| 乳胶粉掺量对纤维素醚改性水泥浆体流变性能的影响 |
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| 引用本文： | 骆文进,王丽英.乳胶粉掺量对纤维素醚改性水泥浆体流变性能的影响[J].硅酸盐通报,2021,40(1):71-76. |
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| 作者姓名： | 骆文进 王丽英 |
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| 作者单位： | 重庆建筑工程职业学院土木工程系,重庆 400072;重庆建筑工程职业学院土木工程系,重庆 400072 |
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| 基金项目： | 国家自然科学基金(41972266);重庆建筑工程职业学院院级科研项目(JG-QN-2019001);重庆市教育委员会科学技术研究青年项目(KJQN201904309);重庆市高等教育学会高等教育科学研究项目(CQGJ19B174) |
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| 摘 要： | 采用Anton Paar MCR 302型流变仪研究了乳胶粉掺量对纤维素醚改性水泥浆体流变性能和触变性的影响.结果表明,掺入乳胶粉的纤维素醚改性水泥浆体表现为剪切稀化的流变特性,当剪切速率较小时,浆体黏度下降显著.乳胶粉掺量越大,浆体基于Herschel-Bulkey模型拟合得到的屈服应力和黏度系数均越大.并且乳胶粉能...
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| 关 键 词： | 乳胶粉 纤维素醚 水泥浆体 流变性能 触变性 |
| 收稿时间： | 2020-08-13 |
Effect of Polymer Powder Content on Rheological Properties ofCement Paste Modified by Cellulose Ether |
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| LUO Wenjin,WANG Liying.Effect of Polymer Powder Content on Rheological Properties ofCement Paste Modified by Cellulose Ether[J].Bulletin of the Chinese Ceramic Society,2021,40(1):71-76. |
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| Authors: | LUO Wenjin WANG Liying |
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| Affiliation: | School of Civil Engineering,Chongqing Jianzhu College,Chongqing 400072,China |
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| Abstract: | The effect of polymer powder (PP) content on the rheological properties and thixotropy of cellulose ether (HPMC) modified cement paste was studied by Anton Paar MCR 302 rheometer.The results show that HPMC modified cement paste with PP behaves as a shear-thinning fluid.When the shear rate is small,the viscosity of cement paste decreases significantly.The higher the content of PP is,the larger the yield stress and viscosity coefficient fitted by Herschel-Bulkey model.Moreover,PP can increase the area of thixotropic hysteresis loop and the structural recovery rate of three-stage thixotropy test.There is a positive linear relationship between yield stress and thixotropic loop area of cement paste incorporating PP and HPMC. |
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| Keywords: | polymer powder cellulose ether cement paste rheological property thixotropy |
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