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Davood Fereidooni

Assistant Professor of Engineering Geology

  • TEL: +98-2335220091, Int. 234
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  • Biography

    Davood Fereidooni received his Ph.D. (2014) degree in Engineering Geology (Geological Engineering) from Bu-Ali Sina University, Hamedan, Iran, where he studied as a Ph.D. student from September 2009 to January 2014. He received his B.S. (2000) degree in Geology and M.S. (2004) in Engineering Geology, from Shahroud University of Technology and the Bu-Ali Sina University, respectively. He serves on School of Earth Sciences of Damghan University from 2014 to present as Assistant Professor of Engineering Geology. Through his research and consulting, Dr. Davood Fereidooni made seminal contributions in the areas of engineering geology and rock mechanics. He has innovated an apparatus and method for assessing durability of rocks, known as the “Durability Test Apparatus of Rock Subjected to Rainfall”. He is an author with a list of fundamental and advanced text books, including General and Engineering Geology (2009; 2014); Principle of Rock Slope Engineering (2015); and Engineering Geology for Geology Students (2017). He has also authored or co-authored more than 50 technical papers for journal and conference publications.

    Education

    • Ph.D. 2009-2014

      Engineering Geology

      Bu-Ali Sina University, Hamedan, Iran

    • M.Sc. 2000-2004

      Engineering Geology

      Bu-Ali Sina University, Hamedan, Iran

    • B.Sc. 1995-2000

      Geology

      Shahrood University of Technology, Shahrood, Iran

    Teaching

    • Engineering geology
    • Advanced Engineering geology
    • Rock Mechanics
    • Tunnel engineering
    • Road construction
    • Environmental Engineering
    • Karst Engineering Geology
    • Geologic Hazards
    • Soil mechanics
    • Subsurface geology
    • Surveying

    Selected Publications

    Khajevand, R., Fereidooni, D. Assessing the empirical correlations between engineering properties and P wave velocity of some sedimentary rock samples from Damghan, northern Iran (2018) Arabian Journal of Geosciences, 11 (18), art. no. 528, .

    DOI: 10.1007/s12517-018-3810-1

    In the present research, engineering properties of some sedimentary rock samples were measured to assess the correlations between P wave velocity and physical, index, and mechanical properties. The physical properties include dry and saturated unit weights, porosity, and water absorption. The index properties contain Schmidt rebound hardness and slake-durability index. The mechanical properties include uniaxial compressive strength, point load index, Brazilian tensile strength, and block punch strength. For this purpose, a comprehensive laboratory testing program was conducted after collecting 15 various sedimentary rock samples of four rock types from northwestern parts of Damghan, northern Iran. In the following, empirical equations were developed by using regression analyses between P wave velocity and the measured properties. The obtained results showed that all of the properties have strongly correlated to P wave velocity. Hereof, the relationships between P wave velocity and porosity and water absorption were inverse linear. But, P wave velocity has direct linear correlations with the other properties. Prepared contour maps indicated that P wave velocity is more affected by porosity of the rocks. The curves with the 45° line (y = x) were extracted for evaluating the validity degree of concluded empirical equations which approved approximately close relationships between P wave velocity and the measured properties. © 2018, Saudi Society for Geosciences.

    AUTHOR KEYWORDS: Empirical equation; Engineering properties; P wave velocity; Regression analysis; Rock sample
    INDEX KEYWORDS: absorption; assessment method; compressive strength; correlation; durability; empirical analysis; hardness; P-wave; porosity; regression analysis; sampling; sedimentary rock; tensile strength; uniaxial strength; wave velocity, Damghan; Iran; Semnan
    PUBLISHER: Springer Verlag

    Fereidooni, D., Khajevand, R. Determining the geotechnical characteristics of some sedimentary rocks from Iran with an emphasis on the correlations between physical, index, and mechanical properties (2018) Geotechnical Testing Journal, 41 (3), pp. 555-573.

