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| 硅灰掺量对活性粉末混凝土(RPC200)性能的影响 | |
| 引用本文： | 何峰,杨军平,马淑芬. 硅灰掺量对活性粉末混凝土(RPC200)性能的影响[J]. 桂林工学院学报, 2007, 27(1): 77-80 |
| 作者姓名： | 何峰 杨军平 马淑芬 |
| 作者单位： | 1. 湖南师范大学,资源与环境科学学院,长沙,410081 2. 桂林工学院,土木工程系,广西,桂林,541004 3. 吉林油田分公司勘探开发研究院,吉林,松原,138000 |
| 基金项目： | 广西科技攻关项目(桂科攻0480003)，广西区教育厅重点科研项目(桂教科研(2003)22) |
| 摘 要： | 为了解硅灰对活性粉末混凝土性能的影响,以及硅灰在活性粉末混凝土中的增强机理,通过试验分析,讨论了活性粉末混凝土中硅灰掺量变化对混凝土密度、相对密度和抗压强度等性能的影响.硅灰的微填充效应有利于提高活性粉末混凝土的密度和相对密度,而火山灰效应有利于提高其强度.当硅灰掺量约为水泥掺量的25%~35%时,可获得性能较好的RPC200.为降低成本而又不大幅度损害活性粉末混凝土的强度,超细粉煤灰等矿物掺合料替代硅灰的量不宜超过20%. |
| 关 键 词： | 活性粉末混凝土 硅灰 火山灰效应 微填充效应 |
| 文章编号： | 1006-544X(2007)01-077-04 |
| 修稿时间： | 2006-09-25 |
Effect of Silica Fume Quantity on Performance in Reactive Powder Concrete |
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| HE Feng,YANG Jun-ping,MA Shu-fen. Effect of Silica Fume Quantity on Performance in Reactive Powder Concrete[J]. Journal of Guilin University of Technology, 2007, 27(1): 77-80 | |
| Authors: | HE Feng YANG Jun-ping MA Shu-fen |
| Affiliation: | 1. College of Resources and Environment Science, Hunan Normal University, Changsha 410081, China; 2. Department of Civil Engineering, Guilin University of Technology, Guilin 541004, China; 3. Exploration and Development Research Institute of Jilin Oil Field Company, Songyuan 138000, China |
| Abstract: | In order to understand the effects of silica fume to Reactive Powder Concrete(RPC) performance and its enhancement mechanism in RPC,effects of quantity of silica fume in RPC on concrete density,relative density and compressive strength are discussed.The analysis indicates that micropacking silica fume works to the density and relative density of RPC,and its pozzolanic effect helps the strength of RPC.RPC200 having outstanding performance can be got when silica fume quantity is approximately 25%~35% of cement quantity.In order to reduce the cost and increase the RPC strength,the substitution of mixed minerals such as ultra-pulverized fly ash for silica fume quantity can be lower than 20%. |
| Keywords: | reactive powder concrete(RPC) silica fume pozzolanic effect micro-packing effect |
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