EXPERIMENTAL STUDY ON UNIAXIAL COMPRESSION PROPERTIES OF CEMENT MORTAR SPECIMENS AFTER HIGH AND LOW TEMPERATURE CYCLING
In order to study the mechanical properties of cement mortar after high and low temperature cycling,the cement mortar specimens were subjected to high temperature cycling at different temperatures,and then subjected to uniaxial compression tests to study the effects of high temperature cycling times and temperature on the uniaxial compressive properties of the specimens after high temperature cycling.The research results indicate that:(1)After being subjected to high temperature at the same temperature,the uniaxial compressive strength of the specimen gradually decreases with the increase of the number of cycles,while the variation rule of the peak strain of the specimen is not fixed.When subjected to the same number of cycles of high temperature,the compressive strength of the specimen gradually decreases with the increase of high temperature.(2)When the water cement ratio of the specimen is the same and the specimen undergoes three high-temperature cycles at different temperatures,and the temperature of the first high-temperature is the same,the uniaxial compressive strength of the specimen gradually decreases with the increase of the second high-temperature temperature,and the peak strain of the specimen gradually increases.
high and low temperature cyclingcement mortarcompressive strength
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