    DOI: 10.1520/GTJ20170058

    Geotechnical characteristics were assessed to correlate physical, index, and mechanical properties of twelve sedimentary rock samples of four rock types collected from northern and northwestern parts of Damghan, northern Iran. Mineralogical and physical properties of the rocks were determined from prepared specimens in the laboratory after the field investigations. Also, the selected rock samples were subjected to index and mechanical tests including P-wave velocity, Schmidt rebound hardness, slake durability, point load, Brazilian, block punch, and uniaxial compressive strength. Mineralogical studies by thin section and X-Ray diffraction methods indicated that the selected rock samples with different textures are mainly composed of quartz and calcite. The studied rocks had low to high dry unit weight, low to medium porosity and low to very high P-wave velocity. The rocks were classified as durable and very durable based on the slake durability index. They were very strong to extremely strong in point load index, weak to moderate in block punch index, and weak to strong in uniaxial compressive strength. So they were classified in different strength categories. The obtained correlations between different rock properties from regression analyses indicated that specific gravity and unit weights are affected by mineral content while the other characteristics including water absorption, primary wave velocity, Schmidt rebound hardness, slake durability index, point load index, Brazilian tensile strength, and block punch strength are controlled by the porosity of the rocks. © 2018 by ASTM International.

    AUTHOR KEYWORDS: Correlation; Mechanical properties; Physical properties; Sedimentary rock; Strength
    INDEX KEYWORDS: Acoustic wave velocity; Calcite; Compressive strength; Correlation methods; Durability; Hardness; Mechanical properties; Physical properties; Porosity; Regression analysis; Sandwich structures; Sedimentology; Seismic waves; Tensile strength; Water absorption; Wave propagation, Brazilian tensile strengths; Geotechnical characteristics; Primary wave velocity; Schmidt rebound hardness; Slake durability indices; Strength; Uniaxial compressive strength; X-ray diffraction method, Sedimentary rocks, compressive strength; correlation; geotechnical property; hardness; mechanical property; P-wave; physical property; sedimentary rock; shear strength; slaking; uniaxial strength, Damghan; Iran; Semnan
    PUBLISHER: ASTM International

    Fereidooni, D., Khajevand, R. Utilization of the accelerated weathering test method for evaluating the durability of sedimentary rocks (2018) Bulletin of Engineering Geology and the Environment, pp. 1-20. Article in Press.

    DOI: 10.1007/s10064-018-1267-9

    The durability and geotechnical properties of 12 sedimentary rock samples collected from the Damghan area, Iran, were investigated. The rocks were subjected to mineralogical, physical, index and mechanical laboratory tests. Ten-cycle slake-durability tests were performed on the rocks using natural water and sulfuric acid solutions. The results of the mineralogical and X-ray diffraction studies indicated a change in the amount of soluble minerals after the slake-durability test in acidic solutions. A new test method, namely the accelerated weathering test (AWT), was conducted using a new apparatus designed and made for this purpose using natural and sulfuric acid solutions in ten wetting–drying cycles. Changes in the physical and index properties were observed in all tested samples after the fifth and tenth cycles of the test. A linear decrease in the values of the mechanical properties with decreasing pH of the solution and decreasing specimen size were observed in all samples under the test conditions. We present four new classification systems by which to classify the rocks after the AWT. Based on these results, the AWT can be used as a supplementary or even suitable independent test for evaluating the durability of rocks. © 2018 Springer-Verlag GmbH Germany, part of Springer Nature

    AUTHOR KEYWORDS: Accelerated weathering test; Durability; Mechanical properties; Physical properties; Sedimentary rock
    INDEX KEYWORDS: Mechanical properties; Physical properties; Sedimentary rocks; Sedimentology; Sulfuric acid; Weathering; X ray diffraction, Accelerated weathering tests; Acidic solutions; Classification system; Geotechnical properties; Index properties; Slake durability; Sulfuric acid solution; X-ray diffraction studies, Durability
    PUBLISHER: Springer Verlag

    Fereidooni, D., Khajevand, R. Correlations Between Slake-Durability Index and Engineering Properties of Some Travertine Samples Under Wetting–Drying Cycles (2018) Geotechnical and Geological Engineering, 36 (2), pp. 1071-1089.

