A Study On Confection, Mechanics And Electricity Of The Carbon-fiber-reinforced Concrtet

In the dissertation, the Study on carbon fiber reinforced concrete (CFRC) and plain concrete has been reviewed. Then mechano-electric effect of CFRC and plain concrete, its mechanisms,the interaction among mechano-electric effect. Also the converse effect of mechano-electric effect of CFRC and plain concrete,that is, electricmechanical effect is examined. At last,the application of mechano-electric effect on smart concrete structures is discussed.The stress induced electrical current changes with stress changing.The sensitivity of CFRC and plain concrete depends on their component, loading condition and the method of measurement. The study on mechano-electric effect of hardened cement paste provides a new Method to make smart concrete structures.According to nonequilibrium thermodynamics, a mathematical model on The relatrionship between strain gradient and electric potential gradient is presented. The electrically induced strain is observed in both CFRC and plain concrete. Compared with plain concrete,CFRC demonstrates more sensitive to the outward Electric field.That is,CFRC can produce the same strain as plain cement paste with smaller voltage.lt can sense impact taking advantage of electric emission.