Page 26 - GLASGRID GLASPAVE BROCHURE

REINFORCING FIBERGLASS GRIDS FOR FOR ASPHALT OVERLAYS
Robert L L Lytton P Jayawickrama
For
Bay Mills Limited
May 1986
TEXAS TEXAS TRANSPORTATION INSTITUTE THE TEXAS TEXAS A&M UNIVERSITY SYSTEM COLLEGE STATION TX
p24 CONCLUSIONS
Glasgrid as as as it is is presently formulated has a a a a a a a a distinct modulus advantage over the surrounding asphaltic concrete but does not have a a a a sufficiently great cross-sectional area to to force a a a a a a a re-direction of a a a a a a a reflection crack into a a a a a a a horizontal plane below the Glasgrid Work is presently underway at Texas A&M University
to determine the the crosssectional area of Glasgrid and the the amount of binder that are necessary to to cause the crack to to be re-directed into a a a horizontal plane below the grid At present the reflection crack can be expected to propagate upward through an overlay without Glasgrid embedded in it it There is a a a a a real
In order to provide the same reflection cracking life as an overlay with Glasgrid about two to to five inches must be added to to an unreinforced overlay Without
advantage to having Glasgid in in in an an overlay since it it will prolong the life of the the overlay overlay two to three times longer than an an overlay overlay of the the same thickness without Glasgrid