Support product

Abstract

A support product configured to receive poured concrete, the support product comprising a latticework of walls and a plurality of edges, wherein the walls extend between a lower surface and an upper surface and define a plurality of cells, wherein at least one edge comprises a catch and a partial keyway, wherein the catch is configured to connect with a catch of an adjacent support product to restrain relative movement of connected support products, and wherein the partial keyway is configured to be located adjacent to a partial keyway of a connected support product, so that adjacent partial keyways define a complete keyway between connected support products.

1 . A support product configured to receive poured concrete, the support product comprising:
 a latticework of walls; and   a plurality of edges;   wherein:
 the walls:
 extend between a lower surface and an upper surface; and 
 define a plurality of cells; and 
 
 at least one edge comprises a partial keyway, the partial keyway being configured to be located adjacent to a partial keyway of a connected support product, so that adjacent partial keyways define a complete keyway between connected support products, the complete keyway having a shape configured to prevent separation of adjacent support products. 
   
     
     
         2 . The support product of  claim 1 , wherein the complete keyway has a chevron shaped section. 
     
     
         3 . The support product of  claim 1 , wherein the support product is symmetrical about both a horizontal centreline and a vertical centreline. 
     
     
         4 . The support product of  claim 1 , wherein the support product is constructed of polymer. 
     
     
         5 . The support product of  claim 1 , wherein the support product is rectangular and comprises four edges, each edge comprising at least two partial keyways. 
     
     
         6 . The support product of  claim 1 , wherein at least one edge comprises a catch, the catch being configured to connect with a catch of an adjacent support product to restrain relative movement of connected support products. 
     
     
         7 . The support product of  claim 1 , wherein each edge comprises at least one catch and at least one partial keyway, wherein partial keyways of opposed edges are symmetrical. 
     
     
         8 . The support product of  claim 1 , wherein each catch is either a first part or a second part. 
     
     
         9 . The support product of  claim 8 , wherein the first part is a male pin and the second part is a female slot. 
     
     
         10 . The support product of  claim 6 , wherein a pair of adjacent edges of the support product comprises catches having a first part, and an opposed pair of adjacent edges of the support product comprises catches having a second part, to facilitate assembly of a large number of support products. 
     
     
         11 . The support product of  claim 1 , wherein the support product further comprises a cylindrical access cell, to facilitate access below the support product. 
     
     
         12 . The support product of  claim 11 , wherein the cylindrical access cell comprises protrusions into the cylindrical access cell. 
     
     
         13 . The support product of  claim 1 , wherein the latticework of walls is between 20 mm and 100 mm high. 
     
     
         14 . The support product of  claim 1 , wherein the latticework of walls is between mm and 50 mm high. 
     
     
         15 . The support product of  claim 1 , wherein the walls of the latticework are of substantially identical cross-section. 
     
     
         16 . The support product of  claim 1 , wherein the walls of the latticework comprise a T section, wherein the wall includes a wider section at the lower surface, to provide additional weight bearing capability when not filled with concrete. 
     
     
         17 . The support product of  claim 1 , wherein the partial keyway has a half-chevron shaped section. 
     
     
         18 . A pavement course comprising the support product of  claim 1 . 
     
     
         19 . The pavement course of  claim 18 , comprising concrete extending from the lower surface of the support product to the upper surface of the support product. 
     
     
         20 . The pavement course of  claim 18 , further comprising an edge formwork piece configured to connect to the support product, the edge formwork piece defining an edge of the pavement course.