Crushing & Grinding Machines

PDF Correlation between uniaxial strength and point load

Correlation between UCS and PLI for shale specimens Fig 2 Correlation between UCS and PLI for marlstone specimens 6 CONCLUDING REMARK S 34 U CT and 34 PL T ar e c onducted on...

Study of Correlation on Unconfined Compressive Strength

Take the silty clay and clay as the research object the correlation between bulk density moisture content cohesion friction angle and unconfined compressive strength was analyzed using laboratory tests and the results showed that soil cohesion friction angle and unconfined compressive strength with good correlation the correlation coefficients were all above 09 while severe and soil...

CORRELATION BETWEEN UNCONFINED COMPRESSIVE

between UCS and physical properties of weathered Ocala limestone Kahraman et al 3 proposed a study on compressive and tensile strength of different types of rocks Altindag and Guney 4 conducted a wide study on different types of rocks to bring out strong correlation Table -1 Correlation between UCS...

The uniaxial compressive strength of soft rock

Mar 01 2007 0183 32 Correlation Between UCS and Point Load Strength Index The point load strength index Is 50 has been used to predict the uniaxial compressive strength UCS with a conversion factor of about 24 17 24 25 26 However this conversion factor may only adequately predict the UCS...

CORRELATION OF THE UNDRAINED SHEAR STRENGTH

Hence in this study a correlation was sought between the log of q u and the PI in accordance with eqn 6 The correlation of undrained shear strength q u with plasticity index PI appears to be spurious as soon as it is realized that the PI is obtained from tests on...

PAPER OPEN ACCESS Correlation between uniaxial

Correlation between uniaxial compressive strength UCS and blasting geometry on rock excavation at PT Agincourt Resources To cite this article D R Nainggolan et al 2018 IOP Conf Ser Earth Environ Sci 212 012065 View the article online for updates and enhancements...

Correlation between the uniaxial compressive strength and

have been reported in the literature It is generally proposed that the relationship between the Is50 and the UCS value depends on the rock types and also on the testing conditions This study investigates the correlation between the UCS and the Is50 of the Pungchon limestone with a total of 48 core samples obtained from a underground...

PROCESS INTEGRATION AND OPTIMISATION OF THE

Is50 values range between 605 MPa and 950 MPa indicating high strength ore In general UCS ranged between 60 MPa and 230 MPa For the Boddington ore the correlation between UCS and Is50 was found to be UCS = 17 x Is50 Rock strength data obtained during PIO projects conducted globally are provided in Figure 5...

Correlation between uniaxial compressive strength and

The Is 50 value is known to correlate well with UCS Various studies have come out with correlation between UCS and Is 50 It is found that the index-to-strength conversion factors are rock dependent This study presents the correlation between UCS and Is 50...

CORRELATION BETWEEN UNIAXIAL COMPRESSIVE

good correlation between UCS and Is 50 Variation on test data has been observed This is expected for natural material like rock The insignificance relationship of strength signifies that there is possibility of insufficient data of rock sampl Although there are some trends that correlate UCS and Is 50...

PDF Correlation between the California Bearing Ratio

The R obtained showed that there is a little correlation between CBR and UCS The California bearing ratio and the unconfined compressive strengths of sandcement were measured in ten 10 different prepared CBR and UCS specimens The sand-cement mix was prepared by mixing 105kg of sand with 55 by weight of cement and moisture content of 12...

Correlation between uniaxial compressive strength and

The Is 50 value is known to correlate well with UCS Various studies have come out with correlation between UCS and Is 50 It is found that the index-to-strength conversion factors are rock dependent This study presents the correlation between UCS and Is 50 of granite rock samples originating from a site located at Seremban Negeri...

Correlation between Uniaxial Compressive Strength and

correlations between the UCS test results and the corresponding test results of Is 50 The data was analyzed statistically to determine the degree of correlation and the variability of results 2 Previous...

The use of point load test for Dubai weak calcareous

Aug 01 2015 0183 32 The relationship between the point load strength index I s50 and the UCS q u for Dubai calcareous sandstone is shown in Fig 2 As expected the UCS increases with the point load strength index I s50 Linear regression analysis is used to provide mathematical representation of the correlation between the point load strength index and the UCS...

