Structural Health Monitoring (SHM) is a crucial scope of work in civil engineering specifically on
monitoring the in-service and ageing coastal bridge deck concrete structure serviceability and limit
state status performance. One of the possible natural process that pose detrimental effects to such
structure performance monitoring is the steel rebar pitting corrosion problem. Progressive pitting
corrosion process on the certain steel rebar area in low quality of concrete cover due to chloride
ingression will cause local premature damage the steel rebar which obviously affect the serviceability
performance of the structural element, i.e. displacement. However, the available displacement
monitoring methods become an issue when it comes to engineering practicality and costs
considerations. Therefore, the purpose of this study is to monitor and analyze the vertical
displacement of an undamaged and damage reinforced concrete beam using the digital signal
processing technology, Digital Image Correlation, (DIC) that use Sony camera and MATLAB scripts,
and compared to a traditional method, Linear Variable Displacement Transducer (LVDT) at two
points bending tests setup. It was concluded, that the quantified displacement for corrosion-damage
RC via DIC method is higher than the normal reinforced concrete beam by 2 to 46 percent of error to
LVDT measurements. Based on two tailed paired t-test analysis, DIC method was concluded to be as
good as the LVDT method of measuring the beam’s displacement. The developed method has the
potential implementation on monitoring the any beam deflection on current real civil engineering
related projects.