试验采用旋转黏度计测定了水泥-白云石粉浆体剪切应力和塑性黏度随剪切速率变化的规律,对所测浆体T-γ曲线采用Bingham流体模型进行拟合,得到浆体屈服应力和塑性黏度,采用Power Law流体模型拟合出浆体的流变指数,并用触变环面积表征浆体的触变性.研究结果表明:在0 ～ 30％掺量范围内,随白云石粉掺量的增大,水泥浆体的屈服应力、塑性黏度和触变性均逐渐增加;白云石粉细度对浆体屈服应力和塑性黏度影响较小.
参考文献
| [1] | Chiara F. Ferraris;Karthik H. Obla;Russell Hill.The influence of mineral admixtures on the rheology of cement paste and concrete[J].Cement and Concrete Research,20012(2):245-255. |
| [2] | Mehmet Gesoglu;Erhan Gueneyisi;Mustafa E. Kocabag;Veysel Bayram;Kasim Mermerdas.Fresh and hardened characteristics of self compacting concretes made with combined use of marble powder, limestone filler, and fly ash[J].Construction and Building Materials,2012:160-170. |
| [3] | 王晓庆;王珊珊;冯竞竞;周翠玲.磨细粉煤灰对水泥基复合胶凝材料流变性能及硬化性能的影响[J].硅酸盐通报,2015(6):1554-1558. |
| [4] | Nikola Mikanovic;Carmel Jolicoeur.Influence of superplasticizers on the rheology and stability of limestone and cement pastes[J].Cement and Concrete Research,20087(7):907-919. |
| [5] | 张翠;王智;王林龙;张磊.水泥浆体体系ζ-电位探究[J].硅酸盐通报,2013(7):1264-1268. |
| [6] | 黄大能.流变学在水泥与混凝土研究中的应用[J].混凝土世界,2011(09):21-26. |
| [7] | Prakash Nanthagopalan;Michael Haist;Manu Santhanam.Investigation on the influence of granular packing on the flow properties of cementitious suspensions[J].Cement & concrete composites,20089(9):763-768. |
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