Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Yilmaz, Fatih(3)
- Demir, Ersin(2)
- Güven, Onur(2)
- Yılmaz, Mehmet Fatih(2)
- Aktaş, Yasemin(1)
- Biçgel, Birsen F.(1)
- Can, Ömer(1)
- Duman, Vedat(1)
- Guler, Cuneyt(1)
- Güler, Cüneyt(1)
- Kamiloğlu, Hakan Alper(1)
- Korkmaz, Serdar(1)
- Kurt, Mehmet A.(1)
- Kurt, Mehmet Ali(1)
- Sadoglu, Erol(1)
- Türkkan, Gökçen Eryılmaz(1)
- Yıldırm, Ümit(1)
- Yıldırım, Ümit(1)
- Yıldızoğlu, Halime(1)
Yayınlar
- MakaleAçık Erişim2022Scopus SJRQ4Tarsus Kıyı Akiferi’nde (Mersin) Meydana Gelen Tuzlanmanın Nedenlerinin Araştırılması
Yıldırım, Ümit; Guler, Cuneyt; Kurt, Mehmet Ali; Güven, Onur
Bu çalışmada, Türkiye’nin Doğu Akdeniz bölgesinde yer alan Tarsus Kıyı Akiferi’nde (Mersin) görülen tuzlanma olayının nedenleri araştırılmıştır. Özellikle Akdeniz havzası genelinde kritik bir problem olan yeraltı sularının tuzlanması olayı, deniz suyu girişimi, iklim değişikliği, jeojenik etkiler ve antropojenik faaliyetler (kirlilik ve hidrolojik müdahaleler) gibi süreçlerin ve mekanizmaların bir sonucu olarak karşımıza çıkmaktadır. Bu kapsamda, Eylül 2020’de yapılan saha çalışmasında 87 yeraltı suyu kuyusundan ve deniz suyundan (Akdeniz) örnekler alınmıştır. Alınan su örneklerinin sıcaklık, elektriksel iletkenlik, pH, tuzluluk, indirgenme-yükseltgenme (redoks) potansiyeli, çözünmüş oksijen ve toplam çözünmüş madde değerleri arazide ölçülmüştür. Su örneklerinin majör iyon ve iz element içerikleri (Ca+2, Mg+2, Na+, K+, HCO3-, CO3-2, Cl-, SO4-2, NO3-, NO2-, B, Br, Sr ve Li) laboratuvarda spektrometrik (ICP-MS), spektrofotometrik ve volumetrik (titrasyon) yöntemlerle analiz edilmiştir. Analiz edilen bu parametrelere ait tematik dağılım haritaları bir Coğrafi Bilgi Sistemi (CBS) yazılımı kullanılarak oluşturulmuştur. Alınan su örneklerinin hidrokimyasal fasiyesleri, Piper ve HFE diyagramları kullanılarak belirlenmiştir. Ayrıca, bölgede görülen tuzlanma mekanizmalarını açıklamak amacıyla, çeşitli majör iyonlara ve/veya iz elementlere ait oranların kullanıldığı ikili (x-y) grafikler oluşturulmuştur. Elde edilen sonuçlara göre; Tarsus Kıyı Akiferi’ni etkileyen tuzlanma olayının; deniz suyu girişimi, Messiniyen evaporitlerinin (anhidrit, jips ve halit) çözünmesi ve antropojenik (tarımsal ve endüstriyel) faaliyetler sonucunda meydana geldiği ortaya konulmuştur.
AtıfOpenAlex2TR Dizin2
İncele - MakaleAçık Erişim2021Strength and Durability Performance of Clayey Soil Stabilized with Lime and Marble Powder
Yilmaz, Fatih; Demir, Ersin
This paper investigated the effect of freezing-thawing and wetting-drying cycles on the strength and durability of clay soil stabilized with lime and marble powder. The test samples were prepared by adding 5%, 10%, 15% and 20% of marble powder, without and with 6% lime to the soil which is a high plasticity clay (CH) according to the Unified Soil Classification System. Unconfined compressive strength tests were performed after 7 and 28 days of curing periods. The durability behavior of the samples was examined by applying freezing-thawing and wettingdrying cycles to the prepared samples. The results of this study show that the presence of marble powder in the soil mixture has an important role in the improvement of strength. An increase in the number of wetting-drying cycles does not decrease the volumetric stability of the samples stabilized with marble powder. The use of lime and marble powder together increased the strength values compared to the natural soil and the use of lime only. It was concluded that the co-use of lime and marble powder had a positive effect on the strength and durability behavior of high plasticity clayey soil.
