Use of Primers as a Concrete Repair Method in Corroded Columns of Buildings Exposed to a Tropical Marine Environment—Influence on Adjacent Zones

As one of the state-owned enterprises (BUMN), PT Pelabuhan Indonesia III (Persero) Regional Jawa Timur has demanded to obtain the considerable revenues using the limited maintenance funds for port facilities. One of the roles of Engineering Division includes the availability of port facilities that support operation division, so it is necessary to check and maintain the facilities. In consequence, the estimated cost and time of project carried out effectively to mitigate the risk level in the future in order to achieve the main objectives. One of the biggest revenues in the port sector is on the quayside facility services, therefore, maintenance of these facilities needs to be prioritized. The final project provides an analysis of cost and time calculations using the method of repairing the retaining wall (L-Shape Concrete) and the CCSP (Coruggated Concrete Sheet Pile) method for repairing damage to Kalimas Kademeter Quayside 1200-1400 with damage length of 176 meters and width of 9 meters. Based on the observation of cost and time analysis, the estimated cost of using the L-Shape Concrete repair method is much cheaper than using the CCSP (Coruggated Concrete Sheet Pile) method, but the actual project period is much longer. Finally, the selection of repair methods can adjust to the necessity of cost and time aspects, as well as the methods of project.

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Degradation and Damage of Composite Materials in Marine Environment

Materials Science ◽

10.5755/j01.ms.26.3.22950 ◽

2020 ◽

Vol 26 (3) ◽

pp. 337-342

Author(s):

Goran VIZENTIN ◽

Goran VUKELIC

Keyword(s):

Mechanical Properties ◽

Composite Materials ◽

Marine Environment ◽

Critical Review ◽

Numerical Models ◽

Future Research ◽

Crucial Step ◽

Degradation Of Mechanical Properties ◽

Properties Of Composites ◽

Environment Influence

IIn spite the fact that composite materials have been in use in the maritime sector for over a half of century, classification societies regulations tend to limit the usage of composites at the larger scale. One of the reasons for such strict class rules is a lack of comprehensive analytical and numerical models representing the behaviour of composites in the sea environment. Understanding the process of degradation and damage of composite materials assisted by sea environment a crucial step in building such a model. This paper aims to give a critical review of the research advancements in assessments of the sea environment influence on the degradation of mechanical properties of composites with a special emphasis on developed models of processes containing water and moisture entering composite inner structure. The list of major references in the last five years is given and suggestions for future research are discussed.

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Occurrence and distribution of pharmaceutically active and endocrine disrupting compounds in Singapore's marine environment: Influence of hydrodynamics and physical–chemical properties

Environmental Pollution ◽

10.1016/j.envpol.2013.06.028 ◽

2013 ◽

Vol 182 ◽

pp. 1-8 ◽

Cited By ~ 105

Author(s):

Stéphane Bayen ◽

Hui Zhang ◽

Malan Manish Desai ◽

Seng Keat Ooi ◽

Barry C. Kelly

Keyword(s):

Marine Environment ◽

Chemical Properties ◽

Endocrine Disrupting Compounds ◽

Physical Chemical ◽

Endocrine Disrupting ◽

Environment Influence

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Petroleum in the Marine Environment

Chemical & Engineering News ◽

10.1021/cen-v058n033.p022 ◽

1980 ◽

Vol 58 (33) ◽

pp. 22

Keyword(s):

Marine Environment

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Miocene of the S.E. United States A Model for Chemical Sedimentation in A Peri-Marine Environment

10.1016/s0070-4571(08)x7031-1 ◽

1977 ◽

Keyword(s):

United States ◽

Marine Environment

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Spatial assemblage structure of shallow-water reef fish in Southwest Australia

Marine Ecology Progress Series ◽

10.3354/meps13445 ◽

2020 ◽

Vol 649 ◽

pp. 125-140

Author(s):

DS Goldsworthy ◽

BJ Saunders ◽

JRC Parker ◽

ES Harvey

Keyword(s):

Shallow Water ◽

Reef Fish ◽

Marine Environment ◽

Fish Assemblages ◽

Canopy Cover ◽

Reef Fishes ◽

Reef Fish Assemblage ◽

Reef Type ◽

Present Distribution ◽

Southwest Australia

Bioregional categorisation of the Australian marine environment is essential to conserve and manage entire ecosystems, including the biota and associated habitats. It is important that these regions are optimally positioned to effectively plan for the protection of distinct assemblages. Recent climatic variation and changes to the marine environment in Southwest Australia (SWA) have resulted in shifts in species ranges and changes to the composition of marine assemblages. The goal of this study was to determine if the current bioregionalisation of SWA accurately represents the present distribution of shallow-water reef fishes across 2000 km of its subtropical and temperate coastline. Data was collected in 2015 using diver-operated underwater stereo-video surveys from 7 regions between Port Gregory (north of Geraldton) to the east of Esperance. This study indicated that (1) the shallow-water reef fish of SWA formed 4 distinct assemblages along the coast: one Midwestern, one Central and 2 Southern Assemblages; (2) differences between these fish assemblages were primarily driven by sea surface temperature, Ecklonia radiata cover, non-E. radiata (canopy) cover, understorey algae cover, reef type and reef height; and (3) each of the 4 assemblages were characterised by a high number of short-range Australian and Western Australian endemic species. The findings from this study suggest that 4, rather than the existing 3 bioregions would more effectively capture the shallow-water reef fish assemblage patterns, with boundaries having shifted southwards likely associated with ocean warming.

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