Atlas Building Composites uses waterless recycling, fiberglass and large-scale 3D printing to convert plastic waste into structural components for buildings and infrastructure.
A technology developed with support from the Massachusetts Institute of Technology (MIT) is creating a new pathway for converting discarded plastic into durable construction materials. MIT spinout Atlas Building Composites has developed an AI-powered robotic manufacturing platform that processes single-use plastics into composite components for buildings and infrastructure.
The process begins by shredding discarded plastic from items such as water bottles and other single-use products. The material is then melted and combined with American-made fiberglass to create a stronger composite. Atlas subsequently uses large-scale 3D printing to manufacture structural components including trusses, decks and foundations.
One of the key features of the technology is its waterless recycling process. Unlike conventional recycling operations that can require significant amounts of water and specialised infrastructure, Atlas’ approach is designed to process low-grade plastic without water. The company believes this could make it possible to establish smaller manufacturing facilities closer to where plastic waste is generated and construction materials are needed.
The technology has already moved beyond laboratory development into real-world infrastructure. Atlas supplied recycled composite trusses to the U.S. Army Corps of Engineers for a 40-foot bridge constructed in a Massachusetts wetland. The bridge was installed in less than a day, demonstrating the potential for the material to be used in practical construction applications.
MIT research has also demonstrated the structural potential of the 3D-printed composite trusses. According to MIT, large trusses can be produced in under 13 minutes and have been shown to support more than 4,000 pounds, exceeding key building standards. Atlas says its factory systems are being designed to produce approximately 150 to 200 pounds of components per hour.
The company is targeting applications including foundations, floors, walls and roofs, while existing products have already been used for barns, sheds, decks and docks. By converting plastic waste into long-lasting structural components, the approach aims to keep discarded material in productive use for extended periods rather than sending it to landfills or other disposal routes.
Atlas was established to commercialise research originating from MIT’s Home Architecture for Universal Sustainability (MIT HAUS) initiative. The company’s founders envision deploying robotic production systems in different regions, allowing local facilities to use locally available plastic waste and manufacture construction components closer to the point of use.
The development comes as the construction sector looks for alternatives that can reduce material waste while meeting demand for new housing and infrastructure. For the plastics industry, the technology also demonstrates a potential higher-value application for low-grade plastic that may be difficult to recycle through conventional methods.
By combining plastic recycling, composite manufacturing and large-scale additive manufacturing, Atlas Building Composites is seeking to create a circular pathway between plastic waste and construction. The company is now working toward expanding the technology through local manufacturing partnerships in the US and internationally.