[1]赖建中,孙伟,詹炳根.生态型RPC材料的断裂力学行为研究[J].东南大学学报(自然科学版),2004,34(1):92-95.[doi:10.3969/j.issn.1001-0505.2004.01.022]
 Lai Jianzhong,Sun Wei,Zhan Binggen.Study on the fracture mechanical properties of ecological reactive powder concrete[J].Journal of Southeast University (Natural Science Edition),2004,34(1):92-95.[doi:10.3969/j.issn.1001-0505.2004.01.022]
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生态型RPC材料的断裂力学行为研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第1期
页码:
92-95
栏目:
材料科学与工程
出版日期:
2004-01-20

文章信息/Info

Title:
Study on the fracture mechanical properties of ecological reactive powder concrete
作者:
赖建中 孙伟 詹炳根
东南大学材料科学与工程系, 南京 210096
Author(s):
Lai Jianzhong Sun Wei Zhan Binggen
Department of Materials Science and Engineering, Southeast University, Nanjing 210096, China
关键词:
生态RPC 超细工业废渣 纤维掺量 养护制度 断裂能 断裂韧度 延性指数
Keywords:
ecological reactive powder concrete ultra-fine industrial waste volume fraction of steel fiber curing condition fracture energy fracture toughness ductility index
分类号:
TU52
DOI:
10.3969/j.issn.1001-0505.2004.01.022
摘要:
以质量分数为50%~60%的超细工业废渣取代水泥,以普通黄砂取代磨细石英砂,制备了2个系列不同配比的生态型RPC材料,并研究了纤维掺量及养护制度对其断裂力学性能的影响规律.结果显示,随着纤维掺量的增加,生态RPC的断裂能及断裂韧度不断提高; 在标准养护条件下,生态RPC的延性指数在纤维体积率为2%时最大.随着养护温度的提高,生态RPC的极限断裂强度不断提高,但同时其脆性也在增加,从而表现出断裂能、断裂韧度和延性指数受养护制度影响的变化规律各不相同.
Abstract:
Two types of ecological reactive powder concrete(ECO-RPC)were prepared by substitution of ultra-fine industrial waste for 50%-60% cement by weight and replacement of ground fine quartz sand with natural fine sand. The effects of the volume fraction of steel fiber and curing conditions on the fracture mechanical properties of ECO-RPC were studied.The results showed that the fracture energy and fracture toughness of ECO-RPC increased with the increasing of fiber. Under the standard curing conditions the ductility index of ECO-RPC reached a maximum when the fiber volume fraction is 2%. With the rising of curing temperature the maximum fracture strength of ECO-RPC and its brittleness were improved. The effects of curing conditions on fracture energy, fracture toughness and ductility index are different from each other.

参考文献/References:

[1] Bonneau Oliver,Poulin Claude,Dugat Jerome.Reactive powder concrete:from theory to practice[J]. Concrete International,1996,18(4):47-49.
[2] Cheyrezy Marcel.Structural applications of RPC [J].Concrete,1999,33(1):20-23.
[3] Matte V,Moranville M.Durability of reactive powder composites:influence of silica fume on the leaching properties of very low water/binder pastes[J].Cement and Concrete Composite,1999,21(1):1-9.
[4] 赵国藩,彭少民,黄承逵,等.钢纤维混凝土结构[M].北京:中国建筑工业出版社,1999.84-89.
[5] 严安,吴科如,姚武,等.混凝土的断裂能随断裂路径的变化规律[J].水利学报,2002(1):76-80.
  Yan An,Wu Keru,Yao Wu,et al.Effect of fracture path on fracture energy of concrete [J].Journal of Hydraulic Engineering,2002(1):76-80.(in Chinese)

备注/Memo

备注/Memo:
基金项目: 国家自然科学基金资助项目(59938170).
作者简介: 赖建中(1978—),男,博士生; 孙伟(联系人),女,教授,博士生导师,sunwei@seu.edu.cn.
更新日期/Last Update: 2004-01-20