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Doç. Dr. Hakan Yalçıner

Doç. Dr. Hakan Yalçıner
Erzincan Binali Yildirim University · Civil Engineering

PhD- Assoc. Prof. Dr. in Civil Engineering
Developing a software program for structural assessment of corroded RC members called as CORRSTRUCTURE

About

41
Publications
31,219
Reads
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430
Citations
Introduction
Dr. Hakan Yalçıner is a chair of Structural Research Center at Corrosion Division. He received PhD from Eastern Mediterranean University. He is a voting member of ACI Committees 546-00 (Repair) and 546-0E (Corrosion Studies). His research interests include effects of corrosion on structural performance, seismic performance assesment methods, time dependent corrosion models and blast. Dr. Yalçıner is the chair of 13th March of Structural Mechanics Lab.
Additional affiliations
October 2017 - October 2017
Erzincan University
Position
  • Professor (Associate)
August 2014 - February 2015
International Cyprus University
Position
  • Lecturer
February 2014 - February 2015
Cyprus International University
Position
  • Flying Teacher
Education
June 2009 - June 2011
McMaster University
Field of study
  • Structural Engineering
June 2007 - February 2012
Eastern Mediterranean University
Field of study
  • Structural Engineering
June 2005 - June 2007
European University of Lefke
Field of study
  • Civil Enginering-Construction Management

