Sanchita Hiwrale,
Kunal Waghule,
Om Jahagirder,
Tejas Tirukhe,
Anuradha Kalamb,
Hashmi S. Mujahid,
- , Student, Department of Civil Engineering, Marathwada Institute of Technology Polytechnic Chhatrapati Sambhajinagar, Maharashtra, India, ,
- , Student, Department of Civil Engineering, Marathwada Institute of Technology Polytechnic Chhatrapati Sambhajinagar, Maharashtra, India, ,
- , Student, Department of Civil Engineering, Marathwada Institute of Technology Polytechnic Chhatrapati Sambhajinagar, Maharashtra, India, ,
- , Assistant Professor, Department of Civil Engineering, Deogiri Institute of Engineering and Management Studies, Chhatrapati Sambhajinagar, Maharashtra, India, ,
- , Assistant Professor, Department of Civil Engineering, Deogiri Institute of Engineering and Management Studies, Chhatrapati Sambhajinagar, Maharashtra, India, ,
- , Chartered Engineer, Infinity & Associates, Chhatrapati Sambhajinagar, Maharashtra, India, ,
Abstract
The structural integrity and serviceability of existing structures may deteriorate over time due to aging, environmental exposure, material degradation, overloading, inadequate maintenance, and repeated operational stresses. Early identification of structural deficiencies is essential for preventing progressive damage and ensuring safe and reliable performance throughout the service life of a structure. This study presents a systematic structural condition assessment of an existing structure using visual inspection and non-destructive testing (NDT) techniques. Ultrasonic pulse velocity (UPV) and rebound hammer tests were employed to evaluate the quality and relative strength of concrete without causing significant damage to structural components, following the provisions of IS 13311 (Part 1 and Part 2). Visual observations were also carried out to identify surface deterioration, including cracks, corrosion-related distress, spalling, and other visible defects. The collected NDT results were analyzed to identify variations in concrete quality and to determine structural elements requiring further investigation. The assessment indicated localized deterioration in several structural components, with Column 10 exhibiting comparatively lower strength and requiring particular attention. Based on the observed condition and test results, appropriate recommendations for repair, rehabilitation, strengthening, and continued monitoring were proposed. The study demonstrates the effectiveness of combining visual inspection with NDT techniques for detecting potential structural weaknesses at an early stage. The proposed assessment approach can support condition-based maintenance and improve structural reliability, durability, and service life. The findings are particularly relevant to offshore and marine-exposed structures, where environmental deterioration and limited accessibility can significantly influence long-term structural performance and safety.
Keywords: Structural audit, non-destructive testing (NDT), ultrasonic pulse velocity (UPV), rebound hammer test, concrete strength, visual inspection, building maintenance, IS:13311, structural integrity
[This article belongs to Journal of Offshore Structure and Technology ]
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Journal of Offshore Structure and Technology
| Volume | 13 | |
| Issue | 02 | |
| Received | 30/07/2026 | |
| Accepted | 07/08/2026 | |
| Published | 11/09/2026 | |
| Publication Time | 43 Days |