کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1457689 989275 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Correlation between L-box test and rheological parameters of a homogeneous yield stress fluid
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Correlation between L-box test and rheological parameters of a homogeneous yield stress fluid
چکیده انگلیسی

In this paper, a theoretical analysis of the L-box test is proposed in the case where no heterogeneity is induced by the flow. It is first demonstrated that if the standard procedure is followed and the L-box gate promptly lifted, the flow is dominated by inertia effects, depending on the lifting speed of the gate and thus on the operator. When the gate is slowly lifted, the flow and flow stoppage of a homogeneous yield stress fluid in a bounded channel are first studied. The obtained theoretical shape of the sample at stoppage is successfully correlated to the experimental results in the case of limestone powder suspensions. Then, the influence of steel bars was included in both the theoretical and the experimental study. Finally, practical applications of the present work to the case of real self-compacting concrete are suggested.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 36, Issue 10, October 2006, Pages 1789–1796
نویسندگان
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