混和剤

[V-301] Consideration of influence that internal structure of concrete gives to C-S-H type accelerator

*深澤 英将¹、杉山 知己²、伊代田 岳史³ (1. 芝浦工業大学大学院、2. BASFジャパン株式会社、3. 芝浦工業大学)

Keywords:Admixture, C-S-H type accelerator, Air permeability test, Anisotropy

It has not been clarified how the difference in space such as the pore structure in concrete affects the expression of the effect of the C-S-H type accelerator.This paper changed the internal structure of concrete and examined what kind of influence there is on the expression of the effect of the C-S-H type accelerator.As a result, it was found that the C-S-H type accelerator densifies the pores in the concrete even if the water-cement ratio and the aggregate amount change.The reason is considered to be that it acts on the paste part and the bulk part in the concrete.