Research on Continuously Concrete-cast Pavement via Vacuum Preloading Technique

As an innovative approach,the vacuum precompression technique in concrete processing aims to strengthen the concrete's intensity,reduce shrinkage and deformation,avoid early cracks and increase its durability by dehydrating and intensifying unhardened concrete through vacuumization and precompression.This paper analyzes its feasibility as well as a serial of physical,hydraulic and chemical mechanism.Applying this technique in expressway pavement,we can construct continuous non-reinforced concrete road as long as 200 meters.