Browsing by Author "Bilir, M. Erdinc"

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Citation Count: 5
Clay Content Effects on Triaxial Swelling Characteristics of Clay-Bearing Samples
(Sila Science, 2012) Bilir, M. Erdinc; Sarı, Yasin Dursun; Sari, Y. Dursun; Muftuoglu, Yadigar V.; Donmez, Senayi; Department of Civil Engineering
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 Count: 5
Computer-controlled triaxial test apparatus for measuring swelling characteristics of reconstituted clay-bearing rock
(Amer Soc Testing Materials, 2008) Sarı, Yasin Dursun; Sari, Dursun; Muftuoglu, Yadigar V.; Department of Civil Engineering
To avoid problems encountered during and after the construction of engineering projects built within swelling rocks and soils, real data related to swelling stress and strains should be used to model such phenomena. A computer-controlled triaxial swelling test apparatus was developed to determine the swelling potentials for rock and soil specimens. It allows one to measure three-dimensional swelling strains and stress in a cylindrical specimen under variable axial and confinement stress variables. Triaxial swell tests were performed using three different procedures: free swell, strain-controlled, and stress-controlled under different axial and confinement stress conditions. The results of several tests conducted on reconstituted clay-bearing rock samples were statistically analyzed and mathematical models were presented and evaluated.
Citation Count: 7
Determination of the Relationship Between Uniaxial and Triaxial Swelling Equations for Clay Bearing Rocks
(Springer Heidelberg, 2013) Bilir, M. Erdinc; Sarı, Yasin Dursun; Sari, Y. Dursun; Ozarslan, Ahmet; Genis, Melih; Sel, Ibrahim; Department of Civil Engineering
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.