کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1454555 1509680 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Method to determine mixture proportions of workable ultra lightweight cement composites to achieve target unit weights
ترجمه فارسی عنوان
روش برای تعیین نسبت مخلوط کامپوزیت سیمان فوق العاده سبک وزن قابل استفاده برای رسیدن به وزن واحد هدف
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی

Ultra lightweight cement composite (ULCC) is a type of composite characterized by low unit weights <1500 kg/m3 and high compressive strengths of up to about 65 MPa. The low unit weight is achieved by incorporating cenospheres as micro-lightweight aggregates in cement paste. As the cenospheres are by-products from coal burning power plants, their properties may vary greatly. This results in great difficulty in determining the mixture proportions of the ULCC. In this research, a new design method is developed and proposed that can be used to effectively determine the mixture proportions of workable ULCC to achieve a desired target unit weight with minimal laboratory trials. The relationship between the spacing among spherical cenospheres and the water-to-cementitious materials ratio (w/cm) needed to achieve the target workability is the basis of this design method. For a given cenosphere sample, if its particle size distribution and particle density are determined, it is possible to design a mixture of ULCC using this method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 53, October 2014, Pages 178–186
نویسندگان
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