粉化転炉スラグの路盤材料としての利用に関する基礎的研究

フォーマット:

論文

責任表示:

島居, 和之 ; 川村, 満紀 ; 枷場, 重正 ; 五十嵐, 心一

言語:

日本語

出版情報:

日本材料学会, 1985-04-15

著者名:

• 島居, 和之
• 川村, 満紀
• 枷場, 重正
• 五十嵐, 心一

掲載情報:

材料=Journal of the Society of Materials Science, Japan

ISSN:

0514-5163      

巻:

34

通号:

379

開始ページ:

375

終了ページ:

380

バージョン:

publisher

概要:

金沢大学理工研究域環境デザイン学系<br />Recently, the basic oxygen furnace slag produced in a new steel-making process aiming at energy and resource saving is being as fine particles under 5 mm size because it breaks down itself due to its high conten … t of f-CaO. In future, this type of basic oxygen furnace slag is anticipated to replace the conventional basic oxygen furnace slag. The objective of this study was to the applicability of this powdered basic oxygen furnace slag as a subbase material. Firstly, the changes in physical and chemical properties, the surface texture and the hydrated products of the basic oxygen furnace slag naturally weathered outdoors were determined by X-ray diffraction, differential thermal analysis (DTA) and SEM-EDXA analysis. Secondly, the strength test, the CBR test and the expansion test of the compacted basic oxygen furnace slag mixtures were carried out in order to clarify the strength characteristics of the powdered basic oxygen furnace slag as a subbase material and the effect of weathering outdoors on reducing its unfavorable self-deterious properties. The main results obtained are summarized as follows; (1) The major compounds of the powdered basic oxygen furnace slag were β-C_2S, C_2F, C_2S-C_3P, Wustite and a considerably large amount of f-Cao and Ca(OH)_2. (2) In the powdered basic oxygen furnace slag naturally weathered outdoors, the hydration of β-C_2S and f-Cao slowly progressed with age, resulting in the formation of C-S-H gel, Ca(OH)_2 and CaCO_3 on the surface of particles. (3) The powdered basic oxygen furnace slag became a stable material not showing self-deterious property by weathering outdoors for about three months, and thus it can be used as a subbase material. 続きを見る

URL:

http://hdl.handle.net/2297/12306