Compressive strength is the core of concrete quality, and the standard stipulates the use of professional concrete pressure testing machines to determine the compressive test force under rated test force. Adopting hydraulic loading method and electronic force measurement, it has functions such as load digital display, loading rate display, maximum load holding, overload protection, and power-off data retention.

The following will introduce the test method and operating procedures for determining the compressive strength of concrete using a concrete pressure testing machine:

Before use, check whether the hydraulic oil in the oil tank is sufficient. And the preparation work before the operation, such as whether the oil pipe joints and fasteners are loose;

Connect the power supply of the press machine, turn on the computer, and enter the software interface.

Click on "Test Operation" and the pressure testing machine display will enter the test operation interface.

After preheating for 15 minutes, the operation sound of the oil pump should be checked for any abnormalities during the preheating process. If there is any abnormal sound, it should be promptly reported to the maintenance department for repair, and forced use is not allowed; If it is normal, conduct the experiment.

Place the sample with a clean surface and no visible defects at the center of the lower pressure plate, press the "down" button to lower the upper pressure plate to the point where it is about to come into contact with the specimen, adjust the force value to zero, and set the test parameters.

Click the 'Start' button to start the experiment.

After the completion of the test on one specimen, clean it and install the next specimen.

Upload experimental data and record it.

After the experiment is completed, turn off the main machine of the press and then exit the software to shut down the computer. Turn off the power of the press, wipe and clean the surface of the instrument.

Through the above experimental operations, an experimental report can be output. The report format can be designed according to user requirements, and there is specialized software for writing table templates that have been installed on the machine. The table provides manual filling boxes that can reflect the external conditions of the current experiment in the report. Randomly equipped with a color HP printer, it can directly print A4 sized reports and automatically store them.

The above is the entire process and method of measuring the compressive strength of concrete using a pressure testing machine, which has a guiding role in guiding the mechanical properties of concrete