Road structure – process – or apparatus – Process – Providing expansion joint
Patent
1990-02-22
1991-06-18
Britts, Ramon S.
Road structure, process, or apparatus
Process
Providing expansion joint
404 47, E01C 1102
Patent
active
050245546
ABSTRACT:
A method for constructing a bridge joint in a channel overlying an expansion joint involves lining the channel with a thermoplastic asphaltic elastomeric binder followed by successive applications of layers of aggregate and binder mixture wherein the thickness of each layer is restricted to about the maximum dimension of the aggregate in the layer. Care is taken to insure that both the binder and the aggregate are hot when the layered joint is formed to insure good bonding between layers and with the roadway material. The aggregate of each layer is raked to project upwardly from the mass of the layer before a subsequent layer is applied to enhance the interlock between layers. A final layer containing smaller aggregate is applied at the joint top and the joint is then sealed and rolled to form an integrated, resilient load bearing structure.
REFERENCES:
patent: 3223005 (1965-12-01), Carlson
patent: 3474625 (1969-10-01), Draper et al.
patent: 3827204 (1974-08-01), Walters
patent: 4279533 (1981-07-01), Peterson et al.
patent: 4324504 (1982-04-01), Cottingham et al.
patent: 4601604 (1986-07-01), Clark et al.
patent: 4784516 (1988-11-01), Cox
"Bituminous Materials in Road Construction", pp. 550-551.
Road Research Laboratory, Department of the Environment, "Full-scale road experiments using rubberized surfacing materials" by P. D. Thompson and W. S. Szatkowski, 1971.
Baker Richard J.
Benneyworth Douglas F.
Britts Ramon S.
Koch Materials Company
Spahn Gay Ann
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