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. We can prepare test specimens from cobbles, boulders, blocks or cores with our equipment. We can also core specimens perpendicular to the direction of a core run.
We utilize specialized equipment and have developed detailed processes for preparing specimens to meet the specifications set forth in ASTM D4543: "Preparing Rock Core Specimens and Determining Dimensional & Shape Tolerances", which is a requirement for any rock strength test. GTX is validated by the U.S. Army Corps of Engineers and accredited by A2LA for testing rock samples.
Rock requiring unconfined compression or triaxial compression testing must be prepared and meet very strict dimensional tolerances in accordance with ASTM D4543. Our technicians can prepare up to 8 rock specimens at one time with a higher degree of precision using our Okamoto surface grinder.
GTX is one of the few labs in the world that strictly adheres to the ASTM requirements for dimensional tolerances. Tests performed without well prepared surfaces will give much lower unconfined compressive strength which can mislead one to choose the wrong mining equipment.
GeoTesting Express utilizes state-of-the-art automated testing equipment to perform high-end strength testing of rock (Unconfined Compression, Direct Shear, Brazilian Tensile Strength, Elastic Moduli, Triaxial, etc.).
Rock deformation device for measuring lateral and axial strain during testing for Poisson’s Ratio and elastic modulus determination.
Filter tests (enter standard designation, title or keyword):
Found (31)
Test Method | Standard | Test Property | Keywords | |
---|---|---|---|---|
Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements | AASHTO T 226 | Shear Strength, Young's Modulus, Angle of Internal Friction | Rock, Rock Strength, Rock Triaxial, Young's Modulus | Details |
Standard Test Method for Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements **ASTM has discontinued this method, the industry-accepted standard test method is now ASTM D7012A | ASTM D2664 | Shear Strength, Young's Modulus, Cohesion intercept, Angle of Internal Friction | Rock, Rock Strength, Rock Triaxial | Details |
Standard Test Method for Laboratory Determination of Pulse Velocities and Ultrasonic Elastic Constants of Rock | ASTM D2845 | LPV and TPV (Longitudinal and transverse pulse velocity) | Ultrasonic testing, velocity-pulse, LPV, TPV, Longitudinal pulse velocity, Transverse pulse velocity | Details |
Standard Test Method for Direct Tensile Strength of Intact Rock Core Specimens | ASTM D2936 | Tensile strength | Rock, Rock Tensile Strength, Tension Properties, Tension Tests, direct tension | Details |
Standard Test Method for Unconfined Compressive Strength of Intact Rock Core Specimens **ASTM has discontinued this method, the industry-accepted standard test method is now ASTM D7012C | ASTM D2938 | Unconfined Compressive Strength | Compression testing, compressive strength, loading tests, rock | Details |
Standard Test Method for Elastic Moduli of Intact Rock Core Specimens in Uniaxial Compression **ASTM has discontinued this method, the industry-accepted standard test method is now ASTM D7012D | ASTM D3148 | Young's Modulus, Poisson's ratio | Compression testing, loading tests, modulus of elasticity, modulus-Young's, rock | Details |
Standard Test Method for Splitting Tensile Strength of Intact Rock Core Specimens | ASTM D3967 | Splitting tensile strength | Compression testing, indirect tensile strength, loading tests, rock, splitting tensile strength, tension properties, Brazilian tensile strength | Details |
Standard Test Method for Permeability of Rocks by Flowing Air | ASTM D4525 | Coefficient of Permeability | Flow and flow rate, permeability, rock | Details |
Standard Practices for Preparing Rock Core Specimens and Determining Dimensional and Shape Tolerances | ASTM D4543 | Sample preparation | Diameter, dimensions, rock specimen preparation, surface analysis, tolerances. | Details |
Standard Test Method for Slake Durability of Shales and Similar Weak Rocks | ASTM D4644 | Slake durability index | Abrasion resistance, shale, slake durability, weak rocks. | Details |
