The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Liu Yong-xiu - One of the best experts on this subject based on the ideXlab platform.
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Design Conception and Practice of Building Sheet Pile Wharfs in Deep Waters-Development of A New Structure of Covered type of Sheet Pile Wharf
Port Engineering Technology, 2020Co-Authors: Liu Yong-xiuAbstract:In view of the problem that sheet pile structures are only suitable for medium and small wharfs,Which has long been besetting the field of Marine Construction,semi-covered and whole covered sheep pile wharf structures have been researched and developed.When the sheet pile wharf for 20 000dwt ships was being reconstructed into a berth for 50 000dwt ships in Jingtang Port,the semi-covered sheet piles were used to reduce the earth pressure acting on the lower part of the original front piles and no anchorage and stays were used and the success had been gained.With the whole covered sheet pile structure,a deep-water berth was successfully built for accommodating ships of more than 100 000dwt.The design proved correct with the centrifgal model tests made in Nanjing Hydraulic Research Institute.Construction of covered sheet pile wharfs in deep waters.
A A Ramezanianpour - One of the best experts on this subject based on the ideXlab platform.
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assessment of service life models for determination of chloride penetration into silica fume concrete in the severe Marine environmental condition
Construction and Building Materials, 2013Co-Authors: Majid Safehian, A A RamezanianpourAbstract:Abstract In the last decades, the Persian Gulf region has experienced significant development in Marine Construction. But many RC structures are showing signs of deterioration, mainly due to the chloride-induced corrosion of reinforcement. The aim of this study is assessment of basic parameters in long term chloride penetration in severe Marine environmental condition. Therefore, five year-old concrete jetties were investigated depending on two parameters, (a) Construction method: in situ and precast, (b) exposure conditions: atmospheric, splash and tidal zones. Also some accelerated durability tests were performed on standard samples having similar concrete mixture. Finally, theoretical chloride penetration profiles and corrosion initiation time were estimated by four service life prediction models. Experimental results showed all concrete properties are complying with relevant durability requirements and micro-environment characterization has great influence on chloride penetration. In addition, the obtained results from service life models showed the existence of various uncertainties in parameters of chloride penetration.
Harmeet Singh - One of the best experts on this subject based on the ideXlab platform.
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Review on friction stir welding of magnesium alloys
Journal of Magnesium and Alloys, 2018Co-Authors: Kulwant Singh, Gurbhinder Singh, Harmeet SinghAbstract:Friction Stir Welding (FSW) is considered to be the most significant development in metal joining in last two decades. FSW has many advantages when welding magnesium or lightweight alloys. The Friction stir welding of magnesium alloy has many potential applications in major industries i.e. land transportation, aerospace, railway, shipbuilding and Marine, Construction, and many other industrial applications. Even magnesium alloys have been used in industrial equipment of nuclear energy as magnesium alloys have low tendency to absorb neutrons, sufficient resistance to carbon dioxide and excellent thermal conductivity. Recently, the research and development in FSW field and associated technologies have been developing rapidly worldwide. In this review article, the basic principle of friction stir welding and several aspects of friction stir welded magnesium alloys have been described. The current state of friction stir welding of magnesium alloys is summarized. In spite of this, much remains to be learned about the process and opportunities for further research are identified.
Luisa M. S. Borges - One of the best experts on this subject based on the ideXlab platform.
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Evaluating less-used timber species for Marine Construction
Proceedings of the Institution of Civil Engineers - Construction Materials, 2018Co-Authors: John R. Williams, Gervais S. Sawyer, Simon M. Cragg, John Icely, Jonathan Simm, Melanie Meaden, Luisa M. S. Borges, Graham P. MalyonAbstract:Naturally durable species of timber are used as an alternative to preservative-treated timber for Marine structures, but many species have not been evaluated for their potential for use in this env...
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Evaluating the potential of lesser used timber species for Marine Construction
2016Co-Authors: John R. Williams, Gervais S. Sawyer, Simon M. Cragg, John Icely, Jonathan Simm, Melanie Meaden, Luisa M. S. BorgesAbstract:Naturally durable species of timber are used as an alternative to preservative-treated timber for Marine structures, but many species have not been evaluated for their potential for use in this environment. EN 275 evaluates Marine borer resistance and specifies a 5-year test period: too long a period for screening tests to be economically viable. Furthermore, the test does not evaluate abrasion resistance. Novel fast-track screening methods were employed in this study to evaluate the Marine borer and abrasion resistance of eighteen lesser used timber species. Comparative resistance was assessed by comparing the feeding rates of Marine borers and abrasion resistance observed in candidate species against greenheart and ekki which were used as benchmark species. A number of lesser used species, originating from South America and West Africa, performed better than the benchmark species in laboratory tests and over an eighteen month exposure period in the sea. A number of species also performed comparatively well in abrasion trials although resistance to abrasion does not necessarily correlate with resistance to attack by Marine borers.
Majid Safehian - One of the best experts on this subject based on the ideXlab platform.
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assessment of service life models for determination of chloride penetration into silica fume concrete in the severe Marine environmental condition
Construction and Building Materials, 2013Co-Authors: Majid Safehian, A A RamezanianpourAbstract:Abstract In the last decades, the Persian Gulf region has experienced significant development in Marine Construction. But many RC structures are showing signs of deterioration, mainly due to the chloride-induced corrosion of reinforcement. The aim of this study is assessment of basic parameters in long term chloride penetration in severe Marine environmental condition. Therefore, five year-old concrete jetties were investigated depending on two parameters, (a) Construction method: in situ and precast, (b) exposure conditions: atmospheric, splash and tidal zones. Also some accelerated durability tests were performed on standard samples having similar concrete mixture. Finally, theoretical chloride penetration profiles and corrosion initiation time were estimated by four service life prediction models. Experimental results showed all concrete properties are complying with relevant durability requirements and micro-environment characterization has great influence on chloride penetration. In addition, the obtained results from service life models showed the existence of various uncertainties in parameters of chloride penetration.