Concrete Recycling: Difference between revisions
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*HOWEVER it is largely made using newly mined materials, which is not only Unsustainable, but also presses challenges to a [[Circular Economy]] / Sourcing Materials | *HOWEVER it is largely made using newly mined materials, which is not only Unsustainable, but also presses challenges to a [[Circular Economy]] / Sourcing Materials | ||
*This page aims to cover the Status Quo, the State of the Art (in terms of lower [[TRL]] Research / [[Pilot Plants]] etc and outline areas OSE could pursue Development / Further Research | *This page aims to cover the Status Quo, the State of the Art (in terms of lower [[TRL]] Research / [[Pilot Plants]] etc and outline areas OSE could pursue Development / Further Research | ||
=Processes= | |||
==Crushing / Size Reduction== | |||
*This is relevant for BOTH conventional use as [[Construction Aggregate]] such as for a [[Sub Base]] in [[Highway Construction]] etc, and for more intensive “drop in” recycling solutions | |||
*Either way, after [[Demolition]] / [[Deconstruction]] , where tools such as [[Jackhammers]] / [[Hydraulic Breakers]] and other tools are used to break the Concrete (Structure) into manageable pieces, it is pushed into a pile / [[Roll Off Boxes]] or [[Dump Trucks]] etc | |||
*This is then taken and transferred to a series of crushers such as [[Jaw Crushers]] etc | |||
*Further size reduction can be achieved by a [[Hammermill]] or [[Ball Mill]] etc | |||
=Internal Links= | =Internal Links= | ||
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=External Links= | =External Links= | ||
* | *[https://en.m.wikipedia.org/wiki/Concrete_recycling The Wikipedia Page on Concrete Recycling] | ||
[[Category: Concrete]] [[Category: Housing and Construction]] [[Category: Solid Waste Management]] | [[Category: Concrete]] [[Category: Housing and Construction]] [[Category: Solid Waste Management]] | ||
Latest revision as of 19:31, 29 September 2025
Basics
- Concrete is one of the most commonly used materials
- HOWEVER it is largely made using newly mined materials, which is not only Unsustainable, but also presses challenges to a Circular Economy / Sourcing Materials
- This page aims to cover the Status Quo, the State of the Art (in terms of lower TRL Research / Pilot Plants etc and outline areas OSE could pursue Development / Further Research
Processes
Crushing / Size Reduction
- This is relevant for BOTH conventional use as Construction Aggregate such as for a Sub Base in Highway Construction etc, and for more intensive “drop in” recycling solutions
- Either way, after Demolition / Deconstruction , where tools such as Jackhammers / Hydraulic Breakers and other tools are used to break the Concrete (Structure) into manageable pieces, it is pushed into a pile / Roll Off Boxes or Dump Trucks etc
- This is then taken and transferred to a series of crushers such as Jaw Crushers etc
- Further size reduction can be achieved by a Hammermill or Ball Mill etc
Internal Links
- Concrete
- Asphalt Concrete / Rubberized Asphalt Concrete (Can largely be milled up, remelted, and recycled in place, due to the Asphalt essentially being a Thermoplastic
- Asphalt Millings can be downcycled as a Construction Aggregate or Gravel Road material, albeit with some Micro/Nano Plastics (for the latter) + Hydrocarbon Leaching concerns for both
- Portland Cement / Fly Ash Cement based Concrete
- More common/conventional Concrete, however more complex to recycle, short of downcycling to aggregate
- Rebar
- Steel Rebar should be easily separated via Electromagnetic Separation
- Fiber Reinforced Polymer Rebar / Fiberglass Rebar / Carbon Fiber Rebar present some challenges in terms of M/NP Pollution, as well as difficulties in separation
- Thermal Recycling such as in a Calcining step may suffice
- Concrete Aggregate / Sand
- For information on Aggregate Parameters