The circular economy represents the future of the industrial sector, a paradigm that encourages sharing, the reuse and recycling of materials to reduce waste and the use of primary resources. This article explores the comparison between Italy and Germany in the management of recycling of building materials, highlighting national strategies, the results obtained and future challenges.

European regulations

In the 2015, the European Commission has launched the first action plan for the circular economy, followed by an update in 2020 focused on product sustainability and waste reduction. New rules on packaging aim to improve their design to encourage reuse and recycling, representing a crucial step towards sustainable waste management.

Italia: Progress and Challenges

Italy has adopted the “National Strategy for the Circular Economy” In the 2021, aligning with European directives. According to the Circular Economy Report of the Polytechnic of Milan, In the 2022 il 57% of Italian companies have implemented circular practices, despite the 65% still shows resistance due to regulatory uncertainties and lack of clear government incentives. However, Italy has achieved a notable 73,3% of packaging recycling in 2021, exceeding the European target of 65% set for 2025. This result highlights the country's commitment to more sustainable waste management.

Germania: Towards Greater Circularity

Germany is developing one “National Strategy for the Circular Economy” with the aim of protecting the environment and reducing pollution. Although the recycling rate in the 2022 was of 63%, the German economy remains predominantly linear, with only the 12% of circular use of materials. Future projects could raise this rate up to 22%, highlighting potential for significant improvement. Germany, with its strong industrial base and advanced technologies, has the potential to become a leader in the adoption of circular practices.

Impact on the Construction Sector

The construction sector is one of the main causes of environmental impact, and recycling building materials is key to mitigating these effects. Investing in recycling technologies and infrastructure can improve the sustainability and efficiency of the construction sector. Both countries are making progress, but much remains to be done. Collaboration, innovation and constant commitment are essential to drive the transition towards a sustainable future.

Methods for the Effective Recycling of Construction and Demolition Materials (CWD)

Recycling of construction and demolition materials (CWD) it is a crucial component for reducing the environmental impact of the construction sector. There are several ways and strategies that can be implemented to effectively recycle these materials, thus contributing to a circular economy. Below are some of the best practices:

  1. On-site separation: during the demolition phase, it is essential to separate the various types of materials directly on site. This process includes the splitting of cement, metal, wood, plastic and glass. Source separation increases the purity of recycled materials, making them easier to reuse. For further information, visit the site European Commission on Construction and Demolition Waste.
  2. Crushing and Sieving Technologies: Using advanced crushing and sieving technologies allows CWD waste to be reduced into smaller components, facilitating their recycling. These materials can later be used as recycled aggregates for new construction projects. More details are available at Construction & Demolition Recycling Association.
  3. Reuse of Materials: many building materials can be reused without the need for transformation. For example, bricks, wood and steel can be recovered and reused in new buildings. Direct reuse not only conserves resources but also reduces costs. Additional information can be found at Reuse Network.
  4. Use of Recycled Aggregates: recycled aggregates derived from crushed concrete can be used in new construction projects, such as roads and foundations. These aggregates are a valid alternative to virgin materials, contributing to the reduction of the extraction of new resources. Further information is available at Aggregain.
  5. Incorporation of Recycled Materials into Design Projects: architects and engineers should be encouraged to incorporate recycled materials into their designs. The use of recycled components must be planned from the early stages of design to maximize efficiency and positive environmental impact. Visit Architectural Digest for examples of sustainable design.
  6. Incentives and Regulations: governments can incentivize CWD recycling through tax breaks, subsidies and regulations that mandate the separation and reuse of materials in construction projects. Regulations may establish minimum percentages of recycled materials for use in new construction. For more details, consult the Ministry of the Environment and Protection of Land and Sea.
  7. Training and awareness: promote training and awareness among construction sector operators on the importance and benefits of CWD recycling. Workshop, Seminars and information campaigns can raise awareness and improve waste management practices. For educational resources, visit Green Building Council Italia.
  8. Material Exchange Platforms: create online platforms where construction companies can trade or sell recovered building materials. These platforms facilitate the reuse of materials, reducing the need for new products. An example of such a platform is Excess Materials Exchange.
  9. Research and development: invest in research and development of new technologies and methodologies for recycling CWD. Innovation can lead to more effective and efficient solutions, improving recycling rates and the use of recovered materials. For the latest news on research, visit ScienceDirect.

Recycling of construction and demolition materials represents one of the main challenges for the construction sector, but also a significant opportunity to reduce environmental impact and promote sustainability where government collaboration, industry and community is essential to realize this goal and build a more sustainable future.

Conclusion

Both Italy and Germany are making significant progress towards a circular economy, but there are still many challenges to face, especially in the field of recycling of building materials. The transition towards a circular economy model requires joint efforts from governments, businesses and citizens. Only through collaboration and innovation can we hope to create a sustainable future.

And you, Have you ever thought about what impact the transition from our current economy to a circular model of production and consumption could have on the environment?? Change is in our hands, and every small step counts towards building a more sustainable world.

Martina Di Labbio Civil Engineer