The Improve of Accelerated Carbonation on Engineering Properties of Basic Oxygen Furnace Slag

Cheng Chung Chen; Chao Shi Chen; Jyun Yong Jhan; Ming Sheng Ko

doi:10.4028/www.scientific.net/KEM.709.42

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 709The Improve of Accelerated Carbonation on...

The Improve of Accelerated Carbonation on Engineering Properties of Basic Oxygen Furnace Slag

Abstract:

Basic oxygen furnace (BOF) slag is characterized by high hardness, low abrasion, and high roughness. It is suitable as graded aggregate for engineering applications. However, the conversion process generated a great amount of unreacted free CaO, resulting in expansion and thus making the slag inconvenient for use in engineering applications. Accelerated carbonation of BOF slag is equivalent to natural weathering. Moreover, it can effectively shorten the weathering time. This study found that accelerated carbonation not only reduce expansion behaviors but also strengthen physical and mechanical properties. According to test results, the abrasion resistant, soundness, California bearing ratio, shear strength, and compressive strength have increased after carbonation.

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Proceeding of the International Conference on Materials Engineering and Nanotechnology 2016

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Periodical:

Key Engineering Materials (Volume 709)

Pages:

42-45

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.709.42

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Online since:

September 2016

Authors:

Cheng Chung Chen*, Chao Shi Chen, Jyun Yong Jhan, Ming Sheng Ko

Keywords:

Accelerated Carbonation, Basic Oxygen Furnace Slag, Expansion, Mechanical Properties

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