01659019

Component

Currently there does not exist any sound engineering procedure for determining the maintenance threshold of highway porous pavements to meet their overall structural and functional service requirements. Many highway agencies apply the standard pavement condition and distress criteria developed for conventional asphalt pavements to manage porous pavements. This practice is not ideal because there are unique functional requirements of porous pavements that require different considerations in establishing appropriate additional maintenance thresholds. This study identifies the engineering basis for establishing additional maintenance thresholds for porous pavements, with the aim to ensure that porous pavements are effectively maintained to deliver satisfactorily the intended design functional level of service throughout their service life. The maintenance thresholds for the following two most common functional benefits of porous highway pavements are considered in this study: reduced tire-pavement noise, and improved wet-weather skid resistance. Equipment and techniques are now available to measure and monitor the performance of a porous pavement in these two functional aspects. They can be employed to develop maintenance thresholds for effective management of porous pavements. The method of On Board Sound Intensity (OBSI) for noise measurement is recommended for tire-pavement noise management. For skid resistance management, a more elaborate procedure involving flow permeability measurement and water film thickness estimation is proposed, followed by skid resistance analysis and prediction. The engineering basis and rationale for the proposed procedures are presented. Finally, based on measured data and calculated parameter values, the process of establishing maintenance thresholds is demonstrated with an example application.

This paper was sponsored by TRB committee AFD10 Standing Committee on Pavement Management Systems.

18-02197

English

5p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

References

Maintenance management; Permeability; Porous pavements; Skid resistance; Tire/pavement noise; Wet weather

On Board Sound Intensity

Water film thickness

Highways; Maintenance and Preservation; Pavements

Transportation Research Board Annual Meeting 2018 Paper #18-02197

TRIS, TRB, ATRI

Jan 8 2018 10:32AM