THE SPUN PRESTRESSED CONCRETE PRODUCT

The spun concrete products (poles and piles) offers an improved technology that combines the benefits of centrifugal casting with those of prestressing and high strength concrete in the manufacturing process. Spinning is the highlight of the manufacturing process. During spinning the fresh concrete is subjected to very high centrifugal forces that compact the material against the interior of the steel mold and expel excess water in the mix. The overall porosity of the material is therefore reduced, and as a result the hardened concrete is exceptionally dense and is high strength. The higher strength is attributed mainly due to the lower w/c and the higher density of the concrete after spinning.