| 纳米SiO2粉在水泥基复合材料中的试验研究 |
| |
| 引用本文： | 冯奇,梁传栋,刘光明.纳米SiO2粉在水泥基复合材料中的试验研究[J].材料科学与工程学报,2004,22(2):224-227. |
| |
| 作者姓名： | 冯奇 梁传栋 刘光明 |
| |
| 作者单位： | 同济大学混凝土材料研究国家重点实验室,上海,200092;哈尔滨工业大学,黑龙江,哈尔滨,150006;黑龙江省虎林市第一建筑工程公司,黑龙江,哈尔滨,158400;哈尔滨工业大学建筑科技集团,150006 |
| |
| 基金项目： | 国家自然科学基金
,
国家重点基础研究发展计划(973计划) |
| |
| 摘 要： | 研究了硅粉、纳米SiO2粉的活性,二者及复合粉体与C3S的二次水化反应产物成分,并研究了水泥基材料的力学性能和显微结构,探讨了纳米SiO2粉改善显微结构的机理,获得纳米SiO2粉应用于水泥基材料适合的方法.研究表明,纳米SiO2粉为非晶态,活性高于硅粉.粉体二次水化速率大小及水化程度高低依次为复合粉体、纳米SiO2粉、硅粉.复合粉体应用于水泥基材料中可增加致密性、提高均匀性,并提高强度.纳米SiO2粉与粉煤灰、硅粉复合应用于水泥基材料能够体现优异的使用性和经济性.
|
| 关 键 词： | 硅粉 纳米SiO2粉 C3S 二次水化 |
| 文章编号： | 1004-793X(2004)02-0224-04 |
| 修稿时间： | 2003年6月16日 |
Experimental Study on Cement-based Composites with Nano-SiO2 |
| |
| FENG Qi ,LIANG Chuang-dong\,LIU Guan-ming\.Experimental Study on Cement-based Composites with Nano-SiO2[J].Journal of Materials Science and Engineering,2004,22(2):224-227. |
| |
| Authors: | FENG Qi LIANG Chuang-dong\ LIU Guan-ming\ |
| |
| Affiliation: | FENG Qi 1,2,LIANG Chuang-dong\+3,LIU Guan-ming\+4 |
| |
| Abstract: | In ths paper,the activity of silica fume and nano-SiO-2 were introduced,the composition of secondly hydrate products of both the respective powder and their mixed powders were studied in the cement-based materials,mechanical property and the microstructure of the cement-based materials was tested,improvement of nano-SiO-2 on the microstructure was discussed and the proper application method of nano-SiO-2 was got in cement-based materials.The results show that nano-SiO-2 is amorphous;its activity is higher than silica fume.The order of secondly hydrate speed rate and degree of these powders are the mixed powders,nano-SiO-2,silica fume.The addition of the mixed powders can improve compactability,uniformity and strength.The composite addition of nano-SiO-2 and fly ash, silica fume can represent good service performance and economical efficiency. |
| |
| Keywords: | silica fume nano-SiO_2 C_3S secondly hydrate |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
