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《Sichuan Building Science》 2013-01
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Experimental research on self-monitoring and self-repairing of concrete bridge

GUO Dianjun(Liaoning Academy of Traffic Sciences,Taiyuan 030006,China)  
By the self-monitoring and self-repairing experiment to the concrete bridge beams along the length of the beam SMA(shape memory alloys) is embedded into.The relationship between the structural deformation of concrete beam and change of the SMA resistance was simulated and analyse when structural was metamorphosing.When,according to the beam embedded forecastly in the SMA implemented the corresponding voltage incentive.With the increase of temperature of alloy wire,martensite phase changed into austenitic phase.At the same time,the state of the plastic deformation disappeared.Under the current,becausing of restore power working to the concrete structure,structure deformation resumed.The self-healing and emergency self-repair of cracks in concrete structure came true.
【CateGory Index】: U446
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