SUBSURFACE DRAINAGE SYSTEMS (DISCUSSIONS)
Normally, a pavement performs well att the beginning of its life and then has a gradual decline in serviceability due mostly to cracking and roughness. In time, the rate of deterioration increases due to many factors including agining; however, probably the greatest contribution to accelerated deterioration is made by the ingress of moisture through the surface, sometimes called "Moisture Accelerated Distress (MAD)." Specific problems associated with water in pavement structures are discussed for flexible pavements, granular materials, subgrade soils, rigid pavements, and drainage vs. capillarity. Methods for limiting damage to pavements due to entrapped water are pointed ouut and the rest of this paper briefly discusses drainage of pavement layers, some case studies of drainable systems constructed as experimental pavements, and the design of aggregate mixtures for a best compromise between stability and drainability.
- Proceedings of the Conference on Crushed Stone for Road and Street Construction and Reconstruction, held June 14-15, 1984, Arlington, Virginia.
National Crushed Stone Association1415 Elliot Place, NW
Washington, DC United States 20007
- Ring, G W
- Mottola, V
- Publication Date: 0
- Features: Figures; References; Tables;
- Pagination: 21 p.
- TRT Terms: Aggregate mixtures; Capillarity; Case studies; Defects; Drainage; Flexible pavements; Granular materials; Mix design; Pavement distress; Pavement layers; Pavements; Rigid pavements; Soil water; Subdrains; Subgrade (Pavements)
- Old TRIS Terms: Subgrade moisture; Subsurface drainage systems
- Subject Areas: Highways; Hydraulics and Hydrology; Pavements; I26: Water Run-off - Freeze-thaw;
- Accession Number: 00455593
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 31 1986 12:00AM