Utilization of electric arc furnace oxidizing slag in construction materials

Hsin Han Hsieh, Chao Shi Chen, Shih Yin Chang, Shih Hsien Chang

研究成果: Conference contribution

摘要

The electric arc furnace oxidizing slag (EOS) is the by-product produced in the steelmaking process. The amount of EOS production through the process is very large. If it is disposed in the environment, the exposed EOS may cause severe damage to the surrounding. The EOS has the potential of replacement for construction materials. However, a large amount of lime is added to the steelmaking process to release free calcium oxide (f-CaO). The calcium hydroxide (Ca(OH)2) which produced by calcium oxide hydration after a long time may cause material volume expansion which result in the disadvantage effects on volumetric stability. According to various experiments on volumetric stability in this study, the average content of the free calcium oxide in the fine EOS is 0.64% and the average content the free calcium oxide in the coarse EOS is extremely low. The test result is determined by the ethylene glycol method. The EOS is made into cement mortar bars (water:cement:EOS = 0.5:1:3), the results showed that the cement mortar bars cracked after autoclave expansion test. The volumetric stability of the EOS is unqualified.

原文English
主出版物標題Composite Materials and Material Engineering III
編輯Kazuo Umemura
發行者Trans Tech Publications Ltd
頁面430-435
頁數6
ISBN(列印)9783035714913
DOIs
出版狀態Published - 2019
事件4th International Conference on Composite Materials and Materials Engineering, ICCMME 2019 - Tokyo, Japan
持續時間: 2019 1月 192019 1月 22

出版系列

名字Key Engineering Materials
801 KEM
ISSN(列印)1013-9826
ISSN(電子)1662-9795

Conference

Conference4th International Conference on Composite Materials and Materials Engineering, ICCMME 2019
國家/地區Japan
城市Tokyo
期間19-01-1919-01-22

All Science Journal Classification (ASJC) codes

  • 材料科學(全部)
  • 材料力學
  • 機械工業

指紋

深入研究「Utilization of electric arc furnace oxidizing slag in construction materials」主題。共同形成了獨特的指紋。

引用此