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.       Size of concrete specimens for compression strength test

Concrete cubic specimen: 150X150X150mm, 100X100X100mm, 200X200X200mm

Cylindrical concrete specimen: φ150X300mm, φ100X200mm, φ200X400mm

3.       Brief introduction of concrete compressive strength test procedure

1)       Placing the concrete specimen---place the test specimen on the lower bearing block. Carefully align the axis of the specimen with the center of thrust of the spherically seated block.

2)       Apply the load continuously and without shock until the specimen fails and record the maximum load carried by the concrete specimen during the test. Note the type of failure and the appearance of the concrete.

4.       Software for concrete compressive strength test

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

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

4.3 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.

4.4 Realize the testing diagram online display and reproduction.

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

4.6 Auto suit the diagram according to display resolution

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

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

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

5.       Relative test method

GB/T 50081 standard for test method of mechanical properties on ordinary concrete

ASTM C39 standard test method for compressive strength of cylindrical concrete

ASTM E74 practice of calibration of force-measuring instruments for verifying the force indication of testing machine

6.       Specifications for concrete compressive strength testing machine

Max. capacity: 3000KN( lower or higher capacity can make to order)

Grade of testing machine: grade 1

Distance between upper and lower compression platen: 320mm

Stroke of piston:50mm

Size of upper and lower compression platen:375X375mm

Weight :about 900kg