Browsing Civil Engineering by Author "Bundur, Zeynep Başaran"
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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-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 ... -
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 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 ... -
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 ... -
Immobilization of bacterial cells on natural minerals for self-healing cement-based materials
Sandalcı, Ilgın; Tezer, M. M.; Bundur, Zeynep Başaran (Frontiers Media, 2021-04-13)Recent research in the field of concrete materials showed that it might be possible to develop a smart cement-based material that is capable of remediating cracks by Microbial-induced calcium carbonate precipitation (MICP). ... -
Impact of air entraining admixtures on biogenic calcium carbonate precipitation and bacterial viability
Bundur, Zeynep Başaran; Amiri, Ali; Ersan, Y. C.; Boon, N.; Belie, N. de (Elsevier, 2017)The applications of self-healing in cement-based materials via biomineralization processes are developing quickly. The main challenge is to find a microorganism that can tolerate the restricted environment of cement paste ... -
Influence of Sporasarcina pasteurii cells on rheological properties of cement paste
Azima, Mahzad; Bundur, Zeynep Başaran (Elsevier, 2019-11-20)Nowadays with the developments in the concrete materials technology, researches started to focus on highly flowable mixes with improved rheological properties. These highly flowable mixes generally require use of viscosity ... -
Use of biomineralisation in developing smart concrete inspired by nature
Zhang, B.; Bundur, Zeynep Başaran; Mondal, P.; Ferron, R. D. (Inderscience, 2015)Recently, interest has focused on leveraging the biological functions of microorganisms to develop smart cement-based materials. This paper provides an overview of the calcium carbonate biomineralisation process in nature ... -
Use of corn-steep liquor as an alternative carbon source for biomineralization in cement-based materials and its impact on performance
Amiri, Ali; Bundur, Zeynep Başaran (Elsevier, 2018-03-20)Early age microcracks are generally the primary cause for a decrease in service life of cement-based structures. Recent studies suggested that it might be possible to develop a smart cement-based material that could self-heal ... -
Use of natural minerals to immobilize bacterial cells for remediating cracks in cement-based materials
Tezer, M. M.; Bundur, Zeynep Başaran (ASCE, 2022-03-01)Cracks in cement-based materials are one of the main factors affecting the durability of structure. Recent research in the field of concrete materials showed that self-healing in cement-based systems can be achieved by ... -
Use of pre-wetted lightweight fine expanded shale aggregates as internal nutrient reservoirs for microorganisms in bio-mineralized mortar
Bundur, Zeynep Başaran; Kirisits, M. J.; Ferron, R. D. (Elsevier, 2017-11)Interest in developing bio-based self-healing cement-based materials has gained broader attention in the concrete community. One of challenges in developing bio-based self-healing cement-based materials is that cell death ...
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