00468691

Component

http://onlinepubs.trb.org...trr/1987/1121/1121-011.pdf

https://scholar.google.co...trom&publication_year=1987

Even though road builders have recognized the role of water in pavement deterioration since the last century, with the development of the "rational" methods of pavement design evolved a strong reliance on the ability to build pavements stout enough to resist damage without the benefits of good drainage. Even today, most designers attempt to improve the strength and "quality" of the pavement and base layers used in road construction and neglect rapid drainage. Much of the water that falls on pavements penetrates the structural section through cracks, joints, and porous surfaces. Conventional slow-draining pavements are deteriorating more rapidly than is necessary because of the impacts of heavy vehicles on flooded structural sections. The most positive pavement drainage systems use an open-graded drainage layer under the full width of a roadbed with adequate collector pipes and outlet pipes. However, the California Department of Transportation has found that retrofit edge drains are greatly reducing the rate of step faulting of existing portland cement concrete pavements. The impact of positive rapid drainage features on the performance of a number of pavements is reviewed, with particular emphasis on the establishment of a cost-benefit relationship. The results of this evaluation indicate that the increased cost of effective pavement drainage is almost incidental to the savings realized through improved performance.

Publication of this paper sponsored by Committee on Subsurface Drainage. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01418084

pp 77-85

1987

Transportation Research Record

66th Annual Meeting of the Transportation Board

0309045010

Print

Figures (5) ; Photos (1) ; References (29)

Benefit cost analysis; Concrete pavements; Cost effectiveness; Durability; Economic impacts; Edge drains; Heavy vehicles; Open graded aggregates; Pavements; Pipe; Retrofitting; Subsurface drainage

Design; Economics; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

TRIS, TRB, ATRI

May 31 1988 12:00AM

• AN EVALUATION OF DESIGN HIGH-WATER CLEARANCES FOR PAVEMENTS
• AN EXAMINATION OF ENVIRONMENTAL VERSUS LOAD EFFECTS ON PAVEMENTS
• CHARACTERIZING TEMPERATURE EFFECTS FOR PAVEMENT ANALYSIS AND DESIGN
• EFFECT OF MOISTURE ON THE STRUCTURAL PERFORMANCE OF A CRUSHED-LIMESTONE ROAD BASE
• EFFECT OF RAINFALL ON THE PERFORMANCE OF CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS IN TEXAS
• MOISTURE IN PORTLAND CEMENT CONCRETE
• PROCEDURES FOR ESTIMATION OF ASPHALT CONCRETE PAVEMENT MODULI AT IN SITU TEMPERATURES
• STRESS CAUSED BY TEMPERATURE GRADIENT IN PORTLAND CEMENT CONCRETE PAVEMENTS
• TEMPERATURE RESPONSE OF CONCRETE PAVEMENTS
• USE OF OPEN-GRADED, FREE-DRAINING LAYERS IN PAVEMENT SYSTEMS: A NATIONAL SYNTHESIS REPORT