PURPOSES : The exposed aggregate concrete pavement (EACP) is adopted to achieve low traffic noise and long-term skid resistance in European countries such as Belgium and Germany. In Korea, it is first introduced at the Myeon Cheon field site in 2010. It reduces 3 dB(A) from tire–pavement noise compared with transverse tining. Recent investigations show that EACP can reduce tire–pavement noise by an additional 5 dB(A) compared with transverse tining. In this study, the tire–pavement interaction noise of EACP is compared with that of conventional pavements such as asphalt pavement, next-generation concrete surfaces (NGCS), and transverse tining. METHODS : EACP is constructed at two field sites on the SOC research center and Yeo-Ju test road to compare the noise level via close proximity noise measurement. In addition, the noise is measured using two vehicle type based on vehicle speeds of 60, 80, and 100 km/h. RESULTS : The results of noise measurement obtained from the SOC research center are as follows: Porous asphalt pavement 92.8 dB(A), HMA 96. dB(A), transverse tining 100.1 dB(A), and 8 mm EACP 97 dB(A) at a driving speed of 80 km/h. For the case of the Yeo-Ju test road. The noise levels at a driving speed of 80 km/h are as follows: 6 mm EACP, 93.6 dB(A); asphalt grooving pavement, 94.72 dB(A); 8 mm EACP, 95.2 dB(A); NGCS, 95.2 dB(A); transverse tining, 104.1 dB(A). CONCLUSIONS : The result of noise measurement of two sites in the SOC research center and test road shows that the noise level of the 6 mm EAC is lower than that of concrete pavement, such as tining and NGCS, and similar to that of asphalt pavement. In addition, the noise level of the 8 mm EAC is similar to that of the NGCS pavement. The noise reduction effect of the EAC is greater when small-sized coarse aggregates with lower flat and elongation ratios are used.

ABSTRACT
1. 서론
2. 타이어 – 노면 소음의 메커니즘 및 저소음 노면특성
3. 포장종류·표면처리기법 별 노면특성 측정
4. 포장종류 및 표면처리기법에 따른 타이어 – 노면소음 측정 및 분석
    4.1. 포장종류 및 표면처리기법에 따른 타이어 – 노면소음 측정
    4.2. 포장종류 및 표면처리기법에 따른 타이어 – 노면소음 측정 결과
    4.3. 포장종류·표면처리기법에 따른 주파수 대역별타이어 – 노면 소음 분석
5. 결론
REFERENCES

• 김재훈(강릉원주대학교 토목공학과 박사과정) | Kim, Jae Hoon
• 김남철(㈜로드코리아 기술연구소 차장) | Kim, Nam Cheol
• 한승환(한국도로공사 도로교통연구원 포장연구실 연구위원 · 공학박사) | Han, Seung Hwan
• 김영규(강릉원주대학교 방재연구소 연구교수 · 공학박사) | Kim, Young Kyu
• 이승우(강릉원주대학교 토목공학과 교수 · 공학박사) | Lee, Seung Woo Corresponding author