| Summary: | 碩士 === 國立海洋大學 === 河海工程學系 === 83 === This study addresses on the feasibility, relibility and
applicability of the rebar corrosion detection of RC blocks by
using impact echo method and eletrochemical method. For this
investigation, two sets of RC blocks are under accelerated
corrosion by impressed anodic current.Using open circuit
potential method(OCP),direct current polarization method(DC),
alternative current impedance method(AC) and impact-echo method
to detect the rebar corrosion of RC blocks. Some results are
drawn from this study as followings: 1.The corrosive damage of
specimen can be evaluated from the comparison between analystic
method and relative amplitude.The DC method is under estimated
the phenomena of corrosive damage. 2. There is a linear
relationship between corrosion thickness and relative
amplitude. This can directly response the degree of corrosive
damage. 3.In the acceleration spectrum,if one makes some
reasonable assumptions and uses a suitable analytic process,
then the results of corrosive damage can be expressed in
quantities. The value of relative amlpitude after quantitative
analysis can directly response the degree of corrosive damage
of tested specimen.
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