00799040

Component

https://doi.org/10.3141/1709-02

http://scholar.google.com...rson&publication_year=2000

Moisture in pavement base material is a major contributor to pavement failure. Presented is an approach for measuring real-time moisture content in pavement bases during and after rain events. Conceptual models are formed for water flow through pavement sections, and an evaluation of the drainage performance of typical edge drain configurations is provided. With an extensive sensor network and sophisticated data collection system, the Minnesota Road Research Project (MnROAD) provided an opportunity to study pavement drainage and associated base materials. Understanding the short-term, time-dependent variation in moisture contents allows the systematic evaluation of new and existing edge drain systems. Two typical drainage configurations constructed at the MnROAD site were chosen for the study. The first section consisted of edge drains that were introduced into a dense-graded base material to simulate retrofitting of pavements; the second section involved a traditional edge drain design. Data were collected from an automated weather station and from Time Domain Reflectometry probes. Data collected at the MnROAD site indicated that current edge drain design and construction techniques may result in pavement drainage systems that are only partially effective in directing flow away from the pavement base.

This paper appears in Transportation Research Record No. 1709, Geotechnical Aspects of Pavements 2000.

English

p. 11-18

2000

Transportation Research Record

0309066883

Figures (8) ; Photos (1) ; References (9) ; Tables (2)

Base course (Pavements); Construction; Design; Edge drains; Moisture content; Performance; Rain; Subsurface drainage

Minnesota

Construction; Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

TRIS, TRB, ATRI

Sep 28 2000 12:00AM

• ASSESSMENT OF FALLING WEIGHT DEFLECTOMETER DATA FOR STABILIZED FLEXIBLE PAVEMENTS
• CONSIDERATIONS FOR PROVIDING SUBSURFACE DRAINAGE IN JOINTED CONCRETE PAVEMENTS
• DEGREE AND EXTENT OF WETTING DUE TO CAPILLARY RISE IN SOILS
• EFFECTIVENESS ANALYSIS OF SUBSURFACE DRAINAGE FEATURES BASED ON DESIGN ADEQUACY
• FIELD EVALUATION OF GEOCELL USE IN FLEXIBLE PAVEMENTS
• FINITE-ELEMENT ANALYSIS OF FATIGUE LIFETIME IN PAVEMENTS
• FINITE-LAYER APPROACH TO PAVEMENT RESPONSE EVALUATION
• PAVEMENT DISTRESS AND ROADWAY DAMAGE CAUSED BY SUBSURFACE MOISTURE AND FREEZING TEMPERATURES: CASE HISTORIES FROM ALASKA
• SEASONAL VARIATION OF MOISTURE AND SUBSURFACE LAYER MODULI
• STONE INTERLAYER PAVEMENT DESIGN
• THREE-DIMENSIONAL MODELING OF SPATIAL SOIL PROPERTIES VIA ARTIFICIAL NEURAL NETWORKS
• TUBE SUCTION TEST FOR EVALUATING AGGREGATE BASE MATERIALS IN FROST- AND MOISTURE-SUSCEPTIBLE ENVIRONMENTS
• USING A MULTISEGMENT TIME DOMAIN REFLECTOMETRY PROBE TO DETERMINE FROST DEPTH IN PAVEMENT SYSTEMS