### ucs rock strength granite rbn-natuursteenwerken

compressive strength (UCS) and to propose appropriate (Is 50) to (UCS) conversion factors for different Iraqi rocks The rock strength determined by (PLT) like the load frame strengths that they are estimate are an indication of intact rock strength and not necessarily of the

More### Prediction of uniaxial compressive strength of granitic

The linear regression analysis showed that the conversion factor between UCS and BPI c was obtained as 5.7 for the tested rocks, which is already higher than the proposed value of 5.1. A conversion factor equal to 7.4 was derived for relation between UCS and CPI.

More### USING THE POINT LOAD TEST TO DETERMINE THE UNIAXIAL

relationship between UCS and the point load strength could be expressed as: UCS = (K) Is50 = 24 Is50 (2) Where K is the "conversion factor." Subsequent studies found that K=24 was not as universal as had been hoped, and that instead there appeared to be a broad range of conversion factors. Table 1 summarizes published results obtained for

More### CORRELATION BETWEEN UNIAXIAL COMPRESSIVE STRENGTH

established correlation. Rock types investigated are granite collected from Tumpat, Kelantan and limestone from Pandan Indah, Kuala Lumpur. The samples of granite and limestone are in fresh state (grade 1). Literature review shows that the conversion factor, K for correlating between UCS and Is (50) lies between 16-29.

More### Predicting of uniaxial compressive strength of some

Jul 01, 2019· A conversion factor equal to 5.7 was established between UCS and BPI c. This value is higher than the advised conversion factor of 5.1. Nevertheless, the 5.1 conversion factor is proposed for general practice, and is not exclusively advised for igneous and metamorphic rocks.

More### Estimating Unconfined Compressive Strength of Sedimentary

and III). For each class a conversion factor was assigned to multiply with the point load strength index value in order to get the UCS value. The ASTM D -5731-08 presented a correlation between UCS and I s(50) which is dependent on a site specific conversion factor (C) to multiply with the point load strength index value in order to get the UCS

More### Correlation between Uniaxial Compressive Strength and

formula for the calculation of the UCS based on corrected Is to a specimen diameter of 50 mm Is(50). The index-to-strength conversion factor (k) relating UCS to Is(50) was reported to depend on the compressive to tensile strength ratio, the Poisson’s ratio, the length and the diameter of the rock specimen. Their theoretical prediction for k=14.9

More### (PDF) Correlations between uniaxial Compressive strength

The strength conversion factor (k) is the ratio between the uniaxial compressive strength (UCS) and the point load index (PLI). It has been used to estimate the UCS from the PLI since the 1960s.

More### Some Useful Numbers Jackson School of Geosciences

Granite 24 GPa Shale 1.6 GPa Limestone 24 GPa Chalk 3.2 GPa Sandstone 0.4 GPa Steel 80 GPa Wood 4 GPa Glass 19 GPa Lithostatic pressure gradient 26.46 MPa/km (for = 2.70) Hydrostatic pressure gradient 9.8 MPa/km Unconfined compressive strength Granite 100-250 MPa Basalt 100-300 MPa Quartzite 150-300 MPa Sandstone 20-170 MPa

More### STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1

Granite Basalt Gneiss Schist Quart-zite Marble Lime-stone Sand-stone Shale Av. Co Max. Co Min. Co Range No. of samples 181.7 324.0 48.8 275.2 26 214.1 358.6 104.8 253.8 16 174.4 251.0 84.5 166.5 24 57.8 165.6 8.0 157.6 17 288.8 359.0 214.9 144.1 7 120.5 227.6 62.0 165.5 9 120.9 373.0 35.3 337.7 51 90.1 235.2 10.0 225.2 46 103.0 231.0 34.3 196.7

More### Estimating Unconfined Compressive Strength of Sedimentary

and III). For each class a conversion factor was assigned to multiply with the point load strength index value in order to get the UCS value. The ASTM D -5731-08 presented a correlation between UCS and I s(50) which is dependent on a site specific conversion factor (C) to multiply with the point load strength index value in order to get the UCS

More### uniaxial compressive strength of granite

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.

More### The estimation of uniaxial compressive strength conversion

The point load (PL) test is generally used for estimation of uniaxial compressive strength (UCS) of rocks because of its economic advantages and simplicity in testing. If the PL index of a specimen is known, the UCS can be estimated using conversion factors. Several conversion factors have been proposed by various researchers and they are dependent upon the rock type.

