STRENGTH CLASSIFICATION OF GRANITE USING POINT LOAD …

INTRODUCTION OBJECTIVE METHODOLOGY ANALYSIS & RESULTS DISCUSSIONS CONCLUSIONS Cutting the core into a different length using cutting machine Mark the point to be tested and scanned both side of core Name of Supervisor: Dr Zainuddin Md Yusoff Chart for …

Evaluation of the Point Load Test for Rock

EVALUATION OF THE POINT LOAD TEST FOR ROCK Property of The point load test has been gaining acceptance in the field of rock mechanics as a relatively quick and inexpensive field procedure Advantages claimed are the ability to field test either cores or fragments of rock without preparation, at in-situ moisture content, with light weight and inexpensive equipment Sealing, transporting

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 stone is to present the data analysis used to correlate the point load test index (Is50) with

POINT LOAD STRENGTH INDEX TEST OF ROCK (IS-8764

stone Report: Point load test Essay Example for Free

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 1054MPa highlighting that the rock is extremely strong and combined with the visual inspection of grey coarse grained the conclusion is that the rock is a very strong granite

Correlation Between Point Load Index And Very Low Uniaxial

100) The point load PLT)test ( is an accepted rock mechanics testing procedure used for the calculation of rock strength index This index can be used to estimate other rock strength parameters

Point Load Test

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

The point-load strength test - ScienceDirect

THE POINT-LOAD STRENGTH TEST 695 (d) The irregular lump test Rock lumps with typical diameter approximately 50 mm and with a ratio of longest to shortest diameter of between 10 and 1"4 are selected and trimmed using any convenient technique At least twenty lumps should be tested per sample Each lump is inserted in the testing machine and the platens closed to make contact along the longest

Correlation Between Point Load Index And Very Low Uniaxial

100) The point load PLT)test ( is an accepted rock mechanics testing procedure used for the calculation of rock strength index This index can be used to estimate other rock strength parameters Thefocus of this stone is to present the data analysis used to correlate the point Is 50) with the uniaxial load index

Predicting Uniaxial Compressive Strength by Point Load

30/03/2006 · ASTM (American Society for Testing and Materials) (2001): Standard method for determination of the point load strength index of rock, Designation D 5731–5795 Google Scholar

STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1

22 Point Load Testing In order to overcome many of the problems associated with the unconfined compression test, Broch and Franklin (1972) proposed a testing method called the Point Load Test

STANDARD OPERATING PROCEDURE No 77 POINT LOAD STRENGTH TEST

Load Test Method - Suggested Method for Determining Point Load Strength (to replace original document published in 1972) (Appendix I) and provides technical guidance and procedures that will be employed measuring the Point Load Strength Index test for the

AMERICAN SOCIETY FOR TESTING AND MATERIALS Reprinted …

52 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 53 This test method is performed to determine the point load strength index (Is(50)) of rock specimens, and the point

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

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

Correlations between uniaxial Compressive strength and

Correlations between uniaxial Compressive strength and point load strength or some brailian high-grade metamorphic rocs Uniaxial compressive strength tests on cylinder samples; Point load strength tests on cylinder and Weathering blocky (irregular) samples; Dry sand saturated specific density; Apparent porosity; and Water absorption capacity Every test was done according to the ISRM (2007) …

Standard Test Method for Determination of the Point Load

The specifics of the point load test program need to be developed prior to testing and possibly even before sampling Such specifics would be dependent on the intended use of the data, as well as possible budgetary constraints and possible other factors, which are outside the scope of this test method

How to Calculate a Point Load | Sciencing

13/03/2018 · A point load is an equivalent load applied to a single point, which you can determine by calculating the total load over the object’s surface or length and attributing the entire load to its center

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 …

8 STRENGTH OF SOILS AND ROCKS - peopleengunimelbeduau

The point load strength test may be used to provide an indirect measurement of tensile strength, but it is more commonly used as an index test The point loading is applied to rock core specimens or to irregular rock fragments in a testing machine If P is the failure load and D is the

