Patent for new wood composites technology assigned to UMaine

September 12, 2001

ORONO, Maine -- The University of Maine has received a patent for a new wood composites technology developed at the Advanced Engineered Wood Composites Center (AEWC) that promises to reduce the cost and increase the strength of building materials made with fiber-reinforced polymers (FRP). The U.S. Patent Office assigned the patent to UMaine on August 28.

The technology was developed by Habib Dagher and Steve Shaler, director and associate director respectively at AEWC, and by Beckry Abdel-Magid, AEWC engineer and a professor at Winona State University in Minnesota. Their invention allows common adhesives to be used to bond layers of wood with a FRP panel.

The technology is known as RESPI™, which stands for resin-starved pultruded-impregnated. RESPI™ technology provides a simple, inexpensive, commercially viable method for reinforcing structural wood products such as beams, I-joists or flat panels (plywood).

The inventors have performed pilot studies of RESPI™ over the past five years and have found that a panel reinforcement of 2% of a laminated beam by volume can increase the bending strength of the beam by over fifty percent. "The Center has been responsible for innovative bridge and pier construction using composite wood materials all over the state in over a dozen demonstration projects" says Dagher. "Two projects, a pier in Bar Harbor and a bridge in Medway, both utilize RESPI™ panels. We are very excited that this cost-efficient, effective technology developed in University of Maine laboratories has already benefited Maine's communities."

In addition to increasing the strength, stiffness and ductility of wood composites, RESPI™ reinforced beams allow for longer spans, lower depths and lighter structures.

The AEWC was established by UMaine to develop the underlying science and engineering principles needed to produce low-cost, high-performance materials made of wood and non-wood components. These materials promise to be less expensive and more effective than concrete and steel, and they serve the state's economy by adding value to low grade wood and wood by-products which have heretofore been underutilized, if not totally discarded.

University of Maine

Related Technology Articles from Brightsurf:

December issue SLAS Technology features 'advances in technology to address COVID-19'
The December issue of SLAS Technology is a special collection featuring the cover article, ''Advances in Technology to Address COVID-19'' by editors Edward Kai-Hua Chow, Ph.D., (National University of Singapore), Pak Kin Wong, Ph.D., (The Pennsylvania State University, PA, USA) and Xianting Ding, Ph.D., (Shanghai Jiao Tong University, Shanghai, China).

October issue SLAS Technology now available
The October issue of SLAS Technology features the cover article, 'Role of Digital Microfl-uidics in Enabling Access to Laboratory Automation and Making Biology Programmable' by Varun B.

Robot technology for everyone or only for the average person?
Robot technology is being used more and more in health rehabilitation and in working life.

Novel biomarker technology for cancer diagnostics
A new way of identifying cancer biomarkers has been developed by researchers at Lund University in Sweden.

Technology innovation for neurology
TU Graz researcher Francesco Greco has developed ultra-light tattoo electrodes that are hardly noticeable on the skin and make long-term measurements of brain activity cheaper and easier.

April's SLAS Technology is now available
April's Edition of SLAS Technology Features Cover Article, 'CURATE.AI: Optimizing Personalized Medicine with Artificial Intelligence'.

Technology in higher education: learning with it instead of from it
Technology has shifted the way that professors teach students in higher education.

Post-lithium technology
Next-generation batteries will probably see the replacement of lithium ions by more abundant and environmentally benign alkali metal or multivalent ions.

Rethinking the role of technology in the classroom
Introducing tablets and laptops to the classroom has certain educational virtues, according to Annahita Ball, an assistant professor in the University at Buffalo School of Social Work, but her research suggests that tech has its limitations as well.

The science and technology of FAST
The Five hundred-meter Aperture Spherical radio Telescope (FAST), located in a radio quiet zone, with the targets (e.g., radio pulsars and neutron stars, galactic and extragalactic 21-cm HI emission).

Read More: Technology News and Technology Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to