Structural Behaviour of Mortar-Less Interlocking Masonry System under Eccentric Compressive Loads

Abstract

Interlocking masonry wall as a structural load-bearing element is still unexplored simply because its basic behaviour and complete response to failure is not known. In addition, there is no design code available to provide necessary guidance for a safe design of interlocking walls. This paper provides an attempt to ascertain the structural response of interlocking masonry walls compared to conventional bonded walls. Individual block units, prisms and full-scale wall specimens were tested under the action of concentric and eccentric compressive loads. The effect of different patterns of reinforced concrete stiffeners has also been investigated. The test results were discussed in terms of wall efficiency, strength capacity, deflection, strain distribution, cracking patterns and failure modes. The results indicate a promising future use of the interlocking masonry system in construction.

Keywords

interlocking block reinforced concrete stiffener masonry wall and wall efficiency failure mode

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References

Thallon

(1983). “Dry-stack block, USA”, Fine Homebuilding Magazine, August, pp. 50–57.

Haener (1984). Stacking Mortarless Block System, Engineering Design Manual by lkinson Engineering, Inc. Hamilton, Ontario.

Cetholic (1978). “Mortarless masonry – the mecano system”, Housing Science, Vol. 12, No. 2, pp. 145–157.

Harris

H.G.

and Hamid

A.A.

(1992). “Development of new interlocking and mortarless block masonry units for efficient building systems”, Proceeding of The Sixth Canadian Masonry Symposium, Drexel University, Saskatoon, Canada, June.

Marzahn

(1999). “Investigation on the initial settlement of dry-stacked masonry under compression”, LACER, No. 4, pp. 253–269.

Anand

K.B.

and Ramamurthy

(2000). “Development and performance evaluation of interlocking block masonry”, Journal of Architectural Engineering, ASCE, Vol. 6, No. 2, pp. 45–51.

Anderson

G.L.

and Beal

D.L.

(2001). “Smart masonry-an innovative dry-stack concrete masonry system”, 20^th Biennial Concrete Institute of Australia Conference, Perth, July.

Waleed

A.T.

Jaafar

M.S.

Kadir

Abdul M.R.

Abang

A.A.A.

Trikha

D.N.

and Amad

M.S.N.

(2004). “Development of an innovative interlocking load bearing hollow block system in Malaysia”, Construction and Building Materials, Vol. 18, pp. 445–454.

Ahmad

H.A.

Waleed

A.T.

Jaffar

M.S.

Jamaloddin

and Kadir

Abdul M.R.

(2005). “Shear characteristic of interlocking mortarless block masonry joints”, Masonry International -Journal of the British Masonry Society, Vol. 18, No. 1, pp. 39–44.

10.

Jaafar

M.S.

Waleed

A.T.

Amad

M.S.N.

Kadir

Abdul M.R.

and Abang

A.A.A.

(2006). “Strength correlation between individual block, prism and basic wall panel for load bearing interlocking mortarless hollow block masonry”, Construction and Building Materials, Vol. 20, pp. 492–498

11.

British Standard Institution (1992). BS5628: Part 1: 1992, Code of Practice for Use of Masonry, Part 1, Structural Use of Unreinforced Masonry.

12.

Hendry

A.W.

(1991). Structural Masonry, Macmillan London.

13.

Shrive

N.G.

(1982). “The failure mechansim of face-shell bedded (ungrouted and un-reinforced) masonry”, International Journal of Masonry Construction, Vol. 3, No. 3, pp. 115–128.

14.

Page

A.W.

and Shrive

N.G.

(1990). “Concentrated loads on hollow concrete masonry”, ACI Structural Journal, Vol. 87, No. 4, pp. 436–444.

15.

Hatzinikolas

Longworth

and Warwaruk

(1978). Concrete Masonry Walls, Structural Engineering Report No. 70, University of Alberta, September.

16.

Felix

Y.Y.

Robert

G.M.

and Robert

D.D.

(1970). Compressive Strength of Slender Concrete Masonry Walls, National Bureau of standards, Institute of Applied Technology, Building Science series 33, Washington D.C., Dec