Biocomposites

Researchers say hemp-based rebar could replace steel in construction

Share this:

Researchers from Rensselaer Polytechnic Institute (USA) say they have developed a hemp‐based rebar reinforcing technology for cement construction.

Alexandros Tsamis, assistant professor of architecture and associate director of the Center for Architecture Science and Ecology, and Dan Walczyk, professor of mechanical engineering and director of the Manufacturing Innovation Center, say the hemp-based natural fiber-reinforced thermoplastic rebar could replace steel in concrete buildings and infrastructure projects, eliminating common problems with corrosion while extending the structures’ lifetimes.

Rebar is used to construct skeletal frameworks in conventional cement buildings to provide tensile strength, which concrete lacks.

Strong as steel

The research team said preliminary study of the material has shown strength characteristics comparable to steel, and potential for significant reduction in greenhouse gas emissions.

The research is among the first projects to come from Rensselaer’s new Institute for Energy, Built Environment, and Smart Systems (EBESS), an interdisciplinary initiative in design, engineering, and business. EBESS is developing a broad plan for a sustainable and economically viable hemp industry that can address issues related to climate change in the conventional built environment.

Technologies are probed

Rensselaer researchers say they are working on several innovative and cost‐effective hemp processing technologies which gave rise to the development of the hemp rebar.

Those projects include the development of decortication technology that can separate hemp fibers from the stem’s woody inner core without adversely affecting the materials’ mechanical properties; a sustainable degumming method; and new hemp bio-composite processing methods.

Rensselaer Polytechnic Institute is a private research university in Troy, New York.

Recent Posts

Accelerator backs German startup developing ‘critical link’ to capitalize on carbon

German startup HempConnect has been selected for an EU-backed program that helps early-stage carbon dioxide…

May 16, 2022

U.S economist sees ‘huge potential for fiber in the global economy’

INTERVIEW: An economist and expert in supply chain and operations, Beau Whitney is the founder…

May 14, 2022

London-based trading platform expands options for access to network

Hemp and medical cannabis trader Canxchange has added a networking service to its commodities-based platform,…

May 10, 2022

Proper laws could double Italy’s smokable hemp revenues, study finds

Italy is losing out on a potential half-billion euro industry by failing to establish enlightened…

May 9, 2022

‘The real opportunity in hemp is not in cultivation, it is in innovation’

INTERVIEW: An avid student and practitioner of innovative approaches to soil and water quality management,…

May 6, 2022

Five companies targeted in first FDA warnings over delta-8 THC products

The U.S. Food and Drug Administration (FDA) today warned five companies over what it calls…

May 4, 2022