Paul H Lehoux

Title: Paul H Lehoux: Innovator in Pozzolan Blends

Introduction

Paul H Lehoux is a notable inventor based in Kingston, Canada. He has made significant contributions to the field of construction materials, particularly through his innovative work with pozzolan blends. His inventions aim to enhance the properties of hydraulic cement, making them more efficient and effective.

Latest Patents

Lehoux holds a patent for a unique pozzolan blend. This invention involves an unground, fine pozzolan with a sulphur content ranging from 5 to 25 wt. % SO.sub.3. This pozzolan is used in admixture with Portland cement to create a blended hydraulic cement that exhibits increased compressive strength characteristics. Additionally, it extends the retardation time without requiring the separate addition of gypsum. The pozzolan can also be mixed with fly ash to reduce the Portland cement content while utilizing Class C fly ash. The pozzolan is derived from the reaction of coal flue gases with an atomized vapor of slaked lime.

Career Highlights

Lehoux is associated with Lafarge Canada Inc., a leading company in the construction materials industry. His work has contributed to advancements in cement technology, particularly in improving the sustainability and performance of construction materials.

Collaborations

Throughout his career, Lehoux has collaborated with notable colleagues, including Donald Stephen Hopkins and David B Oates. These collaborations have further enriched his work and contributed to the development of innovative solutions in the field.

Conclusion

Paul H Lehoux is a distinguished inventor whose work in pozzolan blends has made a significant impact on the construction industry. His innovative approaches continue to enhance the performance and sustainability of hydraulic cement.