Hemp-based rebar may potentially be used in place of steel in construction, according to experts.
Researchers at Rensselaer Polytechnic Institute in Troy, New York (USA) have created a hemp-based rebar reinforcement method for concrete construction.
The hemp-based natural fiber-reinforced thermoplastic rebar may replace steel in concrete buildings and infrastructure projects, according to 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.
In conventional cement structures, rebar is used to make structural skeletons with tensile strength that concrete lacks.
As durable as steel
According to the team, early investigation of the material has indicated strength properties comparable to steel and potential for a large reduction in greenhouse gas emissions.
The study is one of the first projects to emerge from Rensselaer’s new Institute for Energy, Built Environment, and Smart Systems (EBESS), an interdisciplinary collaboration in design, engineering, and business. EBESS is developing a comprehensive strategy for a sustainable and economically viable hemp industry that can address concerns related to climate change in the conventional built
Probe is put to the test
Rensselaer researchers are working on a number of unique and low-cost hemp processing techniques, according to which the hemp rebar was created.
Hemp processing projects include the development of decortication technology that does not harm materials’ mechanical properties, a sustainable degumming approach, and new hemp bio-composite manufacturing methods. Rensselaer Polytechnic Institute is a private research university in Troy, New York.
A Nike classic made of hemp
Nike is expected to bring out a version of its Blazer Mid ’77 shoe in hemp weave with a recycled sole in the near future. On the tongue, the leisure shoes are emblazoned with “HEMP.”
With the Blazer Mid ’77, Nike is displaying their crafty side, as hemp is used throughout the shoe’s construction.
The upper is woven at nearly every point, while the sole is not. The apparent construction instead appears to be made of sustainable materials, as indicated by the black specks scattered across the surface. Above, the sections are threaded in distinct hues: a bright blue Swoosh, a reddish orange heel tab, and a pastel yellow forward reinforcement. Each fixture adjacent, such as eye stays, base, toe cap, and so on, is finished in a neutral white similar to that of the lining, tongue, and strings.
This Nike Air Max 97 Low “HEMP” is on the tongue and has a circular design logo on the heel, which will be released soon.