26 Sep '17
Researchers at the Far Eastern Federal University (FEFU) in Vladivostok have developed and patented a new construction technology enabling the strengthening of composite reinforcement with moss-based carbon nanotubes (CNTs).
Composite reinforced concrete products tend to demonstrate high deformability and wider than standard crack growth as compared to steel reinforced samples. The FEFU engineers decided to strengthen the structure of composite reinforcement using nanotechnology. At the heart of the new reinforcement technology is a multitude of high-strength continuous fibers, Alexander Becker, director of the FEFU Engineering School and one of the technology developers, was quoted as saying.
According to the research team, the new CNT-based reinforcement displays an improved tensile resistance (up 75-97% compared to conventional solutions) and a higher modulus of elasticity under compression/stretching (up 7-15% and more).
The CNTs are made from brown sphagnum moss (Sphagnum fuscum) that grows in the marshes of the Lower Amur region. This kind of moss is widely used in construction as it has low thermal conductivity and does not decompose for long years.