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- Measurement Uncertainty in Testing of Uniaxial Compressive ...

Measurement Uncertainty in Testing of Uniaxial Compressive Strength and Deformability of Rock Samples. This paper describes instrumental measurement uncertainties and their influence on the result obtained from determination of rock sample uniaxial compressive strength and deformability.

- Compressive strength and tensile strength of rocks at sub ...

of rocks, the knowledge of strength properties (compressive, tensile and shear strength) are more important for safe design of rock structures. Therefore, the present investigation is carried out to determine the uniaxial compressive strength and tensile strength of Chunar sandstone and Makrana marble at sub-zero temperatures and to observe

- Uniaxial Tension and Compression Testing of Materials - MIT

Uniaxial Tension and Compression Testing of Materials Nikita Khlystov ... to investigate material mechanics and gain experience in uniaxial testing, we performed compressive and tensile tests on alloys, pure metals, and ceramics, and calculated their Young's modulus, yield stress, ultimate tensile strength, and elastic strain energy density ...

- Uniaxial compression tests - SP

This and many other reports on unixial compression tests, conducted at SP, are published on SKB. Examples of standards. ISRM 1979, Suggested methods for determining the uniaxial compressive strength and deformability of rock materials. Int J Rock Mech Min Sci Geomech Abs 16(2), sid 135-140.

[PDF]- The determination of uniaxial compressive ... - ScienceDirect

The uniaxial compressive strength–point load index relation was studied for pyroclastic rocks. • Very strong exponential relations were found uniaxial compressive strength and point load index. • The results were compared to the studies in the literature.

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- Uniaxial compression tests - SP

ISRM 1979, Suggested methods for determining the uniaxial compressive strength and deformability of rock materials. Int J Rock Mech Min Sci Geomech Abs 16(2), sid 135-140. ISRM 1999, Draft ISRM suggested method for the complete stress-strain curve for intact rock in uniaxial compression. Int J Rock Mech Min Sci 36(3), sid 279-289.

[PDF]- Bearing Capacity of Rocks - IITK

In case of rock mass with favorable discontinuities, the net allowable bearing pressure may be estimated from: q a = q c * N j Where qWhere q c = average uniaxial compressive strength of rock coresaverage uniaxial compressive strength of rock cores N j = empirical coefficient depending on the spacing of the discontinuities 3+S/B 10 []1+300(δ/S) δ= thickness of discontinuity= thickness of ...

[PDF]- Correlation between Uniaxial Compressive Strength and ...

indirect measure of the compressive or tensile strength of the rock. D'Andrea et al.[4] performed uniaxial compression and the point load tests on a variety of rocks. They found the following linear regression model to correlate the UCS and Is(50). qu = 16.3 + 15.3 Is(50) where qu = Uniaxial Compressive Strength of rock.

[PDF]- Unconfined Compressive Strength Test of Rock

This test method specifies the apparatus, instrumentation, and procedures for determining unconfined compressive strength of intact rock core specimens. This procedure is identical to ASTM D 2938 except that the cores are tested after cutting without grinding, and neoprene caps are used on the specimen ends. Unconfined Compressive Strength Test Procedure Check the ability of the .

- A new testing method for indirect determination ... - DeepDyve

Dec 01, 2009 · Read "A new testing method for indirect determination of the unconfined compressive strength of rocks, International Journal of Rock Mechanics and Mining Sciences" on DeepDyve, the largest online rental service for scholarly research with thousands of .

- Electrical resistivity measurement to predict uniaxial ...

logarithmic relation between resistivity and uniaxial compres-sive rock strength. The compressive strength increases with increasing resistivity. Bilim et al (2002) carried out electrical measurements on artificial rocks and found that compressive strength, tensile strength, point load strength and density strongly correlated with voltage drop.

- UNCONFINED COMPRESSIVE STRENGTH OF ROCK SAMPLE (IS .

Aug 11, 2013 · Reference IS-9143-1979-Method for the determination of unconfined compressive strength of rock materials Objective The objective of this test is to determine unconfined compressive strength of rock. This test is primarily done to classify the rock on the basis of strength. Apparatus used Name of equipment Capacity Least count/Accuracy Loading Machine 5000 kN 2.5 N Vernier [.]

- Correlation of Sonic Travel Time to the Uniaxial ...

Correlation of Sonic Travel Time to the Uniaxial Compressive Strength of U.S. Coal Measure Rocks David C. Oyler, Research Engineer Christopher Mark, Principal Research Engineer Gregory M. Molinda, Lead Research Scientist NIOSH-Pittsburgh Research Laboratory . Pittsburgh, PA. ABSTRACT . Sonic travel time logging of exploration boreholes is routinely

- Determination of critical saturation degree in rocks based ...

Aug 13, 2018 · Determination of critical saturation degree in rocks based on maximum loss of uniaxial compression strength and deformation modulus ... The impact of water content and ionic diffusion on the uniaxial compressive strength of shale. Egypt J Pet 22(2):249–260. ... Influence of water content and anisotropy on the strength and deformability of low ...

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- A predictive model for uniaxial compressive strength of ...

A predictive model for uniaxial compressive strength of carbonate rocks from Schmidt hardness Abstract Uniaxial compressive strength (UCS) is considered to be one of the important parameters in rock engineering projects. In order to determine UCS, direct and indirect techniques are .

- Course CEE9577 - Faculty of Engineering

• The engineering classification of intact rocks is based of strength and/or deformation ppproperties of the rock. ... mechanical and hydraulic properties of the rocks. However, determination of the index properties could not replace detailed ... of the uniaxial tensile and compressive strength of .

- CLASSIFICATION // CHARACTERIZATION OF SOME ROCK .

Point load strength Is = 1 - 2 2 - 4 4 - 10 > 10 It should be noted that the boundary between rock and soil is defined in terms of the uniaxial compressive strength and not i n terms of weathering. A material with the strength ≤ 1 MPa is considered as a rock.

[PDF]- Rock strength from log parameters - PetroWiki

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 available, so there is a desire to use data available from well logs that are ...

- Point-load strength: An index for classification of rock ...

Abstract. Point-load strength (Is) as a measure for the determination of rock strength and for estimating uniaxial (unconfined) compressive strength (UCS) are described and both put together and used for rock strength classification of brittle and hard rocks. The estimated point-load strength values of specimens of varying sizes and also...

[PDF]- Unconfined Compressive Strength Test of Rock

This test method specifies the apparatus, instrumentation, and procedures for determining unconfined compressive strength of intact rock core specimens. This procedure is identical to ASTM D 2938 except that the cores are tested after cutting without grinding, and neoprene caps are used on the specimen ends. Unconfined Compressive Strength Test Procedure Check the ability of the spherical seat ...

- A predictive model for uniaxial compressive strength of ...

A predictive model for uniaxial compressive strength of carbonate rocks from Schmidt hardness Abstract Uniaxial compressive strength (UCS) is considered to be one of the important parameters in rock engineering projects. In order to determine UCS, direct and .