Browsing by Author "Sari, Y. Dursun"

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Citation - WoS: 5
Citation - Scopus: 7
Clay Content Effects on Triaxial Swelling Characteristics of Clay-Bearing Samples
(Sila Science, 2012) Bilir, M. Erdinc; Sari, Y. Dursun; Muftuoglu, Yadigar V.; Donmez, Senayi; Department of Civil Engineering; Department of Civil Engineering; 15. Graduate School of Natural and Applied Sciences; 01. Atılım University
There are some factors which have an important influence on the swelling characteristics of clay-bearing structures such as type of clay mineral, clay content, stress path, confinement, and scale effect. This paper includes a study of some of these factors of a reconstituted clay-bearing rock samples using a computer-controlled triaxial swelling test apparatus. According to the test results, almost the same swelling potential and stress are observed for the samples having the same density, diameter/height ratio, smectite content, and a confining pressure. On the other hand, the smectite content and confining pressure have a significant influence on the swelling behavior.
Citation - WoS: 9
Citation - Scopus: 10
Determination of the Relationship Between Uniaxial and Triaxial Swelling Equations for Clay Bearing Rocks
(Springer Heidelberg, 2013) Bilir, M. Erdinc; Sari, Y. Dursun; Ozarslan, Ahmet; Genis, Melih; Sel, Ibrahim; Department of Civil Engineering; 15. Graduate School of Natural and Applied Sciences; 01. Atılım University
Design in swelling mediums is mostly based on uniaxial data since the standards proposed by the International Society for Rock Mechanics Commission on Swelling Rocks for uniaxial tests are in the form of recommendations, triaxial sets are not highly available; and there is no standard developed for triaxial tests. The main purpose of this study is to define the relationship between the uniaxial and the triaxial swelling equations and to predict the triaxial values using the uniaxial data. The other purpose of the study is to contribute to the development of the standards and to expand the data available in the literature about triaxial swelling behavior. Numerous uniaxial and triaxial swelling tests were performed on the samples from seven different locations, in Turkey, in a state of the art swelling laboratory. As a result of the determination of the triaxial swelling behavior of these samples, the relationships between the uniaxial and the triaxial swelling data for the individual samples as well as the whole set of samples are expressed by the equations derived from the statistical analyses.
A DIGITAL IMAGE ANALYSIS BASEDSURFACE POLISH MEASUREMENT SYSTEM
(Pamukkale Univ, 2005) Donmez, Senayi; Sari, Y. Dursun; Department of Civil Engineering; 15. Graduate School of Natural and Applied Sciences; 01. Atılım University
Because marble and natural rocks have been used widely for ornamental purposes, rubbing-polishing process also became important. One of the factors determining the quality of natural rocks is surface polish. The degree of surface polish is determined by qualitative definitions based on experiences in the plants natural rocks are processed. In this study, a digital image analysis based surface polish measurement system which measures surface polish systematically was developed and its validity and suitability were investigated by making experiments on a natural rock sample.
Citation - WoS: 144
Citation - Scopus: 175
Effects of Elevated Temperature on Compressive Strength and Weight Loss of the Light-Weight Concrete With Silica Fume and Superplasticizer
(Elsevier Sci Ltd, 2008) Sancak, Emre; Sari, Y. Dursun; Simsek, Osman; Department of Civil Engineering; 15. Graduate School of Natural and Applied Sciences; 01. Atılım University
In this study, structural light-weight concretes produced by Pumice (LWC) and concretes with normal-weight aggregate (NWC) were investigated. Compressive strength and weight loss of the concretes were determined after being exposed to high temperatures (20, 100, 400, 800, 1000 degrees C). To achieve these objectives, 12 different types of concrete mixtures were produced. In producing the mixtures, silica fume (SF) was used to replace the Portland cement in the ratios of 0%, 5% and 10% by weight. Half of the mixtures were obtained by adding superplasticizers (SP) to the above mixtures in the ratio of 2% by weight. In conclusion; unit weight of LWC was 23% lower than that of NWC. The LWC containing 2% SP could retain 38% of the initial compressive strength. Rate of deterioration was higher in NWC when compared to LWC. The loss of compressive strengths increased depending on the ratio of using SF at about 800 degrees C and over. (C) 2008 Elsevier Ltd. All rights reserved.