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Bilgiç, Esra
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01. Izmir Institute of Technology
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Sustainable Development Goals
1NO POVERTY
1
Research Products
2ZERO HUNGER
1
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3GOOD HEALTH AND WELL-BEING
0
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4QUALITY EDUCATION
1
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5GENDER EQUALITY
0
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6CLEAN WATER AND SANITATION
3
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7AFFORDABLE AND CLEAN ENERGY
1
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8DECENT WORK AND ECONOMIC GROWTH
1
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9INDUSTRY, INNOVATION AND INFRASTRUCTURE
2
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10REDUCED INEQUALITIES
1
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11SUSTAINABLE CITIES AND COMMUNITIES
2
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12RESPONSIBLE CONSUMPTION AND PRODUCTION
2
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13CLIMATE ACTION
3
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14LIFE BELOW WATER
1
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15LIFE ON LAND
2
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16PEACE, JUSTICE AND STRONG INSTITUTIONS
1
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17PARTNERSHIPS FOR THE GOALS
0
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Scholarly Output
5
Articles
4
Views / Downloads
3799/2342
Supervised MSc Theses
1
Supervised PhD Theses
0
WoS Citation Count
34
Scopus Citation Count
56
Patents
0
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0
WoS Citations per Publication
6.80
Scopus Citations per Publication
11.20
Open Access Source
5
Supervised Theses
1
| Journal | Count |
|---|---|
| Construction and Building Materials | 1 |
| Hydrology | 1 |
| Land | 1 |
| Turkish Journal of Earth Sciences | 1 |
Current Page: 1 / 1
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5 results
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Now showing 1 - 5 of 5
Article Citation - WoS: 2Citation - Scopus: 3A New Method To Quantify the Robustness of Self-Consolidating Grouts(Elsevier, 2019) Erdem, Tahir Kemal; Bilgiç, Esra; Bilgiç, Esra; Erdem, Tahir Kemal; Kanpara Cıvaş, Züleyha; 01. Izmir Institute of Technology; 03.03. Department of Civil Engineering; 03. Faculty of EngineeringThere are different methods in literature to evaluate the robustness of highly fluid cementitious mixtures. However, no one of them gained widely acceptance due to the relative advantages and disadvantages involved in each of them. Therefore, there is still need for further research on this topic. This study proposes a new and relatively easy method for quantifying the robustness of self-consolidating grouts by calculating so-called robustness indices. Due to the more difficulty to produce robust mixtures for highly fluid mixtures obtained by very powerful chemicals, the method is based on the variations in the superplasticizer (SP) type and amount. Mineral admixture (fly ash or limestone powder) usage and water-to-binder ratio (w/b) were other parameters investigated in this study. It was found that SP type was the most important factor affecting the robustness. The effect of w/b was less when compared to SP type. The mixtures containing naphthalene-based SP were more robust than those containing polycarboxylate-based SP. Mineral admixture type and amount had the least effect on robustness. (C) 2019 Elsevier Ltd. All rights reserved.Master Thesis Use of Excess Paste Theory and Image Analysis To Investigate Properties of Pervious Concrete(Izmir Institute of Technology, 2019) Bilgiç, Esra; Bilgiç, Esra; Erdem, Tahir Kemal; Erdem, Tahir Kemal; 01. Izmir Institute of Technology; 03.03. Department of Civil Engineering; 03. Faculty of EngineeringPervious concrete is a type of special concrete that is formed with interconnected pores. It is able to pass the stormwater through its pores in order to control surface runoff and groundwater effectively. Due to the environmental benefits of pervious concrete, the usage of it has been increased day by day. In this thesis, the properties of pervious concrete by using excess paste theory and image analysis method were investigated. Concrete mixtures were prepared with four different aggregate gradations by combining three aggregate sizes (4-8 mm, 8-12.5mm and 12.5-16 mm), three different volume of paste to the volume of aggregate ratios (0.39, 0.42, and 0.45) and superplasticizer in three different ratios (0.5%, 0.7%, and 0.9%). For the determination of paste thickness in pervious concrete, excess paste theory and image analysis were used. For the determination of surface area of aggregate AutoCAD ReCap and some models were used. For the determination of fresh properties of pervious concrete, slump test, the density test of fresh pervious concrete and rheological measurements of cement paste were done. Permeability, compressive and flexural strength, abrasion resistance, density test, and void content tests were performed on hardened pervious concrete. To sum up, just as paste thickness results, the ratio volume of paste to the volume of aggregate, aggregate gradations, and the usage ratios of superplasticizer affected the performance of concrete. Results showed that increasing paste to aggregate ratio and superplasticizer dosage caused more workable concrete, more paste thickness, less permeability, less void, and more compressive strength.Article Citation - WoS: 4Citation - Scopus: 15Effects of Seismic Activity on Groundwater Level and Geothermal Systems in İzmir, Western Anatolia, Turkey: the Case Study From October 30, 2020 Samos Earthquake(TÜBİTAK - Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, 2021) Uzelli, Taygun; Baba, Alper; Bilgiç, Esra; Bilgiç, Esra; Öztürk, Bahadır; Uzelli, Taygun; Baba, Alper; Öztürk, Bahadır; Sözbilir, Hasan; Tatar, Orhan; 01. Izmir Institute of Technology; 03.03. Department of Civil Engineering; 01.01. Units Affiliated to the Rectorate; 03. Faculty of EngineeringThe October 30, 2020 Samos earthquake (Mw 6.6) affected the Aegean Sea and environs, caused destruction and loss of life in