Araştırma Çıktıları | Scopus İndeksli Yayınlar Koleksiyonu by İSTE Author "Sevim, Umur Korkut"
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Alkali activation of electric arc furnace slag: Mechanical properties and micro analyzes
Öztürk, Murat; Bankir, Müzeyyen Balçıkanlı; Bölükbaşı, Ömer Saltuk; Sevim, Umur Korkut (Elsevier, 2019)Research on sustainable concrete has drawn scientist's attentions on industrial by-products and wastes. Thus, consumption of raw materials would be diminished. In this study alkali activation of electric arc furnace slag ... -
Carbonation Depth and Permeability of Quaternary Hybrid Fiber Concretes
Bankir, Müzeyyen Balçıkanlı; Sevim, Umur Korkut (American Society of Civil Engineers (ASCE), 2022)Concrete structures are exposed to water throughout their service life. Nowadays, fiber-reinforced concrete is the most preferred concrete due to its superior mechanical properties. However, good mechanical properties alone ... -
Compressive strength prediction models for cementitious composites with fly ash using machine learning techniques
Sevim, Umur Korkut; Bilgiç, Hasan Hüseyin; Cansız, Ömer Faruk; Öztürk, Murat; Atiş, Cengiz Duran (Elsevier, 2021)In this study, it was proposed a novel prediction model to predict compressive strength of mortar samples having different properties. For this purpose, 8 different fly ashes were used in mortar mixture as a replacement ... -
Design of a linear to circular polarization converter integrated into a concrete construction for radome applications
Öztürk, Murat; Sevim, Umur Korkut; Altıntaş, Olcay; Ünal, Emin; Akgöl, Oğuzhan; Karaaslan, Muharrem; Sabah, Cumali (Cambridge University Press, 2021)In this paper, we present a linear to circular polarization converter integrated in a concrete structure to eliminate signal transmission problem originated from the concrete buildings in microwave regime. Two polarization ... -
Determination of physical properties of concrete by using microwave nondestructive techniques
Öztürk, Murat; Sevim, Umur Korkut; Akgöl, Oğuzhan; Ünal, Emin; Karaaslan, Muharrem (Applied Computational Electromagnetics Society (ACES), 2018)Determination of the electrical properties of concretes with different water/cement ratios and investigation of the relationship between their electrical and mechanical properties is a promising technique towards improving ... -
Effect of n-CaCO3 on fresh, hardened properties and acid resistance of granulated blast furnace slag added mortar
Bankir, Müzeyyen Balçıkanlı; Öztürk, Murat; Sevim, Umur Korkut; Depci, Tolga (Elsevier, 2020)Nano size CaCO3 (n-CaCO3) particles were used as an additive into the Ground Granulated Blast Furnace Slag (GGBS) added mortar to investigate their effects on fresh, hardened properties and acid resistance. Setting time, ... -
An electromagnetic non-destructive approach to determine dispersion and orientation of fiber reinforced concretes
Öztürk, Murat; Sevim, Umur Korkut; Akgöl, Oğuzhan; Karaaslan, Muharrem; Ünal, Emin (Elsevier, 2019)Including fibers in concretes improves their mechanical properties such as flexural strength, impact load resistance and limited crack propagation. The dispersion, orientation and types of the fibers placed in the concretes ... -
Experimental verification of phononic crystal based on square arrays of cylindrical holes against seismic vibrations in full-scale systems: modeling, sensing and signal processing of seismic vibrations
Kaçın, Selçuk; Öztürk, Murat; Sevim, Umur Korkut; Karaaslan, Muharrem; Özer, Zafer; Akgöl, Oğuzhan; Mert, Bayram Ali; Ünal, Emin (Springer, 2021)In this study, phononic crystals reducing the earthquake effects will be determined and prototypes will be constructed which can give the opportunity to reduce the effects of seismic waves. Furthermore, test results will ... -
Experimental work on mechanical, electromagnetic and microwave shielding effectiveness properties of mortar containing electric arc furnace slag
Öztürk, Murat; Akgöl, Oğuzhan; Sevim, Umur Korkut; Karaaslan, Muharrem; Demirci, Mustafa; Ünal, Emin (Elsevier, 2018)It is well known that one of the widely used structural materials is ordinary cement mortar. Whereas the mechanical properties are sufficient as structural materials, its shielding effectiveness and prevention properties ... -
High-temperature effect on mechanical properties of fiber reinforced concretes including waste tire rubber
Öztürk, Murat; Bankir, Müzeyyen Balçıkanlı; Sevim, Umur Korkut (Wiley, 2022)In this paper, concretes including three different fiber types (carbon steel fiber [CSF], forta ferro fiber [FFF], and polypropylene fiber [PPF]) with different percentages by volume (0.5%, 1%, and 1.5%) and crumb rubber ... -
