• Mohit M. Patil
• Dr S.A. Rasal

This study investigates the structural health of a 27-year-old jetty structure located at Jawaharlal Nehru Port Trust in Navi Mumbai, India. The assessment aims to determine the structure's adequacy under current service loading conditions and propose remedial measures if necessary. Various factors affecting the structural deterioration of the jetty, such as exposure conditions, oceanographic conditions, salinity, ballast water contamination, and wind velocity, are considered. The assessment primarily focuses on the corrosion of reinforcing steel embedded in the concrete, as it plays a crucial role in the structural integrity of the jetty. To evaluate the extent of deterioration and distress in the concrete beams, a comprehensive condition assessment is conducted. This includes tests such as the Rebound hammer test, Ultrasonic pulse velocity test, and compressive strength analysis of core samples. Jetty beams are analyzed to obtain a statistically significant sample size. The test results are classified into different categories based on the geometry and loading pattern of the beams. Statistical analysis reveals a highly significant difference in the distress condition between the crane beam and the secondary beam/main beam. The crane beams, subjected to dynamic loads from cargo-loading cranes, exhibit greater distress compared to other beams, despite similar distress-causing factors affecting all beams. The findings indicate that the ingress of saline environment through fissures and cracks in the concrete cover contributes to the deterioration of the jetty structure. Based on the results, it is concluded that the crane beams require specific attention and remedial measures due to their higher distress levels. The study emphasizes the importance of considering various parameters in assessing the structural health of a jetty and determining its residual service life. The outcomes of this study can guide the formulation of appropriate strengthening and rehabilitation schemes for the jetty, ensuring its ability to withstand present and future loading conditions. By understanding the structural condition and implementing necessary measures, the longevity and safety of the jetty can be ensured for continued operational efficiency.

structural deterioration, jetty, exposure conditions, distress, Rebound hammer test, Ultrasonic pulse velocity test.

"STRUCTURAL HEALTH ASSESSMENT AND REMEDIAL MEASURES FOR AN EXISTING JETTY STRUCTURE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 7, page no.d177-d184, July-2023, Available :http://www.jetir.org/papers/JETIR2307323.pdf

"STRUCTURAL HEALTH ASSESSMENT AND REMEDIAL MEASURES FOR AN EXISTING JETTY STRUCTURE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 7, page no. ppd177-d184, July-2023, Available at : http://www.jetir.org/papers/JETIR2307323.pdf