Abstract
This research reports the study on the relationship between paste film and mortar film thicknesses and the need for centrifugal compaction and segregation to propose mix proportion design methods for stiff-consistency high strength concrete with the aim of suppressing segregation due to centrifugal compaction. The minimum thickness of paste film and mortar film for centrifugal compaction tended to increase with the decrease in the water cementitious material ratio. The relationship between paste film thickness and mortar film thickness that enabled satisfactory centrifugal compaction was found. It was also comfirmed that the segregation of coarse aggregate was mutually related to the paste film thickness and the mortar film thickness. Also, the coarse aggregate segregation condition after centrifugal compaction could be predicted from arbitrary thicknesses of paste film and mortar film.
