A study on Stabilization of Electric Arc Furnace Slag

Ting Kai Hu; Wei Hao Lee; Ta Wui Cheng; Chih Ta Tsai; Chang Ching Ho; Yu Kang Ling

A study on Stabilization of Electric Arc Furnace Slag

Ting Kai Hu, Wei Hao Lee, Ta Wui Cheng, Chih Ta Tsai, Chang Ching Ho, Yu Kang Ling

永續環境實驗所

研究成果: Paper › 同行評審

摘要

The electric arc furnace oxidizing slag is produced by the steel plant as an industrial by-product, with a production of 100 million tons in Taiwan annually. The purpose of this study was to stabilize the EAF oxidizing slag by using oxalic acid as a replacement for fine aggregates in cement mortar process and using geopolymer technology to prevent oxidizing slag expansion. The experimental results showed using oxalic acid could significantly stabilize the EAF oxidizing slag and the mechanical properties. On the other hand, the EAF oxidizing slag in the geopolymer system could completely inhibit the expansion. The test samples in geopolymer system had higher compressive strength than cement system. The 28 days compressive strength of geopolymer system and cement system were 30MPa and 22MPa, respectively. These results gave encouragement that the stabilized EAF oxidizing slag could be replaced as a feasible natural fine aggregate.

原文	English
出版狀態	Published - 2017 一月 1
事件	14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017 - Sapporo, Hokkaido, Japan 持續時間: 2017 九月 26 → 2017 九月 29

Conference

Conference	14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017
國家	Japan
城市	Sapporo, Hokkaido
期間	17-09-26 → 17-09-29

All Science Journal Classification (ASJC) codes

Environmental Science(all)

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abstract = "The electric arc furnace oxidizing slag is produced by the steel plant as an industrial by-product, with a production of 100 million tons in Taiwan annually. The purpose of this study was to stabilize the EAF oxidizing slag by using oxalic acid as a replacement for fine aggregates in cement mortar process and using geopolymer technology to prevent oxidizing slag expansion. The experimental results showed using oxalic acid could significantly stabilize the EAF oxidizing slag and the mechanical properties. On the other hand, the EAF oxidizing slag in the geopolymer system could completely inhibit the expansion. The test samples in geopolymer system had higher compressive strength than cement system. The 28 days compressive strength of geopolymer system and cement system were 30MPa and 22MPa, respectively. These results gave encouragement that the stabilized EAF oxidizing slag could be replaced as a feasible natural fine aggregate.",

author = "Hu, {Ting Kai} and Lee, {Wei Hao} and Cheng, {Ta Wui} and Tsai, {Chih Ta} and Ho, {Chang Ching} and Ling, {Yu Kang}",

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AU - Hu, Ting Kai

AU - Lee, Wei Hao

AU - Cheng, Ta Wui

AU - Tsai, Chih Ta

AU - Ho, Chang Ching

AU - Ling, Yu Kang

PY - 2017/1/1

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N2 - The electric arc furnace oxidizing slag is produced by the steel plant as an industrial by-product, with a production of 100 million tons in Taiwan annually. The purpose of this study was to stabilize the EAF oxidizing slag by using oxalic acid as a replacement for fine aggregates in cement mortar process and using geopolymer technology to prevent oxidizing slag expansion. The experimental results showed using oxalic acid could significantly stabilize the EAF oxidizing slag and the mechanical properties. On the other hand, the EAF oxidizing slag in the geopolymer system could completely inhibit the expansion. The test samples in geopolymer system had higher compressive strength than cement system. The 28 days compressive strength of geopolymer system and cement system were 30MPa and 22MPa, respectively. These results gave encouragement that the stabilized EAF oxidizing slag could be replaced as a feasible natural fine aggregate.

AB - The electric arc furnace oxidizing slag is produced by the steel plant as an industrial by-product, with a production of 100 million tons in Taiwan annually. The purpose of this study was to stabilize the EAF oxidizing slag by using oxalic acid as a replacement for fine aggregates in cement mortar process and using geopolymer technology to prevent oxidizing slag expansion. The experimental results showed using oxalic acid could significantly stabilize the EAF oxidizing slag and the mechanical properties. On the other hand, the EAF oxidizing slag in the geopolymer system could completely inhibit the expansion. The test samples in geopolymer system had higher compressive strength than cement system. The 28 days compressive strength of geopolymer system and cement system were 30MPa and 22MPa, respectively. These results gave encouragement that the stabilized EAF oxidizing slag could be replaced as a feasible natural fine aggregate.

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