Mechanical and acoustical properties of sandstones and shalesMECHANICAL AND ACOUSTICAL PROPERTIES OF. SANDSTONES AND SHALES. A DISSERTATION. SUBMITTED TO THE DEPARTMENT OF GEOPHYSICS. AND THE COMMITTEE ON GRADUATE STUDIES. OF STANFORD UNIVERSITY. IN PARTIAL FULFILLMENT OF THE REQUIREMENTS. FOR THE DEGREE OF.mechanical properties of sandstone,Investigations of strength properties of sandstone . - Emerald InsightThis research aim to assess the effect of absorption on the mechanical properties of sandstone rocks using a servo-controlled testing machine, stress-strain curves were obtained from which the uni-axial compressive strength, Young's modulus and the brittleness index were measured for specimens prepared from a single.
Jun 4, 2015 . 1 and for sandstones in Fig. 2. We expect C0 to decrease as porosity increases. At some transition porosity, rocks will lose all initial strength and become merely a loose aggregate. No matter which relationship is chosen, variables such as cementation, alteration, texture, and so on can cause significant.
Mechanical and acoustical properties of sandstones and shales
MECHANICAL AND ACOUSTICAL PROPERTIES OF. SANDSTONES AND SHALES. A DISSERTATION. SUBMITTED TO THE DEPARTMENT OF GEOPHYSICS. AND THE COMMITTEE ON GRADUATE STUDIES. OF STANFORD UNIVERSITY. IN PARTIAL FULFILLMENT OF THE REQUIREMENTS. FOR THE DEGREE OF.
Physical and mechanical properties of sandstone containing a .
In order to investigate the physical and mechanical properties of sandstone containing fissures after exposure to high temperatures, fissures with different angles α were prefabricated in the plate sandstone samples, and the processed samples were then heated at 5 different temperatures. Indoor uniaxial compression was.
Experimental study of mechanical properties of sandstone at high .
Mechanical properties of rock at high temperature are of importance for structure design and safety assessment in underground rock engineering. Brazilian disc test, axial compressive test and.
Investigations of strength properties of sandstone . - Emerald Insight
compressive strength is one of the most widely used for these properties and the purpose of this research was to study the variation in the compressive strength and the correlation of sandstone strength with other properties. Aqueous pore fluids exert significant. Investigations of strength properties of sandstone rock.
Experimental study on the mechanical properties of rocks at high .
The mechanical properties of marble, line, and sandstone as well as the stress-strain curve, the varying characteristics of the peak strength, the peak strain and elastic modulus were studied by using the MTS810 Rock Mechanics Servo-controlled Testing System under the action of temperatures rang-ing from room.
Investigation of Impact Compressive Mechanical Properties of .
Investigation of Impact Compressive Mechanical. Properties of Sandstone After as well as Under. High Temperature. Abstract: Conducting experimental studies on the impact compressive mechanical properties of rock under the high temperature environment is of both theoretical value and practical significance to.
Petrographic and engineering properties of sandstones from the .
The petrographic characteristics then were correlated with the physical and mechanical properties and the significance of the relationships assessed by Student's t value. The individual physical and mechanical properties also were the correlated with each other and the significance of the relationships similarly assessed.
Determination of Petrophysical and Mechanical Property . - NTNU
In this paper a simulated natural and homogeneous compacted sandstone rock with known mechanical and petrophysical properties was used. The mechanical properties include grain size, cementing material concentration, and compaction (confining) pressure. The effect of these properties on the petrophysical properties.
Characterisation of Sandstones: Mineralogy and Physical Properties
in colour, mineral composition, granulometric properties, pressure strength and / or weathering behaviour . On the other hand, mineralogical properties of sandstones could predict their mechanical properties such as the uniaxial compressive strength. The inherent parameters of sandstones can be characterised by their.
Effects of Pore Structures on Static Mechanical Properties of .
This paper presents a numerical and experimental investigation on the effects of pore structures on the static mechanical properties of porous sandstone. Three-dimensional (3D) numerical models of porous sandstone with different statistical pore parameters are constructed using a software program and the experimentally.
Mechanical Properties of Sandstone under Loading and Unloading .
