Irem Zeynep YILDIRIM

Dr. Irem Zeynep YILDIRIM

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Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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26 October 2011 in Advances in Civil Engineering
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IYIrem Zeynep YILDIRIM
Irem Zeynep YILDIRIM
MPMonica Prezzi
Monica Prezzi
Steel slag is a byproduct of the steelmaking and steel refining processes. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace (BOF) steelmaking, electric-arc-furnace (EAF) steelmaking, and ladle-furnace steel refining processes. The mineralogical and morphological properties of BOF and electric-arc-furnace-ladle [EAF(L)] slag samples generated from two steel plants in Indiana were determined through X-Ray Diffraction (XRD) analyses and Scanning Electron Microscopy (SEM) studies. The XRD patterns of both BOF and EAF(L) slag samples were very complex, with several overlapping peaks resulting from the many minerals present in these samples. The XRD analyses indicated the presence of free MgO and CaO in both the BOF and EAF(L) slag samples. SEM micrographs showed that the majority of the sand-size steel slag particles had subangular to angular shapes. Very rough surface textures with distinct crystal structures were observed on the sand-size particles of BOF and EAF(L) slag samples under SEM. The characteristics of the steel slag samples considered in this study are discussed in the context of a detailed review of steel slag properties.
1 December 2015 in Journal of Materials in Civil Engineering
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Journal Article
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IYIrem Zeynep YILDIRIM
Irem Zeynep YILDIRIM
MPMonica Prezzi
Monica Prezzi
1 June 2009 in Journal of Materials in Civil Engineering
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Journal Article
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SYSungmin Yoon
Sungmin Yoon
Umashankar BalunainiUmashankar Balunaini
Umashankar Balunaini
IYIrem Zeynep YILDIRIM
Irem Zeynep YILDIRIM
MPMonica Prezzi
Monica Prezzi
NSNayyar Z. Siddiki
Nayyar Z. Siddiki
Fly ash and bottom ash are coal combustion by-products (CCBPs) that are generated in large quantities throughout the world. It is often economical to dispose ash as mixtures rather than separately; that notwithstanding, only a few studies have been performed to investigate the behavior of fly and bottom ash mixtures, particularly those with high contents of fly ash. Also, there is very limited data available in the literature on the field performance of structures constructed using ash mixtures. This paper describes the construction and the instrumentation of a demonstration embankment built with an ash mixture (60:40 by weight of fly ash:bottom ash) on State Road 641, Terre Haute, Ind. Monitoring of the demonstration embankment was conducted for a period of 1 year from the start of construction of the embankment. The settlement of the embankment stabilized approximately 5 months after the end of its construction. According to horizontal inclinometer readings, the differential settlement at the top of the...
1 November 2017 in Construction and Building Materials
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Journal Article
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IYIrem Zeynep YILDIRIM
Irem Zeynep YILDIRIM
MPMonica Prezzi
Monica Prezzi
1 December 2009 in Journal of Geotechnical and Geoenvironmental Engineering
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Journal Article
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HSHoyoung Seo
Hoyoung Seo
IYIrem Zeynep YILDIRIM
Irem Zeynep YILDIRIM
MPMonica Prezzi
Monica Prezzi
Most of the current design methods for driven piles were developed for closed-ended pipe piles driven in either pure clay or clean sand. These methods are sometimes used for H piles as well, even though the axial load response of H piles is different from that of pipe piles. Furthermore, in reality, soil profiles often consist of multiple layers of soils that may contain sand, clay, silt or a mixture of these three particle sizes. Therefore, accurate prediction of the ultimate bearing capacity of H piles driven in a mixed soil is very challenging. In addition, although results of well documented load tests on pipe piles are available, the literature contains limited information on the design of H piles. Most of the current design methods for driven piles do not provide specific recommendations for H piles. In order to evaluate the static load response of an H pile, fully instrumented axial load tests were performed on an H pile ( HP 310×110 ) driven into a multilayered soil profile consisting of soils com...
24 October 2020 in International Journal of Pavement Engineering
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Journal Article
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IYIrem Zeynep YILDIRIM
Irem Zeynep YILDIRIM
MPMonica Prezzi
Monica Prezzi
This study investigates the viability of using electric-arc-furnace steel slag (EAF SS)-blast furnace slag (BFS) and EAF SS-Class C fly ash (FA) mixtures as a replacement for lime or cement in subgrade stabilisation applications and describes the implementation and performance of the selected mixture in the field. In order to decide on the proportions of EAF SS, BFS and Class C FA to be used in the field, tests were performed to obtain the Proctor compaction curves and the Atterberg limits (AL) of mixtures of soil-7% EAF SS-3% BFS and soil-7% EAF SS-3% Class C FA; in addition, the one dimensional swelling behaviour of samples prepared with these mixtures was monitored for over two months. The strength of the stabilised mixtures was determined through unconfined compressive (UC) strength tests. Based on the laboratory test results, the soil-7% EAF SS-3% Class C FA mixture was selected and implemented as a subgrade material in a pavement project in Indiana. Field subgrade compaction quality control was done by performing Dynamic Cone Penetration Tests (DCPT) and Nuclear Gauge (NG) density tests. No cracks or signs of distress were observed on the surface of the subgrade before and after placement of the base course and concrete.