Browsing by Author "Bundur, Zeynep Başaran"
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Ambient and elevated temperature mechanical behavior of a high strength aluminum alloy after cold deformation
Shojaei, Kambiz (2016-01)Nowadays, aluminum alloys in automotive and aerospace industries have assigned a noticeable portion in structural applications in comparison to many steel alloys. The aim of this study was to investigate the high-temperature ... -
Automated flow rate control of extrusion for 3D concrete printing incorporating rheological parameters
Ahi, Oğulcan; Ertunç, Özgür; Bundur, Zeynep Başaran; Bebek, Özkan (Elsevier, 2024-04)The use of inline quality assessment technologies is of great importance in meeting the consistent extrusion requirements of 3D concrete printing (3DCP) applications. This paper presents a system to regulate extrusion speed ... -
Bacteria-based concrete
Belie, N. de; Wang, J.; Bundur, Zeynep Başaran; Paine, K. (Elsevier, 2018)Several strains of bacteria can induce the precipitation of calcium carbonate, if the appropriate conditions, sufficient nutrients and a calcium source are provided. The metabolic pathway that is followed by the bacterial ... -
Bio-based rheology modifying agents for cement-based materials
Güldoğan, Ayça Gisu (2020-06-10)Recent developments in the construction sector lead to the possible implementation of advanced manufacturing techniques of cement-based materials. Such concrete production led to the development of high-performance ... -
Bio-derived rheology modifying agents for cement-based materials
Azima, M.; Bundur, Zeynep Başaran (Springer, 2020)In recent few years, significant development has been made in concrete technology to accommodate the requirements of high-performance concrete. Rheology Modifying Agents (RMAs) (such as superplasticizers) and Viscosity ... -
Biomineralization in self-healing cement-based materials: investigating the temporal evolution of microbial metabolic state and material porosity
Bundur, Zeynep Başaran; Bae, S.; Kirisits, M. J.; Douglas Ferron, R. (American Society of Civil Engineers, 2017)The potential for self-healing of concrete via biomineralization processes in which microorganisms influence mineral precipitation is promising. To embed microorganisms within a cement-based material, key challenges are ... -
Biomineralized cement-based materials: impact of inoculating vegetative bacterial cells on hydration and strength
Bundur, Zeynep Başaran; Kirisits, M. J.; Ferron, R. D. (Elsevier, 2015-01)Biomineralization in cement-based materials has become a point of interest in recent years due to the possibility that such an approach could be used to develop a self-healing cement-based system. The objective of this ... -
Calcium sulfoaluminate cement and supplementary cementitious materials-containing binders in self-healing systems
Acarturk, B. C.; Sandalcı, Ilgın; Hull, N. M.; Bundur, Zeynep Başaran; Burris, L. E. (Elsevier, 2023-08)Creation of more durable concrete is one pathway to achieving improved sustainability and carbon footprint over a concrete structure's life. Microbially induced calcite precipitation has been shown to densify concrete ... -
A comparative evaluation of sepiolite and nano-montmorillonite on the rheology of cementitious materials for 3D printing
Aydın, Eylül Mina; Kara, Ahmet Burhan; Bundur, Zeynep Başaran; Özyurt, N.; Bebek, Özkan; Gulgun, M. A. (Elsevier, 2022-10-03)Through the last decade, methods of digital manufacturing of concrete gained a significant interest compared to conventional concrete. The main challenge in additive manufacturing (3D printing) is to design a highly ... -
Crack remediation in mortar via biomineralization: effects of chemical admixtures on biogenic calcium carbonate
Amiri, Ali; Azima, Mahzad; Bundur, Zeynep Başaran (Elsevier, 2018-11-30)Limited research on biomineralization in cement-based systems suggested that self-healing of surface cracks could be obtained by triggering biogenic calcium carbonate (CaCO3) precipitation within the cracks. While this is ... -
Çimento-esaslı harçlarda kendiliğinden iyileşmenin sağlanması için 2 bileşenli biyolojik katkı maddesinin geliştirilmesi
