Permeable material
Rubber crumb from recycled automotive or truck tires or other rubber products is used to produce a material which is water and gas permeable. This material may be used for erosion control structures in place of, or in addition to, standard rock socks, straw wattle, or other erosion control configurations. The rubber crumb material may be used to produce growing containers for plants and children's blocks or other children's toys. A method for combining rubber crumb with a binder to produce various configurations of erosion control structures, growing containers and children's toys is also disclosed.
1. A movable erosion control structure comprising:
a plurality of crumb rubber portions;
a binder coated on the plurality of crumb rubber portions;
the coated crumb rubber portions are molded to adhere each of the coated crumb rubber portions to at least another one of the coated crumb rubber portions to form a resilient, movable erosion control structure with a density of between about 20 lb./cu ft. to about 48 lb./cu. ft.; and
whereby interstices are formed between at least some of the adhered crumb rubber portions to permit water and gas to pass therethrough while retaining at least some particulate matter
whereby the resilient movable erosion control structure may be placed on a surface.
2. The movable erosion control structure of claim 1 wherein the binder includes a polyurethane resin binder.
3. The movable erosion control structure of claim 1 wherein the crumb rubber portions are approximately between ¼ to about ¾ inch crumb rubber.
4. The movable erosion control structure of claim 1 wherein the molded coated crumb rubber portions include a mat portion which may be substantially rectangular, square, or circular.
5. The movable erosion control structure of claim 4 wherein the mat portion includes a lip portion along at least a portion of an edge of the mat portion.
6. The movable erosion control structure of claim 4 wherein the mat portion includes attachment strips to connect the mat portion to at least one of: a grate; an erosion control structure; a drain inlet; a pavement surface; or a drain opening.
7. The movable erosion control structure of claim 1 wherein the movable erosion control structure includes an identification device attachable to the movable erosion control structure.
8. The movable erosion control structure of claim 1 wherein the molded coated crumb rubber portions include:
a first block portion including a notch in the first block portion; and
a first strip portion including an end engageable with the notch.
9. The movable erosion control structure of claim 8 further including a second strip portion including an end engageable with the notch whereby the end from the first strip portion and the end from the second strip portion abut in the notch.
10. The movable erosion control structure of claim 9 further including:
a second block portion including a notch; and
a third strip portion including an end engageable with the notch;
whereby the end on the third strip portion abuts a second end of the second strip portion opposite to the end of the second strip portion which abuts the end of the first strip portion, the end portions of the second and third strip portions abut in the notch of the second block portion.
11. The movable erosion control structure of claim 1 wherein the molded coated crumb rubber portions include a rectangular strip with angled edge portions on opposite edges of the rectangular strip.
12. A resilient erosion control mitigation material comprising:
a plurality of crumb rubber portions;
a binder coated on the plurality of crumb rubber portions;
the coated crumb rubber portions compressed to a density of between about 38 lb./cu ft. to about 48 lb/cu. ft. and including interstices formed between at least some of the molded coated crumb rubber portions to form the resilient erosion control mitigation material; and
whereby the compressed coated crumb rubber portions form a resilient structure movably placed above a surface to permit water to pass through the structure and to filter sediment and debris from the water.
13. A method for making an erosion control mitigation structure comprising the steps of:
weighing crumb rubber portions into a mixer;
weighing a binder into the mixer;
mixing the crumb rubber portions with the binder to coat the crumb rubber portions;
placing the coated crumb rubber portions into a mold;
compressing the mold to form a resilient erosion control mitigation structure having a density of between about 38 lb./cu ft. to about 48 lb/cu. ft.;
curing the binder; and
removing the resilient erosion control mitigation structure from the mold.
14. The method of claim 13 wherein the step of weighing binder into the mixer includes adding about 1 part water.
15. The method of claim 13 wherein the step of compressing includes securing mold portions together with one or more removable securing devices.
16. The method of claim 13 wherein the step of curing includes heating the crumb rubber portions and the binder in the mold.
17. The method of claim 13 further including the step of placing the erosion control mitigation structure adjacent to a surface including at least one of: a pavement surface; a drain opening; a grate; a curb; or a construction site.
18. The method of claim 13 further including the step of cleaning the erosion control mitigation structure by at least one of: washing; soaking; rinsing; high pressure water rinsing; brushing; or high pressure airflow.
19. The method of claim 13 wherein the step of compressing the mold includes compressing at about 125 PSI.
20. The method of claim 13 wherein the step of weighing the binder includes an amount of binder of about 10-15% by weight of the weight of the rubber portions.
21. The movable erosion control structure of claim 1 wherein the density is between about 38 lb./cu ft. to about 48 lb/cu. ft.