The aim of this study is to scrutinize whether, in terms of saturation, the 48 hour duration suggested by ISRM (International Society for Rock Mechanics) methods and ASTM (American Society for Testing and Materials) standard in rocks is sufficient or not, and to examine how the degree of saturation of rocks may be determined as a function of time. For this purpose, samples from five different rock groups including igneous (andesite, granite, andesitic tuff) and sedimentary (limestone, sandstone) exposed in Gümüşhane city which is from mountainous area of north-eastern Turkey, have been compiled. Measurements were taken on the samples left for saturation under laboratory conditions as a result of which the degree of saturation values at the end of these time periods were determined. Similarly, at the end of 48 hours, the samples were left to dry under atmospheric conditions in the laboratory environment and their time dependent degree of saturation were also calculated at different times. The changes as a function of time in the degree of saturation were then examined mathematically using non-linear, exponential and logarithmic functions. Graphs and equations related with the acquired time-degree of saturation values and the correlation coefficient (r) values for these equalities have indicated a high accordance between time and degree of saturation for the studied rock groups. The applied methodology will be beneficial for determining the degree of saturation based on time for engineering studies that will be carried out in similar lithologies.
Degree of saturation Porosity Time Correlation coefficient
This is a preview of subscription content, log in to check access.
Author would like to express his sincerest gratitude to the editor, reviewers, Dr. Ayberk Kaya and Dr. Selçuk Alemdağ for their excellent comments. Thanks are due to the Ideo Translation Office and Lect. Çağlayan Doğan for improving the language of the manuscript.
Alemdağ S, Gürocak Z (2011) The relationships between United Alteration Index (UAI) with physical, mechanical and chemical properties in the upper cretaseous basalts (Trabzon/Turkey). Fırat University Journal of Engineering Science 23(1): 1–10. (In Turkish).Google Scholar
Atıcı Ü, Yünsel TY (2011) Evaluation of the dynamic and static modulus of elasticity for dry and saturated samples in granitic rocks. Çukurova University Journal of the Faculty of Engineering and Architecture 26(1): 1–10.Google Scholar
Chen X, Schmıtt DR, Kessler JA, et al. (2015) Empirical relations between ultrasonic P–wawe velocity, porosity and uniaxial compressive strength. Cseg Recorder 40(5): 24–29.Google Scholar
Dağ S (2016) Comparison of the apparent porosity and porosity values on different rock types (Gümüşhane–Türkiye). In: Proceeding of International Conference on Engineering and Natural Sciences (ICENS), Sarajevo 3: 705–712.Google Scholar
Dağ S, Soysal Z (2017) The effect of anisotropy on some rock properties in sandstones. In: Proceeding of 2nd International Symposium on Multidisciplinary Studies, Rome, 109.Google Scholar
Karakul H, Ulusay R (2012) Prediction of strength properties of rocks at different saturation conditions from P–wave velocity and sensitivity of P–wave velocity to physical properties. Hacettepe Earthscience (In Turkish) 33(3): 239–268.Google Scholar
Pelin S (1977) Geological study of the area southeast of Alucra (Giresun), with special reference to its petroleum potential. Karadeniz Technical University Faculty of Earthscience Publications, Trabzon, 13, p.103. (In Turkish)Google Scholar
Saydam Ç (2002) Petrographic and organic geochemical properties of Late cretaseous sedimantery deposits in Eastern Pontides. PhD Thesis, Karadeniz Technical University Graduate School of Science, Trabzon, p. 203. (In Turkish)Google Scholar