Recycled and Upcycled Construction Materials

Detailed overview of innovation with sample startups and prominent university research


What it is

Recycled and upcycled materials in construction encompass a wide range of products created by repurposing waste materials into new building components or aggregates. Recycling involves processing waste materials to create similar products (e.g., crushed concrete as aggregate), while upcycling transforms waste into new, higher-value materials (e.g., fly ash in concrete mixes).

Impact on climate action

Recycled and upcycled materials in low-carbon construction drastically reduce environmental footprint. By diverting waste from landfills and minimizing resource extraction, they curtail emissions. This innovation promotes circular economy principles, fostering sustainable development and mitigating climate change by diminishing construction’s carbon intensity.

Underlying
Technology

  • Deconstruction and Material Recovery: Careful deconstruction of buildings allows for the separation and recovery of valuable materials like wood, steel, and concrete.
  • Waste Processing and Sorting: Advanced sorting technologies, including robotics and AI-powered systems, are crucial for separating and processing different types of waste for recycling.
  • Material Transformation and Upcycling: Innovative technologies are being developed to transform waste materials into new products with enhanced properties.

TRL : Varied, ranging from 5-6 (pilot-scale demonstration) to 8-9 (widely deployed and commercially available).


Prominent Innovation themes

  • Waste-Based Bricks and Blocks: Companies are creating innovative bricks and blocks using recycled aggregates from construction and demolition waste, industrial byproducts like fly ash and slag, or even plastic waste.
  • Recycled Concrete Aggregates: Crushed concrete from demolished structures can be used as a replacement for virgin aggregates in new concrete mixes, reducing the need for quarrying.
  • Upcycled Glass Aggregates: Waste glass can be processed into aggregates for use in lightweight concrete, offering enhanced thermal insulation and acoustic properties.
  • Wood-Plastic Composites: Combining recycled wood fibers with recycled plastic creates durable and versatile composites suitable for decking, fencing, and other construction applications.

Other Innovation Subthemes

  • Deconstruction Techniques for Material Recovery
  • Advanced Waste Sorting Technologies
  • Innovative Upcycling Methods
  • Waste-Based Bricks and Blocks
  • Recycled Concrete Solutions
  • Upcycled Glass Applications
  • Wood-Plastic Composite Development
  • Sustainable Asphalt Solutions
  • Recycled Steel Reinforcement
  • Upcycled Ceramic Tiles
  • Bio-Based Insulation Materials
  • Recycled Plastic Roofing
  • Sustainable Flooring Solutions
  • Eco-Friendly Paints and Coatings
  • Recycled Aggregate Concrete
  • Upcycled Metal Structures
  • Waste-Based Plasterboard Production
  • Recycled Rubber Paving
  • Upcycled Textile Insulation
  • Sustainable Construction Adhesives

Sample Global Startups and Companies

  • StoneCycling (Netherlands):
    • Technology Enhancements: StoneCycling focuses on developing innovative building materials made from recycled construction and demolition waste. They employ advanced processing techniques to transform these materials into durable and aesthetically pleasing products.
    • Uniqueness: What sets StoneCycling apart is its commitment to circularity and sustainability in the construction industry. They offer a diverse range of customizable materials with unique textures and colors, providing architects and builders with eco-friendly alternatives to traditional building materials.
    • End-User Segments: StoneCycling’s products cater to architects, developers, and construction companies seeking sustainable building solutions. Their materials are suitable for a wide range of applications, including residential, commercial, and institutional projects.
  • Kenoteq (UK):
    • Technology Enhancements: Kenoteq specializes in producing construction bricks using upcycled materials, particularly clay bricks made from construction and demolition waste. They utilize innovative manufacturing processes to create high-quality, sustainable bricks with reduced environmental impact.
    • Uniqueness: Kenoteq stands out for its focus on upcycling waste materials to produce durable and energy-efficient bricks for the construction industry. Their products offer a cost-effective and environmentally friendly alternative to traditional clay bricks, helping to reduce landfill waste and carbon emissions.
    • End-User Segments: Kenoteq’s bricks are targeted towards architects, contractors, and developers seeking sustainable building materials for residential, commercial, and infrastructure projects. Their products are suitable for both new construction and renovation projects.
  • ByFusion (USA):
    • Technology Enhancements: ByFusion specializes in transforming plastic waste into construction blocks through a proprietary process that does not require additional binders or additives. Their innovative technology allows them to create durable and modular building blocks from a variety of plastic waste streams.
    • Uniqueness: ByFusion offers a unique solution to the global plastic waste problem by converting plastic waste into valuable construction materials. Their blocks are lightweight, easy to assemble, and resistant to water and chemicals, making them suitable for various construction applications.
    • End-User Segments: ByFusion’s building blocks target a wide range of end-users, including architects, builders, and governments looking for sustainable alternatives to traditional construction materials. Their products can be used in diverse construction projects, from affordable housing to disaster relief efforts.

