Asphalt-Crumb Rubber Waterproofing Membrane

by Ronald K. Frobel, (M.ASCE), Research Assoc.; Water Resources Research Center, Univ. of Arizona, Tucson, Ariz.,
Gene R. Morris, (M.ASCE), Engr. of Research; Ariz. Dept. of Transportation, Phoenix, Ariz.,
C. Brent Cluff, (M.ASCE), Assoc. Hydro.; Water Resources Research Center, Univ. of Arizona, Tucson, Ariz.,
Rudolph A. Jimenez, (M.ASCE), Prof.; Civ. Engrg. Dept., Univ. of Arizona, Tucson, Ariz.,

Serial Information: Journal of the Irrigation and Drainage Division, 1978, Vol. 104, Issue 1, Pg. 43-58

Document Type: Journal Paper


This report is concerned with laboratory testing and field investigations of a water seepage barrier consisting of asphalt cement and reclaimed crumb-rubber tire peel. The test methods that were utilized and evaluated included the following: water vapor transmission (ASTM E96-72, Procedure BW), water absorption (ASTM 570-72), ductility (ASTM D113-74), viscosity, and toughness. The test results showed that the asphalt-rubber as a membrane is relatively impermeable and absorbs an insignificant amount of water. The crumb rubber effectively increases the viscosity of the asphalt cement while decreasing the ductility value. The asphalt-rubber combination exhibits a tough, impact resistant membrane with excellent waterproofing properties.

Subject Headings: Field tests | Asphalts | Rubber | Membranes | Water reclamation | Cement | Ductility | Viscosity

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