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Determination of uniaxial compressive strength of

2013-11-1  The uniaxial compressive strength (UCS) of intact rock is an important mechanical parameter which is required for many engineering projects. In some engineering projects such as well drilling for petroleum production, due to the depth of the well, there are some limitations for obtaining rock core samples and determining the UCS.

Determination of the uniaxial compressive strengths

Cite this article. Kartashov, Y.M., Mazur-Dzhurilovskii, Y.D. & Grokhol'skii, A.A. Determination of the uniaxial compressive strengths of rocks.

Estimating uniaxial compressive strength of rocks

2013-8-1  1. Introduction. The determination of basic mechanical properties of rocks is crucial to a specific engineering project. Several mechanical properties, including uniaxial compressive strength (UCS), have become widely accepted parameters for rock design projects (Baskerville, 1987).From past to present, direct and indirect methods have been used to determine UCS of rocks in field and

The determination of uniaxial compressive strength

Request PDF The determination of uniaxial compressive strength from point load strength for pyroclastic rocks The point load test has often been reported as an indirect measure of compressive

The determination of uniaxial compressive strength

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.

(PDF) Determination of Uniaxial Compressive Strength

The uniaxial compressive strength, elastic modulus, point load strength, Schmidt hammer value, P-wave velocity, density and porosity values of the samples were determined in the laboratory.

The determination of uniaxial compressive strength

2014-2-20  Uniaxial compressive strength tests were conducted on trimmed core samples, which had a diameter of 38 mm and a length-to-diameter ratio of 2.0–2.5 . The tests were conducted on both oven-dried and saturated samples. The stress rate was applied within the limits of 0.5–1.0 MPa/s.

Suggested Methods for Determining the Uniaxial

2005-10-18  FOR DETERMINATION OF THE UNIAXIAL COMPRESSIVE STRENGTH OF ROCK MATERIALS 1. SCOPE This method of test is intended to measure the uni- axial compressive strength of a rock sample in the form of specimens of regular geometry. The test is mainly intended for strength classification and characterization of intact rock. 2.

Uniaxial Compressive Strength an overview

The uniaxial compressive strength of a rock under static loading often decreases with an increasing temperature at which the rock has been heat-treated before strength testing. This conclusion is drawn from a great number of experiments [1,2,4,8,9,11,17–19].The higher the temperature is, the lower the strength. Some results for uniaxial compressive strength σ c and tensile strength σ t

(PDF) Determination of c and Φ of rocks from indirect

2014-1-1  Determination of c and Φ of rocks from indirect tensile strength and uniaxial compression tests January 2014 International Journal of Geotechnical Engineering

(PDF) Determination of Uniaxial Compressive Strength

The uniaxial compressive strength, elastic modulus, point load strength, Schmidt hammer value, P-wave velocity, density and porosity values of the samples were determined in the laboratory.

The determination of uniaxial compressive strength

Request PDF The determination of uniaxial compressive strength from point load strength for pyroclastic rocks The point load test has often been reported as an indirect measure of compressive

Uniaxial compressive rock strength determination

2017-6-30  Uniaxial compressive rock strength determination Rebound hardness is perhaps the most frequently method used in rock testing to determine uniax-ial compressive strength (UCS). Proceq's RockSchmidt provides not only the possibility of obtain-ing the UCS, but also of sending the complete register data and report direct to the computer.

DETERMINATION OF UNIAXIAL COMPRESSIVE

The most used parameter in rock engineering practice is the Uniaxial Compressive Strength (UCS). It is often estimated on the field or trough Index-to-strength conversion factors proposed by various researchers for a specific rock type. The research presented in the paper involved field estimation of Uniaxial Compressive Strength using Schmidt rebound hammer and Point Load laboratory testing

The determination of uniaxial compressive strength

Abstract The point load test has often been reported as an indirect measure of compressive strength. It has been used widely in practice due to easy testing, the simplicity of specimen preparation, and possible field applications. Many researchers have investigated the relation between uniaxial compressive strength (UCS) and point load index (Is) for different rock types.

Determination of compressive strength of rocks using

2019-5-7  1. Central Mining And Fuel Research Institute Regional Centre, Nagpur, Google Scholar; 2. Ergul Yasar & Yasin Erdogan, Correlating sound velocity with the density, compressive strength and Young’s Modulus of Carbonate Rocks International Journal of Rock Mechanics and Mining Science –July (2004). Google Scholar Crossref; 3. P.B. Choudhary and T.G. Sitharam Ground Chracterization using

USING THE POINT LOAD TEST TO DETERMINE THE

2012-8-29  estimate uniaxial compressive strength, index-to-strength conversion factors are used. These factors have been proposed by various researchers and are dependent upon rock type. This study involved the extensive load frame and point load testing of coal measure rocks in

Uniaxial Compression Test USB

2019-3-9  Uniaxial Compressive Strength Standard index property (q u =σσσu = σσσσc) Analogous tests in concrete and soil (unconfined compression test). ASTM 4543. 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.

