Akio Himeji

Title: Akio Himeji: Innovator in Underwater Concrete Placement

Introduction

Akio Himeji is a notable inventor based in Machida, Japan. He has made significant contributions to the field of construction, particularly in the method of placing concrete underwater. His innovative approach has improved the efficiency and effectiveness of underwater concrete placement.

Latest Patents

Himeji holds a patent for a "Method and apparatus for placing concrete under water." This invention presents an improved method for placing concrete underwater in an easy and effective manner. The method involves immersing a tremie tube equipped with a special valve device into water, transferring concrete through the tube, and closing the valve while keeping the outlet submerged in the deposited concrete. The valve device features a cylindrical elastic valve member that, when supplied with pressurized fluid, folds and expands to close the concrete passage of the tremie tube. Additionally, the invention proposes a concrete surface detecting device to measure the state of the deposited concrete.

Career Highlights

Himeji is associated with Shimizu Construction Co., Ltd., a prominent company in the construction industry. His work has been instrumental in advancing construction techniques, particularly in challenging environments such as underwater settings.

Collaborations

Himeji has collaborated with notable coworkers, including Tadahiko Okumura and Yasuo Kajioka. Their combined expertise has contributed to the development of innovative construction methods.

Conclusion

Akio Himeji's contributions to underwater concrete placement demonstrate his commitment to innovation in the construction industry. His patented methods and collaborative efforts continue to influence construction practices today.