| Co-Investigator(Kenkyū-buntansha) |
CHIKADA Takao Nippon steel Blast-Furnace Slag Cement Co.Ltd, Technical Research Center, Director, 技術センター, 所長
SOEDA Masashi Fukuoka University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (50148871)
MATSUMOTO Susumu Kagoshima University, Faculty of Engineering, Professor, 工学部, 教授 (00041567)
KITAMURA Ryosuke Kagoshima University, Faculty of Engineering, Professor, 工学部, 教授 (70111979)
YAMAGUCHI Toshinobu Kagoshima University, Faculty of Engineering, Research Associate, 工学部, 助手 (50305158)
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| Budget Amount *help |
¥15,400,000 (Direct Cost: ¥15,400,000)
Fiscal Year 2004: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 2003: ¥11,200,000 (Direct Cost: ¥11,200,000)
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| Research Abstract |
1.Material Database
For the Shirasu samples collected from 37 places in Kagoshima prefecture, properties and characteristics of Shirasu as an aggregate for concrete were investigated, and according to the results, a data base and a Shirasu-Map, were prepured.
2.Test Methods
As the tests of specific gravity, water absorption, and fineness modulus for shirasu aggretate, new test methods considering the propery of Shirasu were proposed.
3.Construction
"Recommendation for design and construction of concrete using Shirasu aggregate" including preparation, mixdesign, mixing, placing, curing, and inspection, for Shirasu concrete was specified, according to the experimental results, in both labratry and construction site.
4.Durability
Exporsure tests of Shirasu conrete were performed, to examine its long term durability, especially concerning to neutralization, penetration of chloride ion, sulfate-resistance, and reactibity of ASR.
5.Practical Use
Depending on above examinations, some practical trials, such as concrete in the foundation of a bridge structure constructed in hot spring environment and concrete for precast PC girder,were realized. Addition to that, some special applicability, for such as self-compacting concrete and hardened coal-ash material, were examined.
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