TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

EFFECT OF POSITIVE DRAINAGE ON FLEXIBLE PAVEMENT LIFE-CYCLE COST

Accession Number:

00978565

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Public/Blurbs/155211.aspx

Find a library where document is available


Order URL: http://worldcat.org/isbn/0309094623

Abstract:

Drainage characteristics have a significant effect on pavement performance. Pavements with poor subsurface drainage properties prematurely exhibit distress and have higher life-cycle cost. Shorter service life and higher maintenance cost are some of the reasons for the higher life-cycle cost. It has been proved in the last 20 years that subsurface drainage increases the pavement service life and reduces its life-cycle cost. A case study demonstrates and quantifies the benefits of providing subsurface drainage through reduction of moisture in daylighted base layers of flexible pavements. The effect of higher base course moisture content on the pavement in situ structural capacity was assessed through the analysis of deflection tests performed with the falling weight deflectometer. In this analysis, a structural adequacy index was used to assess the pavement structural service life. This information was then fed into a life-cycle analysis module to determine the effect of the higher moisture content on the pavement life-cycle cost. An increase in base course moisture content from 16% to 45% resulted in the reduction of pavement service life from 13 to 7 years. For a 40-year period, this translates to a three-fold increase in life-cycle cost for a 250-ft-long pavement section. Reducing moisture retention through various means, thereby improving the subsurface drainage quality of flexible pavement systems, can achieve substantial long-term savings.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1868, Soil Mechanics 2004.

Monograph Title:

SOIL MECHANICS 2004

Monograph Accession #:

00978551

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Zaghloul, S
Ayed, A
Ahmed, Z
Henderson, B
Springer, J
Vitillo, N

Pagination:

p. 135-141

Publication Date:

2004

Serial:

Transportation Research Record

Issue Number: 1868
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309094623

Features:

Figures (4) ; References (8) ; Tables (4)

Subject Areas:

Design; Finance; Geotechnology; Highways; I42: Soil Mechanics

Files:

TRIS, TRB, ATRI

Created Date:

Sep 27 2004 12:00AM

More Articles from this Serial Issue: