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CONCRETE LIBRARY OF JSCE NO. 31, JUNE
1998 |
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RECOMMENDATIONS
FOR DESIGN AND CONSTRUCTION OF CONCRETE STRUCTURES USING SILICA FUME IN
CONCRETE |
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(Translation from the CONCRETE LIBRARY
No.80 published by JSCE, March 1995) |
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JSCE
Research Subcommittee on Silica Fume in Concrete |
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Chairman of
Committee on Concrete of JSCE Shigeyoshi
NAGATAKI |
Chairman of JSCE
Research Subcommittee Taketo UOMOTO |
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Members |
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Syoichi INOUE Junichiro
NIWA Nobuaki
OTSUKI Tsutomu
FUKUTE Koji SAKAI |
Nobuaki
TAKAGI Hidetaka
UMEHARA Makoto HISADA Esturo SAKAI Takehiro
YAMASAKI |
Isao UJIKE Chikanori
HASHIMOTO Hirotaka KAWANO Hiroshi
MUTSUYOSHI SeiJi SOEDA |
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Members from
Sponsoring Organizations |
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Kiyohiko
UCHIDA Kenichi
MATSUI Keichi KOSUGE Kozo MURATA Masamichi
TEZUKA |
Izumi
FUJIMOTO Tatsuo KITA Takehiko
MARUYAMA Kyoichi
TANAKA Toshio
YONEZAWA |
Takeshi OTOMO Masahiko
YONEDA Yo TAKEBE Kenichi
MOTOHASHI |
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SYNOPSIS Recommendations
for the Design and Constructions of Concrete Structures Using Silica Fume in
Concrete which have been drafted for the first time in Japan, are presented. Silica
fume consists of ultrafine particles obtained when collecting dust from the
waste gas generated during the production of metallic silicon and
ferrosilicon in an arc furnace. They are ultrafine spherical particles with a
diameter of less than 1 μ m, average diameter of about 0.1μm, average
specific surface area of about 20 m2 /g by the BET method using
nitrogen adsorption, and specific gravity of about 2.2. Silica fume is the
mineral admixture in use with concrete in order to realize the high-performance
concrete structures in the same sort as fly ash and ground granulated blast
furnace slag (BFS). In this recommendations, the general requirements for
design and construction when concrete containing silica fume is applied to
general structures, marine structures, pavement, shotcrete, and precast
concrete products are described. In addition to these recommendations,
quality standards and new test method as for silica fume are reported. |
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KEYWORDS:
concrete structures, silica fume, ultrafine spherical particles, high
strength concrete, silica fume replacement ratio, Si02 content,
activity index |
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