Yazar "Kalkan, Ilker" için listeleme
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Analysis of Thermal Environmental Effects on Precast, Prestressed Concrete Bridge Girders: Temperature Differentials and Thermal Deformations
Lee, Jong-Han; Kalkan, Ilker (Multi-Science Publ Co Ltd, 2012)AASHTO specifications provide vertical thermal gradients for the thermal design of precast, prestressed concrete bridge girders. However, the thermal behavior of the girders pertains to not only vertical thermal movement ... -
Behavior of Postfabricated RC Beams under Monotonic Transverse Loading
Aykac, Sabahattin; Jamal, Rohullah; Ozbek, Eray; Kalkan, Ilker; Aykac, Bengi (Asce-Amer Soc Civil Engineers, 2019)Postfabricated beams, that is, newly constructed beams in an existing structural system, provide an effective remedial solution to the serviceability and strength problems in an existing floor system and the discontinuities ... -
Behaviour of brick infill walls strengthened with expanded steel plates
Cumhur, Alper; Altundal, Adil; Kalkan, Ilker; Aykac, Sabahattin (Springer, 2016)The present study was dedicated to investigate an effective, economical and convenient method for strengthening brick infill walls, i.e. the use of externally-bonded expanded steel plates. A total of 30 plastered wall ... -
Development length and bond strength equations for FRP bars embedded in concrete
Basaran, Bogachan; Kalkan, Ilker (ELSEVIER SCI LTD, 2020)The present study pertains to the linear multiple regression analyses on a database of 185 hinged-beam experiments on FRP bars. The database was compiled from 51 tests conducted within the scope of the present study and ... -
Discussion on "Seismic capacity of masonry infilled RC frame strengthening with expanded metal ferrocement" by A. Leeanansaksiri, P. Panyakapo, A. Ruangrassamee [Eng. Struct. 159 (2018) 110-127]
Aykac, Sabahattin; Ozbek, Eray; Kalkan, Ilker; Aykac, Bengi (Elsevier Sci Ltd, 2018)A discussion on the paper by Leeanansaksiri et al. (2018) is presented. In the paper, strengthening of the masonry infill walls using ferrocement reinforced with standard expanded steel plates (EMS) was investigated ... -
Effect of shrinkage restraint on deflections of reinforced self-compacting concrete beams
Kalkan, Ilker; Lee, Jong-Han (Korean Society Of Civil Engineers-Ksce, 2013)This paper presents the results of a study aimed at investigating the effects of restrained shrinkage on the in-plane deflection behavior of reinforced beams cast with self-compacting concrete. The load-deflection data ... -
Effects of the use of the surface spectrum of a specific region on seismic performances of R/C structures
Sonmezer, Y. Bulent; Kalkan, Ilker; Bas, Selcuk; Akbas, S. Oguzhan (Springer, 2018)The present study pertains to the estimation of the significance of the use of the local acceleration spectrum of a region rather than the design spectra based on the linear time-history analyses of real structures in the ... -
The effects of vertical earthquake motion on an R/C structure
Bas, Selcuk; Kalkan, Ilker (Techno-Press, 2016)The present study investigated the earthquake behavior of R/C structures considering the vertical earthquake motion with the help of a comparative study. For this aim, the linear time-history analyses of a high-rise R/C ... -
Experimental and Analytical Investigation of Lateral-Torsional Buckling of RC Beams with Geometric Imperfections
Lee, Jong-Han; Kalkan, Ilker (Trans Tech Publications Ltd, 2014)The design of reinforced concrete beams has usually focused on the ultimate flexural capacity and disregarded the lateral stability of the beams. However, the development of high-strength concrete and the implementation ... -
Flexural Behavior and Strength of Reinforced Concrete Beams with Multiple Transverse Openings
Aykac, Bengi; Aykac, Sabahattin; Kalkan, Ilker; Dundar, Berk; Can, Husnu (Amer Concrete Inst, 2014)Reported are the results of experiments on 10 rectangular reinforced concrete (RC) beams with and without multiple web openings. The effects of opening geometry, the-use of longitudinal stirrups in the posts between the ... -
