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Basic Study on Development of Ultra-high Strength Grout for Offshore Wind Turbines

해상풍력 발전기용 초고강도 그라우트 개발을 위한 기초적 연구

  • Lim, Myung-Kwan (Dept. of Architectural Engineering, Hankyong National University) ;
  • Ha, Sang-Su (Dept. of Architectural Engineering, Kangnam University)
  • Received : 2015.02.12
  • Accepted : 2015.02.26
  • Published : 2015.02.28

Abstract

The annual average of energy sources is continuously increasing at a rate of 5.8%, and particularly, the power generation proportion of new/renewable energy is increasing significantly. Furthermore, South Korea has established a national energy master plan for 2008-2030 and is aiming at obtaining approximately 11% of total energy production from the wind turbine sector. Although offshore wind turbines are similar to wind turbines installed on land, they require materials with excellent dynamic properties and durability to prevent damage due to seawater at the lower parts and connecting parts. The lower parts of wind turbines are submerged in seawater, and the upper and lower parts are connected by filling the connecting part with grout. This paper describes the test results of the process of determining the mix ratios to develop ultra-high grout for offshore wind turbines. There is virtually no relevant technology regarding grout for offshore wind turbines in South Korea that can be referenced for the process of determining the mix ratios. Therefore, tests were conducted for determining compression strength, elastic modulus, flexural strength, density, constructability (floor test), and early strength by referencing a high-performance grout produced in South Korea, and the mixing process for achieving the goal strengths was described using the Korean Industrial Standards (KS) as the reference.

Keywords

References

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