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Field Application and Maintenance of sidewalk concrete block for PV Power Generation

태양광 발전을 위한 보도형 콘크리트 블록의 현장 적용과 유지관리

  • 김봉균 (동산콘크리트산업(주) 기업부설연구소) ;
  • 김윤용 (충남대학교 토목공학과)
  • Received : 2019.07.05
  • Accepted : 2019.08.19
  • Published : 2019.09.01

Abstract

In order to fulfill the obligation to voluntarily reduce greenhouse gas emissions under the Paris Climate Agreement, the proportion of coal and nuclear power generation is reduced worldwide and national efforts are being made to spread renewable energy including solar power generation. Korea also intends to increase the proportion of renewable energy generation to 30~35% by 2040 by introducing laws and regulations. In addition, while the country is trying to apply solar power generation to sidewalks and roads, there is no research related to it in Korea. Therefore, as a precedent study to develop solar power generation roads, solar power generation concrete blocks applicable to sidewalks and plazas were developed and the applicability was evaluated by constructing them on the site. As a result of indoor experiment, compressive strength was measured by 25.5~35.7MPa and flexural strength was measured by 5.1~10.5MPa, which showed that all domestic standards were satisfied. However, the higher the unit cement amount, the lower the strength was measured according to the mixing of the broken fine aggregate. The absorption rate was 5.7%, which satisfied the domestic standard of 7% or less. As a result of the freeze-thawing test, the reduction rate of the compressive strength after 100 cycles was up to 6.3%. As a result of measuring the settlement amount after construction, the maximum of 2.498mm was measured and irregular settlement occurred in the overall area, which is because the resolution of the sand layer was poor during construction. Maintenance techniques of sidewalk concrete block and solar panel need to be established more efficiently through long-term operation in the further.

Keywords

solar power generation;concrete block;sidewalk;field application;maintenance

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP)

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