determination uniaxial compressive strength of rocks

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8 STRENGTH OF SOILS AND ROCKS

strength is the most commonly measured strength parameter and this is also true of rock specimens For the uniaxial or unconfined compressive strength test a right circular cylinder of the material is compressed between the platens of a testing machine as illustrated in Fig 81 The compressive strength is then defined as the maximum load ....

Development of a New Method for Estimating ,

Uniaxial compressive strength as one the mechanical properties of rock has various applications in rock engineering This parameter can be determined directly either in laboratory tests or estimated indirectly using a cheap and conventional method such as Schmidt hammer rebound test and unit weight Schmidt hammer rebound, unit weight, porosity and uniaxial compressive strength were determined ....

Laboratory Tests on Rock

2) Uniaxial Compressive Strength without Static Moduli (ASTM D7012) 3) Uniaxial Compressive Strength with Static Moduli (ASTM D7012) 4a) Triaxial Test on Core Specimens Without Pore Pressure Measurements (ASTM D 7012) in Hoek cells (very hard rock and medium-high confinement) or in rapid triaxial cell (medium hard rocks and medium confinement)...

IS 9143: Method for the determination ,

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Rock mass properties

** Point load tests on rocks with a uniaxial compressive strength below 25 MPa are likely to yield highly ambiguous results Table 3: Values of the constant m i for intact rock, by rock group Note that values in parenthesis are estimat Rock mass properties 7 Rock mass properties 8 Anisotropic and foliated rocks such as slates, schists and phyllites, the behaviour of which is dominated by ....

Rock strength from log parameters

Rock strength from log parameters PetroWiki Jump to: navigation, search An understanding of rock strength is important for designing recovery plans for a reservoir and for developing an appropriate reservoir simulation A detailed discussion of rock failure can be found in Rock failure relationships and Compressive strength of rocks But the data needed for these methods may not be readily ....

Estimating thestrength ofrock materials

1121952 rock sample Uniaxial compressive strength 72 2277 6597 2,89 Uniaxial tensile strength 12 249 316 1,27 Triaxial strength 13 261t 964 3,69 Modulus ofelasticityt 54 607 3072 5,06 Poisson's ratio:j: 53 565 2882 5,10 I TOTAL (first three I properties) 97 2787 7877 2,83 TABLE II SUMMARY OFTHE CSIR ROCK TESTING SERVICES TOTHE MINING INDUSTRY DURING PAST 20YEARS NOTES: ,...

Uniaxial Compressive Strength

Uniaxial compressive strength (UCS) is a key physical test relevant to iron ore crusher design and rock geomechanics for mining Tests are typically performed on intact lengths of NQ, HQ, or PQ diamond drill core and record the maximum axial load sustained at the point of failure...

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