New Circular Economy Business Model for More Sustainable Urban Construction

Demo 3: Large-scale demonstrations of construction with SRM based construction products

Use of SRM materials:

  1. Revitalisation of  a degraded area with SRM based construction products
  2. Pilot constructions of small facilities  (Slovenia, Croatia, Spain)
  3. Road construction

Demo 3A: Revitalisation of a degraded area

State-of-the art:

There are numerous degraded sites in each European city as a consequence of industrial activities, which were moved in the 20th century from the urban to semi-urban areas. As properties, these sites are often of little if no value and thus are not attractive for investors. In addition, they may pose threat to the environment due to potential contamination of soil or hazardous waste.

CINDERELA approach:

The idea behind CINDERELA project is to revitalise such degraded urban areas for use as construction land. In the case when immobilisation of hazardous waste will be needed, mixing with pozzolanic/hydraulic additives will be performed. The main SRM based construction products used for revitalisation will include recycled aggregates, manufactured aggregates, building composites and recycled soils.

Main results:
- revitalisation of degraded area with building composites and recycled soil in Dogoše, Maribor (Slovenia);
- revitalisation of degraded area in Umag (Croatia) supported by BIM;
- revitalisation of an old industrial park in the degraded area in Madrid-Henares (Spain).

Demo 3B: Construction of small facilities

State-of-the art:

There are two main reasons that cause low interest in applying SRM based construction products for buildings. First is that most of the designers are focused on energy efficiency and rarely on materials efficiency of buildings. The other reason is the fact that most of voluminous wastes are preferred to be recycled for geotechnical works where large quantities of materials can be used.

CINDERELA approach:

The CINDERELA approach will demonstrate the use of recycled materials also for high demanding applications (i.e. medium to high-strength concrete). The main SRM based construction products here will be green concrete and mortar finishes made of recycled/manufactured aggregates and alternative binders, recycled aggregates (e.g. glass) for insulation, recycled aggregates for green roofs, reused roof materials and building furniture (windows, doors, etc).

Main results:

- a small demonstration building made of green concrete and other SRM based construction materials at NIGRAD’s production site in Dogoše in Maribor (Slovenia) supported with the use of BIM;
- a fence made of green concrete, which will surround the degraded area in Umag (Croatia) and walls for separation units;
- a small facility on the site of the degraded area in Madrid-Henares (Spain), which will be used as an access control to the industrial area;
- additionally a small-scale demo will be developed for the construction of the facility by 3D printing.

Demo 3C: Road construction

State-of-the art:

Road construction and rehabilitation has one of the largest potential for using large quantities of SRM based construction products. They can be used as unbound or hydraulically bound materials for the subbase and base course or as aggregate for surface course (either in asphalt or concrete). Nevertheless, the real application of SRM based construction materials is often hindered by the lack of appropriate legislation as well as due to the lack of interest of investors including even large national public investors.

CINDERELA approach:

CINDERELA will demonstrate three road construction pilots using alternative materials for subbase and base courses as well as surface course.

Main results:

- 400 m long road section with width of 8 m with side banks constructed at Dogoše site in Maribor (Slovenia);
- an industrial road of 200 m in length and 8.0 m width in Umag (Croatia);
- 500 m long and 6 m wide access road to a degraded area in an old industrial park in Madrid-Henares (Spain).