Uniaxial compressive strength and point load strength of

INTRODUCTION Point load strength test has been found useful in rock classification and rock strength estimation [1] In general, the point load test can be applied axially or diametrally to rock cores (see Fig 1), or to irregular lumps The required testing apparatus is light and usually portable [2], and more importantly, the test is inexpensive Standard testing procedure has been suggested by the …

USC Research Bank - University of the Sunshine Coast

Strength is an important engineering parameter for determining excavatability and load bearing characteristics of rock Because of the low test cost, it is desirable to identify a multiplier relating the Point Load Test Strength Index (Is(50)) with strength derived using the more expensive Uniaxial Compressive Strength Test Samples from eight

Correlations between uniaxial Compressive strength and

Correlations between uniaxial Compressive strength and point load strength or some brailian high-grade metamorphic rocs Uniaxial compressive strength tests on cylinder samples; Point load strength tests on cylinder and Weathering blocky (irregular) samples; Dry sand saturated specific density; Apparent porosity; and Water absorption capacity Every test was done according to the ISRM (2007) …

What Is a Point Load? | Reference

In the field of engineering, a point load is a load applied to a single, specific point on a structural member It is also known as a concentrated load, and an example of it would be a hammer hitting a single nail into a beam

Standard Test Method for Determination of the Point Load

52 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

Point Load Definition - What Does Point Load Mean in

A good example of a point load that is not anticipated, is the sliding of a roof load of snow off the pitched roof onto a flat roof This situation would cause a point load created by the pile of snow, and if heavy enough could cause failure in the structure The influence of hurricanes or earthquakes can shift the designed loading of a structure If there is a shifting of forces that produce

Types of Load | Explanation | Examples | Load Diagrams

17/11/2013 · Point load is denoted by P and symbol of point load is arrow heading downward (↓) Distributed Load Distributed load is that acts over a considerable length or you can say “over a length which is measurable

60KG point load on granite surface plate 1 - YouTube

21/02/2017 · A 60KG point load applied to the centre of the 3' x 2' x 4" table No measurable deflection with this 00001 sylvac Was an after thought to video the unloading which I did straight away in video 2

How to Calculate a Point Load | Sciencing

13/03/2018 · A point load is an equivalent load applied to a single point, which you can determine by calculating the total load over the object’s surface or length and attributing the entire load to its center

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 …

Point Load Test | JKTech

The peak applied load is recorded This is repeated on a minimum of 20 pieces of rock within a sample with the results used to calculate the Point Load Index This is repeated on a minimum of 20 pieces of rock within a sample with the results used to calculate the Point Load Index

Tuen Mun , coluvium , granite , uniaxial compression

Tuen Mun: Colluvium, Granite: Granite: Granite: Granite: Granite: Granite : Uniaxial Compression Test: Uniaxial Compression Test: Point Load Test: Rock Joint Shear Test

Point Load Tests: Correlation Factors and Contractual Use

The considerable advantage obtained using the point load strength as a quick test in contractual situations is described The stone discusses the correlation factors obtained as a result of testing the same material from the Corallian strata at Weymouth by point load and uniaxial compression

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

Point Load On Concrete Sstone - Structural engineering

08/02/2010 · RE: Point Load On Concrete Sstone bdSE (Structural) 8 Feb 10 17:00 From your description of the design it sounds like there will be three girder lines running the length of the building

Lintel load span tables for beginners | Stressline Limited

Lintel load span tables: A beginner’s guide Andrew 2nd February 2017 ALL , Concrete Lintels , Steel Lintels 63 Comments Load span tables can be difficult to …

Procedure for Testing and Examining Lifting Appliances and

Where a crane with a jib which has a variable vertical operating radius is to be tested, the test should be carried out by applying a proof load in accordance with sub-paragraph 21 at