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Computers and Concrete
  Volume 16, Number 1, July 2015, pages 179-190

A treatise on irregular shaped concrete test specimens
Selçuk Emre Görkem

    An experimental program has been carried out to investigate the effect of edge-slope on compressive strength of concrete specimens. In this study, effect of such slope was investigated by testing 100 standard cylinder specimens and 40 standard cubes. When molds are put on a slanted place, wet concrete starts to flow through the open end of mold. It keeps flowing until it reaches to a parallel surface with the place over which it was placed. That creates a sloped surface over the loading area. Experimental results revealed significant relationships between failure loads and slope of loading surface for cylinders. Angled cracks occurred in sloped cylinder specimens. Tension cracks occurred in cube specimens. Fracture mechanisms were also evaluated by using finite element analyses approach. Experiments yielded an exponential curve with bandwidth for cylinders. Average value of curve is between slope and compressive strength. Inclination is much effective parameter for cylinders than cubes.
Key Words
    concrete; high strength concrete; compressive strength; slope; cylinder specimen
Selçuk Emre Görkem : Erciyes University, Biosystems Engineering Department, 38038 Kayseri, Turkey

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