Improving the Shear Strength of Lightweight RC Thick Hollow Core Slab Made of Recycled Materials

  • Authors

    • Yousif Nassif Sabr
    • Dr. Husain Khalaf Jarallah
    • Dr. Hassan Issa Abdul Kareem
    2018-11-28
    https://doi.org/10.14419/ijet.v7i4.20.26143
  • Hollow core slab, lightweight concrete, improving shear strength, shear stress, crushed clay brick
  • This research paper focused on the experimental study about shear behavior of reinforced concrete thick hollow core slab. The reduction hollow length technique was used to resist the shear failure that occurred in the thick hollow core slab. The three hollows were used in tested slabs. The effect of reduction in the length of hollow in the shear region as well as the sides hollow was considered in the shear behavior of the tested hollow core slab. The recyclable material was used to a get of lightweight concrete, where the crushed clay brick was used as a coarse aggregate instead of the gravel. The test was done by applying two line load. The specimens were tested up to failure. The experimental results showed an increase in the shear strength up to 109.52% and an increase in the deflection up to 24% compared with the hollow core slab specimen that all hollow core is accessible. From the experimental result of this investigation can avoid the shear failure subsequently the load devolves from the shear region to the flexural region with change the mode of failure from shear failure to flexural-shear failure.

     

     

     
  • References

    1. [1] Hawkins, N. M., and S. K. Ghosh. "Shear Strength of Hollow Core Slabs" PCI Journal 51, 2006.

      [2] Stephen, C., "Hollow Core Manufacture and Factory Design", the Indian Concrete Journal 2013.pp 20-25.

      [3] Cuenca, E. and Serna, P., "Failure Modes and Shear Design of Prestressed Hollow Core Slabs Made of Fiber-Reinforced Concrete", ELSEVIER, 15 June 2012.

      [4] Wu, Y., Cheng S., El-Ragaby, A. and Mehta, A., "Effectiveness of a Novel Technique in Strengthening Web-Shear Capacity of Prestressed Hollow Core Slabs Using Externally Bonded FRP Sheets", American Society of Civil Engineers (ASCE), 2016.

      [5] Slate, F. O., Nilson, A. H. and Martinez, S., "Mechanical Properties of High Strength Lightweight Concrete", ACI Journal, Proceedings V. 83, No. 4, July-august 1986, pp.606-613.

      [6] Mays, G. C. and Barner, R. A., "The Performance of Lightweight Aggregate Concrete Structure in Service", the Structure Engineer, Vol. 69, No 20, 15 October 1994, pp. 351-360.

      [7] ACI Committee 213R-03, "Guide for Structure Lightweight-Aggregate Concrete", American Concrete Institute, USA, 2003, pp.1-37.

      [8] ACI Committee 318, "Building Code Requirements for Structural Concrete (ACI 318-M14)", American Concrete Institute, Detroit, USA, 2014.

      [9] Rudollph Szilard, Dr.-Ing., P.E., (2004), "Theories and Application of Plat Analysis", New Jersey, U.S.A, pp.6.

      [10] ASTM A615, "Standard Specification for Deformed and Plain Carbon Structural Steel Bars for Concrete Reinforcement", Annual Book of ASTM Standards, Vol.01, No.02, 2005.

      [11] ASTM C 143-03, "Standard Test Method for Slump of Hydraulic-Cement Concrete", Annual book of ASTM standards.

      [12] BS 1881-Part 116-2000, ''Method for Determination of Compressive Strength of Concrete Cubes'', British Standards Institute BSI, London, 2000,11p.

      [13] ASTMC39, "Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens" p.5, 2001.

      [14] ASTM C496-04 "Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens" Annual Book of American Society for Testing and Material Standards, Vol. 04.02 Concrete and Aggregate, West Conshohocken, PA, United States, pp.5.

      [15] ASTM C78, "Standard Test Method for Flexural Strength of Concrete Using Simple Beam with Two Points Loading", Annual Book of ASTM Standard, Vol. 04, No.02, 2002.

      [16] ASTM C469, "Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression", p5, 2002.

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  • How to Cite

    Nassif Sabr, Y., Husain Khalaf Jarallah, D., & Hassan Issa Abdul Kareem, D. (2018). Improving the Shear Strength of Lightweight RC Thick Hollow Core Slab Made of Recycled Materials. International Journal of Engineering & Technology, 7(4.20), 403-407. https://doi.org/10.14419/ijet.v7i4.20.26143