plastic scrap grinder machine manufacturer plastic rope making machine:Corroded rebar can lead to building collapses. Industrial hemp is a ne

  The scale of the material’s potential is massive. Steel rebar is everywhere, from sidewalks to skyscrapers. “It’s pervasive in any concrete structure. They’re just full of rebar,” says Dan Walczyk, a professor of mechanical engineering at RPI. “And it’s millions, if not billions, of dollars of construction material annually.”

  Eliminating steel from concrete construction could eliminate the corrosion risk that brought down the condo in Florida. With less corrosion, the concrete in buildings and bridges could last decades longer. “By switching the material used in one object from steel to a composite of fibers, you can drastically reduce the carbon footprint of the building industry, because you extend the lifetime of structures,” says Tsamis.

  Hemp rebar and the machinery to make it are being developed by Tsamis and Walczyk, alongside architecture student Daniel Cohen and mechanical engineering student Sharmad Joshi. Tsamis equates the technology to 3D printing, which requires both a filament and a machine to form it. The filament for hemp rebar is a combination of extracted hemp fibers wrapped in a thermoplastic that is then wound into a rope-like coil. The machine, which the team is currently building into a proof of concept, is a car-sized device that pulls in that coiled material, heats it, and consolidates it into hardened bars. Tsamis says the machine is being designed to work on-site during construction projects, allowing for the hemp rebar to be made as needed. A specially fitted die can form the rebar based on the construction project’s needs, even bending it into complex shapes that would otherwise be done on site by construction workers.

plastic scrap grinder machine manufacturer plastic rope making machine:Corroded rebar can lead to building collapses. Industrial hemp is a ne