• Computers and Concrete
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• v.19 no.5
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• pp.515-526
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• 2017

Recent trend is to use the lightweight concrete in the construction industry because it has several advantages over normal weight concrete. The Lightweight concrete can be produced from the industrial waste materials. In South East Asian region, researchers are very keen to use the waste materials such as oil palm shell (OPS) and palm oil clinker (POC) from the palm oil producing industries. Extensive research has been done on lightweight concrete using OPS or POC over the last three decades. In this paper the aggregate properties of OPS and POC are plotted in conjunction with mechanical and structural behavior of OPS concrete (OPSC) and POC concrete (POCC). Recent investigation on the use of crushed OPS shows that OPSC can be produced to medium and high strength concrete. The density of OPSC and POCC is around 20-25% lower than normal weight concrete. Generally, mechanical properties of OPSC and POCC are comparable with other types of lightweight aggregate concrete. It can be concluded from the previous study that OPSC and POCC have the noteworthy potential as a structural lightweight concrete.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2010.10a
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• pp.209-211
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• 2010

본 연구는 싱가폴 VTS의 현장을 직접 방문하여 파악한 시설현황과 제도를 위주로 기술하였다. 관제사의 선발 시스템 및 교육 훈련 제도가 어떻게 운용되고 있는지에 대해서도 알아보았다. 또한 현재 싱가폴 VTS에서 추구하고 있는 차세대 VTS에 대한 방향에 초점을 맞추어 우리가 벤치마킹할 요소들에 대해서 집중적으로 검토해보고 우리나라 VTS의 발전방향을 모색하여 보았다.