﻿ point load test on rock

# Point Load Test On Rock

### Standard Test Method for Determination of the Point Load ...

5.2 The point load strength test is used as an index test for strength classification of rock materials. The test results should not be used for design or analytical purposes. The test results should not be used for design or analytical purposes.

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

The point load test (PLT) is an accepted rock mechanics testing procedure used for the calculation of a rock strength index. This index can be used to estimate other rock strength parameters. The focus of this paper is to present the data analysis used to correlate the point load test index (Is50) with

### AMERICAN SOCIETY FOR TESTING AND MATERIALS Reprinted …

5.3 This test method is performed to determine the point load strength index (Is(50)) of rock specimens, and the point load strength anisotropy index (Ia(50)) that is the ratio of point load strengths on different axes that result in the greatest and least values. 5.4 Rock specimens in the form of either core (the diametral

The Point Load Test, also known as the Point Load Strength Index Test, is used to calculate the rock strength index of a rock specimen. From the rock strength index, other rock parameters, such as the uniaxial compressive strength, can be estimated.This test is very economical due to the simplicity of the apparatus and the minimal amount of required materials to execute.

### Point-Load Test | Mining | SGS

The Point-load Test measures the Point Load Strength Index (Is(50)) of rock specimens, and their Strength Anisotropy Index (Ia(50)), which is the ratio of Point Load Strengths in directions that give the greatest and least values.

### Point Load Test | JKTech

The Point Load Index can be used to simultaneously characterise rock for blastability and comminution processes. In a Point Load Test, a sample of rock is mounted between two pointed plates and pressure is applied until failure of the sample occurs. The peak applied load is recorded.

### Evaluation of the Point Load Test for Rock

In that the point load test is related to various other' tensile tests for concrete and rock, the direct origins of the point load test are somewhat uncertain. In one of the earliest references available, a Russian, Protodyakonov (1), reported testing irregular rock specimens roughly shaped by hammering.

### Point load test on anisotropic rocks | Request PDF

Point load test is considered as the most efficient index tool to predict uniaxial compressive strength of so-called isotropic rock materials. Although point load test is also an efficient means ...

### STANDARD OPERATING PROCEDURE No. 77 POINT LOAD …

Questa Rock Pile Stability Study SOP 77v3 Page 1 SOP 77v3 10/30/2008 STANDARD OPERATING PROCEDURE No. 77 POINT LOAD STRENGTH TEST REVISION LOG Revision Number Description Date 77v0 Original SOP – Vanessa Candida Viterbo 06/28/2005 77v1 First edits LMK, changed SOP # from 75 to 77 because 75 is the Specific Gravity SOP 6/28/05

### Evaluation of the Point Load Test for Rock

In that the point load test is related to various other' tensile tests for concrete and rock, the direct origins of the point load test are somewhat uncertain. In one of the earliest references available, a Russian, Protodyakonov (1), reported testing irregular rock specimens roughly shaped by hammering.

### (PDF) Using the point load test to determine the uniaxial ...

Point load testing is used to determine rock strength indexes in geotechnical practice. The point load test apparatus and procedure enables economical testing of core or lump rock samples in ...

### 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.

### Point Load Rock Testing | Alliance Geotechnical

Point Load Rock Strength The point load tester is used to determine the Point Load Strength Index (Is(50)). This index provides a method for establishing rock strength classification. The point load test apparatus and procedure enables economical testing of core or lump rock samples.

Overall determining the strength of a rock through point load test yields the important values such as UCS which was over 250Mpa and Is of 10.54MPa highlighting that the rock is extremely strong and combined with the visual inspection of grey coarse grained the conclusion is that the rock …

### Point load test application for estimating compressive ...

strength (UCS) test as stated in JIS A1170. To get an alternative solution with smaller specimen, point load test (PLT) has been selected which is a simple test and widely accepted in rock materials research, but relatively new in concrete. The

### Rock Testing Equipment - Point Load Tester Exporter from ...

Rock Testing Equipment We are offering a wide range of Rock Testing Equipment.Our products range in which includes the Polishing and Lapping Machine, Core Drilling Machine and Point Load …

### Uniaxial compressive strength and point load strength of rocks

Uniaxial compressive strength and point load strength of rocks. ... G. WijkThe point load test for the tensile strength of rock. Geotech. Test. J., 3 (1980), pp. 49-54. Google Scholar. 23. Y. Hiramatsu, Y. OkaDetermination of the tensile strength of rock by a compression test of an irregular test piece.

### Correlation between the point load index (Is(50)) and the ...

3.2 POINT LOAD TEST (PLT) The Point Load Test is also known as the Franklin test. The first reference is by Reichmuth, D. (1968) [10], who proposed obtaining the resistance to a point load and a determination of the unconfined compression strength via correlation, regardless of whether they are irregular, regular, or cylindrical rock controls [11].

### Rock Testing Lab Services, Rock Engineering | GeoTesting ...

Rock Testing Service Sheet Tunnels. GeoTesting Express performs a full-range of tests on rock. We prepare and tests rock specimens in-house. Servicing the geotechnical, tunneling, mining and excavation industries, we provide rapid strength and index testing of rock samples.

