Recycled plastic aggregate for use in concrete

Abstract

The synthetic recycled plastic aggregate for use in concrete is a composite material containing between 30% and 50% by weight shredded recycled plastic, the balance being a filler embedded in a matrix of the recycled plastic. The recycled plastic includes polyethylene terephthalate (PET). The filler can include dune sand, fly ash and quarry fines. The synthetic recycled plastic aggregate is best used to make concrete with a water-to-cement ratio of at least 0.5.

1 . A synthetic recycled plastic aggregate (RPA) for use in concrete, comprising:
 shredded recycled plastic, the shredded recycled plastic being from about 30% to about 50% by weight of the synthetic recycled plastic aggregate (RPA), and   a filler, the filler being embedded in a matrix of the shredded recycled plastic and providing the balance of the synthetic recycled plastic aggregate (RPA),   wherein the filler has a maximum particle size of 0.15 mm,   wherein the shredded recycled plastic includes polyethylene terephthalate (PET), and wherein the shredded recycled plastic has a maximum particle size of 2.36 mm.   
     
     
         2 . The synthetic recycled plastic aggregate for use in concrete according to  claim 1 , wherein the filler includes granular waste selected from the group consisting of dune sand, fly ash, and quarry fines. 
     
     
         3 - 4 . (canceled) 
     
     
         5 . The synthetic recycled plastic aggregate for use in concrete according to  claim 1 , wherein the synthetic recycled plastic aggregate (RPA) is shredded and has a maximum particle size of 10 mm. 
     
     
         6 . The synthetic recycled plastic aggregate for use in concrete according to  claim 1 , wherein the synthetic recycled plastic aggregate (RPA) includes about 50% by weight polyethylene terephthalate (PET) and about 50% by weight filler. 
     
     
         7 . The synthetic recycled plastic aggregate for use in concrete according to  claim 1 , wherein the synthetic recycled plastic aggregate (RPA) includes about 30% by weight polyethylene terephthalate (PET) and about 70% by weight filler. 
     
     
         8 - 20 . (canceled) 
     
     
         21 . A synthetic recycled plastic aggregate (RPA) for use in concrete, consisting of:
 shredded recycled plastic, the shredded recycled plastic being from about 30% to about 50% by weight of the synthetic recycled plastic aggregate (RPA), the shredded recycled plastic having a maximum particle size of 2.36 mm; and   wherein the shredded recycled plastic includes polyethylene terephthalate (PET);   a filler, the filler being embedded in a matrix of the shredded recycled plastic and providing the balance of the synthetic recycled plastic aggregate (RPA), the filler including granular waste; and   wherein the granular waste having a maximum particle size of 0.15 mm, and the granular waste is selected from the group consisting of dune sand, fly ash, and quarry fines.