Standard Test Method for Evaluation of Durability of Rock for Erosion Control Under Freezing and Thawing Conditions | ASTM D5312 | Percent Loss | Armor stone, breakwater stone, climatic setting, erosion control, freeze-thaw, gabion-fill, riprap, rock, freezing-thawing | Details |
Standard Test Method for Evaluation of Durability of Rock for Erosion Control Under Wetting and Drying Conditions | ASTM D5313 | Percent Loss | Armor stone, breakwater stone, climatic setting, erosion control, gabion-fill, riprap, rock, wetting-drying, wet-dry | Details |
Standard Test Method for Elastic Moduli of Undrained Intact Rock Core Specimens in Triaxial Compression Without Pore Pressure Measurements **ASTM has discontinued this method, the industry-accepted standard test method is now ASTM D7012B | ASTM D5407 | Young's Modulus, Poisson's ratio | Compression testing, loading tests, modulus of elasticity, modulus-Young's, triaxial compression | Details |
(Rock Direct Shear) Standard Test Method for Performing Laboratory Direct Shear Strength Tests of Rock Specimens Under Constant Normal Force | ASTM D5607 - Direct Shear | Shear Strength, Friction Angle; Joint Roughness Coefficient | Asperity, direct shear strength, discontinuity, displacement, rock, roughness, sliding friction, stress | Details |
(Rock Sliding Friction) Standard Test Method for Performing Laboratory Direct Shear Strength Tests of Rock Specimens Under Constant Normal Force | ASTM D5607 - Sliding Friction | Shear Strength, Friction Angle, Joint Roughness Coefficient | Asperity, direct shear strength, discontinuity, displacement, rock, roughness, sliding friction, stress | Details |
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 |
Standard Test Method for Determination of Rock Hardness by Rebound Hammer Method | ASTM D5873 | Hardness | Schmidt Hammer, Rock Hardness, Rebound Hardness | Details |
Standard Test Method for Determining Rock Quality Designation (RQD) of Rock Core | ASTM D6032 | RQD | Classification, index, logging, quality, rock core, RQD | Details |
Specific Gravity & Absorption of Rock for Erosion Control (Rip-Rap) | ASTM D6473 | Specific Gravity & Absorption | specific gravity, absorption, rip-rap | Details |
Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures | ASTM D7012A | Triaxial Compressive Strength | Rock, Rock Strength, Rock Triaxial | Details |
Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures | ASTM D7012B | Triaxial Compressive Strength, Young's Modulus, Poisson's ratio | Rock, Rock Strength, Rock Triaxial, Elastic Moduli | Details |
Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures | ASTM D7012C | Uniaxial Compressive Strength | Rock, Rock Strength, Rock Unconfined Compressive Strength, Rock Uniaxial Compressive Strength | Details |
Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures | ASTM D7012D | Uniaxial Compressive Strength, Young's Modulus, Poisson's ratio | Rock, Rock Strength, Rock Unconfined Compressive Strength, Rock Uniaxial Compressive Strength, Elastic Moduli | Details |
Cerchar Abrasivity Index (CAI) | ASTM D7625 | Abrasivity | Cerchar, abrasivity, index, CAI, rock | Details |
Punch Penetration Index | Handewith | Punch Penetration Index | Punch Penetration, Tunnel Boring Machines, Penetration Rates | Details |
Unit Weight, Porosity & Specific Gravity | ISRM | Unit weight, porosity, specific gravity | rock, unit, weight, porosity, specific gravity | Details |
Petrographic Analysis | ISRM | Mineralogy and Rock Description | petrographic, mineralogy | Details |
Total Hardness | ISRM & Tarkoy | Hardness | total, hardness | Details |
Moh's Hardness | Moh | Hardness | Details | |
Drillability Test Suite | NTNUs 13A-98 Drillability Test Methods & SINTEFs Standards | Drilling Rate Index, Bit Wear Index, Cutter Life Index, Flakiness, Brittleness Value, Siever's J-Value, Abrasion Value, Abrasion Value Cutter Steel | Drillability, NTNU, Drilling Rate Index, Bit Wear Index, Cutter Life Index | Details |
Modified Taber Abrasion | Tarkoy | Abrasion | taber, abrasion, abrasivity | Details |