the city of İzmir located 70 km away from the earthquake epicenter. Before this earthquake, water resources were monitored in the areas of Bayraklı, Gülbahçe, and Seferihisar. For this purpose, 10 groundwater monitoring wells were drilled in the Bayraklı area, where groundwater level, temperature, and electrical conductivity changes were monitored at 1-h intervals in 5 wells. Besides physical parameters such as groundwater levels, temperatures and electrical conductivities, hydrogeochemical cations, and anions measured in the study area. Change in the groundwater levels was observed before, during, and after the Samos earthquake. A trend of rising groundwater level was observed two days before the mainshock, to a height of 10 cm, and the level was maintained till the end of the earthquake. The water levels returned to its original height after about 7 to 10 days of the earthquake. Moreover, electrical conductivity (EC) values were changed because of the interaction with the surrounding rocks and well walls, mixing with different waters during the earthquake shaking. The essential anomalies were observed in the geothermal fields of Gülbahçe and Seferihisar. Due to this earthquake, new geothermal springs emerged along the NE-SW trending Gülbahçe and Tuzla faults, located about 50 to 20 km from the Samos earthquake epicenter, respectively. The new geothermal waters are in Na-Cl composition and similar to other geothermal springs in the region. While the recorded water temperatures in the new geothermal springs vary from 40 to 45 °C in Seferihisar, it was measured between 35 and 40 °C in Gülbahçe. Due to these anomalies, it is found essential to monitor the effect of the earthquake on the physical and chemical characteristics of the groundwater and its usefulness in earthquake predictions.Review Citation - WoS: 25Citation - Scopus: 35Evolution of Floods: From Ancient Times To the Present Times (ca 7600 Bc To the Present) and the Future(MDPI, 2023) Angelakis, Andreas N.; Capodaglio, Andrea G.; Baba, Alper; Bilgiç, Esra; Ahmed, Abdelkader T.; Mandi, Laila; Tzanakakis, Vasileios A.; Kumar, Rohitashw; Min, Zhang; Han, Mooyoung; Bashiru, Turay; Derkas, Nicholas; Baba, Alper; Bilgiç, Esra; 01. Izmir Institute of Technology; 03.03. Department of Civil Engineering; 03. Faculty of EngineeringFloods are one of the most dangerous natural disasters, causing great destruction, damage, and even fatalities worldwide. Flooding is the phenomenon of a sudden increase or even slow increase in the volume of water in a river or stream bed as the result of several possible factors: heavy or very long precipitation, melting snowpack, strong winds over the water, unusually high tides, tsunamis, or the failure of dams, gages, detention basins, or other structures that hold back water. To gain a better understanding of flooding, it is necessary to examine evidence, search for ancient wisdom, and compare flood-management practices in different regions in a chronological perspective. This study reviews flood events caused by rising sea levels and erratic weather from ancient times to the present. In addition, this review contemplates concerns about future flood challenges and possible countermeasures. Thus, it presents a catalogue of past examples in order to present a point of departure for the study of ancient floods and to learn lessons for preparation for future flood incidents including heavy rainfalls, particularly in urbanized areas. The study results show that ancient societies developed multifaceted technologies to cope with floods and many of them are still usable now and may even represent solutions and measures to counter the changing and increasingly more erratic weather of the present.Review Citation - WoS: 3Citation - Scopus: 3Evolution of Tunneling Hydro-Technology: From Ancient Times To Present and Future(MDPI, 2023) Angelakis, Andreas N.; Baba, Alper; Bilgiç, Esra; Krasilnikoff, Jens A.; Tzanakakis, Vasileios A.; Ahmed, Abdelkader T.; Baba, Alper; Kumar, Rohitashw; Capodaglio, Andrea G.; Dercas, Nicholas; Bilgiç, Esra; 01. Izmir Institute of Technology; 03.03. Department of Civil Engineering; 03. Faculty of EngineeringWater tunnels are one of the oldest hydro-technologies for extracting water resources and/or transmitting them through water distribution systems. In the past, human societies have used tunneling for various purposes, including development, as a measure to enable underground resource extraction and the construction of transportation networks in challenging landscapes and topographies. The development of hydro-technology potentially involves the construction of tunnels to feed aqueducts, irrigation and waste water systems. Thus, the ability to make and maintain tunnels became an important component in creating lasting and sustainable water systems, which increased water supply and security, minimized construction costs, and reduced environmental impact. Thus, this review asks how, when and why human societies of the past included tunneling for the development of lasting water supply systems. This review presents a comprehensive overview across time and space, covering the history of tunneling in hydro technology from antiquity to the present, and it ponders how past experiences could impact on future hydro-technological projects involving tunneling. A historical review of tunnel systems enhances our understanding of the potential, performance, challenges, and prospects associated with the use of hydro-techniques. In the past, as the different examples in time and space demonstrate, tunneling was often dedicated to solving local problems of supply and disposal. However, across the world, some features were repeated, including the need for carving through the living rock or digging to create tunnels covered with stone slabs. Also, the world-wide use of extensive and costly tunnel systems indicates the high level of investment which human societies are willing to make for securing control over and with its water resources. This study helps us to gather inspiration from proven technologies of the past and more recent knowledge of water tunnel design and construction. As we face global warming and its derivate problems, including problems of water scarcity and flooding, the ability to create and maintain tunnels remains an important technology for the future.