Slag powder and method for producing slag powder

摘要

PROBLEM TO BE SOLVED: To provide a slag powder capable of suppressing reduction of reaction activity of the slag powder and being used for a blast furnace cement having suppressed reduction of compressive strength of a cured article regardless of presence or absence of a deteriorated raw material slag and a manufacturing method of the slag powder.SOLUTION: This invention relates to a slag powder having a Blaine specific surface area of 4000-7000 cm/g, a 24 μm sieve residual component measured by a laser diffraction type particle size distribution measurement method of 30 vol.% or less. There is provided a manufacturing method of the slag powder including a process of preparing a raw material slag with a Blaine specific surface area of 4000 cm/g, a 24 μm sieve residual component measured by a laser diffraction type particle size distribution measurement method of 30 vol.% or less to obtain the slag powder.SELECTED DRAWING: None