Introduction to the precautions of concrete shrinkage dilatometer

The flexible transmission system drives the operation to be more stable, the test accuracy is higher, the microcomputer control, the operation is all keyboardized, the quantitative analysis of the slip state of the material and the quantitative analysis of the test results between the samples, the dynamic friction test, the static friction test, the dynamic and static friction test Free choice, flexible testing, concrete shrinkage dilatometer can perform statistical analysis and processing of single-piece and group test results, micro-output of multiple report modes, save 6 test data and results, and have necessary functions such as curve display and query. . Place the left end of the standard rod in the groove of the positioning post, the lower plane of the standard rod shelf is close to the reference surface of the base, and then slowly push the other end of the standard rod into the center of the instrument to slowly insert the dial indicator. In the adjustable column hole you selected, make the dial gauge probe in contact with the right end of the par, and then tighten the set screw to position the dial gauge on the instrument. Read the scale of the dialect at this time.

The concrete shrinkage dilatometer should be placed on a flat workbench. The four feet should be evenly stressed. Avoid three points of force to prevent the deformation of the instrument and affect the accuracy. The standard rod is the base length unit of the instrument. To prevent deformation, the dial indicator is a precision part. The test piece should be light and steady when placed and removed. Do not hit the table frame and the watch rod. After each use, apply a little lubricant to the surface of the non-painted part. The surface of the movable part is coated with instrument oil. Volume changes are also accompanied by shrinkage of the concrete when it hardens in the air. When hardened in water, the concrete does not change in volume or produces very slight expansion. Concrete shrinkage dilatometer is mainly used to determine the thermal expansion coefficient of ceramics, refractory materials and other solid materials, especially corundum, refractory materials, casting shells and core materials. It has the features of automatic, easy to test, easy to operate, data printout, experimental data archiving, database rich, easy to modify and search, etc. It provides modern testing methods for the performance and scientific research of ceramic and refractory products tested by factories and research institutes. .