한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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- Pages.1417-1421
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- 2008
HWAW방법을 사용한 아스팔트 포장층의 온도에 따른 물성치 변화 결정
Evaluation of Material Property of Asphalt Pavement with Temperature using HWAW method
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Park, Hyung-Choon
(Dept. of Civil Eng., Chungnam Nat. Univ.) ;
- Lee, Mie-Yea (Dept. of Civil Eng., Chungnam Nat. Univ.)
- 발행 : 2008.03.28
초록
Temperature variation affect the response of asphalt pavement and should be considered in the evaluation of performance of the pavement. In this paper, HWAW method is applied to evaluate shear wave velocity(or shear modulus) of the asphalt pavement with temperature. HWAW method which is based on time-frequency analysis using harmonic wavelet transform have been developed to determine phase and group velocities of waves. This method minimize effect of noise and is not affected by mode jump effect which cause erroneous result when surface wave method is applied to pavement evaluation. In order to estimate the applicability of HWAW method, field tests were performed in 1 site and preliminary correlation between shear wave velocity(shear modulus) and asphalt pavement average temperature.