Sürdürülebilir Kalkınma Amaçları

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Yazarlar

• Demir, Serhat(1)
• Ghaffari, Amir(1)
• Hüsem, Metin(1)
• Kotan, Turkay(1)
• Pul, Selim(1)
• Tekin, Ilker(1)
• Yurdakul, Muhammet(1)
• Öner, Erdal(1)
• Öztekin, Ertekin(1)

• MakaleYalnız künye2017/r/bayburt/14279
  Mechanical Properties of Conventional Concrete Produced With Different Type of Aggregates in Bayburt Region

  Tekin, Ilker; Kotan, Turkay; Yurdakul, Muhammet; Öner, Erdal

  In this study, the limestone, natural aggregate, serpentine and Bayburt stone located in the province of Bayburt used as aggregate in conventional concrete production. In the experiments, the cement dosage and workability were kept constant. Slump, Ve-Be, unit weight and the highest temperature values in first 2 hours of the fresh concrete were measured. The concrete samples prepared with Bayburt stone were cured for 90 days and the others were cured for 28 days in lime-saturated water. Strain-stress data and water absorption values were measured on the hardened concretes at 7 and 28th days age through the records of stress and strain data during compressive strength tests. According to results of this study, the compressive strengths of the concrete samples with limestone, natural aggregate and serpentine were on average of 40, 35 and 5 MPa, respectively, on the 28th day. Also, in concrete samples with Bayburt stone, the compressive strengths were reached to 16 MPa for 28 days and to 22 MPa for 90 days.

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• MakaleYalnız künye2017Scopus SJRQ1/r/bayburt/13827
  Experimental determination of cohesion & internal friction angle on conventional concretes

  Pul, Selim; Ghaffari, Amir; Öztekin, Ertekin; Hüsem, Metin; Demir, Serhat

  Various failure criterions have been used for the nonlinear analysis of concrete and reinforced concrete structures. To get more accurate results from the analyses, the selected failure criterion must be appropriate with the characteristics of problem and the assumptions made in the criterion should comply with the characteristics of problem. In this study, an experimental investigation was carried out to determine the cohesion (c) and internal friction angle (?) values, which are in the compressive strength range of 14.4 MPa ≤ fcm cube ≤ 47.0 MPa (2.03 ksi ≤ fcm cube ≤ 6.82 ksi) that are used in failure criterions such as Mohr-Coulomb and Drucker-Prager preferred in end unit analyses for concrete and reinforced concrete structures. Tests are performed by using the direct shear test system, which is designed and produced for this study. Finally, cohesion and internal friction angle were determined between 2.94 and 12.34 MPa (0.43 and 1.79 ksi) and 29.8 and 41.7 degrees, respectively.

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