PREDICTION OF ENGINEERING PROPERTIES OF BASALTIC

correlation may be expressed as in the following equation Eq 1 1 Generally the correlation between UCS and Is 50 for Basalt specimens is agreed well with the pervious enormous correlation available in the literature in which most of them restrict the correlation constant between UCS and PLI at a range of between 20 and 24 32...

A New Evaluation Method for the Uniaxial Compressive

Uniaxial compressive strength UCS is a very important fundamental mechanical parameter for TBM construction In this work a predictive model of UCS was proposed according to the TBM parameters including torque penetration cutter number and cutter diameter The parameter of the new proposed model was established by fourteen existed TBM tunnels x2019 construction data...

8 STRENGTH OF SOILS AND ROCKS

separation between the platens the point load strength index I s is defined as IS = P/D 2 84 Corrections are applied to I S to allow for specimen size and shape to yield the size corrected point load strength index I S50 which is defined as the value of I S for a diametral test with D equal to 50mm...

Relationship between Texture and Uniaxial Compressive

Subsequently UCS of the samples were measured in laboratory Finally relationships between TC and UCS of rock samples were evaluated and related mathematical equations were presented Results showed that the UCS has a power relationship with TC which can be...

Correlating physico

Based on the results new strong correlation with correlation coeffecients above R2 080 are introduced for predicting the UCS Is 50 U and RN correlations between UCS point load index Is 50 RN P-wave velocity and impact strength index Kahraman 2002 estimated the P-wave velocity of intact rock from...

THE UNIAXIAL COMPRESSIVE STRENGTH OF SOFT ROCK

strength UCS Broch and Franklin 17 suggested a conversion factor of 24 as a correlation between UCS and I S 50 However this conversion factor is more effective for hard rock materials than soft...

Correlation of Sonic Travel Time to the Uniaxial

set the relationship between UCS and sonic travel time is expressed by the following equation where UCS is in psi and t is the travel time of the P-wave in microsec/ft UCS = 468 000 x e-0054t 1 The r-squared value for this equation is 087 indicating that a strong correlation between sonic travel time and UCS...

RELATION BETWEEN UNIAXIAL COMPRESSIVE STRENGTH POINT

Mar 31 2014 0183 32 Correlations between UCS and Is 50 The various relationships between UCS and Point Load Index PLI and their correlation coefficients were found through statistical regression analysis All the three functions linear exponential and power showed increase in UCS with increase in PLI values thus representing a positive correlation between...

Correlation between the uniaxial compressive strength and

Apr 01 2013 0183 32 It is generally proposed that the relationship between the Is50 and the UCS value depends on the rock types and also on the testing conditions This study investigates the correlation between the UCS and the Is50...

Estimating Unconfined Compressive Strength of Sedimentary

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 value If no data about C was available the code gives generalized values for C acquired from the ISRM suggested m e-...

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...

Simple Correlations between Rock Abrasion and Other

One of the main factors effecting abrasion resistance is the amount of friction between two entiti The correlation between LA Abrasion and shear strength provide a medium correlation R 2 = 043 44 Summary of Rock Properties Correlations Transformations can be considered once laboratory and field testing is completed and data is compiled...

DOC Conversion of Point Load Test Results to

The results indicate that there is a correlation between UCS and APL as well as ITS and DPL Keywords Uniaxial Compressive Strength UCS Indirect Tensile Strength UCS Axial Point Load Index APL Diametral Point Load Index DPL Conversion Factor Introduction at last different conversion factors for different rock types are presented...

Point load strength index of granitic irregular lumps

The correlation between the UCS and PLSI Is 50 of irregular lumps is found to be 2227 which is very close to the values of 2161 and 2172 for diametral and axial PL tests using the size correction factor of F = De/50 045 This indicates that the correlation between UCS and PLSI from point load tests on irregular lumps established in this...

Empirical relations between ultrasonic P

The correlation relationship between ultrasonic velocity density porosity and UCS for samples of basalt were determined Such correlations may provide a good estimation in related or similar geological setting regions for bulk density porosity and uniaxial compressive strength which in many cases could avoid time-consuming and tedious lab...

Study on Relationship between UCS of Cemented Tailings

The results show that there is a strong linear correlation between the UCS and the weight loss of the hydration product calcium silicate hydrate C-S-H for the CTB made of glue powder while the UCS is related to the weight losses of C-S-H and Ca OH 2 for the CTB made of ordinary Portland cement The results acquired by this paper provide a...