Method of preparing an asphalt paving material containing recycled plastics

Abstract

A method of forming an asphalt paving material containing recycled plastics. A first step involves forming recycled plastics into plastic particles. A second step involves dry mixing and heating aggregate and sand. A third step involves dry mixing untreated plastic particles with the aggregate and sand, while continuing heating until the mixture of plastic particles, aggregate and sand reaches a temperature range provided in accepted road building specifications for heating aggregate. A fourth step involves adding liquid asphalt to the mixture of plastic particles, aggregate and sand.

1 . A method of forming an asphalt paving material containing recycled plastics, comprising the steps of: 
 forming recycled plastics into plastic particles;    dry mixing and heating aggregate and sand;    dry mixing untreated plastic particles with the aggregate and sand, while continuing heating until the mixture of plastic particles, aggregate and sand reaches a temperature range provided in accepted road building specifications for heating aggregate; and    adding liquid asphalt to the mixture of plastic particles, aggregate and sand.    
   
   
       2 . The method as defined in  claim 1 , the plastic particles ranging in size from a powder to one quarter inch granules.  
   
   
       3 . The method as defined in  claim 1 , the plastic particles having jagged edges.  
   
   
       4 . The method as defined in  claim 1 , the mixture of plastic particles and aggregate being brought within a temperature range of between 280 degrees and 310 degrees fahrenheit.  
   
   
       5 . The method as defined in  claim 1 , the plastic particles constituting between one percent and ten percent of by weight of the plastic particles, aggregate and liquid asphalt.  
   
   
       6 . The method as defined in  claim 5 , the plastic particles constituting between one percent and four percent by weight.  
   
   
       7 . The method as defined in  claim 1 , the recycled plastic being an unclassified mixture of plastics.  
   
   
       8 . The method as defined in  claim 1 , the recycled plastic being from Class 2.  
   
   
       9 . A method of forming an asphalt paving material containing recycled plastics, comprising the steps of: 
 forming recycled plastics into plastic particles ranging in size from a powder to one quarter inch granules;    dry mixing and heating aggregate and sand;    dry mixing untreated plastic particles with the aggregate and sand, while continuing heating until the mixture of plastic particles, aggregate and sand reaches a temperature range of between 280 degrees and 310 degrees Fahrenheit; and    adding liquid asphalt to the mixture of plastic particles, aggregate and sand until the there is between 6 percent and 8 percent liquid asphalt by weight, between 1 percent and 10 percent plastic particles by weight, aggregate and sand.    
   
   
       10 . The method as defined in  claim 9 , the plastic particles having jagged edges.  
   
   
       11 . The method as defined in  claim 9 , the plastic particles constituting between one percent and four percent by weight.  
   
   
       12 . The method as defined in  claim 9 , the recycled plastic being an unclassified mixture of plastics.  
   
   
       13 . The method as defined in  claim 9 , the recycled plastic being from Class 2.