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| CA砂浆的流变特性 | |
| 引用本文： | 王发洲,王涛,胡曙光,刘志超,高涛,陈亮.CA砂浆的流变特性[J].武汉大学学报(工学版),2008,41(4). |
| 作者姓名： | 王发洲 王涛 胡曙光 刘志超 高涛 陈亮 |
| 作者单位： | 1. 武汉理工大学硅酸盐材料工程教育部重点实验室,湖北,武汉,430070 2. 武汉理工大学土木工程与建筑学院,湖北,武汉,430070 3. 湖北国创高新材料股份有限公司,湖北,武汉,430074 |
| 基金项目： | 国家自然科学基金，湖北省武汉市科技攻关项目 |
| 摘 要： | CA砂浆是应用在板式轨道结构中的一种新型有机无机复合灌浆材料,其流变性能直接决定CA砂浆的灌注效果.通过流变仪研究了新拌CA浆体的瞬态与稳态流变特性及其影响因素.结果表明,CA浆体属于非牛顿流体,表现在低剪切速率时,CA浆体的粘度随时间先减小后增大;中高剪切速率时,其粘度先随时间减小后趋于稳定.在绝对水灰比固定条件下,随着沥青乳液与水泥质量比、硅灰和流变助剂掺量的增大,CA浆体的粘度增加;随着粉煤灰掺量的增加,CA浆体粘度略有降低. |
| 关 键 词： | 流变性能 CA砂浆 水泥 沥青乳液 |
Rheological behavior of cement asphalt mortar |
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| WANG Fazhou,WANG Tao,HU Shuguang,LIU Zhichao,GAO Tao,CHEN Liang.Rheological behavior of cement asphalt mortar[J].Engineering Journal of Wuhan University,2008,41(4). | |
| Authors: | WANG Fazhou WANG Tao HU Shuguang LIU Zhichao GAO Tao CHEN Liang |
| Abstract: | Cement asphalt(CA) mortar is a new organic-inorganic composite grouting material which is applied to slab track structure;and the grouting quality is governed by its rheological behavior.The transient and steady flow behavior of CA mortar is studied by means of a rheometer.The results show that the CA mortar is a non-Newtonian fluid.When a low strain rate is applied,its viscosity is decreased first and then increased;and when a medium or high strain rate is applied,its viscosity decreased with time and then leveled off.Absolute water/cement ratio being equal,the viscosity of CA mortar increased with the increase of asphalt emulsion and cement ratio,silica fume and rheological agent,but decreased slightly with the increase of fly ash. |
| Keywords: | rheological behavior CA mortar cement asphalt emulsion |
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