Publications

Publications (41)
Article
Full-text available
The effect of corrosion on the bond strength between reinforcement bars and concrete was studied in a series of experiments. An accelerated corrosion method was used to corrode the reinforcement bars embedded in concrete specimens. Pullout tests were performed to develop an empirical model for the ultimate bond strength by evaluating bond strengths...
Article
Full-text available
Problem statement: Inadequate attention during design and construction of some of Reinforced Concrete (RC) buildings in North Cyprus has raised questions about the performance level of these existing buildings under future earthquakes. Approach: Column jacketing, adding steel braces and new shear walls to an existing building are common strengtheni...
Article
Full-text available
To perform accurate seismic analyses of corroded reinforced concrete (RC) buildings, it is necessary to predict the bond-slip relationships to modify the moment-curvature relationships. In this study, empirical models were developed to predict the bond strength of corroded RC columns. Twenty-five RC columns were tested under combined cyclic lateral...
Article
Full-text available
Ductile behavior is one of the most important earthquake indicators that must be possessed by structures. Because of the limited tensile strength of concrete, alternative materials such as structural nanosynthetic fibers as three-dimensional reinforcement bars have gained increasing popularity over several decades. However, the contribution of fibe...
Article
Full-text available
In the literature, only one empirical model is available as a nondestructive method for the prediction of seismic performance levels of corroded reinforced concrete (RC) columns as a function of the initial corrosion crack width at lower corrosion levels. Because of the ruptured transverse reinforcement bars at higher corrosion levels, the structur...
Conference Paper
Full-text available
An experimental study was performed on five reinforced concrete (RC) columns to investigate the structural behavior of highly corroded RC columns. Four of the RC columns were corroded using an accelerated corrosion method for different corrosion levels at longitudinal bars as 15.4, 20.2, 27.3 and 28.3%. RC columns were tested under cyclic load for...
Conference Paper
Betonarme elemanlarda oluşan donatı korozyonu sebebiyle, yapıların hedeflenen performans seviyeleri olumsuz yönde etkilenmektedir. Donatı kesit alanında azalma, korozyon ürünlerinin hacimsel genişlemesi ile betonun çatlaması, beton ve donatı arasındaki aderans kuvvetinin azalması korozyonun betonarme elemanlarda neden olduğu başlıca olumsuz etkiler...
Article
Full-text available
Thirty full-scale reinforced concrete (RC) columns were tested to investigate their seismic behavior. Of these, 25 RC columns were tested under cyclic loading for two different applied axial load ratios, namely, 0.20 and 0.40, at three concrete strength levels, namely, 9, 27, and 37 MPa (1305, 3915, and 5365 psi, respectively), and at four corrosio...
Article
Full-text available
An experimental study was conducted to predict the flexural strength of corroded full-scale reinforced concrete (RC) beams. Two different concrete strength levels at two different steel ratios were tested for different corrosion levels ranging from 0 to 17%. An accelerated corrosion aging method was applied to corrode the reinforcing bars embedded...
Article
Full-text available
An experimental study was conducted for the prediction of the seismic performance levels of corroded reinforced concrete (RC) columns as a function of the initial corrosion crack widths. A full-scale accelerated-corrosion pool was used to corrode 25 full-scale RC columns. The initial crack widths at different levels of corrosion were measured for t...
Article
Full-text available
The estimation of the seismic performance of reinforced concrete structures exposed to corrosion is more difficult than uncorroded structures. By this experimental study, it was aimed to keep light on the studies to be done on the reinforced concrete members exposed to corrosion. Five full-scale reinforced concrete columns were corroded for differe...
Article
Full-text available
An experimental study was conducted to investigate the pure torsional moment capacities of corroded reinforced concrete beams. An accelerated corrosion pool was used to corrode the reinforcement bars embedded in reinforced concrete beams. Seven reinforced concrete beams at corrosion levels between 0% and 17% were examined under pure torsion tests....
Article
The estimation of the seismic performance of reinforced concrete structures exposed to corrosion is more difficult than conventional structures. By this experimental study, it was aimed to keep light on the studies to be done on the reinforced concrete members exposed to corrosion. Five full-scale reinforced concrete columns were corroded for diffe...
Article
Full-text available
Turkey is a country that is vulnerable to earthquakes and has experienced many major earthquakes that completely destroyed or caused significant damage to numerous historic structures. Today, using computer software, it is important to numerically model and analyze historic structures that need significant restoration and strengthening, to evaluate...
Book
Full-text available
The book presents a collection of articles on novel approaches to problems of current interest in structural engineering by academicians, researchers, and practicing structural engineers from all over the world. The book is divided into five chapters and encompasses multidisciplinary areas within structural engineering, such as structural dynamics...
Article
New methods and experimental results are needed to more accurately evaluate the seismic performance of reinforced concrete structures exposed to corrosion. Corrosion causes to decrease in the cross-sectional area of the corroded reinforcement bars in the concrete, which also causes significant problems such as loss of bond. Loss of adherence can le...
Article
Full-text available
The aim of the present study was to investigate the effects of different confinement techniques (i.e., conventional shear reinforcement bars and confinement provided by a geo-grid) on flexural strength of full scaled reinforced concrete beams with and without the use of polypropylene fibers. Few studies have been performed using the geo-grids as sh...
Article
Full-text available
An experimental study was performed to examine the effects of polyester geo-grid as a shear reinforcement bar for corroded and uncorroded reinforced concrete beams. The main aim of this study was to investigate the effect of geo-grids on flexural strength, moment-curvature, bond–slip and crack patterns for uncorroded and corroded reinforced concret...
Conference Paper
Full-text available
Although most of the earthquake codes and engineers do not consider the effect of infilled walls on seismic performance levels of reinforced concrete buildings, infilled walls have remarkable effects during earthquakes. They mainly effect the initial stiffness and thus roof drift ratios of buildings. The aim of the present study was to examine the...
Article
Full-text available
This study develops empirical models for the prediction of the bond strength of uncorroded and corroded reinforcement bars. The effects of hooked reinforcement on the bar's development length when covered fully and partially are examined. An accelerated corrosion method is used to corrode the reinforcement bars embedded in concrete specimens. Pull-...
Article
Full-text available
Deterioration due to corrosion becomes a more serious problem when future earthquakes with unpredicted intensity and time are considered. Therefore, the prediction of performance levels of corroded reinforced concrete structures is important to prevent serious premature damage. In this study, a corroded, 50-year-old high school building was analyze...
Article
Full-text available
Structural blast design has become a necessary part of the design with increasing terrorist attacks. Terrorist attacks are not the one to make the structures important against blast loading where other explosions such as high gas explosions also take an important place in structural safety. The main objective of this study was to verify the structu...
Article
Full-text available
The main objective of this study was to assess and identify general construction faults and to investigate the effects of construction faults on the linear performance levels of reinforced concrete buildings. For doing this, observed two common construction faults (i.e., corrosion and honeycombing) were considered to be used in linear performance a...
Chapter
Full-text available
There are several methods exist to define the seismic performance levels of reinforced concrete (RC) structures. Among these methods, the nonlinear dynamic and the static analyses in which both methods involve sophisticated computational procedures because of the non-linear behaviour of the RC composite materials. In order to simplify these analyse...
Article
Full-text available
Corrosion is a long-term process resulting in the deterioration of the reinforced concrete (RC) structures. Most of the structural problems observed under the impact of either earthquakes or service loads might occur due to corrosion. Therefore, prediction of the remaining service life of a corroding RC structure plays an important role to prevent...
Article
Full-text available
Inadequate attention during design and construction of some of reinforced concrete (RC) buildings in Cyprus has raised questions about the performance level of these existing buildings under future earthquakes. This study aimed to assess the seismic structural response of a four story existing RC building. For this purpose, first, the weak structur...
Article
Full-text available
Changes at different phases of a construction project are inevitable due to a multitude of reasons such as design changes, design errors, additions to scope, or unknown conditions that may arise due to resource limitations and the uniqueness of the project. For each change, contractors are entitled to an equitable adjustment to the base contract pr...

