astm unconfined compressive strength of rock wiki in bhutan

ASTM D2938952002 Standard Test Method for Unconfined Compressive Strength of Intact Rock Core Specimens Withdrawn 2005 ASTM International West Conshohocken PA 1995

ASTM Publication Date 1 July 2016 Status active Page Count 7 ICS Code Earthworks Excavations Foundation construction Underground works 93020 scope This test method covers the determination of the unconfined compressive strength of cohesive soil in the intact remolded or reconstituted condition using straincontrolled

D653 Terminology Relating to Soil Rock and Contained Fluids D854 Test Methods for Specific Gravity of Soil Solids by Water Pycnometer D1587 Practice for ThinWalled Tube Sampling of Soils for Geotechnical Purposes D2166D2166M Test Method for Unconfined Compressive Strength of

References ISRM Rock Characterization Testing and Monitoring ISRM Suggested Methods Editor ET Brown Pergamon press 1981 ASTM 1985 Annual Book of ASTM Standards Volume 0408 Soil and Rock Building Stones Published by ASTM in 1986 BS 812 Published by British Standards Institution Geotechnical Laboratory DGM Thimphu Bhutan 2

The uniaxial compressive strength of a rock under static loading often decreases with an increasing temperature at which the rock has been heattreated before strength testing This conclusion is drawn from a great number of experiments 124891117–19The higher the temperature is the lower the strength Some results for uniaxial compressive strength σ c and tensile strength σ t

It has been established that rock fails in compression by shearing along a ‘failure’ plane oriented at an angle θ with respect to σ 1 that is specific for a particular rock • The MC linear strength criterion implies that θ stays the same regardless of the confining pressure applied Rock

AJ Hooper in Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste 2010 541 Mechanical properties The strength properties such as uniaxial compressive strength and tensile strength of the intact rock not intersected by fractures can be determined by a suite of wellknown laboratory tests on drillcore samples

between strain hardening and softening is called the unconfined compressive strength of the rock and is denoted as Co or qu Failure takes place continuously from C to D during which testing procedure is described in ASTM D 293684 and in Bieniawski and Hawkes 1978 24 Indirect Tension Tests CVEN 5768 Lecture Notes 8 Page 5

Peabody established an in house rock mechanics testing facility in the fall of 1986 This facility is located in Freeburg IL A full range of equipment was purchased to perform tests including uniaxial compressive strength indirect tensile strength point load index triaxial compressive strength flexural

D653 Terminology Relating to Soil Rock and Contained Fluids D854 Test Methods for Specific Gravity of Soil Solids by Water Pycnometer D1587 Practice for ThinWalled Tube Sampling of Soils for Geotechnical Purposes D2166D2166M Test Method for Unconfined Compressive Strength of

ASTM D 2166 Standard Test Method for Unconfined Compressive Strength of Cohesive Soil Significance For soils the undrained shear strength su is necessary for the determination of the bearing capacity of foundations dams etc The undrained shear strength su of clays is commonly determined from an unconfined compression test

The uniaxial compressive strength of a rock under static loading often decreases with an increasing temperature at which the rock has been heattreated before strength testing This conclusion is drawn from a great number of experiments 124891117–19The higher the temperature is the lower the strength Some results for uniaxial compressive strength σ c and tensile strength σ t

S131 KIT UNCONFINED COMPRESSION TESTER ASTM D2166 AASHTO T208 BS 13777 This handoperated tester utilized both on site and in laboratory applies the load by a handwheel and strength is read on a proving ring 200 Kg capacity The apparatus can

RockMass Classification for Railway Tunnels by Railway Technical Research Institute Rockmasses are classified based on the values of P wave velocity unconfined compressive strength and unit weight Support patterns for tunnels such as shotcreting and rock bolting is recommended depending upon the rockmass classification obtained

time and cost of compressive strength tests 52 The point load strength test is used as an index test for strength classification of rock materials The test results should not be used for design or analytical purposes 53 This test method is performed to determine the point load strength index Is50 of rock specimens and the point

It has been established that rock fails in compression by shearing along a ‘failure’ plane oriented at an angle θ with respect to σ 1 that is specific for a particular rock • The MC linear strength criterion implies that θ stays the same regardless of the confining pressure applied Rock

AJ Hooper in Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste 2010 541 Mechanical properties The strength properties such as uniaxial compressive strength and tensile strength of the intact rock not intersected by fractures can be determined by a suite of wellknown laboratory tests on drillcore samples

The Point Load Test also known as the Point Load Strength Index Test is used to calculate the rock strength index of a rock specimen From the rock strength index other rock parameters such as the uniaxial compressive strength can be test is very economical due to the simplicity of the apparatus and the minimal amount of required materials to execute

The uniaxial compressive strength of the rock constitutes the highest strength limit of the actual rock mass ISRM 1981 has defined the uniaxial strength of a rock to samples of 50 mm diameter A rock is however a fabric of minerals and grains bound or welded together The rock therefore includes microscopic cracks and fissures

References ISRM Rock Characterization Testing and Monitoring ISRM Suggested Methods Editor ET Brown Pergamon press 1981 ASTM 1985 Annual Book of ASTM Standards Volume 0408 Soil and Rock Building Stones Published by ASTM in 1986 BS 812 Published by British Standards Institution Geotechnical Laboratory DGM Thimphu Bhutan 2

Norm Lambert the author of this page is a voting member of ASTM Technical Subcommittee C0925 that sets the ASTM C881 standard Compressive Strength of Epoxy This strength is the ability of the material to handle weight Compressive strength tests are ran by pushing both sides of a cylinder of the epoxy or concrete etc on the top and bottom

Peabody established an in house rock mechanics testing facility in the fall of 1986 This facility is located in Freeburg IL A full range of equipment was purchased to perform tests including uniaxial compressive strength indirect tensile strength point load index triaxial compressive strength flexural

CHAPTER 6 Engineering Properties of Soil and Rock NYSDOT Geotechnical Page 66 June 17 2013 Design Manual 61 OVERVIEW The purpose of this chapter is to identify either by reference or explicitly herein appropriate