    DOI: 10.1007/s10706-017-0376-8

    Six travertine rock samples have been collected from different parts of Cheshmeh-Hafez quarry in northwest of Damghan, northern Iran. Physical and mechanical properties of the samples mean dry and saturated unit weights, specific gravity, porosity, water absorption, ultrasonic P wave velocity, Schmidt rebound hardness, point load index, Brazilian tensile strength, block punch index and uniaxial compressive strength have been determined according to the ISRM (in: Ulusay, Hudson (eds) Suggested methods prepared by the commission on testing methods, International Society for Rock Mechanics (ISRM), Kozan Offset, Ankara, 2007) standard in the laboratory. Also, slake-durability test was carried out up to ten cycles in different solutions. The used solutions were natural water with pH 7 of the region and sulfuric acidic solutions with pH of 5.5 and 4. Then empirical relationships by regression analyses were undertaken between the slake-durability indexes of all cycles of the test and measured physical and mechanical properties of the tested travertines. Regression analyses indicated that the relationships with correlation coefficients (R2) from 0.55 to 0.98 exist between slake-durability index and engineering properties of the rocks. The best and poor correlations were obtained between slake-durability index and specific gravity and block punch index, respectively. Results shown that in the first four wetting–drying cycles, the correlation coefficients between slake-durability index and physical properties of the rocks are rapidly increased, whiles the increasing rate of the correlation coefficients between slake-durability index and mechanical properties of the rocks is maximum in the first three cycles. Therefore, the first and second cycles of slake-durability test can’t able to present actual durability of the rocks. © 2017, Springer International Publishing AG.

    AUTHOR KEYWORDS: Correlation; Mechanical properties; Physical properties; Slake-durability; Travertine
    INDEX KEYWORDS: Compressive strength; Correlation methods; Degrees of freedom (mechanics); Density (specific gravity); Limestone; Load testing; Mechanical properties; Physical properties; Regression analysis; Rock mechanics; Rocks; Seismic waves; Tensile strength; Tensile testing; Water absorption; Wave propagation; Wetting, Brazilian tensile strengths; Physical and mechanical properties; Schmidt rebound hardness; Slake durability; Slake durability indices; Travertine; Ultrasonic P-wave velocity; Uniaxial compressive strength, Durability
    PUBLISHER: Springer International Publishing

    Fereidooni, D. Assessing the effects of mineral content and porosity on ultrasonic wave velocity (2018) Geomechanics and Engineering, 14 (4), pp. 399-406.

    DOI: 10.12989/gae.2018.14.4.399

    The influences of mineral content and porosity on ultrasonic wave velocity were assessed for ten hornfelsic rocks collected from southern and western parts of the city of Hamedan, western Iran. Selected rock samples were subjected to mineralogical, physical, and index laboratory tests. The tested rocks contain quartz, feldspar, biotite, muscovite, garnet, sillimanite, kyanite, staurolite, graphite and other fine grained cryptocrystalline matrix materials. The values of dry unit weight of the rocks were high, but the values of porosity and water absorption were low. In the rocks, the values of dry unit weight are related to the presence of dense minerals such as garnet so not affected by porosity. The statistical relationships between mineral content, porosity and ultrasonic wave velocity indicated that the porosity is the most important factor influencing ultrasonic wave velocity of the studied rocks. The values of P-wave velocity of the rocks range from moderate to very high. Empirical equations, relevant to different parameters of the rocks, were proposed to determine the rocks’ essential characteristics such as primary and secondary wave velocities. Quality indexes (IQ) of the studied samples were determined based on P-wave velocities of them and their composing minerals and the samples were classified as non-fissured to moderately fissured rocks. Also, all tested samples are classified as slightly fissured rocks according to the ratio of S-wave to P-wave velocities. © 2018 Techno-Press, Ltd.

    AUTHOR KEYWORDS: Fissure; Hornfels; Mineral; Porosity; Wave velocity
    INDEX KEYWORDS: Acoustic wave velocity; Feldspar; Garnets; Mica; Minerals; Porosity; Seismic waves; Shear waves; Silicate minerals; Ultrasonic waves; Water absorption; Wave propagation, Cryptocrystalline matrix; Essential characteristic; Fissure; Hornfels; Secondary wave velocity; Statistical relationship; Ultrasonic wave velocity; Wave velocity, Rocks
    PUBLISHER: Techno Press

    Fereidooni, D. Influence of discontinuities and clay minerals in their filling materials on the instability of rock slopes (2018) Geomechanics and Geoengineering, 13 (1), pp. 11-21.

