Polymer concrete composition for cementitious road repair and overlay
AssigneeTexaco Inc.
InventorsKathy B. Sellstrom, Harold G. Waddill
Life of this patent
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Abstract
A polymer concrete system has been discovered which is useful in road overlay and repair. The binder for this aggregate-filled system consists of a liquid epoxy resin and triethyleneglycol diamine or tetraethylene glycol diamine curing agent. A piperazine accelerator ensures adequate strength development after short cure times at ambient temperatures. The binder-aggregate system is relatively flexible, has excellent compression and flexural strength and adheres well to the substrate. The system is distinguished by its fast cure to a compression strength of 3000 psi which will support automotive traffic.
Claims6
A composition comprising:
- A. A binder comprising:
- (1) a vicinal polyepoxide having an average of at least 1.8 reactive 1,2-epoxy groups per molecule;
- (2) a stoichiometric amount of a curing agent comprising triethyleneglycol diamine;
- (3) an accelerator comprising an effective amount of piperazine, and
- B. aggregate comprising gravel, sand and fly ash wherein the aggregate binder weight ratio is 7:1 to 12:1.
A composition comprising:
- A. A binder comprising:
- (1) a vicinal polyepoxide having an average of at least 1.8 reactive 1,2-epoxy groups per molecule;
- (2) a stoichiometric amount of a curing agent comprising tetraethyleneglycol diamine;
- (3) an accelerator comprising an effective amount of piperazine, and
- B. aggregate comprising gravel, sand and fly ash wherein the aggregate binder weight ratio is 7:1 to 12:1.
Dependencies are inferred from the claim text.