본문내용 바로가기 주메뉴 바로가기 서브메뉴 바로가기
홈PUBLICATIONSResearch Project Report

Research Project Report

Research Project Report 상세보기
Supply Chain Management (SCM) Strategies of Construction Sand - Focusing the re-estimation of the value of sea sand -
Writer 최고관리자 Date 2019-03-05
Report No. 2018-13 Research Manager Eon Kyung, Lee

▸ According to the analysis of logistics process of sea sand, more than half of sea sand enters into Incheon port. This is because the construction volume is concentrated to metropolitan areas, while exclusive economic zones (EEZ) in the Yellow Sea are close to Incheon port.
- The logistics cost for transporting sea sand from extraction area to construction site accounts for approximately one third of the total production cost of extracting sea sand aggregate. Due to such a relatively high cost, most sea sand is supplied to neighboring areas of ports.
▸ Assuming that South Korea’s extracted quantity of sea sand per capita is considered 1, Japan stands at 0.15 and the US and the UK are around 0.6 level. What it means is that Korea’s dependency ratio of sea sand is quite high.
- This is because the quality of sea sand is good given its cost. In addition, it is easy to acquire sea sand since residents do not live in extraction areas, showing little resistance against environmental problems.
▸ According to a public survey targeting 700 people, respondents say that the price of sea sand should include the cost for recovering natural resources and ecosystems, compensation for the damage of fish stocks and resource value for future generations.
▸ Respondents of the survey said that dredged soil at ports and recycled aggregate should replace sea sand as alternative resources. Furthermore, most respondents said that changing construction methods and technological development are necessary to reduce the use of sea sand.
- 74.7% of survey respondents said that it is necessary to use recycled aggregate but only 50% said they are willing to live in a building made with them. Therefore, it is essential to relieve the public anxiety through quality and safety management of sand in the overall supply chain.
▸ The study estimated householders’ willingness to pay (WTP) for the government’s policy of reducing the extracted quantity of sea sand. The result shows that 1㎥ of sea sand has 35,041 won of non-market value on average, in addition to 15,000 won of market value.
▸ There are four strategies for enabling the smooth supply of alternative sand to respond to reduced quantity of sea sand;
- Construction methods for foundation construction in ports and earth sheltering works should be changed to the one using cement and gravel instead of using sand.
- It is necessary to replace sea sand with dredging soil, recycled sand, crushed stone and slag sand for various port constructions, such as reclaiming method, Caisson sealing method and ground improvement method etc.
- The quantity of sea sand used for ready mixed concrete should be reduced based on technological development of recycled aggregate, the establishment of management standards and systematic quality control.
- The environment for carrying imported sand into domestic ports should be improved by constructing a sand exclusive port with the capacity of 50,000 tons when certain conditions are met; reduced time for inspection and customs clearance, ship-to-ship loading and unloading and securing enough traffic volume.

Research Project Report 상세보기
Supply Chain Management (SCM) Strategies of Construction Sand - Focusing the re-estimation of the value of sea sand -
Report No. 2018-13 Research Manager Eon Kyung, Lee

▸ According to the analysis of logistics process of sea sand, more than half of sea sand enters into Incheon port. This is because the construction volume is concentrated to metropolitan areas, while exclusive economic zones (EEZ) in the Yellow Sea are close to Incheon port.
- The logistics cost for transporting sea sand from extraction area to construction site accounts for approximately one third of the total production cost of extracting sea sand aggregate. Due to such a relatively high cost, most sea sand is supplied to neighboring areas of ports.
▸ Assuming that South Korea’s extracted quantity of sea sand per capita is considered 1, Japan stands at 0.15 and the US and the UK are around 0.6 level. What it means is that Korea’s dependency ratio of sea sand is quite high.
- This is because the quality of sea sand is good given its cost. In addition, it is easy to acquire sea sand since residents do not live in extraction areas, showing little resistance against environmental problems.
▸ According to a public survey targeting 700 people, respondents say that the price of sea sand should include the cost for recovering natural resources and ecosystems, compensation for the damage of fish stocks and resource value for future generations.
▸ Respondents of the survey said that dredged soil at ports and recycled aggregate should replace sea sand as alternative resources. Furthermore, most respondents said that changing construction methods and technological development are necessary to reduce the use of sea sand.
- 74.7% of survey respondents said that it is necessary to use recycled aggregate but only 50% said they are willing to live in a building made with them. Therefore, it is essential to relieve the public anxiety through quality and safety management of sand in the overall supply chain.
▸ The study estimated householders’ willingness to pay (WTP) for the government’s policy of reducing the extracted quantity of sea sand. The result shows that 1㎥ of sea sand has 35,041 won of non-market value on average, in addition to 15,000 won of market value.
▸ There are four strategies for enabling the smooth supply of alternative sand to respond to reduced quantity of sea sand;
- Construction methods for foundation construction in ports and earth sheltering works should be changed to the one using cement and gravel instead of using sand.
- It is necessary to replace sea sand with dredging soil, recycled sand, crushed stone and slag sand for various port constructions, such as reclaiming method, Caisson sealing method and ground improvement method etc.
- The quantity of sea sand used for ready mixed concrete should be reduced based on technological development of recycled aggregate, the establishment of management standards and systematic quality control.
- The environment for carrying imported sand into domestic ports should be improved by constructing a sand exclusive port with the capacity of 50,000 tons when certain conditions are met; reduced time for inspection and customs clearance, ship-to-ship loading and unloading and securing enough traffic volume.

게시판 읽기
이전글 A Study on the Statistics of the Port Industry
다음글 A Study on the Governance Structure of Shipping Companies and the Relationship between their Business type and Performance