Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications1 This standard is issued under the fixed designation D5731; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

Point Load Test (PLT) is practically used in geotechnical engineering to determine rock strength index. Despite that the PLT is fast, economical and simple in either field or laboratory, Uniaxial ...

calculation of point load strength index (ASTM D5731-08) . There are three main types of PLT; axial, diametral and lump or block. Axial and diametral types are performed on rock point load core samples. The strength index determined by PLT must be corrected to the standard equivalent diameter (D e) of 50mm (Peng and Zhang2007).

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 and axial tests ...

4. Point Load Test The ASTM-D5731-08 [8] code gave a clear justification for the use of the point load test. The code started its justification by giving statements about the time and money spent on performing a UCS test and recommended the use of simpler in-situ tests of which the point load test was one of them. The code also stated that this ...

Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications ORDER Scope 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.

ASTM D5731-16 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications Translate name STANDARD published on 1.12.2016 The information about the standard: Designation standards: ASTM D5731-16 Publication date standards: 1.12.2016 SKU: NS-672809 The number of pages: 11

ASTM D5731-16 December 1, 2016 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications 1.1 This test method covers the guidelines, requirements, and procedures for determining the point load strength index of rock.

Procedural steps 1) Select and trim rock sample to test specimen size, using any convenient technique, with a typical width of approximately 50 mm, and with a ratio of greatest to least dimension (see Fig. 3); 2) Insert test specimen in the loading device and close the platens to make contact along the greatest width away from edges and corners.

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.

ASTM D5731 PDF Chris May Field. Aug 21, 2019· 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. More

Supports the following standards: ASTM D5731, EN 1997 The point Load Tester is used to determine the strength values of a rock specimen, both in the field and in the laboratory. It consists of a load frame for applying loads up to 55kN, a mounted hydraulic ram and a pressure gauge with 0.001kN precision for maximum load indication.

D5731 − 16 instead of using the procedure outlined in 10.2.4 and illustrated on Fig. 7. 10.3 Mean Value Calculation: 10.3.1 Mean values of Is(50), as defined in 10.3.2, are to be used when classifying samples with regard to their point load strength and point load strength anisotropy indices. 10.3.2 The mean value of Is(50) is to be ...

Point load When extensive testing and/or timely information is required strength of rock is usually an order of magnitude lower than the for preliminary and reconnaissance information, alternative compressive strength of rock. tests such as the point load test can be used to reduce the time 6.2.3 The load frame shall be designed and constructed ...

The point load strength index (Is) was evaluated from Eqs. (6-7) and correlated to UCS by a coefficient factor (Eq. (8)). Rusnak and Mark (1999) had proposed 21.9 as conversion factor for typical ...

rates within this range will provide strength values that are reasonably free from rapid loading effects and reproducible within acceptable tolerances. Lower strain rates are permissible, if required by the investigation. 10. Calculation 10.1 Calculate the compressive strength in the test specimen from the maximum compressive load on the ...

ASTM D5731-16 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications. ... Documents sold on the ANSI Webstore are in electronic Adobe Acrobat PDF format, however some ISO and IEC standards are available from Amazon in hard copy format. ...

ASTM D5731-08 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications 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.

The upper point is fixed to the crosshead with a scale mounted on the frame to provide specimen diameter information for use in point-load strength index calculations. Pressure is indicated directly on the digital readout unit. Loads up to 55 kN can be applied to specimens as large as 101.6 mm in diameter. The apparatus is supplied complete ...

Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications. ASTM D5731. Point Load Strength Index, Estimated Uniaxial Compressive Strength, Strength Anisotropy Index. Compressive strength, index test, point load, rock, axial, diametral. Details.

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, Media MinE 323-Point load strength Index (lab 1) Share Watch on Lecture on Determination of Point Load Strength Index

ASTM D5731-16 December 2016 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications Most Recent ASTM D5731-08 January 2008 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications Historical Version

equal to 50 mm, a correction is required (Fi gure 3). The unconfined co mpressive strength q u is 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 ...

Point Load Test (PLT) is practically used in geotechnical engineering to determine rock strength index. Despite that the PLT is fast, economical and simple in either field or laboratory,...

Standard : ASTM D5731 Manufacturer : Floxlab Load capacity: 100 kN Maximum sample size: 4 inches (101.6 mm) Pump pressure: 70 Mpa Pressure accuracy : 0.2% FS Weight: 25 kg Dimensions : 50 x 30 x 25 cm Benefits * Simple test * Direct reading of specimen diameter * Extreme rigidity * Inexpensive instrument

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.

ASTM D5731-16 December 1, 2016 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications 1.1 This test method covers the guidelines, requirements, and procedures for determining the point load strength index of rock.

ASTM D5731-16 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications standard by ASTM International, 12/01/2016 View all product details Most Recent Track It Language: Available Formats Options Availability Priced From ( in USD ) PDF 👥 Immediate download $54.00

to a UCS test. The point load test allows the determination of the uncorrected point load strength index (Is). It must be corrected to the standard equivalent diameter (De) of 50 mm. If the core being tested is "near" 50 mm in diameter (like NX core), the correction is not necessary. The procedure for size correction

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. 1 ...

This test method is performed to determine the point load strength index of rock specimens and, if required, the point load strength anisotropy index. Rock specimens in the form of either core (the diametral and axial tests), cut blocks (the block test), or irregular lumps (the irregular lump test) are tested by application of concentrated load ...

10.1.5 Average thickness and average diameter of the test 9.3 Mean Value Calculation: specimen, 9.3.1 Mean values of Is(50), as defined in 9.3.2, are to be 10.1.6 The maximum applied load P, used when classifying samples with regard to their point load 10.1.7 The distance D or D8, or both, if required, strength and point load strength ...

View D5731.pdf from ENGINEERIN EOH3401 at Universiti Putra Malaysia. ... 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 ... Current edition approved May 15, 1995. Published July 1995. 2 Annual Book of ASTM Standards ...