Browsing by Author "Muftuoglu, Yadigar V."

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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: 5
Computer-controlled triaxial test apparatus for measuring swelling characteristics of reconstituted clay-bearing rock
(Amer Soc Testing Materials, 2008) Bilir, M. Erdinc; Sari, Dursun; Muftuoglu, Yadigar V.; Department of Civil Engineering; 15. Graduate School of Natural and Applied Sciences; 01. Atılım University
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.