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Study on Performance of pH Reducing Agent Applied for Wet Process of Recycled Aggregate
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 Title & Authors
Study on Performance of pH Reducing Agent Applied for Wet Process of Recycled Aggregate
Choi, Jung-Gu; Lee, Gun-Cheol;
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 Abstract
Construction waste is recycled and used for the efficient and eco-friendly disposal of construction waste increasing due to reconstruction and redevelopment project and so on. There is recycled aggregate as a typical case. And this recycled aggregate shows strong alkalinity due to calcium hydroxide, and causes many environmental problems. Therefore, this is a study on reduction in the strong alkalinity of recycled aggregate by using sodium phosphate based ammonium in order to reduce the pH of recycled aggregate. Besides, a possibility that a pH reducing agent of recycled aggregate could be applied to a site was evaluated. As a result, it was possible to verify that pH decreased as the percentage of pH reducing agent increased. It is thought that the pH reducing agent can be applied to a site by methods such as immersion and spray using the pH reducing agent in the process of producing recycled aggregates.
 Keywords
Recycled aggregate;pH reducing agent;The first sodium phosphate;Ammonium chloride;
 Language
Korean
 Cited by
 References
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