Deformation and failure characteristics of carbon fiber reinforced concrete in harsh environment
In order to study the deformation and failure characteristics of carbon fiber concrete in harsh environment(sulfate erosion environment),concrete specimens containing carbon fiber(1.0％of cement mass)were prepared,and variable amplitude cyclic compression tests were carried out.The results show that with the increase of dry-wet cycle,the specimen does not immediately show a clear trend of deterioration.The ability to resist cyclic compression increases before 60 times of dry-wet cycle,and then begins to decrease.After 150 times of dry-wet cycle,the ability to resist deformation and failure is basically lost.The failure of the specimen under cyclic loading is a process of gradual accumulation of compaction damage and energy dissipation,and the increase of dry-wet cycle period will gradually increase the conversion rate of dissipated energy,and finally change the energy storage mechanism of the specimen.A damage model based on cumulative residual strain and considering initial damage is established.The model can reflect the damage evolution law of carbon fiber concrete under sulfate attack environment,and has certain reference value.
carbon fiberconcretesulfate erosiondeformation and failurecyclic compression
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维普
