کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
258066 503611 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Workability and proportion design of pumping concrete based on rheological parameters
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Workability and proportion design of pumping concrete based on rheological parameters
چکیده انگلیسی


• We used concrete rheometer to test the exact rheology parameters of concrete.
• A quantified define of rheology parameters have been found based on workability.
• Different proportions for concrete design have been comprehensively proposed in this paper.

In this paper a method is introduced to find an optimized ratio of pumping concrete based on concrete rheology. Workability includes three aspects: fluidity, bleeding resistance and segregation resistance. We tested concrete samples with various water-to-binder ratio (W/B), fly-ash to binder ratio (FA/B), sand-to-aggregate ratio (S/A) and the dose of liquid naphthalene water reducer (FDN/B) by using a concrete rheometer. Using concrete rheometer to measure the yield stress and viscosity based on Bingham model, and then study the rheological regulation of concretes by changing the component proportions. The samples also have been tested for quantifying bleeding and segregation. We obtained the relationship between the workability aspects (the bleeding speed, segregation speed and fluidity) and the rheological parameters, thus obtained appropriate ranges of proportions for the good workability of concrete pumping.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 44, July 2013, Pages 267–275
نویسندگان
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