Rock mass properties Rocscience

2018-9-21  determine the uniaxial compressive strength V ci and the Hoek-Brown constant m i as described by Hoek and Brown (1980a). In this analysis, equation (5) is re-written in the form: (6) where ' x V 3 and ' 2 y (1 3) For n specimens the uniaxial compressive strength,the constant and the coefficient of determination 2 r are calculated from: n x x

Predicting Unconfined Compressive Strength of Intact

2021-6-2  UCS 12 .5 PLS Pyroclastic rocks [31] UCS 24.301 4.874 TS Basalt and limestone [32] 18 .251 0.0162 43 .214 2.56 1.384 127 .411 V p UCS n PLS Carbonate rocks [33] UCS 0.047 exp( 0.065 SD) Pyroclastic rocks [34] UCS Uniaxial compressive strength, n porosity, ρ density, SH Schmidt hardness, PLS point load strength, Vp Primary wave velocity, BPI

DETERMINATION OF UNIAXIAL COMPRESSIVE

The most used parameter in rock engineering practice is the Uniaxial Compressive Strength (UCS). It is often estimated on the field or trough Index-to-strength conversion factors proposed by various researchers for a specific rock type. The research presented in the paper involved field estimation of Uniaxial Compressive Strength using Schmidt rebound hammer and Point Load laboratory testing

The determination of uniaxial compressive strength

Abstract The point load test has often been reported as an indirect measure of compressive strength. It has been used widely in practice due to easy testing, the simplicity of specimen preparation, and possible field applications. Many researchers have investigated the relation between uniaxial compressive strength (UCS) and point load index (Is) for different rock types.

Estimating the uniaxial compressive strength of a volcanic

2010-7-7  Estimating the uniaxial compressive strength of a volcanic bimrock H. Sonmeza,, C Preparation of the standard sized cores from geological mixtures or fragmented rocks such as me´langes, fault rocks, coarse pyroclastic rocks, breccias and sheared serpentinites is often extremely difficult. Therefore, determination of the mechanical

Determination of compressive strength of rocks using

2019-5-7  1. Central Mining And Fuel Research Institute Regional Centre, Nagpur, Google Scholar; 2. Ergul Yasar & Yasin Erdogan, Correlating sound velocity with the density, compressive strength and Young’s Modulus of Carbonate Rocks International Journal of Rock Mechanics and Mining Science –July (2004). Google Scholar Crossref; 3. P.B. Choudhary and T.G. Sitharam Ground Chracterization using

Correlation between Uniaxial Compressive Strength and

2008-6-6  uniaxial compressive strength from the results of the point load test. 4. Test Results and Discussion 4.1 Uniaxial Compressive Strength Test Results The mean values of uniaxial compressive strength of the tested rocks are listed in Table 2. The strength values range from a low of 9.16 MPa for Marl to a high of 101.08 MPa for

A STUDY ON MODES OF ROCK FAILURE UNDER

2014-7-16  3.4 Determination of water content 18 3.5 Determination of porosity & density 19 3.6 Determination of slake durability index 21 3.7 Determination of tensile strength 22 3.8 Determination of hardness 24 3.9 Determination of unconfined compressive strength 24 3.10 Determination of compressive strength 25 3.11 X- Ray analysis 26

Predicting Unconfined Compressive Strength of Intact

2021-6-2  UCS 12 .5 PLS Pyroclastic rocks [31] UCS 24.301 4.874 TS Basalt and limestone [32] 18 .251 0.0162 43 .214 2.56 1.384 127 .411 V p UCS n PLS Carbonate rocks [33] UCS 0.047 exp( 0.065 SD) Pyroclastic rocks [34] UCS Uniaxial compressive strength, n porosity, ρ density, SH Schmidt hardness, PLS point load strength, Vp Primary wave velocity, BPI

Rock mass properties Rocscience

2018-9-21  determine the uniaxial compressive strength V ci and the Hoek-Brown constant m i as described by Hoek and Brown (1980a). In this analysis, equation (5) is re-written in the form: (6) where ' x V 3 and ' 2 y (1 3) For n specimens the uniaxial compressive strength,the constant and the coefficient of determination 2 r are calculated from: n x x

Estimating Unconfined Compressive Strength of

2014-5-16  [4] relating uniaxial compression and the point load tests on a variety of rocks. They found the following linear regression model to correlate the UCS and I s(50). qI u = +16.3 15.3 s(50) 3. The UCS Test There are three types of compressive strength tests of rocks as defined by Jaegar l. [5]; the first is the UCS et a

Rock mechanics SlideShare

2018-4-4  Under uniaxial load conditions the maximum stress that the rock sample can sustain referred as uniaxial compressive strength (σucs or σc) . The most useful description of the mechanical behavior of intact rock is the complete stress strain curve ofp the compressive strength test.