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Description
This project aims at the industrial development and promotion of multiple products / materials with a high degree of incorporation of waste from the construction and steel industry sectors. i) the development of industrial technology for structural concrete and bituminous concrete with incorporation of residues; ii) systematic models for the recovery of waste in a business environment, and its transition to the market. It is intended to contribute to a high degree of recovery of CDW, through its incorporation (up to 35%) in the development of structural and bituminous concrete and for the increase and promotion of the use of secondary raw materials, namely, with a high degree of incorporation (up to 75%) of Inert Steel Aggregate for Construction.
Summary of project results
This project aims to develop the industrial sector and to promote multiple products / materials with a high degree of incorporation of waste from the construction and steel industry sectors. Most of the construction companies'' operations rely on the use of structural and bituminous concrete, which in part is due to the large scale production of the sector, has an intensive use of raw materials and energy resources, as well as the dubious distinction of being one of the biggest contributors to CO2 emissions.
State of the art on the technical, environmental and economic performance of incorporating recycled aggregates from CDW and EAF Slag aggregates in concrete and in bituminous mixtures;
Requirements and technical specifications to be met by recycled aggregates from CDW and EAF Slag aggregates in concrete and in bituminous mixtures;
Production of recycled aggregates from CDW and processing of EAF Slag aggregates in fractions for the concrete and asphalt mixtures
Characterization tests on recycled aggregates from CDW
Development of concrete with recycled aggregates from CDW, and corresponding characterisation tests in the fresh state, for use at an industrial scale
Mechanical and rheological characterization tests of concrete with recycled aggregates from CDW in the hardened state
Development of bituminous mixtures with recycled aggregates from CDW for use at an industrial scale
Tests for mechanical and rheological characterization of bituminous mixtures with recycled aggregates from CDW
Production at industrial scale of prototypes in concrete and bituminous mixtures with incorporation of recycled aggregates
EAF Slag aggregates characterization tests from the steelwork mill
Development of EAF Slag aggregates concrete for use on an industrial scale
Tests for mechanical and rheological characterization of concrete with EAF Slag aggregates
Development of bituminous mixtures with EAF Slag aggregates for use on an industrial scale
Tests for mechanical and rheological characterization of bituminous mixtures with EAF Slag aggregates
Production of industrial-scale prototypes with EAF Slag aggregates-incorporated concretes and bituminous mixtures
Environmental and economic LCA of the recycled aggregates from CDW and of the prototypes in concrete and in bituminous mixtures with incorporation of recycled aggregates from CDW and with EAF Slag aggregates
Development of environmental labels for recycled aggregates from CDW and for the prototypes in concrete and bituminous mixtures - Type III Environmental Product Declarations
Development of circularity passport for recycled aggregates from CDW and for the prototypes in concrete and bituminous mixtures
Benchmarking of the performance and of the environmental, economic and social advantages of the recycled aggregates from CDW and EAF Slag aggregates and of the prototypes with identical and / or competing products
Communication and dissemination plan, Website and Social Networks, technical-Scientific Publications
This project presented a high innovative character for circularity in the construction sector, presenting a high degree of valorization of CDW in higher value applications, namely in concrete and bituminous concrete, and an increase and promotion of the use of high-grade raw materials incorporation of EAF SSA. It was possible to demonstrate the industrial viability of these products, as well as understand the necessary adjustments in industrial units for their production.
The project contributed to increasing efficiency in the use of resources in the construction sector (Output 1.4) by developing innovative solutions, which include structural concrete with recycled RCD aggregates; structural concrete with EAF SSA; bituminous concrete with recycled RCD aggregates; and bituminous concrete with EAF SSA.
As this is a pilot project in this area, the project activities will continue beyond its execution period, namely state-of-the-art report and requirements and technical specifications developed in activity 2. With this report, several companies, at the nationally and beyond, they will have access to more complete information on the use of the materials studied within the scope of this project.
By testing the products on an industrial scale, the project demonstrated the industrial viability of these products and defined the necessary adjustments in the industrial units for their production.
These contributions will make it possible, at national level, to achieve higher goals for the valorization of RCD and the promotion of secondary raw materials in more noble applications than those currently occurring in Portugal.
Summary of bilateral results
The Norwegian partner - NTNU - actively participated in the Environmental and economic LCA analysis of the recycled aggregates from CDW and of the prototypes in concrete and in bituminous mixtures with incorporation of recycled aggregates from CDW and with EAF Slag aggregates, and in the Development of environmental labels for recycled aggregates from CDW and for the prototypes in concrete and bituminous mixtures - Type III Environmental Product Declarations.