Condition Assessment of Marine Structures Using Functional Condition Index Approach

Sallehuddin Shah Ayop, and Rosli Mohamad Zin, and Mohammad Ismail, (2006) Condition Assessment of Marine Structures Using Functional Condition Index Approach. Malaysian Journal of Civil Engineering, 18 (2). pp. 129-138.

Preview

PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
167Kb

Affiliations

Kolej Universiti Tun Hussein Onn, Faculty of Engineering,
Universiti Teknologi Malaysia, Faculty of Civil Engineering,
Universiti Teknologi Malaysia, Faculty of Civil Engineering,

Abstract

Marine structures are subjected to damage and deterioration during their service life because of continuous exposures to aggressive environment. As a result the performance and the intended functions of the structure are affected. This paper presents the development of a condition assessment system for assessing the status of concrete marine structures in Malaysia. The assessment system is based on the Condition Index (CI) method developed by the U.S Army Corps of Engineers. The assessment took into account the level of deterioration observed during inspection work. The Functional Condition Index (FCI) approach was used to calculate the CI of the structure. Field data through visual inspection on concrete wharf structure was collected. Three types of deterioration were considered in the assessment: (1) corrosion of reinforcement, (2) cracking, and (3) spalling of concrete surface. The results show that the calculated CI values based on the proposed method is relatively close to the expert opinion values. The condition assessment system based on the CI method is found to be reliable and efficient hence can be used to monitor the performance of marine structures in Malaysia.

Struktur marin akan mengalami kerosakan dan kemerosotan semasa hayatnya akibat terdedah kepada persekitaran agresif yang berterusan. Kerosakan dan kemerosotan boleh mendatangkan kesan ke atas prestasi dan kegunaan struktur tersebut. Kertas kerja ini membentangkan pembangunan satu sistem penilaian status struktur konkrit marin di Malaysia. Pembangunan sistem ini merupakan satu langkah ke arah perlaksanaan penyenggaraan terancang. Sistem penilaian keadaan yang dicadangkan adalah berdasarkan kaedah Indeks Keadaan yang telah dibangunkan oleh U.S Army Corps of Engineers. Penilaian keadaan yang dibuat mengambil kira tahap kemerosotan yang diperhatikan semasa kerja pemeriksaan. Kaedah Indeks Keadaan Berfungsi digunakan untuk menentukan Indeks Keadaan struktur. Data di lapangan melalui pemeriksaan visual ke atas struktur konkrit dermaga telah dikumpulkan. Tiga jenis kemerosotan dipertimbangkan dalam penilaian iaitu: (1) pengaratan tetulang; (2) keretakan dan (3) serpihan pada permukaan konkrit. Keputusan menunjukkan nilai Indeks Keadaan berdasarkan kaedah yang dicadangkan secara relatifnya adalah hampir dengan nilai yang ditentukan oleh penilai pakar. Sistem Penilaian Keadaan bedasarkan Indeks keadaan didapati boleh diterima dan boleh digunakan secara efektif dan berkesan untuk memantau prestasi struktur marin di Malaysia.

Item Type:

Journal

Additional Information:

The authors would like to thank RMC and UTM for the financial support of this study, and the management of Kuantan Port, Penang Port and Klang Port for their cooperation and encouragement

Keywords:

Condition Assessment System; Condition Index; Concrete Deterioration; Corrosion of Reinforcement; Marine Structures; Expert Opinion. Sistem Penilaian Keadaan; Indeks Keadaan; Kemerosotan Konkrit; Pengaratan Tetulang; Struktur Marin; Penilaian Pakar

Subjects:

T Technology, Engineering

ID Code:

6477