Tezer, Mustafa Mert; Bundur, Zeynep Başaran (Gazi Üniversitesi, 2021)Purpose: Throughout the literature, studies showed that among several alternatives such as diatomaceous earth (DE), metakaolin, zeolites and expanded clay could be suitable for protection of the bacteria based on their ... -
Design of energy-efficient white portland cement mortars for digital fabrication
Kurt, S.; Atalay, Yiğit Alper; Aydın, Ozan Eray; Avcıoğlu, B.; Yıldırım, T.; Göktepe, G. B.; Emir, S.; Bundur, Zeynep Başaran; Paksoy, H. Ö. (Springer, 2020)Additive manufacturing, i.e. three-dimensional (3D) printing technology has many advantages over traditional processes and the related technology is continuously improving. This study aims to develop an energy- efficient ... -
Designing redundant cable-driven parallel robots for additive manufacturing using end-effector compliance index
Kara, Burhan; Qureshi, Muhammad Sarmad; Bundur, Zeynep Başaran; Bebek, Özkan (IEEE, 2023)This paper presents a methodology for optimizing cable anchor points for cable-driven parallel robots (CDPRs) for specific additive manufacturing tasks. Much of a CDPR's workspace is generally not used for printing tasks. ... -
Development of two-phase biological self-healing agents for cement-based mortar
Tezer, Mustafa Mert (2020-01-13)Factors affecting durability of concrete structures are generally associated with each other. Due to its brittle nature, concrete can crack under stress and these cracks can decrease the service life of concrete structures. ... -
End-of-life materials used as supplementary cementitious materials in the concrete industry
Nicoara, A. I.; Stoica, A. E.; Vrabec, M.; Rogan, N. S.; Sturm, S.; Ow-Yang, C.; Gulgun, M. A.; Bundur, Zeynep Başaran; Ciuca, I.; Vasile, B. S. (MDPI, 2020-04)A sustainable solution for the global construction industry can be partial substitution of Ordinary Portland Cement (OPC) by use of supplementary cementitious materials (SCMs) sourced from industrial end-of-life (EOL) ... -
Evaluation of bioimplants surface nano-micro design by chemical mechanical polishing against alternative methods
Al Saeedi, Riaid Hadi Salih (2019-01-11)Biomaterials comprise a representative fraction of the products used in the health area. Biomedical devices (such as biosensors, blood circulation tubes, hemodialysis systems) can be cited as examples. Biomaterials can be ... -
Evaluation of self-healing of internal cracks in biomimetic mortar using coda wave interferometry
Liu, S.; Bundur, Zeynep Başaran; Zhu, J.; Ferron, R. D. (Elsevier, 2016-05)Calcium carbonate biomineralization is a bio-chemical process in which calcium carbonate precipitation is obtained by leveraging the metabolic activity of microorganisms. Studies have shown that biomineralization can be ... -
Experimental and numerical investigation of rubber whether strip extrusion
Talib, Nayyef Ahmed (2019-01-03)Extrusion is the main method used to produce rubber weather strips in automotive industries. The product quality is dependent on many factors, which include the design parameters of the die, the processing variables, and ... -
Extrusion and rheological characterization of cement-based materials containing different types of clays
Aydın, Eylül Mina (2021-01)Recently, digital manufacturing has been termed the fourth industrial revolution (Industry 4.0). Implementation of digital manufacturing revolutionizes the construction industry with the potential of freeform architecture, ... -
Fly-ash evaluation as potential EOL material replacement of cement in pastes: Morpho-structural and physico-chemical properties assessment
Vasile, B. S.; Nicoara, A. I.; Surdu, V. A.; Ene, V. L.; Neacsu, I. A.; Stoica, A. E.; Oprea, O.; Boierasu, I.; Trusca, R.; Vrabec, M.; Miklavic, B.; Sturm, S.; Ow-Yang, C.; Gulgun, M. A.; Bundur, Zeynep Başaran (MDPI, 2022-04-24)The main objective of the study was to produce alternative binder materials, obtained with low cost, low energy consumption, and low CO2 production, by regenerating end-of-life (EOL) materials from mineral deposits, to ...
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