초록 ▼

A hollow paving block comprises a substantially planar member having a first surface and a second surface opposite the first surface. The first surface of the planar member is a textured surface which functions as a top of the paving block. A side wall extends along and away from a periphery of the

A hollow paving block comprises a substantially planar member having a first surface and a second surface opposite the first surface. The first surface of the planar member is a textured surface which functions as a top of the paving block. A side wall extends along and away from a periphery of the second surface of the planar member to define a cavity in the paving block. The side wall has a bevelled edge which extends about a mouth of the cavity. At least one protrusion extends along the second surface of the planar member. The paving block is formed in part from crumb rubber and polyolefin.

대표청구항 ▼

1. A hollow paving block comprising: a substantially planar member having a first surface and a second surface opposite the first surface, the first surface being a textured surface which functions as a top of the paving block;a side wall extending along and away from a periphery of the second surfa

1. A hollow paving block comprising: a substantially planar member having a first surface and a second surface opposite the first surface, the first surface being a textured surface which functions as a top of the paving block;a side wall extending along and away from a periphery of the second surface of the planar member to define a cavity in the paving block, the cavity having a mouth, and the wall having a bevelled edge extending about the mouth of the cavity; andat least one protrusion extending from the second surface of the planar member wherein the paving block is formed from crumb rubber and a polyolefin, and the polyolefin forms a matrix for an inner layer of crumb rubber with the textured surface being a result of granules of crumb rubber extending through the polyolefin matrix. 2. The paving block as claimed in claim 1 wherein the said at least one protrusion is a rib extending along a length of the second surface of the planar member. 3. The paving block as claimed in claim 1 the crumb rubber is less than 20 mesh crumb rubber. 4. The paving block as claimed in claim 1 the crumb rubber is 10 mesh crumb rubber. 5. The paving block as claimed in claim 1 wherein the polyolefin is selected from the group consisting of polyethylene and polypropylene. 6. The paving block as claimed in claim 1 wherein the polyolefin has a melting index ranging between approximately 5 g/10 minutes and approximately 50 g/10 minutes. 7. The paving block as claimed in claim 5 wherein the polyolefin has a melting index ranging between approximately 10 g/10 minutes and approximately 30 g/10 minutes. 8. The paving block as claimed in claim 1 wherein the paving block is less than 50% by weight crumb rubber. 9. The paving block as claimed in claim 1 wherein the paving block is approximately 50% to 80% by weight crumb rubber and approximately 18% to 40% by weight polyolefin. 10. The paving block as claimed in claim 1 wherein the paving block is approximately 55% to 75% by weight crumb rubber and approximately 23% to 48% by weight polyolefin. 11. The paving block as claimed in claim 1 wherein the paving block is approximately 60% to 65% by weight crumb rubber and approximately 33% to 38% by weight polyolefin. 12. The paving block as claimed in claim 1 wherein the paving block is also formed from titanium dioxide. 13. The paving block as claimed in claim 12 wherein the paving block is less than 2% by weight titanium dioxide. 14. A hollow paving block comprising: a substantially planar member having a first surface and a second surface opposite the first surface, the first surface being a textured surface which functions as a top of the paving block;a side wall extending along and away from a periphery of the second surface of the planar member to define a cavity in the paving block, the cavity having a mouth, and the wall having a bevelled edge extending about the mouth of the cavity;at least one protrusion extending along the second surface of the planar member, and wherein the block is approximately 50% to 80% by weight crumb rubber which is less than 20 mesh crumb rubber, and approximately 18% to 40% by weight polyolefin having a melting index ranging from approximately 5 g/10 minutes to approximately 50 g/10 minutes and selected from the group consisting of polyethylene and polypropylene wherein the textured surface being a result of granules of crumb rubber extending through the polyolefin matrix. 15. The paving block as claimed in claim 14 wherein the said at least one protrusion is a rib extending along a length of the second surface of the planar member. 16. The paving block as claimed in claim 14 wherein the paving block is less than 2% by weight titanium dioxide. 17. The paving block as claimed in claim 14 wherein the crumb rubber has a particle size of 10 mesh or less.