Cyclic Tensile and Cyclic Tension Compression Properties of Wet-Screened Concrete
To investigate the damage process and crack evolution of wet screened concrete under the action of cyclic tensile and cyclic tension compression,the cyclic tensile tests and cyclic tension compression tests of concrete specimens with loading rates of 1,10 μm/(m·s)were carried out by acoustic emission(AE).The results show that the speciments of the unloading and reloading stiffness decreases with the increase of the cycle times,and the plastic strain increases with the cyclic loading.When the displacement reaches 0.1 mm,the load displacement curve of the specimen is approaching the softening stage,and then the crack development speed decreases,and the damage index decreases.In the process of cyclic loading,with the increase of the displacement,the AE accumulative ring counts and the cumulative numbers of hit basically increase in a step pattern.
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