EVALUATING STUCCO PERFORMANCE AFTER RESTORATION BASED ON SURFACE HARDNESS AND ADHESION TESTS

Abstract

In recent years, restoration of historical building is becoming a concerned issue in many countries. This has prompted the search for standards and methods of evaluating the performance of the building components after restoration. In Singapore, the current restoration procedures and test methods are vague and, together with the lack of regulations and codes, there is a need for a more defined approach. This study was conducted to identify suitable test methods for stucco performance evaluation. A literature review of consideration for stucco restoration and the properties of the stucco were carried out. The common defects and testing methods for the stucco were explored as well. A field experiment consists of two types of tests, adhesion tests and surface test hardness would be deployed on three different types of stuccos to determine the stucco performance of a historical building. The result shows that surface compressive tests method serves as a more suitable method than the adhesion test of the historical building and there is minimal or no correlation between the surface compressive and adhesive test results.