More### CORRELATION BETWEEN UNIAXIAL COMPRESSIVE

established correlation. Rock types investigated are granite collected from Tumpat, Kelantan and limestone from Pandan Indah, Kuala Lumpur. The samples of granite and limestone are in fresh state (grade 1). Literature review shows that the conversion factor, K for correlating between UCS and Is (50) lies between 16-29.

More### PETROLOGICAL AND STRENGTH PROPERTIES OF GRANITE

between the strength parameters of granite. Results show that there is significant factor between tensile strength and UCS in a ratio of 1 to 10. Meanwhile, for point load index, I S(50) and UCS correlated, the correction factor is 15, within the range of correction factor determined by other researchers.

More### APPENDIX 1

Rock Type UCS Conversion Factor Norite 23 Feldspathic Pyroxenite 22 Pyroxenite 16 Parapyroxenite 28 Serpentinite 28 Granofels 26 Calc-silicate 25 These are site specific conversion factors calculated from the lab UCS tests for the major rock types (Hayes & Piper, 2003). These factors fall within the ISRM (1985) recommendations (Little, 2006).

More### Unconfined compressive strength of shale as a function of

Jun 01, 2011· The UCS of the rock samples can be reasonably estimated by multiplying the PLI value by a conversion factor that can range from as low as 8 to as high as 35 (Brown, 1981). Research from Appalachian Shale (West Virginia) by Vallejo et al. (1993) has indicated a conversion factor of 12 to estimate UCS.

More### STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1

Granite Basalt Gneiss Schist Quart-zite Marble Lime-stone Sand-stone Shale Av. Co Max. Co Min. Co Range No. of samples 181.7 324.0 48.8 275.2 26 214.1 358.6 104.8 253.8 16 174.4 251.0 84.5 166.5 24 57.8 165.6 8.0 157.6 17 288.8 359.0 214.9 144.1 7 120.5 227.6 62.0 165.5 9 120.9 373.0 35.3 337.7 51 90.1 235.2 10.0 225.2 46 103.0 231.0 34.3 196.7

More### ELEMENT TO OXIDE CONVERSION FACTORS

Right Solutions • Right Partner Geochemistry Technical Note alsglobal Reference Tables ELEMENT TO OXIDE CONVERSION FACTORS Element Oxide Factor Element Oxide Factor Al Al 20 3 1.889 Na Na 20 1.348 Ba BaS0 4 1.699 Nb Nb 20 5 1.431 Ca CaC0 3 2.497 P P 20 5 2.291 Ca Ca0 1.399 Si Si0 2 2.139 Cr Cr 20 3 1.462 Sn Sn0 2 1.270 F CaF 2 2.055 Sr Sr0 1.183 Fe Fe0 1.287 Ta

More### Calculating gravel tonnage, cubes, and sand and earth.

Copy the factor in the column titled "tons/yard" a four-decimal number (it cannot execute any math, it's just a web page). To do conversion: If you would like to download the Microsoft Excel .XLS spreadsheet, which does do the math/conversions of US Tons and Metric tonnes, into cubicv yards (yd³ or cubes) of gravel or steres (m³) of wet

More### Quarry Aggregates Conversions Cubic Metres To Tonnes

*A conversion factor of 1.78 tonnes per cubic metre shall be used where quarry aggregates weigh 1.4 tonnes per cubic Cubic Metres Cubic Metres. conversion of cubic meter of crushed granite to metric tonnes rock, quarry materials in aggregates, how many tonnes crushed rock Cubic meters to tons (water) conversion

More### Investigating the Effects of Mechanical Properties of

Sep 24, 2020· Broch and Franklin recommended an approximate conversion of UCS with a k-value of 24, whilst ISRM suggested a range of k values from 20 to 25. However, the conversion factor may only be suitable for the prediction of UCS (σ c) in hard rocks. For soft rock, the conversion factor could be less than 24 (Agustawijaya 2007).

More### The estimation of uniaxial compressive strength conversion

In the literature, conversion factors on different sedimentary, igneous and metamorphic rocks can be found, but no study exists on trona. In this study, laboratory UCS and field PL tests were carried out on trona and interbeds of volcano-sedimentary rocks. Based on these tests, PL to UCS conversion factors of trona and interbeds are proposed.

More### limestone to raw mill conversion factor

limestone to raw mill conversion factor . Second Hand Concrete Batching Plants For Sale In Malaysia. Market of Second Hand Concrete Batching Plants For Sale In MalaysiaDevelopment of Second Hand Concrete Batching Plants are to large-scale, automated,

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