Abstract
This study investigates the permeable asphalt concrete(PAC) pavement, based on thetesting measurements of absorption coefficients through an impedance tube to assess noise reductioncharacteristics as well as the field measurements of pass-by and NCPX(Noble Close Proximity). It is clearly shown that an noise attenuation of sound wave energy is achieved, depending on theair void content and PAC pavement thickness. The sound absorption characteristics of PAC showsthe dependancy on air void percentage as well as PAC thickness. In addition, traffic noisemeasurements taken from PAC pavements in the field are compared to those taken from dense-gradedasphalt concrete(DGAC), using a noise propagation prediction program, which is called KRON(Korea Road Traffic Noise). Furthermore, a measuring technique for tire-pavement interaction noisethat uses a NCPX method was used in order to perform noise evaluation in this study.
| Translated title of the contribution | Noise Reduction Analysis of Permeable Asphalt Concrete Using Impedance Tube and Noise Propagation Prediction Program |
|---|---|
| Original language | Korean |
| Pages (from-to) | 193-205 |
| Number of pages | 13 |
| Journal | 서울도시연구 |
| Volume | 14 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 2013 |