| 水灰比和聚灰比对改性砂浆性能和微观结构的影响 |
| |
| 引用本文： | 赵文杰,张会轩,张宝砚.水灰比和聚灰比对改性砂浆性能和微观结构的影响[J].东北大学学报(自然科学版),2010,31(2):236-240. |
| |
| 作者姓名： | 赵文杰 张会轩 张宝砚 |
| |
| 作者单位： | 1. 东北大学理学院,辽宁,沈阳,110004
2. 长春工业大学化学工程学院,吉林,长春,130012;中国科学院长春应用化学研究所,吉林,长春,130022 |
| |
| 基金项目： | 国家高技术研究发展计划项目(2004AA304020) |
| |
| 摘 要： | 将核壳比为50/50的聚丁二烯接枝聚苯乙烯(PB-g-PS)胶乳用于改性水泥砂浆,考察了聚灰比(聚合物对水泥的质量比)和水灰比(水对水泥的质量比)对改性水泥砂浆的流动度、抗压和抗折强度以及水吸收速率的影响.结果表明:改性砂浆的流动度随水灰比和聚灰比的增加而增加;胶乳能显著降低改性砂浆的毛细孔吸水率;改性砂浆的抗压强度降低,但当水灰比较低时,部分改性砂浆的抗折强度有所提高.微观结构分析表明:改性砂浆的结构更加致密,从而有利于性能的提高.
|
| 关 键 词： | 核壳胶乳 改性水泥砂浆 砂浆性能 微观结构 水灰比 聚灰比 |
Effects of Polymer-Cement Ratio and Water-Cement Ratio on Properties and Microstructure of Modified Mortars |
| |
| ZHAO Wen-jie,ZHANG Hui-xuan,ZHANG Bao-yan.Effects of Polymer-Cement Ratio and Water-Cement Ratio on Properties and Microstructure of Modified Mortars[J].Journal of Northeastern University(Natural Science),2010,31(2):236-240. |
| |
| Authors: | ZHAO Wen-jie ZHANG Hui-xuan ZHANG Bao-yan |
| |
| Institution: | 1.School of Sciences;Northeastern University;Shenyang 110004;China;2.Institute of Chemical Engineering;Changchun University of Technology;Changchun 130012;3.Changchun Institute of Applied Chemistry;Chinese Academy of Sciences;Changchun 130022;China. |
| |
| Abstract: | The polybutadiene-graft-polystyrene(PB-g-PS) latex with a core-shell ratio 50/50 was used to modify cement mortar.The effects of water-cement ratio(W/C) and the polymer-cement ratio(P/C) on the flowability,compressive/flexural strength and water absorption rate of the cement mortar modified with PB-g-PS core-shell structure latex were investigated.Experimental results showed that the flowability of modified mortar increases with increasing P/C and W/C,and the PB-g-PS latex can remarkably reduce the capillar... |
| |
| Keywords: | core-shell latex modified cement mortar property of cement mortar microstructure water-cement ratio polymer-cement ratio |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《东北大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《东北大学学报(自然科学版)》下载免费的PDF全文 |