Questions

Question (1)
Question
GEO-GRID WITH POOR ELASTIC MODULUS AND BOND STRENGTH;
Those who defend the design principles of reinforced concrete members produced with the use of geogrids are academics who are far from the basic principles of reinforced concrete. Would they live in the buildings to be built with Geogrid? Even the structural performance of corroded convetional reinforced concrete members are better than those used geo-grids.

Network

Cited By

Projects

Projects (12)
Archived project
Bu çalışma deprem kuşağında yer alan ülkemizde korozyona maruz kalmış betonarme yapıların sismik performanslarının daha doğru bir şekilde değerlendirilmesine olanak sağlaması amacı ile gerçekleştirilmiştir. Korozyona maruz kalmış betonarme yapılarının sismik performans seviyelerinin belirlenmesinde korozyonun etkisi genel olarak yalnızca donatı çapındaki azalma olarak göz önüne alınması yapının gerçek sismik performansının belirlenmesine sınırlamalar getirmektedir. Gerçekleştirilen bu çalışma ile; farklı beton sınıfları, eksenel yük ve pas oranları için deneye tabi tutulan tam ölçekli betonarme kolon sonuçlarından elde edilen verilerin korozyona maruz kalmış betonarme yapılarının değerlendirilmesinde daha doğru bir yaklaşımın sağlanacağı düşünülmektedir. Çalışma kapsamının genişletilerek yalnızca mikroskop aracılığı ile ve hiçbir tahribatlı deney gerçekleştirilmeden korozyona maruz kalmış betonarme kolonlarının sismik performans seviyelerinin birincil korozyon çatlak genişliğine bağı olarak ilk kez tahmin edilmesine olanak sağlayan araştırma ekibime teşekkür ederim. Aynı şekilde çalışma kapsamında özellikle yükleme deneyleri sonrası betonarme kolonlarının kırılarak ve içerisinden tüm betonarme donatılarının çıkartılarak gerçek korozyon oranlarının elde edilmesi ile oldukça zor bir çalışmanın gerçekleştirilmesine katkı sağlayan TÜBİTAK kurumumuza ve değerli çalışanlarına teşekkürü bir borç bilirim. Ayrıca özellikle; bu projenin gerçekleştirilmesi için sıfırdan bir laboratuvarın kurulmasına ve ardından geliştirilmesine katkı sağlanmasından dolayı yeni bir dönem yapı mekaniği laboratuvarımızda başlamıştır. Katkılarından ve desteklerinden dolayı projenin kabulüne onay sağlayan panelistlerimize teşekkür ederiz.
Project
Korozyona Maruz Kalmış Betonarme Çerçevelerin Sismik Performans Seviyelerinin Tahmin Edilebilmesi İçin Ampirik Modellerin Geliştirilmesi.
Project
Mevcut Betonarme Yapıların Sismik Performans Değerlendirmesinde Hızlı ve Ayrıntılı Değerlendirme Yöntemlerin Etkinliğinin Araştırılması