| Summary: | 碩士 === 國立中央大學 === 土木工程研究所 === 98 === The scope of this research are: (1) investigate the influence of ALMT on the rebar and the bond strength between rebar and concrete; (2) ALMT system impedance to analyze the reasons, and research suppression strategy; (3) assessment of specimen length on the power effectiveness of the impact; (4) discussed ALMT feasibility of practical applications.
Test result showed ALMT increased compressive strength of concrete, and the bond strength of steel. If the rebar was used as cathode will cause additional secondary rebar brittle and the increase in the steel around the Na+ and K+ concentration around reinforced concrete ASR may worsen the harm. ALMT applications occurred to dramatic increase in system impedance, the reason is because the CO2 in the air integrated into the formation of CO32-, and concrete in the calcium-binding, forming insoluble calcium carbonate block pores, effectively block air integration into the cathode tank, periodic replacement of the cathode electrolyte tank, and add calcium hydroxide of excessive to consumption the CO2 in the cathode tank, effectively prevent the dramatic increase in the occurrence of system impedance. When the specimens with different lengths of the constant voltage and the constant current. Use constant voltage mode of ion transport less effective. Assess ALMT the effectiveness of cationic uniform, used in the concrete surface along with planar electrodes, is better than drilling holes in concrete of the electrode rod.
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