TY - GEN
T1 - Utilization of electric arc furnace oxidizing slag in construction materials
AU - Hsieh, Hsin Han
AU - Chen, Chao Shi
AU - Chang, Shih Yin
AU - Chang, Shih Hsien
N1 - Funding Information:
This work was supported by the Ministry of Science and Technology of Republic of China (107-2625-M-006-013-).
Funding Information:
This work was supported by the Ministry of Science (107-2625-M-006-013-).
Publisher Copyright:
© 2019 Trans Tech Publications, Switzerland.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
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U2 - 10.4028/www.scientific.net/KEM.801.430
DO - 10.4028/www.scientific.net/KEM.801.430
M3 - Conference contribution
AN - SCOPUS:85071045206
SN - 9783035714913
T3 - Key Engineering Materials
SP - 430
EP - 435
BT - Composite Materials and Material Engineering III
A2 - Umemura, Kazuo
PB - Trans Tech Publications Ltd
T2 - 4th International Conference on Composite Materials and Materials Engineering, ICCMME 2019
Y2 - 19 January 2019 through 22 January 2019
ER -