Impact Resistance Of Deflection-Hardening Fiber Reinforced Concretes With Different Mixture Parameters
| Autor: | Recep Tuğrul Erdem, Qais Sahib Banyhussan, Özgür Anil, Gürkan Yıldırım, Ashraf F. Ashour, Mustafa Şahmaran |
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| Přispěvatelé: | İnşaat Mühendisliği, Department of Highway and Transportation Engineering, Al-Mustansiriya University, Baghdad, Iraq, Department of Civil Engineering, Kırıkkale University, Kırıkkale, Turkey, Department of Civil Engineering, Gazi University, Ankara, Turkey, Department of Civil Engineering, Manisa Celal Bayar University, Manisa, Turkey, Department of Civil Engineering, University of Bradford, Bradford, United Kingdom, Department of Civil Engineering, Hacettepe University, Ankara, Turkey, Kırıkkale Üniversitesi |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Building and Construction Impact resistance high performance fiber reinforced concrete (HPFRC) fly ash Mechanics of Materials Deflection (engineering) Hardening (metallurgy) impact deflection-hardening General Materials Science Composite material ABAQUS coarse aggregate Civil and Structural Engineering |
| Popis: | Erdem, R. Tugrul/0000-0002-8895-7602; Banyhussan, Qais/0000-0002-5927-0633; Ashour, Ashraf/0000-0002-4800-6060 WOS: 000471972600013 The impact behavior of deflection-hardening High Performance Fiber Reinforced Cementitious Concretes (HPFRCs) was evaluated herein. During the preparation of HPFRCs, fiber type and amount, fly ash to Portland cement ratio and aggregate to binder ratio were taken into consideration. HPFRC beams were tested for impact resistance using free-fall drop-weight test. Acceleration, displacement, and impact load versus time graphs were constructed and their relationship to the proposed mixture parameters were evaluated. The paper also aims to present and verify a nonlinear finite element analysis, employing the incremental nonlinear dynamic analysis, concrete damage plasticity model, and contact surface between the dropped hammer and test specimen available in ABAQUS. The proposed modeling provides extensive and accurate data on structural behavior, including acceleration, displacement profiles, and residual displacement results. Experimental results which are further confirmed by numerical studies show that impact resistance of HPFRC mixtures can be significantly improved by a proper mixture proportioning. In the presence of high amounts of coarse aggregates, fly ash, and increased volume of hybrid fibers, impact resistance of fiberless reference specimens can be modified in a way to exhibit relatively smaller displacement results after impact loading without risking the basic mechanical properties and deflection-hardening response with multiple cracking. |
| Databáze: | OpenAIRE |
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