3D DIC MEASUREMENT: CONCRETE STIFFENING

The course of concrete stiffening over time was measured using the X-Sight 3D DIC optical measuring system.

Initially, the mold for the measured sample was prepared and the X-Sight 3D system was placed in the correct position for measurement. A 3D calibration was performed using a calibration grid. Later, the concrete was mixed and poured into the mold. Immediately afterwards, a speckle pattern was applied to the concrete surface using a spray.

The measurement process was performed with Synchron, the external camera trigger developed by X-Sight. During the first 3 hours of the stiffening process, the cameras recorded one frame per minute. For the next 24 hours, the cameras recorded one frame per 5 minutes. After that, the cameras took one frame per hour for 10 days. Constant conditions were maintained over the course of the test.