Sustainable construction materials from screen rejects
Utilize screen rejects from paper mills, including plastic, glass, and fiber, in low-cost construction materials for molded and 3D-printed systems. This approach supports circular economy principles and sustainable building practices.
Overview
This innovative solution aims to repurpose screen rejects from paper mills, which consist of plastic, glass/sand, and fiber, into low-cost construction materials. This approach aligns with circular economy principles by transforming waste into valuable resources for the construction industry. The proposed materials can be used in the preparation of mixture slurry for molded or 3D-printed systems, emphasizing sustainability and affordability in construction.
Technical specifications
Key features:
- Utilization of screen rejects with minimal processing to reduce costs
- Incorporation of recycled fibers and wood residues to enhance material stability and reduce shrinkage and cracking
- Application in 3D-printed earthen-mixtures and traditional molded construction materials
- Testing of slurry stability, mechanical properties, and durability for optimal performance
Development process:
- Particle size distribution and material types will be monitored
- Hyper spectral imaging will be employed for material analysis
- Rheology and mechanical properties will be tested to design suitable construction materials
- Dimensional stability and durability assessments will guide material optimization
Technology readiness level
This technology is currently at TRL 4, having been validated at the laboratory level. Future steps include larger-scale demonstrations and further material optimization based on performance testing.
About Oregon State University
Oregon State University is a comprehensive public research university and Oregon’s land‑grant institution, with a main campus in Corvallis and a statewide footprint. Industry partners tap a statewide Extension network and county offices to pilot and scale solutions with communities and companies across Oregon. A coastal marine science campus in Newport anchors ocean research and provides access to open‑ocean wave‑energy test ranges and grid‑connected infrastructure under development nearby, enabling sea‑to‑shore prototyping. Field stations and university‑managed research forests support long‑term trials and product validation in real‑world environments. A dedicated technology transfer office and the OSU Advantage programs—including the Advantage Accelerator—streamline IP, licensing, startup formation, and industry agreements.
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