2009 Fiscal Year Final Research Report
Durability improvement of steel-making slag concrete
| Project/Area Number |
19560461
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Civil engineering materials/Construction/Construction management
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| Research Institution | Okayama University |
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Principal Investigator |
AYANO Toshiki Okayama University, 大学院・環境学研究科, 教授 (10212581)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 鉄鋼スラグ水和固化体 / 凍結融解抵抗性 / 乾燥収縮ひずみ / 水酸化カルシウム / ポゾラン / 全水量 |
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| Research Abstract |
Steel-making slag concrete is made of ground granulated blast furnace slag and hot metal pretreatment slag that are by-products at ironworks. This type of construction materials is called environmental conscious material in Japan. This study shows that the strength of steel-making slag concrete depends on pH of steel-making slag concrete after mixing. It also shows that the resistance to carbonation and steel rod corrosion of steel-making slag concrete is high for a long time due to calcium hydroxide leaching from hot metal pretreatment slag. However, resistance to freezing and thawing of steel-making slag concrete is quite low. In this paper, the method to enhance the resistance to freezing and thawing is shown.
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