کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
257856 503602 2014 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Re-use of waste marble dust in the production of cement and concrete
ترجمه فارسی عنوان
استفاده مجدد از گرد و غبار سنگ مرمر در تولید سیمان و بتن
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• This paper presents a study about the utilization of waste marble dust in producing cement and concrete.
• Marble dust was added by 0.0%, 5.0%, 7.5%, 10.0% and 15.0% replacement ratios by weight of cement and sand.
• TGA, XRD and SEM analysis were applied for further investigation.
• Both cement mortar and concrete modified with marble dust are enhanced due to the use of marble dust.
• Concrete made of marble dust as sand replacement showed better performance compared to cement replacement.

The main objective of this research is to investigate the possibility of utilizing waste marble dust (MD) in cement and concrete production. The research work was divided into two sections. The first section deals with the properties of cement modified with marble dust (marble dust blended cement), whereas the second section discusses the properties of concrete contained marble dust as a cement replacement and as a sand replacement (cement addition). The replacement ratios which have been studied were 0.0%, 5.0%, 7.5%, 10.0% and 15% by weight. Water to powder ratio (w/p) or water to cement ratio (w/c) were 0.50 and 0.40 in case of cement replacement and in case of sand replacement respectively. Physical, mechanical and chemical properties of cement and concrete modified with marble dust were investigated. In addition, TGA, XRD and SEM analysis were performed. Test results of cement paste and cement mortar indicate that the marble dust blended cement remains within the acceptable ranges of the Egyptian standards. Also, generally, the use of marble dust in concrete production as cement replacement or as sand replacement (cement addition) gradually enhances both of the mechanical and physical properties of concrete especially with lower w/c ratio. Marble dust showed a filler effect in concrete and had no noticeable role in the hydration process. Yet, concrete made with marble dust as sand replacement achieved better performance compared to concrete made with marble dust as cement replacement.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 50, 15 January 2014, Pages 28–41
نویسندگان
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