US 5,024,554 A · Bridge joint construction

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.

Claims10

Dependent claims

A method of constructing a bridge joint in a channel which has been lined with elastomeric material, said channel overlying the expansion gap between structural members, said method comprising:

applying a mixture of aggregate and elastomeric binder material as a base layer of said mixture in the bottom of said lined channel;
applying at least one or more succeeding layers of said mixture in the channel over said base layer to fill the channel to within 3/4" of the top of said channel, the size of said aggregate in said base and succeeding layers being substantially uniform, the thickness of each layer being restricted to about the maximum size of said aggregate;
and applying a top layer of said mixture to complete the filling of channel, the aggregate in said top layer being substantially smaller than the aggregate in the layers below said top layer.

Dependencies are inferred from the claim text.

Bridge joint construction

Life of this patent

Bridge joint construction

Life of this patent

Abstract

Claims10