کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4913666 | 1428775 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of water-powder ratio on shear thickening response of SCC
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of water-powder ratio on shear thickening response of SCC Effect of water-powder ratio on shear thickening response of SCC](/preview/png/4913666.png)
چکیده انگلیسی
The effect of the water-powder ratio on rheological properties of three types of self-compacting concretes (SCCs)-powder type SCC, viscosity modifying admixture (VMA) type SCC and powder-VMA combination type SCC were tested by RHM-3000 ICAR rheometer. The application of the Herschel-Bulkley (H-B) model and the modified Bingham model was discussed, and the effect of the water-powder ratio on shear thickening response of three types of SCCs were compared. The results showed that yield stresses of the three types of SCCs increased with the increase of water-powder ratio for the concrete with the similar slump flow and air content. However, the plastic viscosities differed in the opposite sense. The shear thickening response of SCC was found decreased with the increase of water-powder ratio, and there was a critical water-powder ratio from shear thickening to shear thinning. The shear thickening response could be well described by both H-B model and the modified Bingham model with good correlations, but the parameter of c/μ in the modified Bingham model was found to be more sensitive to the change of shear thickening. The shear thickening response of VMA type SCC was found to be the most sensitive to the change of water-powder ratio, and the least was combination type SCC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 131, 30 January 2017, Pages 585-591
Journal: Construction and Building Materials - Volume 131, 30 January 2017, Pages 585-591
نویسندگان
Huajian Li, Fali Huang, Yongjiang Xie, Zhonglai Yi, Zhen Wang,