Flexural behavior of RC beams with regular square or circular web openings
Aykac, Bengi; Kalkan, Ilker; Aykac, Sabahattin; Egriboz, Yusuf Emre (Elsevier Sci Ltd, 2013)This paper presents a study aimed at investigating the influence of multiple web openings along the length of an RC beam on its flexural behavior. A total of nine rectangular beams were tested. Diagonal reinforcement around ... -
Flexural strengthening and repair of RC slabs by adding a new RC layer
Aykac, Sabahattin; Kalkan, Ilker; Tankut, Tugrul (Ernst & Sohn, 2016)The present paper summarizes the findings of an experimental programme to investigate a strengthening/repair technique through the introduction of a new RC layer to an existing slab. Six RC slabs, composed of twelve ... -
In-Plane Flexural Behavior Of Reinforced Concrete Beams With Regular Openings
Kalkan, Ilker (Gazi Univ, Fac Engineering Architecture, 2014)The presence of multiple regular openings in beams provides an effective design by allowing passage of the pipes and ducts needed for different services in a building and by distributing the stress concentrations around ... -
Influence of special plaster on the out-of-plane behavior of masonry walls
Donduren, Mahmut Sami; Kanit, Recep; Kalkan, Ilker; Gencel, Osman (Techno-Press, 2016)The present study aimed at investigating the effect of a special plaster on the out-of-plane behavior of masonry walls. A reference specimen, plastered with conventional plaster, and a specimen plastered with a special ... -
Investigation on variables affecting bond strength between FRP reinforcing bar and concrete by modified hinged beam tests
Basaran, Bogachan; Kalkan, Ilker (ELSEVIER SCI LTD, 2020)Abstract The bond strength between FRP reinforcement and concrete significantly affects the load bearing capacity and deformation ability of an FRP reinforced concrete member subjected to bending. There are numerous ... -
Lateral stability of reinforced-concrete beams with initial imperfections
Kalkan, Ilker; Bocek, Meryem; Aykac, Sabahattin (Ice Publishing, 2016)The paper presents the results of an analytical study aimed at investigating the lateral stability of reinforced-concrete (RC) beams with initial geometric imperfections. Based on the experimental results in the literature, ... -
Mechanical properties and microstructure of cement multicomponent systems containing pozzolan materials under sulfate attack
Guzelkucuk, Selahattin; Demir, Ilhami; Sevim, Ozer; Kalkan, Ilker (STOWARZYSZENIE PRODUCENTOW CEMENTU, 2020)Sulfates are a significant chemical components that may lead to failures of cement concrete composites. The present study is dedicated to analyzing the effects of sulfate on the microstructure of cement composite mortars. ... -
Microstructural properties of lithium-added cement mortars subjected to alkali-silica reactions
Demir, Ilhami; Sevim, Ozer; Kalkan, Ilker (Indian Acad Sciences, 2018)Little comparative research has been done on the efficiency of lithium additives to reduce the alkali-silica reaction (ASR) expansion. To reduce the ASR effects of reactive aggregate, different mortar bars were obtained ... -
New Experimental Setup for Seismic Testing of Exterior RC Beam-Column Joints
Aykac, Sabahattin; Kalkan, Ilker (Amer Soc Testing Materials, 2015)Exterior beam-column joints are commonly tested to investigate the influence of different strengthening and repair techniques on the seismic performances of RC structures. All of the internal forces developing at the ends ... -
A numerical and analytical study on distortional buckling of doubly-symmetric steel I-beams
Kalkan, Ilker; Buyukkaragoz, Alper (Elsevier Sci Ltd, 2012)This study investigates the effect of web distortions in a lateral distortional buckling mode on the buckling moments of doubly-symmetric steel I-beams. Analytical buckling moment expressions applicable to both elastic and ...
