Recycling nonmagnetic material from de-sulferization slag as coarse aggregate through cold-Pressing technique

Chih Ta Tsai, Chia Cheng Wu, Teng Ker Hsu, Juu En Chang

研究成果: Article

摘要

Every year there was approximately 500,000 tons of de-sulferization slag generated in Taiwan, but the recycling amount was very slightly. A new approach, the cold-pressing technique that incorporates the principles of the cement chemistry and composite material was developed to recycle innocuous resources (e.g. construction residual soil, granite and lime sludge, and sediment, etc.) as recycling coarse aggregate. Even this technique also has successfully been applied to recycle stainless steel reductive slag with low volume stability. This paper aims to show that using cold-pressing technique can recycle nonmagnetic material from de-sulferization slag as coarse aggregate. Herein the cement-based composite is regarded as concrete. Particularly, the mixture proportions with a low cement amount of 100 kg/m3 and more than 70% (by weight) of nonmagnetic material from de-sulferization were designed. The test results show that the specific gravity of recycling coarse aggregate is about 1.67 in the OD state; the absorption capacity is 27.65%; the dry loose density (i.e. unit weight) is about 1,106 kg/m3; and other characteristics conform to ASTM C33. Therefore the cold-pressing technique is a new and practicable approach to recycle nonmagnetic material from de-sulferization slag in future.

原文English
頁(從 - 到)163-170
頁數8
期刊Engineering Journal
20
發行號4
DOIs
出版狀態Published - 2016 八月 1

指紋

Slags
Recycling
Cements
Granite
Composite materials
Lime
Density (specific gravity)
Sediments
Stainless steel
Concretes
Soils

All Science Journal Classification (ASJC) codes

  • Engineering(all)

引用此文

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abstract = "Every year there was approximately 500,000 tons of de-sulferization slag generated in Taiwan, but the recycling amount was very slightly. A new approach, the cold-pressing technique that incorporates the principles of the cement chemistry and composite material was developed to recycle innocuous resources (e.g. construction residual soil, granite and lime sludge, and sediment, etc.) as recycling coarse aggregate. Even this technique also has successfully been applied to recycle stainless steel reductive slag with low volume stability. This paper aims to show that using cold-pressing technique can recycle nonmagnetic material from de-sulferization slag as coarse aggregate. Herein the cement-based composite is regarded as concrete. Particularly, the mixture proportions with a low cement amount of 100 kg/m3 and more than 70{\%} (by weight) of nonmagnetic material from de-sulferization were designed. The test results show that the specific gravity of recycling coarse aggregate is about 1.67 in the OD state; the absorption capacity is 27.65{\%}; the dry loose density (i.e. unit weight) is about 1,106 kg/m3; and other characteristics conform to ASTM C33. Therefore the cold-pressing technique is a new and practicable approach to recycle nonmagnetic material from de-sulferization slag in future.",
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Recycling nonmagnetic material from de-sulferization slag as coarse aggregate through cold-Pressing technique. / Tsai, Chih Ta; Wu, Chia Cheng; Hsu, Teng Ker; Chang, Juu En.

於: Engineering Journal, 卷 20, 編號 4, 01.08.2016, p. 163-170.

研究成果: Article

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