1. Applications

This concrete compressive strength testing machine is to determine compressive strength of cylindrical concrete specimens and cubic concrete specimens by applying a compressive axial load to molded cylinders or cubic at a rate which is within a prescribed range until failure occurs. The compressive strength of the concrete specimen is calculated by dividing the maximum load attained during the test by the cross-sectional area of the specimen.

2.test method

GB/T 2611 testing machine General technical requirements

GB/T 3722 hydraulic pressure testing machine

GB/T 16825.1 Inspection of static single-axis testing machines - Part 1 : Examination and calibration of force measuring systems for tensile and compression testing machines

ISO 7500-1 metallic materials-verification of static uniaxial testing machines- parts 1: tension/compression testing machines-verification and calibration of the force-measuring system

ASTM E 74 practice of calibration of force-measuring instrument for verifying the force indication of testing machine

ASTM E4 Standard practice for force verification of testing machines

GB/T50081-2002 "Test methods for mechanical properties of ordinary concrete"

GB/T 4111 test method for the concrete block and brick

GB/T 11837 concrete compressive strength test method for concrete pipes

AASHTO T22 compressive strength of cylindrical concrete specimens

BS 1881 testing concrete

ASTM C39/C39M standard test method for compressive strength of cylindrical concrete specimens

EN 12390-3 testing hardened concrete- part 3: compressive strength of test specimens

ISO 1920-4 testing of concrete-part 4: strength of hardened concrete

3. Software for concrete compressive strength test

3.1 Windows based interface, easy and fast to reach different functions, suitable for most of operators using habits.

3.2 The software provides multi functional control mode: Load (stress) control; Displacement (Stroke) control, Strain (Deformation) control, Load keeping, Displacement keeping, Customized programming control ect.

3.3 In stroke control mode, operator can define customized test speed to conform to different test standard. Preset limit position and return position will secure the safety and return the crosshead automatically after test finished. In program control mode, the testing machine is controlled by conditional programs, operator can input each condition to regulate test process, and software can realize constant parameter control through this function.

3.4 Realize the testing diagram online display and reproduction.

3.5 Zoom in or out the test diagram at any place with any rate.

3.6 Auto suit the diagram according to display resolution

3.7 Coordinates point tracing to check the test results in each point

3.8 The software provides different way to create test report: Single material test report, Batch material test report, Customized test report, Coordinates point test report

3.9 test curves: load-time, extension- time, load-displacement, load-extension, stress-strain,etc

4. Specifications for concrete compressive strength testing machine