CHAP-YT - The use of recycled aerated concrete in screed

MIP

Industrial partner

Subcontractor

Project leader

Synopsis

A feasibility study on the recycling of aerated concrete for use in screed. Aerated concrete is one of the few groups of construction and demolition waste for which no proper recycling technique exists at this moment. In this study the recycling for reuse in traditional screed in place of sand, reuse in screed casting and reuse and recycling in insulating screed (replacing clay granules).

Objectives

The intention of this study is to use recycled aerated concrete, whereby the extraction is not important and the intrinsic properties of the material can be valorized. In particular, this means the use of recycled aerated concrete in  screed.
To be able to recycle  this cellular concrete in  screed, the following issues still need to be clarified:

1. Will there be any change of quality of this recycled aerated concrete in the course of time?  What is the reaction of this mixture on aging tests?
2. Is it possible to use  the recycled aerated concrete for foundry screed?
3. Is the recycled aerated concrete suitable to be used for insulating screed as a substitution of clay granules?

The feasibility study consists of three parts, namely recycled aerated concrete replacing traditional sand in traditional screed, recycled aerated concrete in casting screed and recycled aerated in insulating screed replacing clay granules. The company Emlyn SA has the necessary facilities to be able to deliver  the aerated in the appropriate form for these 3 applications. Jochems Chapewerken AS will run a pilot project on a real scale for each application. In case there is a realistic potential of the aerated concrete, the laboratory tests will start. For these tests, the engineering department of the Katholieke Hogeschool Brugge-Oostende will be involved. If positive, the results of the feasibility study will also be submitted to the CSTC with the intention to incorporate the products / techniques in the applied requirements for placing screed.

Start

1/10/2010

Duration

12 months

Budget

EUR 56479

Partners

Industrial partners

Recycling Assistance BVBA
Jochems Chapewerken NV

Subcontractors

Project leader

Johan D'Hooghe (Recycling Assistance BVBA)