Parametric study of sliding mode fracture in structural plain cement concrete for various sizes of beams

  • Authors

    • Bhavanichowdary T K L University
    • S. Padmaja
    • M. Saritha
    • M. Vinod Kumar
    2018-09-25
    https://doi.org/10.14419/ijet.v7i2.18.9920
  • Doubly Centered Notch, Fracture Mechanics, Mode II Fracture, Notch Depth Ratios, Stress Intensity Factor.

  • Fracture mechanics a part of solid mechanics deals with the crack initiation and propagation under certain loading conditions, as we know at ultimate load, the maximum shear stress is relatively larger than the shear strength in existence of compressive stress, which eventually results in shear failure. Under this criteria, failure is mode II which we can state that as the sliding mode. In this current research paper, an experimental investigation is carried out to study the behavior of plain cement concrete beams subjected to four point loading. Three different sizes of beams with Doubly Centered Notch (DCN) are used to examine the consequence of stress intensity factor and fracture energy with diversified notch depth ratios with a constant position of the notch from a center of the beam.

  • References

    1. [1] Agarwal, B.D. and Giare, G.S., “Fracture toughness of short-fiber composites in Modes-I and IIâ€, Engineering Fracture Mechanics, Vol. 15, No. 1, 1981, pp.219-230. https://doi.org/10.1016/0013-7944(81)90119-3.

      [2] BazantZ.,p, and Pfeiffer, P.A., “Shear fracture tests of concreteâ€, materials and structures (RKLEM) , 1984, vol. 19, pp.111-121.

      [3] Watkins, J. and Liu, K.L.W., “A Finite Element Study of Short Beam Test Specimens under Mode-II loadingâ€, The International Journal of Cement Composites and Light Weight Concrete, Vol.7, No.1, Feb.1985, pp.39-47. https://doi.org/10.1016/0262-5075(85)90025-9.

      [4] Bazant , Z.,p, and Pfeiffer, P.A., “Tests on shear fracture and strain softening in concreteâ€, proceedings of second symposium on interaction of Non-nuclear Munition with structures Florida, USA, April 1985, pp. 254-264.

      [5] Davies, J., Yim, C.W.A and Morgan, T.G., “Determination of Fracture parameters of punch through shear specimensâ€, The International Journal of Cement Composites and Light weight Concrete, Vol. 9, No. 1, Feb. 1987, pp. 33-41. https://doi.org/10.1016/0262-5075(87)90035-2.

      [6] BhaskarDesai. V, “Some studies on Mode - II fracture and stress – strain behavior in shear of cementitious materialsâ€, Ph.D thesis, Indian Institute of Science, Bangloreâ€.

      [7] PrakashDesayi, Raghu Prasad .B.K, and BhaskarDesai. V, “Experimental determination of KIIc from compliance and fracture energyâ€, proceedings national seminar on Aerostructures, organized by IIT, Kanpur, India, 29-30, Dec, 1993, pp. 33-34.

      [8] Prakashdesayi, B.K.Raghu Prasad and V.Bhaskar Desai, “Mode – II fracture of cementitious materials- part – I: Studies on specimens of some new geometriesâ€, Journal of Structural Engineering, Vol.26, No.1, April 1999, pp.11-18.

      [9] Prakashdesayi, B.K.Raghu Prasad and V.Bhaskar Desai, “Mode – II fracture of cementitious materials- part – II: Fracture toughness of cement paste, mortar, concrete and no-fines concrete.Journal of structural engg Vol. 26, No. 1, April 1999, pp. 19-27.

      [10] Prakashdesayi, B.K.Raghu Prasad and V.Bhaskar Desai, conducted Mode-II fracture of cementitious materials- part-IV: Fracture toughness, shear strength and slip of fiber reinforced cement mortar and concrete.Journal of structural engg. Vol. 26, No. 4, Jan 2000, pp. 267-273.

      [11] Prakashdesayi, B.K.Raghu Prasad and V.Bhaskar Desai, conducted Mode-II fracture of cementitious materials- part-V: Size effect on fracture toughness shear strength and slip of cement mortar and concrete reinforced with and without fibers.Journal of structural engg, Vol, 27, No. 2, July 2000, pp.99-104.

      [12] Owens, P.L. (1993). “Light weight aggregates for structural concrete,†Structural Light weight Aggregate Concrete, Chapman & Hall, London, pp.1-18.

      [13] ChiJM,Huang,R,Yang,C.C,andChang.J.J,â€Effect of aggregate properties on the strength and stiffness of light weight concreteâ€.Cement& Concrete Composites 2003. https://doi.org/10.1016/S0958-9465(02)00020-3.

      [14] L. Cavaleri N. Miraglia and M. Papia, “Pumice Concrete for structural wall panelsâ€, Engineering structures, Vol. 25, No. 1,Jan 2003, pp. 115-125. https://doi.org/10.1016/S0141-0296(02)00123-2.

      [15] Dr. V. Bhaskar Desai, Dr.BLP.Swamy N. Sivalingarao, â€A Brief study on strength properties of partially replaced emery stone aggregate concrete with the partial replacement of cement by double blended admixturesâ€, Research journal of Engineering and Tech, January-March 2011, vol.4, No.1.

      [16] Bazant, Z.P., and Kazemi, M.T.â€Determination of Fracture Energy Process Zone Length and Brittleness Number from Size Effect, with Application to Rock and Concreteâ€, Journal of Fracture, 44: 111-131.

      [17] Griffith, A.A. 1921. The Phenomenon of Rupture and Flow in Solids, Philosophical Transactions of Royal Society of London, A221: 163-197.https://doi.org/10.1098/rsta.1921.0006.

      [18] Iosipescu, N., 1967. New Accurate Procedure for Single Shear Testing of Metals, Jl. of Materials, 2: 537-566.

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    T, B., Padmaja, S., Saritha, M., & Vinod Kumar, M. (2018). Parametric study of sliding mode fracture in structural plain cement concrete for various sizes of beams. International Journal of Engineering & Technology, 7(4), 2603-2608. https://doi.org/10.14419/ijet.v7i2.18.9920