TITLE:
Relation between Fluidability of Flyash Cement and Properties of Flyash Particles
AUTHORS:
Hideki Shimada, Akihiro Hamanaka, Takashi Sasaoka, Kikuo Matsui
KEYWORDS:
Flyash; Fluidability; Particle Size; Particle Shape
JOURNAL NAME:
Open Journal of Geology,
Vol.3 No.3,
July
11,
2013
ABSTRACT:
A large
amount of waste is produced by preparation plants. The properties of the waste
vary depending on the mineralogical contents of the mother rock in which the coal is
embedded. The waste quality depends on the method of mining and cleaning. The
waste mainly consists of clays, quartz, carbonaceous materials, mica, pyrites,
and so on. About 80% of coal-ash is now utilized and the remainder is disposed
of at disposal sites. However, the life span of disposal sites is limited, and
it is difficult to find new disposal sites. It is therefore requested that the
percentage of utilized flyash be increased in all applicable fields in Japan.
Thus, it is very desirable that cement supplemented with flyash be used as
injection material for natural/artificial openings. With this perspective in mind, we attempt to clarify how much the
size and shape of the flyash affects the properties of the injection mixture by
way of an injection test.