PURPOSES : In Korea, concrete pavements with transverse tining, which have excellent skid resistance, have been mainly constructed to secure road bearing capacity and safety. However, transverse tining has higher noise level of approximately 4-5 dB(A) compared with asphalt pavement. As a method to determine low-noise characteristics of concrete pavements, the fine-size exposed aggregate concrete pavement (EACP) has been studied in Korea and abroad. The surface of EACPs consists of exposed coarse aggregates and 2-3 mm removal surface mortar. EACPs have the advantages of maintaining low-noise and adequate skid-resistance levels during the performance period. Although EACPs have been widely studied to reduce noise, quantitative noise analysis with various paving methods has not been performed owing to differences in mixture proportioning, construction conditions, environmental conditions, and measurement methods. Therefore, the purpose of this study is to investigate the low-noise characteristics of fine-size EACPs by comparing noise with various paving methods, including concrete and asphalt pavements.
METHODS: In this study, noise data were collected to quantitatively analyze the low-noise characteristics of EACPs compared with various paving methods such as transverse tining, longitudinal tining, SMA, and HMA.
RESULTS: The evaluation of the low-noise characteristics of EACPs compared with transverse tining showed that the relative noise of 13 mm EACP with transverse tining was reduced by approximately 2% at 60 km/h, 4% at 80 km/h, and 5% at 100 km/h. The relative noise of 10 mm EACP with transverse tining was reduced to 3%, 7%, and 8% at 50 km/h, 80 km/h, and 100 km/h, respectively. In addition, it was confirmed that the noise of 10 mm EACP was similar to that of asphalt pavement.
CONCLUSIONS : It was confirmed that EACP using 10 mm coarse aggregates generates lower noise than that using 13 mm coarse aggregates. Therefore, the use of coarse aggregates smaller than 10 mm needs to be considered to improve the low-noise effect of EACP.

ABSTRACT
 1. 서론
 2. 문헌검토
  2.1. 도로포장의 소음 특성
  2.2. 소음 측정 방법
  2.3. 소입경 골재노출콘크리트 포장
 3. 소입경 골재노출콘크리트포장의 소음데이터수집
  3.1. 소음측정 data 수집 및 분석 방안
  3.2. database 구축
 4. 소입경 골재노출콘크리트포장의 소음 특성분석
  4.1. Whining 현상의 감소
  4.2. 소입경 골재노출콘크리트포장과 타이닝 표면처리공법의 소음특성 비교·분석
  4.3. 소입경 골재노출콘크리트포장과 아스팔트포장의 소음특성 비교·분석
 5. 결론
 REFERENCES

• 김재훈(강릉원주대학교 토목공학과) | Kim Jae Hoon
• 김영규(강릉원주대학교 방재연구소) | Kim Young Kyu
• 이승우(강릉원주대학교 토목공학과) | Lee Seung Woo 교신저자