Standard Vicat device for automatically measuring setting time and operation method thereof

Abstract

The invention discloses a standard Vicat device for automatically measuring the setting time and an operation method thereof. The standard Vicat device comprises an operation box, a setting time display, an infrared light emitter, an infrared light receiver and a test mold, wherein the test mold is arranged on the operation box; a test needle is arranged above the test mold and is connected with the setting time display; the infrared light emitter and the infrared light receiver are arranged on two sides of the test needle; the infrared light emitter, the infrared light receiver and the test needle are positioned on a same plane; photo-diodes are arranged on the infrared light receiver; and the infrared light emitter is movable and can drive the photo-diodes to generate a current change. The standard Vicat device for automatically measuring the setting time and the operation method thereof, disclosed by the invention, have the benefits that the infrared light emitter, the infrared light receiver and other photoelectric converters can be used for photoelectric conversion; through a change in current magnitude, a timer automatically times and accurately reads the setting time withoutsite timing; the artificial interference in a laboratory temperature field and other environmental factors is also reduced; the operation is simple and quick, and the measurement precision is high.

Description

Technical field [0001] The invention belongs to the technical field of material testing instruments, and specifically relates to a standard Vicat device for automatically measuring the setting time and an operation method thereof. Background technique [0002] Vicat device is a kind of testing instrument for cement and concrete industry, also called cement consistency setting time tester, mainly used to test the standard consistency water requirement and setting time of cement paste. The traditional standard Vicat device to measure cement setting time has strict requirements for the measurement, and the scale reaches the centimeter level, and the experiment usually takes a long time. The initial setting time is usually tens of minutes, which indirectly leads to accidents caused by human factors. Increase in error. Moreover, when using the traditional standard Vicat device to measure the setting time of cement, it is measured every five minutes near the initial setting, every 15 ...

AI Technical Summary

Problems solved by technology

The traditional standard Vicat device to measure the setting time of cement has strict requirements on the measurement, and the sub-scale reaches the centimeter level, and the experiment usually takes a long time. The initial setting time is usually tens of minutes, which will indirectly lead to accidental errors caused by human factors. increase in error

Moreover, when using the traditional standard Vicat device to measure the setting time of cement, it is measured every five minutes near the initial setting, every fifteen minutes near the final setting, and re-tested immediately when the initial setting is reached. This is not only a cumbersome measurement process, but also It brings inconvenience to the operator and takes a long time, which affects the progress of the experiment

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