    DOI: 10.1080/17486025.2017.1309080

    To assess the influence of discontinuities and clay minerals in their filling materials on the instability of rock slopes, seven rock slopes along the margin of Ganjnameh–Shahrestaneh Road, Hamedan Province, Western Iran were selected, and the physical and mechanical properties of their rocks and discontinuities were determined. By statistical studies of the discontinuities, rock slope stability analysis has been performed using kinematic and limit equilibrium methods so that safety factors for the rock slopes can be calculated. Also, sampling of filling materials and X-ray diffraction tests have been done to identify the clay minerals in the filling materials. The lithologies of the studied rock slopes are granite, diorite and hornfels. The presence of discontinuities and weakness planes with different orientations and clay minerals in filling materials of discontinuities are effective factors that cause plane, wedge and toppling failures in the rock slopes. Clay minerals as filling materials of discontinuities in the studied rock slope facilitate their instability by two different methods. First, absorption of water by infilling clay minerals causes the friction angle of discontinuity surfaces that leads to plane and wedge failures to be reduced. Second, water absorption causes the swelling of clay infilling minerals that leads to toppling failure. © 2017 Informa UK Limited, trading as Taylor & Francis Group.

    AUTHOR KEYWORDS: clay mineral; discontinuity; plane failure; Rock slope; wedge failure
    INDEX KEYWORDS: clay mineral; discontinuity; slope dynamics; slope failure; slope stability, Hamadan; Iran
    PUBLISHER: Taylor and Francis Ltd.

    Fereidooni, D. Determination of the Geotechnical Characteristics of Hornfelsic Rocks with a Particular Emphasis on the Correlation Between Physical and Mechanical Properties (2016) Rock Mechanics and Rock Engineering, 49 (7), pp. 2595-2608.

    DOI: 10.1007/s00603-016-0930-3

    Geotechnical characteristics and relationships between various physical and mechanical properties were assessed for eight types of hornfelsic rock collected from southern and southwestern parts of the city of Hamedan in western Iran. Rock samples were subjected to mineralogical, physical, index, and mechanical laboratory tests and found to contain quartz, feldspar, biotite, muscovite, garnet, sillimanite, kyanite, staurolite, graphite, and other fine-grained cryptocrystalline matrix materials. Samples had a porphyroblastic texture, and the mineral contents and physical properties influenced various rock characteristics. Some rock characteristics were affected by mineral content, while others were affected by porosity. Dry unit weight, primary and secondary wave velocities, and slake-durability index were noteworthy characteristics affected by mineral content, while porosity had the greatest influence on water absorption, Schmidt hardness, point load index, Brazilian tensile strength, and uniaxial compressive strength. Empirical equations describing the relationships between different rock parameters are proposed for determining the essential characteristics of rock, such as secondary wave velocity, slake-durability index, point load index, Brazilian tensile strength, and uniaxial compressive strength. On the basis of these properties, the studied rocks were classified as being strong or very strong. © 2016, Springer-Verlag Wien.

    AUTHOR KEYWORDS: Correlation; Durability; Hornfels; Mechanical properties; Physical properties; Strength
    INDEX KEYWORDS: Compressive strength; Correlation methods; Durability; Mechanical properties; Mica; Physical properties; Porosity; Rocks; Sandwich structures; Shear waves; Silicate minerals; Tensile strength; Water absorption; Wave propagation, Brazilian tensile strengths; Essential characteristic; Geotechnical characteristics; Hornfels; Physical and mechanical properties; Slake durability indices; Strength; Uniaxial compressive strength, Minerals, compressive strength; correlation; felsic rock; mechanical property; physical property; porosity; porphyroblast; rock mechanics; tensile strength; uniaxial strength; wave velocity, Brazil; Hamadan; Iran
    PUBLISHER: Springer-Verlag Wien

    Fereidooni, D., Khanlari, G.R., Heidari, M., Sepahigero, A.A., Kolahi-Azar, A.P. Assessment of inherent anisotropy and confining pressure influences on mechanical behavior of anisotropic foliated rocks under triaxial compression (2016) Rock Mechanics and Rock Engineering, 49 (6), pp. 2155-2163.

    DOI: 10.1007/s00603-015-0814-y
    AUTHOR KEYWORDS: Anisotropy; Confining pressure; Elasticity modulus; Metamorphic rocks; Triaxial compressive strength
    PUBLISHER: Springer-Verlag Wien

    Fereidooni, D., Khanlari, G.R., Heidari, M. Assessment of a modified rock mass classification system for rock slope stability analysis in the Q-system [Evaluación del sistema Q modificado de clasificación del macizo rocoso para el análisis de estabilidad de pendiente de roca] (2015) Earth Sciences Research Journal, 19 (2), pp. 147-152.

