TY - Data T1 - Data set of research on thermal expansion performance of concrete under three-dimensional stress state A1 - None DO - 10.12072/ncdc.nieer.db2792.2023 PY - 2023 DA - 2023-04-27 PB - National Cryosphere Desert Data Center AB - <p>&emsp;&emsp; The concrete structure of underground works brings many conveniences for people's life and travel, but it also has certain hidden dangers. In case of fire, due to the high temperature, the concrete will produce thermal expansion deformation and thermal expansion stress, which will affect the safety and stability of the structure and threaten the normal operation of equipment and the life safety of personnel. Therefore, it is of great significance to study the thermal expansion coefficient of concrete under high temperature. This data set is based on the real-time high temperature true triaxial test system independently developed by Wuhan Institute of Geotechnical Mechanics, Chinese Academy of Sciences. Considering that the test is carried out within the range of 0.5MPa three-dimensional stress and 600 ℃, 100, 200, 300 and 400 temperature levels are selected for the test, mainly recording the three-dimensional thermal expansion strain of concrete at different temperatures under the three-dimensional stress state. DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/45062824-f814-448c-a323-14c95f68036c ER -