Ole A Opsahl

Title: Ole A Opsahl: Innovator in Concrete Rehabilitation

Introduction

Ole A Opsahl is a notable inventor based in Drammen, Norway. He has made significant contributions to the field of concrete rehabilitation, particularly through his innovative patent. His work focuses on enhancing the longevity and durability of internally reinforced concrete structures.

Latest Patents

Ole A Opsahl holds a patent for a process aimed at rehabilitating internally reinforced concrete. This process involves the temporary application of an adherent coating of an electrolytic material to the surface areas of the concrete. The method utilizes a distributed electrode, preferably a wire grid, embedded in the coating. By applying a voltage sufficient to develop a current of about 1-5 amps/m² between the reinforcement and the distributed electrode, chloride ions are migrated from the concrete into the electrolytic coating. Once the chloride content reaches a desired level, the voltage is discontinued, and the coating along with the electrode is removed. A highly preferred material for the adherent electrolytic layer is cellulosic pulp, which can be premixed with water or other solutions and sprayed onto the surface being treated. The distributed electrode is typically made of a ferrous material to minimize the release of free chlorine gas. Additionally, the process monitors polarization of the tensioned steel to prevent hydrogen embrittlement.

Career Highlights

Ole A Opsahl is associated with Norwegian Concrete Technologies AS, where he applies his expertise in concrete rehabilitation. His innovative approach has the potential to significantly improve the maintenance and safety of concrete structures.

Collaborations

He has collaborated with notable colleagues such as Oystein Vennesland and John B Miller, contributing to advancements in the field of concrete technology.

Conclusion

Ole A Opsahl's contributions to concrete rehabilitation through his patented process demonstrate his commitment to innovation in construction technology. His work not only enhances the durability of concrete structures but also sets a precedent for future advancements in the field.