Abstract
Direct exposure to marine environment causes accelerated corrosion process of all reinforced concrete structures, consequently, causes cracks, deterioration and overall reduction in the sstructural integrity. The aim of this paper is to study the deterioration and technique of repair work at Eagle Square as a landmark of Langkawi Island. Most of the structural problems which occurred at the splash zone were spalling and delamination on beam, slab and pile cap. Material testing was carried out at selected locations to ob tain detailed information relating to the extent and causes of deterioration of the structure. The result showed that the carbonation depth was smaller than concrete cover and the amount of chloride ions was 0.23% by mass of cement and 50% of the splash zone was having 90% probability of corrosion. After obtaining the necessary data, the study directed towards deciding the remedial work. The Eagle Square structure members were successfully repaired in eight (8) months with proper works planning and repair technique appropriate to the damages.
Highlights
Dataran Lang, known as Eagle Square, built in 1996, is a landmark located at the southeast corner of Langkawi Island
After 20 years the Eagle Square suffered the harmful damage at the structural members of the main sculpture platform
The marine environment conditions which are characterized by high sulphates, high conditions of chlorides, high temperature and relative humidity are the accelerating factors for the corrosion of steel reinforcement [1]
Summary
Dataran Lang, known as Eagle Square, built in 1996, is a landmark located at the southeast corner of Langkawi Island. After 20 years the Eagle Square suffered the harmful damage at the structural members of the main sculpture platform. The marine environment conditions which are characterized by high sulphates, high conditions of chlorides, high temperature and relative humidity are the accelerating factors for the corrosion of steel reinforcement [1] This severe corrosion of steel reinforcement causes wide cracks and spalling of concrete members at splash zone. Various international events are held at Eagle Square and draw tourist from all over the world. It was imperative, that the execution of remedial works must include proper planning, high standard of site cleanliness, minimal disturbance to the public and high level of safety of everyone in the vicinity.
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