کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4927651 1363218 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new prediction method for the rheological behavior of grout with bottom ash for jet grouting columns
ترجمه فارسی عنوان
یک روش پیشبینی جدید برای رفتار رئولوژیکی رواناب با خاکسترهای پایین برای ستون های جوش
کلمات کلیدی
ستون تزریق جت، غلظت، خاکستر پایین رفتار رئولوژیک، برنامه نویسی بیان ژن،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Among the many variables involved in jet grout technology, dealing with the complex phenomena of grout flow, specifically related to the pumping pressure (shear stress), the pumping rate (shear rate) and the viscosity, mostly becomes a difficult task for grouting in practice. Thus, this study presents the capability of a new methodology in soft computing techniques, called gene expression programming (GEP), to predict the rheological behavior (i.e., the shear stress versus the shear rate and the viscosity versus the shear rate) of grout with bottom ash for jet grouting columns, as an alternative approach to traditional methods. For this purpose, shear stress and viscosity formulas, including the main input variables of the shear rate and bottom ash proportion, are derived using GEP modeling through the stages of production and testing. Then, the performances of the GEP formulas are compared with the measured data and the regression and conventional rheological models (De Kee and Robertson-Stiff) for use in practice. The results indicate that the GEP formulas are able to yield estimations with good precision resulting in better predictions (R ≥ 0.96) compared to the regression model. A successful description of the pseudoplastic response of rheological behavior is given, and a response consistent with conventional rheological models is obtained. Moreover, the measured data (shear stress and viscosity) generally follow the GEP modeling well, but the level of satisfaction is more favorable at high proportions of bottom ash. In conclusion, the study reveals that the derived GEP formulas are relatively promising for estimating the pumping pressure, the viscosity and the pumping rate of grout with bottom ash for jet grouting columns, at least in assisting conventional methods for preliminary designs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soils and Foundations - Volume 57, Issue 3, June 2017, Pages 384-396
نویسندگان
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