Yazar "Canakci, Hanifi" seçeneğine göre listele

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    Characterization of shear strength and interface friction of organic soil
    (Trans Tech Publications Ltd, 2020) Hamed, Majid; Sidik, Waleed S.; Canakci, Hanifi; Celik, Fatih; Georgees, Romel N.
    This study was carried out to undrestand some specific problems that limit safe design and construction of structures on problematic soils. An experimental study was undertaken to examine the influence of the rate of loading and moisture content on shear strength of organic soil. Influece of moisture content on interface friction between organic soil and structural material was also attempted. A commonly used soil in Iraq was prepared at varying moisture contents of 39, 57 and 75 %. The experimental results showed that the increase in water content will decrease the shear stress and the internal friction angle. An increase of the shear rate was found to decrease the shear stress and internal friction angle at all percetanges of water contents. Further, direct shear tests were carried out to detect the interface shear stress behavior between the organic soil and structural material. The results revealed that the increase in water content was shown to have significant negetavie effects on the interface internal friction and angle shear strength. © 2020 Trans Tech Publications Ltd, Switzerland.
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    Examination of the mechanical properties and failure pattern of soilcrete mixtures modified with rice husk ash
    (Taylor & Francis Ltd, 2020) Celik, Fatih; Canakci, Hanifi
    This paper evaluates the unconfined compressive strength (UCS), stability (bleeding), modulus of elasticity and failure patterns of cement-based grout mixtures that were prepared by placing of rice husk ash (RHA) with cement at various water to binder (w/b) ratios. In order to investigate these parameters, UCS and bleeding tests were conducted on the soilcrete samples that prepared at 5, 10, 20 and 30% replacement level of RHA with cement for .75, 1.00 and 1.25 w/b ratios. Test results showed that the UCS values of the samples for 28 day curing are higher than 1 MPa andE/q(u)ratios obtained from soilcrete mixtures were less than the corresponding value from slurry clay-cement mixes given in the literature. In addition, all bleeding test results are lower than the level of .5%. Finally, most of the mixtures prepared for this study failed along foliations.