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astm designation of point load index test

ASTM D5731 - 08 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications. This standard is a part of ASTM Book of Standards Volume 04.08. Click to order ASTM D5731-08. Annotation and contents. Source of this annotation and contents: ASTM International.

According to ASTM D5731-08, Uncorrected point load strength index (Is) is an indicator of strength Note 1 : L= Distance between contact points and nearest free face, and D e = equivalent core diameter [8] Fig. 1 Load Configurations and Specimen Shape Requirement for (a) the Diametral Test, (b) the Axial Test (ASTM D5731-08, 2008) Since the ...

Homepage>ASTM Standards> ASTM D5731 - 16 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications Sponsored link A PDF redline is a quick and easy way to compare all of the changes between the current, active standard and the previous version.

8 - 3 Point Load Index (Strength) ASTM D 5731 Purpose To determine strength classification of rock materials through an index test. Procedure Rock specimens in the form of core (dia metral and axial), cut blocks or irregular lumps

Alternatively, the UCS may be estimated using the point load test, which is conducted on specimens in the form of cores, blocks or irregular pieces with a diameter of 30 mm and 85 mm, respectively (ASTM, 2008b). The point load test is especially useful when core specimens cannot be extracted from fractured or weathered rock masses.

Dec 01, 2016· 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. 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.

Point Load Index • Quick evaluation for uniaxial strength (field or lab setup)(field or lab setup) • ASTM D 5731 procedures • Little sample preparation (cores, pieces) • Measure force (P) to crunch intact rock specimen • Point Load Index: I s = P/d e 2 where d e = equivalent core diameterequivalent core …

Designation: D4546 − 08 Standard Test Methods for One-Dimensional Swell or Collapse of Cohesive Soils1 This standard is issued under the fixed designation D4546; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

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. Rock specimens in the form of core (diametral and axial tests), cut blocks (block test), or irregular lumps ...

Although point load test is also an efficient means in determining rock strength anisotropic index (ratio of mean point load strength values measured perpendicular and parallel to planes of ...

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 Sent 77v1 to Jack Hamilton to post on Utah website 8/19/05

such as the point load test can be used in the field to reduce the time and cost of compressive strength tests. 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

Apr 02, 2019· ASTM D – 02 Standard Test Method for Determination of the Point Load Strength Index of Rock. However, it is a time-consuming and expensive test that requires significant specimen preparation and the results may not be available for a long time after the samples are collected.

ASTM D5731-16, Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications, ASTM International, West Conshohocken, PA, 2016, Back to Top

Designation: D 2783 – 03 An American National Standard Standard Test Method for ... 3.1.9 load-wear index(or the load-carrying property of a lubricant)—an index of the ability of a lubricant to minimize ... An ASTM Method of Test," National Lubricating Grease …

related to the point load index with 50 mm cores Is50 as follows Beside the diametral test, the axial test and the irregular lump test have also been proposed (see Figures 2b and 2c). Strength anisotropy can also be assessed by using the point load index as suggested by Broch (1983) who proposed an anisotropy index Ia equal to 2.3 Uniaxial Tension

ASTM D Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength. GeoTesting Express is a provider of Rock Testing Services – ASTM D, Standard Test Method for Determination of the Point Load Strength Index of Rock and.

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.

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

Test Method ASTM Designation: D 5731, "Standard Test Method for Determination of the Point Load Strength Index of Rock" Summary of Test Method This index test is performed by subjecting a rock specimen to an increasingly concentrated load until failure occurs by splitting the specimen.

ASTMD573116-Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications- 1.1 This Customer Service: ... ASTM D5731-16 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications.

Designation: D 1238 – 04 Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer1 This standard is issued under the fixed designation D 1238; the number immediately following the designation indicates the year of original adoption or, …

ASTM D5731-05 Standard Test Method for Determination of the Point Load Strength Index of Rock. 1.1 This test method covers the guidelines, requirements, and procedures for determining the point load strength index of rock. Specimens in the form of rock cores, blocks, or irregular lumps can be tested by this test method.

1.1 This test method covers the determination of the load-carrying properties of lubricating greases. Two determinations are made: 1.1.1 Load-Wear Index (formerly called Mean-Hertz Load), and 1.1.2 Weld Point, by means of the Four-Ball Extreme-Pressure (EP) Tester. 1.2 The values stated in SI units are to be regarded as the standard.

Nov 11, 2011· Correlation Between Point Load Index and Uniaxial Compressive Strength for Different Rock Types. Authors; ... ASTM (1984) American Society for testing and materials. ... Whittacker BN (1980) Application of the point load index test to strength determination of rock and proposals for a new size correction chart. In: Proceedings of 21st US Symposium.

ASTM-D5731 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications - compressive strength; index test; point load; rock; rock classification;; ICS Number Code 93.020 (Earth works. Excavations. Foundation construction. Underground works)

Designation: D3689 – 07 Standard Test Methods for Deep Foundations Under Static Axial Tensile Load1 This standard is issued under the fixed designation D3689; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

Designation: D5731 − 16Standard Test Method forDetermination of the Point Load Strength Index of Rock andApplication to Rock Strength Classifications1This standard is issued under the fixed designation D5731; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.

Designation: D 790 – 03 Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials1 This standard is issued under the fixed designation D 790; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last ...

Dec 01, 2016· 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. 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.

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