### Rock Testing - Geolabs

The sample should be sufficient to permit 5 test scratches (10 mm) at least 5 mm from the edge of the rock surface and each test should be 5 mm apart. If it is a core, the diameter should be less than 76 mm and length less than 150 mm. Ideally size is like a tennis ball.

### Correlation between Uniaxial Compressive Strength and ...

The point load test was performed in accordance with the procedure described by Broch and Franklin [5] and standardized by ISRM [14]. Digital Point Load test apparatus, model 45-D0550/D, made by Controls, England was used for Point Load testing of the rock samples (Figure 3). The core samples were diametrically loaded during the test.

### APPLICATIONS DESCRIPTION TEST PROCEDURE

The Point Load Tester allows the user to determine an “Uncorrected Point Load Strength Index” (I s). This index must be corrected to a standard equivalent diameter (D e) of 50 mm. It then becomes a unique property of the rock tested (I s(50)) which is most useful in rock strength classi˚ cation.

A wide variety of rock point load tester options are available to you, such as auto testing machine, impact testing machine, and strength testing machine. You can also choose from electronic, hydraulic. There are 91 rock point load tester suppliers, mainly located in Asia.

A wide variety of rock point load tester options are available to you, such as auto testing machine, impact testing machine, and strength testing machine. You can also choose from electronic, hydraulic. There are 91 rock point load tester suppliers, mainly located in Asia.

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

STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. TESTING OF INTACT ROCK FOR STRENGTH 2.1 Uniaxial Compression 2.2 Point Load Testing 2.3 Uniaxial Tension 2.4 Indirect Tension Tests 2.5 Shear Tests 2.6 Confined Compression Tests (Triaxial Tests) 2.7 Biaxial and Multiaxial Tests 2.8 Other Tests 3. PARAMETERS AFFECTING ROCK STRENGTH 4.

### Rock Strength Testing, Rock Hardness Test

Designed specifically for rock testing applications. H-3417.XX Equotip 550. Extensively used for rock hardness and for investigating weathering effects on rocks. HS-4157 Point Load Tester. Used to determine the strength values of a rock specimen, both in the field and in the laboratory. HS-4158 Aggregate Impact Value.

### Laboratory Testing for Rocks - kau

The sample is placed in the test drum of 2 mm standard mesh cylinder of 100 mm long and 140 mm in diameter with solid removable lid and fixed base, and is dried to a constant mass at 105°C.

### Geotechnical Test Equipment - esands

Point load strength provides a method for establishing rock strength classification. It also indicates rock anisotropy which assists in prediction of rock strength properties such as uniaxial tensile and compressive strengths.

### Standard Test Method for Determination of the Point Load ...

1.1 This test method covers the guidelines, requirements, and procedures for determining the point load strength index of rock. This is an index test and is intended to be used to classify rock strength. 1.2 Specimens in the form of rock cores, blocks, or irregular lumps with a test diameter from 30 to 85 mm can be tested by this test method.

### Standard Test Method for Determination of the Point Load ...

5.2 The point load strength test is used as an index test for strength classiﬁcation of rock materials. The test results should not be used for design or analytical purposes. 5.3 This test method is performed to determine the point load strength index of rock specimens and, if required, the point load strength anisotropy index.

The test consists to compress up to failure a core or irregular block of rock sample by the application of a point load by a couple of steel conical points of standard size. The load required obtaining the failure of the sample and the distance between the conical points before and after the test is then measured.

### Digital point load testers | Matest

Used to determine the strength values of a rock specimen both in the field and in the laboratory. They consist of a load frame for applying loads, on which a manual hydraulic jack is mounted. The applied load is measured by a high precision electric load cell with a digital display unit range 0-56kN proving: 65.000 divisions, 0.001 kN resolution, linearity 0.05%, hysteresis 0.03% ...

### The point-load test in geotechnical practice - ScienceDirect

The point-load test in geotechnical practice. Eng. Geol., 9: 1--11. The point-load test is evaluated for practical applications in engineering geology. The three variations of the test, i.e., diametral, axial and irregular lump are assessed and it is found that the diametral point-load test …

### ISRM Suggested Method for Determining Point Load Strength

ISRM: POINT LOAD TEST 53 RTH 325-89 Suggested Method for Determining Point Load Strength SCOPE I.(a) The Point Load Strength test is intended as an index test for the strength classification of rock …

### Correlation Between Point Load Index and Uniaxial ...

Smith HJ (1997) The point load test for weak rock in dredging applications. Int J Rock Mech Min Sci 34:3–4 (Paper No. 295) CrossRef Google Scholar. Tsiambaos G, Sabatakakis N (2004) Considerations on strength of intact sedimentary rocks. Eng Geol 72:261–273 CrossRef Google Scholar.

### Point Load Testing Guidance - transportation.wv.gov

Point Load Testing Guidance Unconfined Compressive Strength (UCS) is important when estimating bearing resistance and skin friction in rock. Obtaining rock core specimens with a length to dimeter ratio of 2:1 is sometimes not possible for our weaker rocks. The point load test is a method that allows smaller blocky pieces of rock to be tested.