancing bond strength and characteristics of soil cement block masonry. J Mater Civil Eng (ASCE) 19(2):164–172CrossRefGoogle Scholar
  17. 17.
    Venumadhava Rao K, Venkatarama Reddy BV, Jagadish KS (1996) Flexural bond strength of masonry using various blocks and mortars. Mater Struct (RILEM) 29(186):119–124CrossRefGoogle Scholar
  18. 18.
    Walker PJ (1999) Bond characteristics of earth block masonry. J Mater Civil Eng (ASCE) 11(3):249–256CrossRefGoogle Scholar
  19. 19.
    Venkatarama Reddy BV, Gupta A (2006) Tensile bond strength of soil–cement block masonry couplets using cement–soil mortars. J Mater Civil Eng (ASCE) 18(1):36–45CrossRefGoogle Scholar
  20. 20.
    Venumadhava Rao K, Venkatarama Reddy BV, Jagadish KS (1995) Influence of flexural bond strength on compressive strength of masonry. In: Proceedings of national conference on civil engineering materials and structures, Osmania University, Hyderabad, India, pp 103–108Google Scholar
  21. 21.
    Sarangapani G, Venkatarama Reddy BV, Jagadish KS (2002) Structural characteristics of bricks, mortars and masonry. J Struct Eng (India) 29(2):101–107Google Scholar
  22. 22.
    Gumaste KS, Venkatarama Reddy BV, Nanjunda Rao KS, Jagadish KS (2004) Properties of burnt bricks and mortars in India. Masonry Int 17(2):45–52Google Scholar
  23. 23.
    UN Report (1964) Soil–cement—its use in building. Department of Economic and Social Affairs, United Nations, New York, USAGoogle Scholar
  24. 24.
    Lunt MG (1980) Stabilized soil blocks for buildings. Overseas Building Notes, No. 184, FebruaryGoogle Scholar
  25. 25.
    Heathcote K (1991) Compressive strength of cement stabilized pressed earth blocks. Build Res Inf 19(2):101–105CrossRefGoogle Scholar
  26. 26.
    Walker PJ, Stace T (1997) Properties of some cement stabilised compressed earth blocks and mortars. Mater Struct (RILEM) 30:545–551CrossRefGoogle Scholar
  27. 27.
    Walker PJ (2004) Strength and erosion characteristics of earth blocks and earth block masonry. J Mater Civil Eng (ASCE) 16(5):497–506CrossRefGoogle Scholar
  28. 28.
    Venkatarama Reddy BV (2002) The progress of stabilised mud block construction in India. In: Proceedings of national workshop on alternative building methods, Indian Institute Science, Bangalore, India, 16–18 January, pp 84–94Google Scholar
  29. 29.
    Houben H, Guillaud H (1994) Earth construction—a comprehensive guide. Intermediate Technology Publication, LondonGoogle Scholar
  30. 30.
    Walker P, Venkatarama Reddy BV, Mesbah A, Morel J-C (2000) The case for compressed earth block construction. In: Venkatarama Reddy BV, Sinha BP (eds) Proceedings of 6th international seminar on structural masonry for developing countries. Allied Publishers India, pp 27–35Google Scholar
  31. 31.
    Venkatarama Reddy BV, Jagadish KS (1995) Influence of soil composition on the strength and durability of soil–cement blocks. Indian Concr J 69(9):517–524Google Scholar
  32. 32.
    Olivier M, Mesbah A (1987) Influence of different parameters on the resistance of earth, used as a building material. In: Proceedings of international conference on mud architecture, Trivandrum, India, 25–27 NovemberGoogle Scholar
  33. 33.
    Venkatarama Reddy BV, Walker P (2005) Stabilised mud blocks: problems prospects. In: Proceedings of international earth building conference-earthbuild2005, Sydney, Australia, 19–21 January, pp 63–75Google Scholar
  34. 34.
    Venkatarama Reddy BV, Richardson L, Nanjunda Rao KS (2007) Optimum soil grading for the soil–cement blocks. J Mater Civil Eng (ASCE) 19(2):139–148CrossRefGoogle Scholar
  35. 35.
    IS: 3495 (1992) Methods of tests of burnt building bricks–part 2: determination of water absorption. Bureau of Indian Standards, IndiaGoogle Scholar
  36. 36.
    IS: 8112 (1989) Specification for 43 grade ordinary Portland cement. Bureau of Indian Standards, IndiaGoogle Scholar
  37. 37.
    IS: 2250 (1981) Indian standard code of practice for preparation and use of masonry mortars. Bureau of Indian Standards, IndiaGoogle Scholar

Copyright information

© RILEM 2008

Authors and Affiliations

  1. 1.Department of Civil EngineeringIndian Institute of ScienceBangaloreIndia

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