Measuring device for early-aged cement-based material thermal expansion coefficient under different environmental conditions and measuring method

Abstract

The invention discloses a measuring device for early-aged cement-based material thermal expansion coefficient under different environmental conditions and a measuring method, wherein the measuring device includes a seal test box with the heat-insulating and the moisture-holding functions, a sliding trolley, a humidifier, a heater, a light energy source, a test box inside humiture sensor and a test piece inside humiture sensor are arranged in the seal test box; laser displacement meter terminals are arranged at the two ends of the sliding trolley; laser displacement meters matched with the laser displacement meter terminals for use are arranged outside the seal test box; and a humidifier controller used for controlling the humidifier, a heater controller used for controlling the heater, and a light energy source light energy quantity automatic controller used for controlling the light energy source are also arranged outside the seal test box. Through adopting the device, the linear deformation measurement can be performed after the cement-based material has slight plasticity, and the thermal expansion coefficient of the early-aged cement-based material under a certain temperature, relative humidity and sun radiation can be measured.

Description

technical field [0001] The invention relates to a device and method for measuring the coefficient of thermal expansion of cement-based materials at an early age under different environmental conditions. High-precision measurement of early-age thermal expansion coefficient under radiation conditions. Background technique [0002] At present, the research on the thermal expansion coefficient of cement-based materials is not in-depth, mainly because the thermal expansion coefficient of cement-based materials cannot be measured with high precision under certain temperature, relative humidity and solar radiation conditions. Therefore, it is necessary to accurately measure the early-age thermal expansion coefficient of cement-based materials under certain environmental conditions, and to design a measuring device and method for measuring the early-age thermal expansion coefficient of cement-based materials. Contents of the invention [0003] The technical problem to be solved b...

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Problems solved by technology

[0002] At present, the research on the thermal expansion coefficient of cement-based materials is not in-depth, mainly because the thermal expansion coefficient of cement-based materials cannot be measured with high precision under certain temperature, relative humidity and solar radiation conditions.

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