    DOI: 10.15446/esrj.v19n2.49127

    This paper explores the applicability of a modified Q classification system and its component parameters for analysis and conclusion of site investigation data to estimate rock slope stability. Based on the literature, Q classification system has high applicable potential for evaluation of rock mass quality. Therefore, in this study, it was used with RMR and SMR rock mass classification systems to assess stability or instability of different rock slopes along the Hamedan-Ganjnameh-Tuyserkan road, Hamedan province west of Iran. Furthermore, a modified rock mass classification system namely Slope Quality Rating (SQR) was proposed based on the correction of the Q classification parameters and calculating some new parameters such as dip and strike of discontinuities and the method of rock excavation or blasting. For this purpose, the SMR and RMR rock mass classifications were also needed. By measuring SQR for different rock slopes, it will be possible to measure Slope Mass Rating (SMR). © 2015, Universidad Nacional de Colombia. All rights reserved.

    AUTHOR KEYWORDS: Q; RMR; Rock mass classification; Rock slope; SMR; SQR
    INDEX KEYWORDS: Q system; rock mass classification; rock mechanics; slope stability; stability analysis, Hamadan; Iran
    PUBLISHER: Universidad Nacional de Colombia

    Fereidooni, D. Seismic hazard assessment of the city of Khoy and its vicinity, NW of Iran (2015) International Journal of Geotechnical Earthquake Engineering, 6 (1), pp. 15-27.

    DOI: 10.4018/IJGEE.2015010102

    Analyses have been carried out considering the occurred earthquakes, geologic and seismotectonic conditions of the region covering a radius of 100 Km keeping Khoy as the center. The major seismic sources are small and large faults identified in the study area mostly directed in NW-SE. The MCE and PGA were measured based on both DSHA and PSHA approaches. The results of DSHA show that the MCE and PGA evaluated values are 6.8 Richter and 0.31g, which might be created by Chahar-Sotoon and Askar-Abad faults, respectively. The results of PSHA show that the MCE evaluated value is 6.1 Richter for a 0.64 probability in a 50- year period. Seismic hazard parameters have been evaluated considering the available earthquake data using Gutenberg-Richter relationship method. The 'a' and 'b' parameters were estimated 6.03 and 0.94, respectively. For earthquakes with magnitudes equal or greater than 6.1 Richter, the values of returning period (TR) and annual occurrence probability (PT) were obtained 112 and 0.009, respectively. The results obtained from two mentioned methods are matched to each other. Copyright © 2015, IGI Global.

    AUTHOR KEYWORDS: DSHA; Earthquake; Fault; Khoy; PSHA
    PUBLISHER: IGI Global

    Fereidooni, D., Khanlari, G.R., Heidari, M., Sepahigero, A.A. Assessment of engineering behavior of foliated rocks using some index tests (2015) Proceedings of the 24th International Mining Congress of Turkey, IMCET 2015, pp. 617-629.

    In this research, different experimental techniques have been used to determine the strength of five types of anisotropic foliated rocks, selected from the Hamedan Province, west of Iran. For this purpose, after sample preparation and assessment of mineralogical and physical properties, selected samples were subjected to Cylindrical Punch, Point Load and Brazilian tests and their strengths were evaluated with respect to different angles between anisotropy planes and the major loading directions. Data analyses show that the types and amounts of minerals have an influence on the physical and mechanical properties of the tested anisotropic rocks. Porosity and water absorption also have a dominant control on the mechanical indices such as cylindrical punch index (CPI), point load index (Is(50)) and Brazilian tensile strength (BTS). On the basis of the test result, two empirical equations are proposed for calculating CPI and Is(50). Other empirical equations relating studied indices are also presented.

    AUTHOR KEYWORDS: Anisotropy; Brazilian test; Metamorphic rocks; Point load test; Punch test
    INDEX KEYWORDS: Anisotropy; Rocks; Tensile strength; Water absorption, Brazilian tensile strengths; Brazilian test; Cylindrical punches; Empirical equations; Experimental techniques; Physical and mechanical properties; Point load tests; Punch tests, Metamorphic rocks
    PUBLISHER: TMMOB Maden Muhendisleri Odasi

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