کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4769227 1425775 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrical fragmentation applied to the recycling of concrete waste - Effect on aggregate liberation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrical fragmentation applied to the recycling of concrete waste - Effect on aggregate liberation
چکیده انگلیسی


- Electrical fragmentation efficiency is dependent on aggregate size
- Electrical fragmentation efficiency is not dependent on aggregate nature
- Water quality does not have a significant impact on liberation but has an impact on the fragmentation of coarse particles

This study presents an evaluation of an innovative technique for the treatment of concrete waste by electrical fragmentation. Scientific arguments are made, indicating that it is possible to strive for the recovery of waste by jointly recycling aggregates and the hydrated cement paste, in order to manufacture new concrete of the same mechanical quality as that produced using raw materials. The results of electrical fragmentation tests on concrete show that i) fragmentation level and selectivity are significantly enhanced when the size of the constituent aggregate in the concrete increases, which is a positive result because the largest proportion of most concrete mixes comprises coarse aggregate (45% of 5/20 mm aggregate); ii) the mineralogical nature of the aggregate has little impact on the electrical fragmentation level and has none on its selectivity, which are positive results demonstrating the robustness of the process in terms of its ability to process aggregate of different origins and iii) aggregate liberation degree depends on neither the energy level applied to the concrete, nor the quality of the process water, which are positive results for industrial applications. The results of this study show that electrical fragmentation has potential for integration as part of a recycling process for concrete waste on an industrial scale.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mineral Processing - Volume 158, 10 January 2017, Pages 68-75
نویسندگان
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