| 新型活性粉末混凝土(RPC)为基底材料的断裂性能研究 |
| |
| 引用本文： | 姚志雄,周瑞忠,石成恩.新型活性粉末混凝土(RPC)为基底材料的断裂性能研究[J].工业建筑,2005,35(7):71-73,95. |
| |
| 作者姓名： | 姚志雄 周瑞忠 石成恩 |
| |
| 作者单位： | 福州大学,土木建筑工程学院,福州,350002 |
| |
| 摘 要： | 以粉煤灰代替磨细石英粉末,配制了两个系列的RPC试件并研究聚丙烯纤维掺量以及养护制度对其断裂力学性能的影响。结果表明:粉煤灰取代石英粉以较少的减水剂就能达到良好的工作性能,且辅以热水养护,其极限荷载有所提高,但是其断裂能和延性指数却降低了。试验研究的同时给出了在一定的水胶比和标准养护条件下,其断裂能、延性指数和断裂韧度等参数随纤维体积掺量变化的规律。
|
| 关 键 词： | 活性粉末混凝土 粉煤灰 纤维掺量 断裂韧度 延性指数 |
| 收稿时间： | 2004-12-25 |
| 修稿时间： | 2004-12-25 |
STUDY ON MATERIAL'S FRACTURE MECHANICAL PROPERTIES BASED ON NEW REACTIVE POWDER CONCRETE |
| |
| YAO Zhixiong,Zhou Ruizhong,Shi Cheng'en.STUDY ON MATERIAL''''S FRACTURE MECHANICAL PROPERTIES BASED ON NEW REACTIVE POWDER CONCRETE[J].Industrial Construction,2005,35(7):71-73,95. |
| |
| Authors: | YAO Zhixiong Zhou Ruizhong Shi Cheng'en |
| |
| Abstract: | Two types of reactive powder concrete(RPC) were prepared by substition of fly-ash for fine quartz sand. The effects of volume fraction of polypropylene fibres and curing conditions on the fracture properties of RPC were studied. The results showed that the good workability can be got by less water reducer and ultimate load was increased, but the fracture energy and ductility indexes were decreased with the replacement of fly-ash for fine quartz sand. The study also showed that on the same conditions, the effects on the fracture energy and ductility and fracture toughness are varied with the increase of fibre. |
| |
| Keywords: | reactive powder concrete fly ash percentage of fibre fracture toughness ductile index |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
