Full-automatic cement-based material convergent-divergent performance tester and control method thereof

Abstract

The invention discloses a full-automatic cement-based material convergent-divergent performance tester and a control method thereof. The tester consists of a singlechip, a humiture control system, a parameter setting system, an automatic positioning and locking system, a measurement system and a display system, and mainly comprises a heat insulation rigid box body, an electromagnetic locker, a heater, a semiconductor refrigerating fin, an ultrasonic humidifier, a humiture sensor, a positioning and locking device and a three-dimensional measurement device; the singlechip controls each system to operate compatibly, so that the test conditions can be controlled automatically and precisely, the automatic multi-point layering circulation measurement is realized, and the humiture and the relevant curve graph can be displayed dynamically in real time. The technical problems of difficulty in guaranteeing the testing conditions, top alignment difficulty, heavy workload, multiple personal error sources and capability of only measuring by a single point in testing the sulfate-resistant divergent performance of the traditional cement-based material are solved. The full-automatic cement-based material convergent-divergent performance tester and the control method thereof, which are provided by the invention, also can be used for tests of a cement mortar air shrinkage test, a concrete convergent-divergent test, a concrete swelling performance test and the like.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a fully automatic cement-based material shrinkage and expansion performance testing machine and a control method thereof. Background technique [0002] Sulfate attack is an important factor affecting the durability of concrete, and it is also the most complex and harmful environmental water attack among the destructive factors. The concrete structures in the surrounding environment of the Qinghai Lake area, due to the erosion of sulfate, are basically "powdered in one year and collapsed in three years; there are large areas of saline-alkali land in Tianjin, Hebei, Shandong and other provinces and cities, and the concrete structures in these places are often Due to sulfate erosion, "baked roots" are produced; in the vast western region, due to sulfate erosion and other effects, cement poles buried in saline soil areas have longitudinal cracks after one year, and longitudinal ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a fully automatic cement-based material shrinkage-expansion performance testing machine and its control method, which solves the problems encountered in the measurement of the specimen expansion rate in the current concrete (cement-based) sulfate resistance test. Under the temperature and humidity conditions that meet the requirements of the test specifications, it can automatically measure the deformation of the test specimen in multi-point layers and display it dynamically in real time.

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