List of Articles Ehsan Kazeminezhad

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  1 - Experimental investigation of Carbon, Glass and Steel fibers effect on failure strength and slump of standard concrete samples
  Sohrab hosseini kheirabad Ehsan Kazeminezhad Soroush Safakhah
  10.1007/ijase.2023.698539
  Fiber reinforced concretes due to their acceptable performance on structural members have been evaluated in many research. Planty of materials have been used in combination with the concrete and caused researcher focused on the concrete compressive strength. In this exp More

  Fiber reinforced concretes due to their acceptable performance on structural members have been evaluated in many research. Planty of materials have been used in combination with the concrete and caused researcher focused on the concrete compressive strength. In this experimental regard, effects of three types of fibers such as Glass, Carbon and double hook steel on tensile strength, compressive strength and slump of standard concrete samples have been investigated. Four various weight ratios for any of these fibers are used (0.5, 1.0, 1.5 and 2% of cement weight). Analysis is done on the 7 and 28 days of concrete age and a simple concrete sample is existing to compare with fiber concrete samples. Results showed that in all dosage of Glass and Steel, compressive strength is increased but in samples with carbon fibers in 1.5 and 2% is decreased. Tensile strength in all used dosage of fibers is increased. Slump values of all fiber samples are decreased and maximum decrease experienced in glass fiber samples. Manuscript profile
• Open Access Article
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  2 - Evaluation of shape factor effect on hysteresis behavior of elastomeric rubber bearings
  Ehsan Kazeminezhad Soroush Safakhah
  10.1007/ijase.2023.698295
  Base isolation is an appropriate approach to mitigate the seismic hazards. A common type of elastomeric rubber bearing is included rubber pads, intermediate steel plates and steel end plates (anchor plates). The hysteresis behavior of elastomeric rubber bearings is affe More

  Base isolation is an appropriate approach to mitigate the seismic hazards. A common type of elastomeric rubber bearing is included rubber pads, intermediate steel plates and steel end plates (anchor plates). The hysteresis behavior of elastomeric rubber bearings is affected by vertical pressure and shape factor. In this study cyclic loading is applied and hysteresis behavior in the first and second cycles is evaluated. Finite element method with ABAQUS software is used and validation analysis was done. The results show that second cycle of force-displacement in the elastomeric rubber bearings is more stable than the first cycle and vertical pressure and shape factor influenced damping and hysteresis behavior. Also, elastomeric rubber bearings with lower shape factor have higher damping in comparison with larger shape factor and increase in vertical load led to increase in the damping. The innovation of this paper is adopted various hysteresis parameters in finite element analysis to achieve closest results in comparison with experimental work. Manuscript profile