Sample Research At Top-Tier Universities

  • Delft University of Technology:
    • Technology Enhancements: Researchers at Delft University of Technology are pioneering the development of advanced recycling and upcycling techniques for low-carbon construction materials. They are exploring innovative methods to process waste materials such as plastic, glass, and concrete into high-quality building components.
    • Uniqueness of Research: Delft’s research stands out for its holistic approach to sustainable construction, integrating material science, engineering, and design principles. They are investigating how recycled and upcycled materials can be incorporated into building systems to enhance structural performance, durability, and energy efficiency.
    • End-use Applications: The research at Delft University of Technology has implications for various construction projects, including residential buildings, commercial complexes, and infrastructure projects. By utilizing recycled and upcycled materials, architects and engineers can create low-carbon structures that reduce environmental impact and contribute to the circular economy.
  • EPFL (Swiss Federal Institute of Technology Lausanne):
    • Technology Enhancements: EPFL researchers are pushing the boundaries of material science and engineering to develop novel low-carbon construction materials from recycled and upcycled sources. They are exploring new processing techniques, such as additive manufacturing and bio-based binders, to create sustainable alternatives to traditional building materials.
    • Uniqueness of Research: EPFL’s research is characterized by its interdisciplinary approach, combining expertise in materials science, chemistry, and environmental engineering. They are investigating the environmental and economic feasibility of using recycled and upcycled materials in large-scale construction projects.
    • End-use Applications: The research at EPFL has applications in diverse construction sectors, including residential, commercial, and industrial buildings. By developing low-carbon construction materials, EPFL aims to address the growing demand for sustainable building solutions and reduce the carbon footprint of the built environment.
  • University of Cambridge:
    • Technology Enhancements: Researchers at the University of Cambridge are at the forefront of developing advanced manufacturing processes for recycled and upcycled construction materials. They are leveraging cutting-edge technologies such as 3D printing, robotic fabrication, and digital modeling to optimize the production of low-carbon building components.
    • Uniqueness of Research: Cambridge’s research stands out for its focus on scalable and cost-effective solutions for sustainable construction. They are exploring how recycled and upcycled materials can be integrated into existing construction practices to improve efficiency, reduce waste, and lower carbon emissions.
    • End-use Applications: The research at the University of Cambridge has practical implications for a wide range of construction projects, from small-scale renovations to large-scale infrastructure developments. By incorporating recycled and upcycled materials, construction companies can meet sustainability targets and comply with regulatory requirements while delivering high-quality, environmentally friendly buildings.

commercial_img Commercial Implementation

Many recycled and upcycled construction materials are already commercially available and being used in a wide range of projects. Recycled concrete aggregates are commonly used in infrastructure projects, while waste-based bricks and blocks are gaining traction in residential and commercial buildings. This trend signifies a growing shift towards sustainable and circular practices in the construction industry.