ISSN: 1945-7545
CODEN: GTJODJ
Published Online: 17 August 2010
Page Count: 8

Hydraulic Properties of Asphalt Concrete

Pease, R. Eric
Senior Engineer, Daniel B. Stephens and Associates, Inc., Albuquerque, NM

Stormont, John C.
Professor, Dept. of Civil Engineering, Univ. of New Mexico, Albuquerque, NM

Hines, J.
Laboratory Manager, Daniel B. Stephens and Associates, Inc., Albuquerque, NM

O’Dowd, Dan
Laboratory Technician, Daniel B. Stephens and Associates, Inc., Albuquerque, NM

(Received 9 July 2009; accepted 21 July 2010)

Abstract

This paper presents the laboratory results and methods used to measure the hydraulic parameters of asphalt concrete core samples. The same testing methods used to measure the saturated hydraulic conductivity and moisture retention in soils were applied to the asphalt concrete cores. Moisture retention was analyzed according to the van Genuchten (1980) mathematical model to produce the drying portion of the moisture retention curves. In addition to standard desorption tests, wetting curves were developed for two asphalt concrete cores. Saturated hydraulic conductivity was measured using a flexible wall permeameter. The asphalt concrete differs from these soils by maintaining a much lower porosity, and the dry asphalt concrete exhibited a water repellant behavior.

Keywords:
asphalt concrete, unsaturated hydraulic conductivity, saturated hydraulic conductivity, water retention, moisture characteristic curve, water drop penetration test, water repellant, water impellent

Paper ID: GTJ102644
DOI: 10.1520/GTJ102644
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