Interface Resistance between Carbon Fiber and Cement

AbstractThe interface resistance between carbon fiber and cement was studied by single fiber pull-out testing. The variation of electrical resistance between fiber and matrix with displacement was obtained. Single fiber electromechanical testing was also conducted by measuring the electrical resistance under static tension. Comparison of the results shows that the interface resistance increasing during single fiber pull-out is mainly due to the changes at the interface. The interfacial shear stresses cause the change of interfacial structure, which produce an effect on conductive network of the complex, and lead to the change of interface resistance between fiber and matrix