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recycling returned concrete

Concrete Recycling: Reuse of Returned Plastic Concrete and ...

9/7/2012 · recycling concrete: Part 1. Returned plastic concrete—This investigation addresses how RPC is reused in its entirety; it does not address the practice of washing fresh mix to recover aggregate (recognizing that the reuse of concrete aggregates helps conserve natural resources and has wider applications). Part 2.

New Technology for Recycling Returned Concrete - Constructech

3/11/2019 · New Technology for Recycling Returned Concrete. View Larger Image; Millions of cubic yards of unused concrete are returned in North America each year. Concrete is the world’s most used construction material. It is used to construct homes, schools, offices, roads, runways, tunnels, and bridges and so much more. ...

New sustainable technology for recycling returned concrete ...

9/30/2014 · Recycling and recovery of both hardened concrete and returned concrete is an important issue for concrete sustainability. Returned concrete is the unused unset concrete that comes back to the plant in the concrete truck as excess material.

Recycling of Returned Ready-Mixed Concrete is Topic of ...

4/17/2013 · Recycling of Returned Ready-Mixed Concrete is Topic of Proposed ASTM Standard. Proposed standard designed to ensure that returned fresh concrete mixed with new concrete has known and verifiable characteristics.

New sustainable technology for recycling returned concrete ...

9/30/2014 · A new technology is presented for transforming returned concrete into a granular material that can be reused as aggregates for concrete. The new method is based on non-toxic, easy to use additives that are added directly into the drum of truck mixers containing returned concrete.

Concrete Recycling & Concrete Reclaiming - What to do with ...

Let me make a distinction right her: I consider recycling concrete to be the action of taking hardened concrete and using it again. Whether it's returned, hardened, and crushed, or material from a road or building, the process of using that hardened material again is what I consider recycling.

ALLU and MAPEI in concrete recycling co-operation | Agg-Net

4/30/2019 · ALLU MAPEI Circulus is a highly mobile and industrially efficient method for transforming returned concrete into a high-quality recycled aggregate. The system is aimed at large and medium-sized ready-mixed concrete producers or cement/concrete recycling companies who wish to reduce the costs associated with returned waste concrete.

Rheological Approach for Recycling Returned Concrete

Returned concrete is treated directly in the mixer with two additives, one based on a superabsorbent polymer (SAP) and a second based on a set accelerator (Set Acc). The dosage of both of these additives depends on the rheology and water to cement ratio of the concrete. Rheological Approach for Recycling Returned Concrete Fabio Curto 1

ZERO-IMPACT RECYCLING OF RETURNED CONCRETE

processing returned concrete, have limited the possibility of achieving high level of recycling. In the present paper, a new method for recycling returned concrete, which fully complies with requisites of sustainability, is presented. 2. The new method of recycling returned concrete

Concrete recycling systems - Liebherr

Our innovative washing-out units enable environmentally conscious use of materials on the site. Liebherr recycling plants are suitable for returned concrete from the site, as well as for washing water and residual concrete from cleaning mixing plants, truck mixers and concrete pumps.