AtıfTR Dizin1İncele - MakaleYalnız künye2021Arsenic pollution caused by Eocene volcanism in the Sivas basin: The old drinking water source of the Yalıncak village (Hafik, Sivas)
Güler, Cüneyt; Güven, Onur; Biçgel, Birsen F.; Kurt, Mehmet A.; Yıldırm, Ümit
The aim of this study is to investigate the origin of the highconcentration (1512 μg/L) of arsenic (As) in the olddrinking water source of Yalıncak village (Hafik, Sivas).For this purpose, 48 samples were collected from the rocksoutcropping in the recharge area of the drinking watersource. The major oxide contents of the rock samples weredetermined by XRF method, mineralogical compositionsby polarizing microscope and XRD methods and Asconcentrations of minerals were determined by using SEM- EDS method. As revealed by these analyses, the source ofarsenic in the waters of the region was found out to betuffite unit, containing pyroxene and plagioclase minerals,as well as volcanic glass fragments of different origins andsizes. It has been detected that arsenic oxide (As2O3)concentrations in rock samples vary between 0.01% and0.14% and some minerals contain As up to 14%. It wasdetermined that arsenic pollution in surface andgroundwater in the region was caused by the dissolution (bywater-rock interaction) of FeAsS (arsenopyrite) and BAsO4(boron arsenate) minerals found in the tuffites of theEocene age Bozbel formation in the Sivas Basin.
AtıfTR Dizin2İncele - MakaleYalnız künye2020The earthquakes in erzincan (xo-xv. centuries)
Aktaş, Yasemin
Having an important position in Anatolia, Erzincan was a social, cultural and commercially developed city. The city, which continued its development during the hegemonies of Mengücek, Seljuk and İlhanlı, was adversely affected by a number of political and social events. The fact that Erzincan is located on the Northeast Anatolian Fault Line is an important factor in experiencing these negative events. The earthquakes on this fault line have been the most devastating disaster in the region. In Erzincan, subjected to severe earthquakes during the history, significant destructions had occurred and thousands of people had lost their lives. Secondary disasters such as floods and landslides caused by severe ground shakes play an important role in the increase of casualties. Earthquakes in the Middle Ages have been tried to be explained due to certain reasons. The reason for the earthquakes in Erzincan is explained by being connected to a number of events such as God’s punishment for the bad lives of people or the mismanagement of the administrators. In this study, the earthquakes in Erzincan between XI-XV. centuries and their consequences are dealt with.
AtıfTR Dizin2İncele - MakaleAçık Erişim2020Usability of Midyat Stone Wastes in Soil Stabilization
Yilmaz, Fatih; Duman, Vedat
Improving the geotechnical properties of weak soils is described as soil stabilization. In this study, industrial wastes of Midyat stone were used to carry out soil stabilization. Midyat stone wastes, which are evaluated in the improvement of a low plasticity clay soil, were mixed with natural soil at 5%, 10%, 15% and 20% additive percentages. In the light of the data obtained, the presence of a different binder was needed and lime was chosen as the primary binder. Index, strength and durability tests were carried out in mixtures containing 5%, 10%, 15% and 20% Midyat stone waste with and without lime. When the results of the experiments were examined, it was determined that the use of Midyat stone waste as an additive alone was ineffective on strength and durability values. In use with lime, 49% increase in strength has been determined compared to only lime sample. As a result of the study determined that the effect of Midyat stone wastes on freezing-thawing is very limited and more effective on wetting-drying, it was concluded that these wastes can be used for stabilization of low plasticity soils with lime.
AtıfOpenAlex1TR Dizin1İncele - MakaleAçık Erişim2019Freezing-Thawing and Wetting-Drying Behavior of Clayey Soil Stabilized with Lime and Silica Fume
Demir, Ersin; Yılmaz, Mehmet Fatih
Soil stabilization is defined as improving the physical, chemical, hydraulic and mechanical properties of soilsthat are insufficient in terms of engineering properties. In this study, stabilization of high plasticity clayey soilwith silica fume and lime was investigated to examine strength and durability behavior of stabilized soil. Thetest samples were prepared by adding 5%, 10%, 15% and 20% of silica fume, without lime and with 6% limeto the natural soil which is a high plasticity clay (CH) according to the Unified Soil Classification System. Thecuring time is 7 and 28 days. At the end of these curing periods, unconfined compressive strength tests wereperformed. After 28 days of curing, 12 wetting-drying and freezing-thawing cycles were completed anddurability behavior of the samples were examined. In the light of the obtained data, it was determined that SLSsamples containing silica fume and lime had higher strength values than SL samples containing only lime. Silicafume increase the strength values after curing periods and has positive effects on the soil durability in terms offreezing-thawing test.