Investigation of the Effect of Alkali Curing on the Strength Properties of GBFS-Added Composites
Öztürk, Murat; Bankir, Müzeyyen Balçıkanlı; Sevim, Umur Korkut (American Society of Civil Engineers (ASCE), 2022)Large amounts of waste products have been and most probably will continue to be produced with urbanization, industrialization, and technological developments. The study presented herein is devoted to using blast furnace ... -
Investigation of the mechanic, electromagnetic characteristics and shielding effectiveness of concrete with boron ores and boron containing wastes
Öztürk, Murat; Sevim, Umur Korkut; Akgöl, Oğuzhan; Ünal, Emin; Karaaslan, Muharrem (Elsevier, 2020)In this study, mechanical properties electromagnetic (EM), and shielding effectiveness of concrete samples containing boron product and wastes was investigated in details. In order to increase shielding effectiveness of ... -
Mechanical and electromagnetic performance of cement based composites containing different replacement levels of ground granulated blast furnace slag, fly ash, silica fume and rice husk ash
Öztürk, Murat; Karaaslan, Muharrem; Akgöl, Oğuzhan; Sevim, Umur Korkut (Elsevier, 2020)In this study, cement additives were replaced with cement in mortar mixtures by mass. Mortar specimens were prepared with different additives and dosages which were mechanically and electromagnetically tested. According ... -
Metamaterial sensor application concrete material reinforced with carbon steel fiber
Dalgaç, Şekip; Karadağ, Faruk; Ünal, Emin; Özkaner, Vedat; Bakır, Mehmet; Akgöl, Oğuzhan; Sevim, Umur Korkut; Delihacıoğlu, Kemal; Öztürk, Murat; Karaaslan, Muharrem; Sabah, Cumali (World Scientific Publ Co Pte Ltd, 2020)In this paper, a rectangular split ring resonator-type metamaterial (MTM) sensor application is demonstrated in order to examine concrete materials. First, different types of concrete materials including carbon steel fiber ... -
MLR & ANN approaches for prediction of compressive strength of alkali activated EAFS
Öztürk, Murat; Cansız, Ömer Faruk; Sevim, Umur Korkut; Bankir, Müzeyyen Balçıkanlı (Techno Press, 2018)In this study alkali activation of Electric Arc Furnace Slag (EAFS) is studied with a comprehensive test program. Three different silicate moduli (1-1,5-2), three different sodium concentrations (4%-6%-8%) for each silicate ... -
A Nondestructive Method for Determining Fiber Content and Fiber Ratio in Concretes Using a Metamaterial Sensor Based on a V-Shaped Resonator
Akgöl, Oğuzhan; Ünal, Emin; Bağmancı, Mehmet; Karaaslan, Muharrem; Sevim, Umur Korkut; Öztürk, Murat; Bhadauria, Avanish (Springer, 2019)A micro sensor based on a V-shaped resonator (VSR) is implemented for the purpose of determining fiber content and ratio in construction materials as a nondestructive method. Concrete is investigated as the construction ... -
Performance optimization of hybrid fiber concrete according to mechanical properties
Bankir, Müzeyyen Balçıkanlı; Sevim, Umur Korkut (Elsevier, 2020)In this research, interactional effects of four different fiber types, (steel, glass, synthetic and polypropylene) fly ash replacement ratio with cement, electrical arc furnace slag replacement ratio with natural aggregate ... -
Production of new electromagnetic wave shielder mortar using waste mill scales
Öztürk, Murat; Depci, Tolga; Bahçeci, Ersin; Karaaslan, Muharrem; Akgöl, Oğuzhan; Sevim, Umur Korkut (Elsevier, 2020)Electromagnetic (EM) wave shielder mortar can be produced by mixing cement, natural limestone, tap water with mill scale (mill scale-I and mill scale-II) which is one of the biggest disposal area problems of the iron-steel ... -
Properties of Slightly Alkali-Activated Electric Arc Furnace Slag Concretes and Statistical Evaluation
Bankir, Müzeyyen Balçıkanlı; Sevim, Umur Korkut; Arsoy, Ahmet (Springer, 2022)Electric arc furnace slag (EAFS) is a material that emerges as a by-product in iron and steel plants and is in need of evaluation. To ensure its recovery by using it in concrete production, it was replaced 10%, 20% and 30% ... -
Seismic metamaterials for low-frequency mechanical wave attenuation
Kaçın, Selçuk; Öztürk, Murat; Sevim, Umur Korkut; Mert, Bayram Ali; Özer, Zafer; Akgöl, Oğuzhan; Ünal, Emin; Karaaslan, Muharrem (Springer, 2021)In this study, a triangular array of cylindrical holes was shown to function as a local resonator to seismic metamaterials against the vibration generator loading in the geophysics concept. The field test showed that the ...