The mechanical properties of rock mass under unloading conditions are essentially different from that under loading conditions. Triaxial compression tests and unloading confining pressure tests are conducted, and test results show that unloading failure is more brittle, and rock samples suffer more damage under unloading.
A modified true triaxial apparatus for measuring mechanical .
Sep 12, 2016 . . form a specific composition pressure; we comparatively investigated the mechanical behaviors of sandstone in the conditions of monophase fluids CO2/N2/H2O and biphase fluid CO2-H2O; and we analyzed the strength, elasticity modulus and brittleness of sandstones at different porous fluid conditions.
Ultrasonic method to evaluate the residual properties of thermally .
Feb 9, 2015 . Ultrasonic method to evaluate the residual properties of thermally damaged sandstone based on time–frequency analysis . 400, 600, 800 and 1000°C. Time–frequency analysis methods were applied to evaluate the deformation and strength properties of sandstone after being exposed to high temperature.
experimental study of the absorbtion effect on the strength properties .
Abstract: Purpose. The research aims to assess the effect of water absorption on the mechanical properties of sandstone rocks using a servo-controlled testing machine. This allowed investigating how the strength properties are affected by the changing content of absorbed water like this occurs on the site. Methodology.
TECHNICAL NOTE Experimental Study on Degradation of .
Mar 8, 2016 . An experimental investigation was carried out on the Hawkesbury sandstone to study changes in mechanical rock behavior (i.e., strength and deformability) during various cyclic loading conditions under uniaxial and triaxial testing situation. Axial load, confining pressures and axial and lateral deformations.
mechanical properties of sandstone,
Petrographic and Mechanical Properties of Sandstone from Murree .
Petrographic and Mechanical Properties of Sandstone from Murree Formation, Jena Kor Area, Peshawar Basin. A Case Study.
Effect of Drying-Wetting Cycles on Triaxial Compression Mechanical .
Effect of Drying-Wetting Cycles on Triaxial Compression Mechanical Properties of. Sandstone. Li Kegang 1*, Ma Lin 1, Li Xiangxing 1 and Peng Shoujian 2. 1Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China. 2School of Engineering, The University of.
mechanical properties of sandstone,
Strength Properties of Rocks and Rock Masses - University of .
14. Table 1. Typical values of uniaxial strength (in MPa) for nine common rock types (after. Johnson and Degraff, 1988). Rock. Tensile Strength. (MPa). Compressive Strength. (MPa). Line. Sandstone. Sandstone. Sandstone. Mudstone. Line. Line. Ironstone. Sandstone. 18.00 ± 0.62 (20). 19.17 ± 0.21 (23).
Mechanical Properties of Sandstones Exposed to High . - ProQuest
Mechanical Properties of Sandstones Exposed to High. Temperature. Hong Tian • Thomas Kempka • Shu Yu •. Martin Ziegler. Received: 17 October 2014 / Accepted: 22 February 2015 / Published online: 3 March 2015. Ó Springer-Verlag Wien 2015. Keywords High temperature 4 Mechanical properties 4. Sandstone 4.
The weakening effect of water on the brittle failure strength of .
The weakening effect of water on the brittle failure strength of sandstone. M. Duda and J. Renner. Institute for Geology, Mineralogy, and Geophysics, Ruhr-Universität Bochum, 44780 Bochum, Germany. E-mail: mandy.dudarub. Accepted 2012 November 27. Received 2012 November 21; in original form 2012 June 19.
Chapter 2: Principles of Drilling and Excavation - Boston University
184.108.40.206 Mechanical Properties Inferred from Penetrometer Data . ... with high strength are likely to have high modulus, low Poisson's ratio, and low porosity. .. 2.30 13.44* 7.10* 0.02* 110.3 2.76(R) Kaolinite and quartz, φ=1.7%. 11.93. 0.22. Shale+. Sandstone. Estancia Valley,. USA. 4.21. 0.39 69.3. Secant at 21 MPa.
mechanical properties of sandstone,
The Prediction of the Tensile Strength of Sandstones . - Geopersia
Abstract. This study investigates the correlations among the tensile strength, mineral composition, and textural features of twenty-nine sandstones from Kouzestan province. The regression analyses as well as artificial neural network (ANN) are also applied to evaluate the correlations. The results of simple regression.