ASPHALT 



SECTION 



Aspholt- 

 Concrete 



Asphalt-concrete test section, 

 Bonny Dam, Colo. 



Prototype Installation : 



Glen Anne Dam, California. 



Upstream slope protection on dam asphalt- concrete revetment, 1 foot 



thick, 1 on 4 slope (The Asphalt Institute, 1965). 



Point Lookout, Maryland. 



Asphalt- concrete revetment protects both sides of a 2,200-foot-long 

 causeway which extends into Chesapeake Bay. The 1 on 4 slope revet- 

 ment is 4 inches thick placed in two lifts with welded wire fabric 

 reinforcing placed between lifts (The Asphalt Institute, 1965). 



Wave Tank Tests : 

 Unknown . 



Design Factors : 



Zero-damage wave height: Depends on asphalt thickness. 



Wave runup: 1 compared to smooth slope (estimated). 



Wave reflection: High (estimated). 



Remarks : 



Asphalt placement underwater is difficult and expensive. 



Any revetment design should consider a gravel filter with gravel or 

 rock weep holes for pressure relief. 



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