Detection method and detection device for temperature stress of external thermal insulation system

Abstract

The invention relates to a detection method and a detection device for temperature stress of an external thermal insulation system, belonging to the technical field of detection of thermal insulation materials. The detection method comprises the following steps: adhering a working strain gage and a temperature measurer of a temperature stress detection device to the surface of a to-be-detected material of an external thermal insulation system by using weather-proof glue; respectively adhering dummy gauges to the surface of compensating test blocks with material the same with that of the to-be-detected material, and arranging the compensating test blocks in a temperature environment the same with that to a to-be-detected thermal insulation system so as to compensate the measurement data of the working strain gage; and collecting data by using a data collector, reading strain data by using computer software connected with the data collector, and multiplying strain by elasticity modulus of the material so as to calculate temperature stress. According to the invention, the stress condition of related structural layer of the to-be-detected system along with change of environment temperature can be acquired, the reliability of the detection result is high, and basic data can be provided for development of correlation research, analysis on the change rule of stress of the external thermal insulation system in the condition of external temperature change, and research on adverse effect caused by temperature stress.

Description

technical field [0001] The invention relates to a temperature stress detection method and a detection device of an external thermal insulation system of an exterior wall, specifically for those with energy-saving requirements, such as XPS (extruded polystyrene board), EPS (polystyrene board), polyurethane board, and phenolic board. For the thermal insulation system of the external wall of the building as thermal insulation material, the temperature stress generated when it changes with the ambient temperature of use is detected. Background technique [0002] At present, my country vigorously advocates the construction of a resource-saving and environment-friendly society, and reducing building energy consumption has become an important link in energy conservation. With the in-depth development of building energy conservation work in our country, more and more attention has been paid to the thermal insulation of building walls. As materials commonly used in wall insulation s...

AI Technical Summary

Problems solved by technology

Since the temperature stress generated by the thermal insulation system is an internal stress, and the stress relationship between materials is complicated, the temperature stress detection of the external wall thermal insulation system of buildings has been a difficult problem for a long time.

In the past, the temperature stress was generally only simulated and calculated, and the lack of experimental verification limited the research work.

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