AtıfOpenAlex3TR Dizin3İncele - MakaleAçık Erişim2019Farklı İstinat Duvar Tiplerinde Aktif Toprak Basınçlarının Sayısal Analizi
Sadoglu, Erol; Yılmaz, Mehmet Fatih; Kamiloğlu, Hakan Alper
Dayanma yapılarının tasarımında yatay toprak basıncı dağılımı önem arz etmektedir. Birçok çalışmada, dayanma yapısına etkiyen aktif toprak basınç dağılımı nonlineer olarak kabul edilir. Toprak basınç dağılışı ile ilgili çok sayıda çalışma olmasına karşın, Duvar boyutlarının yatay toprak basıncı dağılışı üzerine etkilerini irdeleyen az sayıda çalışma bulunmaktadır. Bu çalışmada, duvar şeklinin aktif yanal toprak basınç dağılımı ve aktif kırılma yüzeyleri üzerine etkisi incelenmiştir. Bu nedenle çeşitli tip dayanma duvarlarına gelen yanal toprak basınç dağılışları ve oluşturdukları kırılma yüzeyleri numerik olarak irdelenmiştir. Yapılan çalışma kapsamında, çeşitli eğimlerdeki ağırlık tipi dayanma duvarları, farklı topuk uzunlukları ve eğime sahip ters T biçimli dayanma duvarları göz önüne alınmıştır. Yapılan çalışma sonucunda yanal toprak basınç dağılışının duvar tipine göre değiştiği belirlenmiştir. Buna ek olarak duvar eğimi ve topuk uzunluğunun kırılma yüzeyleri ve yanal toprak basınç dağılışı üzerinde etkili olduğu görülmüştür.
AtıfTR Dizin1İncele - MakaleAçık Erişim2018Determination of Earthquake Performance in Masonry Buildings (Bayburt Korkut Ata High School Example)
Can, Ömer; Yıldızoğlu, Halime
There are many buildings which are historical and cultural values in Turkey. These structures are of great importance in terms of reflecting the accumulation and techniques of different times and cultures. It is possible to elaborate the performance of reinforced concrete and steel structures constructed with today's technology with advanced numerical methods. But difficulties can be encountered in determining and interpreting the structural performance due to the discontinuities and the changing material properties of the historic agglomerations. In this study; The construction technique, material properties and location features of Korkut Ata High School, which was built between 1944-1947 in Bayburt province center, was compiled. The existing problems observed in the structure have been identified. Using the StatiCAD-Masonry program, it was aimed to perform the performance analysis by taking into account the principles of the 2007 Earthquake Regulation and the 2013 Risky Buildings Regulation. Parallel to the analyzes carried out, the structural performance of the carrier system was evaluated.
AtıfOpenAlex7TR Dizin7İncele - MakaleAçık Erişim2018Kademeli pompalama testleri ile kuyu performansının zaman içinde değişiminin incelenmesi
Türkkan, Gökçen Eryılmaz; Korkmaz, Serdar
Bu çalışmanın amacı, kademeli pompalama testi ile kuyu performansının yıllar içerisindekideğişimini incelemektir. Çalışmada Neojen Mühendislik tarafından Bursa Küçük Sanayi bölgesindekiserbest akiferde açılan 27 metre derinliğindeki kuyu kullanılmıştır. İlk olarak 2 Kasım 2012 tarihinde biradet kademeli pompalama testi yapılmıştır. Kademeli pompalama testi, aynı kuyuda 23 Mart 2017tarihinde tekrar yapılmıştır. Arazi çalışması sonucu elde edilen kademeli pompalama test verileriHantush-Bierschenk ve Rorabaugh analitik metotları ile çözülüp kuyu performans parametreleri eldeedilmiştir. İki testin uygulandığı tarih arasında kuyu verimindeki ve özgül kapasitedeki değişimincelenmiştir. Kuyu performansının artırılması için öneriler sunulmuştur
- MakaleYalnız künye2017Fineness Effect of Pozzolanic Additive on Strength in Soil Stabilization
Yilmaz, Fatih
Improvement of physical, chemical, mechanical and hydraulic properties of poor bearing soil is called soil stabilization. Within the scope of this study perlite, has inadequate cementing ability by oneself, was used as a pozzolanic additive in stabilization of clayey soil. Lime was chosen as a primary binder due to its high CaO content. Soil was mixed with 6% of lime (optimum lime ratio) and 0%, 5%, 10%, 15%, 20%, 25%, 30% of perlite. Pozzolanic additive perlite was evaluated in natural and finely granulated forms in stabilization study. Geotechnical properties such as index and strength features of mixtures and how this properties may change by fining perlite was considered in the scope of this study. After 84 days of curing period, the highest unconfined compressive strength was determined as 3196 kPa in the samples containing lime and 20% perlite. Samples in which fine perlite was used as an additive material, the highest unconfined compressive strength was reached 3408.9 kPa in samples containing lime and 15% fine perlite. As a result of this study, in which by fining of perlite lower perlite rate gives higher strength values, it was found that fineness of pozzolanic additive perlite has direct effect in strength values
AtıfTR Dizin5İncele