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| 环境温度下蔗糖类缓凝剂对浆体性能的影响 | |
| 引用本文： | 温小栋,马保国,许永和,潘伟.环境温度下蔗糖类缓凝剂对浆体性能的影响[J].江苏大学学报(自然科学版),2009,30(2). |
| 作者姓名： | 温小栋 马保国 许永和 潘伟 |
| 作者单位： | 1. 宁波工程学院,宁波市混凝土结构耐久性重点实验室,浙江,宁波,315016 2. 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 3. 同济大学,先进土木工程材料教育部重点实验室,上海,200092 |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| 摘 要： | 针对环境温度对缓凝剂作用的影响,采用自动高效水化热测定仪及无电极电阻率测试仪,在线测试不同温度下,新拌水泥净浆的凝结时间、水化历程及电阻率变化.通过原子吸收及XRD进行机理分析,获得蔗糖类缓凝剂在环境温度下的适应性及其作用机制,为解决实际工程问题提供理论基础.试验结果表明,蔗糖凝结时间的临界值随着环境温度的升高而降低,但在一定掺量下,蔗糖在高温下缓凝效果比低温下强;对于一定掺量的蔗糖,高温更能延缓水化放热峰的出现及浆体结构的形成. |
| 关 键 词： | 蔗糖 缓凝剂 浆体结构 环境温度 临界值 |
Influence of sucrose retarder on properties of cement mortar at different ambient temperatures |
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| Wen Xiaodong,Ma Baoguo,Xu Yonghe,Pan Wei.Influence of sucrose retarder on properties of cement mortar at different ambient temperatures[J].Journal of Jiangsu University:Natural Science Edition,2009,30(2). | |
| Authors: | Wen Xiaodong Ma Baoguo Xu Yonghe Pan Wei |
| Institution: | 1.Ningbo Key Laboratory for Structure Durability;Ningbo University of Technology;Ningbo;Zhejiang 315016;China;2.Key Laboratory for Silicate Materials Science Engineering of Ministry of Education;Wuhan University of Technology;Wuhan;Hubei 430070;3.Key Laboratory of Advanced Materials of Ministry of Education;Tongji University;Shanghai 200092;China |
| Abstract: | To study the effect of ambient temperature on the retarder,the setting time,hydration process and resistivity variation of the fresh paste were on-line tested at different temperatures by using heat of hydration measuring device,non-contacting electrical resistance measuring device and so on.Its temperature adaptability and action mechanism were discussed by means of the atomic absorption and XRD.Results of experiments show that there is a critical amount of sucrose which decrease with the increasing of the... |
| Keywords: | sucrose retarder structure of cement pastes ambient temperature critical amount |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |