Sustaining concrete structural integrity: a framework for defect identification and rectification methods

Abstract

One of the key issues that requires substantial attention in existing residential buildings is the occurrence of defects in their concrete structures. Flaws in the structural concrete of these types of buildings are frequently reported in numerous studies. If not rectified early, defects in concrete structures can lead to the collapse of these buildings. This study aims to develop a framework for understanding the identification and rectification methods of concrete defects in existing residential buildings. Thirty-three academic texts generated through a systematic literature review were utilised to collect qualitative data, and content analysis was carried out to meet the research objectives. The findings revealed that cracks are the most prevalent defect in concrete structures. Further, the review explored the most common non-destructive techniques such as the use of Schmidt hammer and ultrasonic for concrete defect detection. Moreover, rectification methods including epoxy treatment and concrete jacketing were identified. Finally, a framework that maps concrete defects with their identification and rectification techniques has been developed. The framework can help building inspectors, property managers, and other stakeholders involved in building maintenance to understand the alternative techniques for the identification and rectification of concrete defects.