New Photo-Mechanics Technique Of Health Monitoring And Diagnosis For Concrete Structures

It's exigent of the study on the technique of diagnosis, maintain andreinforce for construction whereas the using of concrete in civil engineeringand the actuality of existing construction. In this thesis, new technique oflong time monitoring and health diagnosis for concrete structures is putforward act according to actual circumstances by importing ofphoto-mechanics methods in health monitoring and diagnosis system. New photo-mechanics technique of health monitoring and diagnosis forconcrete structures was presented and auto-processing program forphotoelastic image is developed also. Concrete structures can be monitoredand diagnosed continuously in all its life by this technique. This work offersa new effective method and opens a new road for the health monitoring anddiagnosis of concrete structures. Dissimilar photoelastic long-validity sensors were designed andmanufactured for different concrete structures(newly-built or existing). Itcan be true of the characteristic of concrete and the long time monitoringand diagnosis for concrete structures because of its logical buildup,adjustable size,good durability, handy build in and low cost. Photoelastic technique of monitoring and diagnosis for concretestructures was studied by model experiments using the homemadephotoelastic sensors. The results show it's a feasible technique. Photo-mechanics technique can also be banded together with core-drilling method.It not only has the intuitionistic and dependable advantage of core-drillingtesting, but also photo-mechanics method can be applied for longtimemonitoring of concrete structures. The existing stress in concrete structures is one of the most importantparameters to represent the condition of the structure. DICM was usedfirstly for testing the actual stress of concrete structures based oncore-drilling method. It can provide a dependable basis for monitoring 2ABSTRACTmanage and maintain of concrete structures. Aimed at the status quo and trend of concrete structures strengthened,ESSPI is firstly introduced into the study on the interface performance ofconcrete structures reinforced with CFRP. Different loading methods wereused to test the bond quality between CFRP and concrete. It will offer a newway for non-destructive diagnosis of concrete structures.