生态型活性粉末混凝土单轴压缩力学性能

焦楚杰; 孙伟; 赖建中; 蒋金洋

doi:10.13204/j.gyjz200401017

生态型活性粉末混凝土单轴压缩力学性能

doi: 10.13204/j.gyjz200401017

1.
东南大学材料科学与工程系南京 210096

基金项目:

国家自然科学基金重点项目资助(项目批准号:59938170)

详细信息

作者简介:
焦楚杰男 1974年10月出生博士研究生

中图分类号: TU528
计量
- 文章访问数: 120
- HTML全文浏览量: 17
- PDF下载量: 45
- 被引次数: 0
出版历程
- 收稿日期: 2003-07-20
- 刊出日期: 2004-01-20

MECHANICAL PROPERTIES OF ECOLOGICAL REACTIVE POWDER CONCRETE UNDER UNIAXIAL COMPRESSION

1.
Department of Materials and Engineering,Southeast University Nanjing 210096

摘要

摘要: 对不同钢纤维体积率的生态型活性粉末混凝土(ECORPC)进行了系统的准静态两种应变率单轴压缩试验，试验结果表明：超细钢纤维的加入，不仅进一步提高了ECORPC的强度，而且还显著地提高其韧性和阻裂能力，使ECORPC破坏形态从脆性改变到假塑性，弹性模量和泊松比也分别相应有所微增与微减；随着应变率增大，相同配合比ECORPC的应力-应变全曲线形状保持很好的相似性，强度提高，韧性下降，ECORPC基体韧度的下降程度大于掺钢纤维的ECORPC。
- 生态型活性粉末混凝土(ECO-RPC) /
- 钢纤维 /
- 准静态 /
- 单轴压缩 /
- 增强 /
- 增韧 /
- 阻裂 /
- 弹性模量 /
- 泊松比
Abstract: Based on the experiments, this paper systematically studied the quasi-static mechanical properties of ecological reactive powder concrete(ECO-RPC) with different fiber volume fractions( V f) under uniaxial compression with two strain rates.The experimental results showed that the adding of steel fiber into the ECO-RPC matrix led to not only further strengthening but also remarkably toughening and crack arresting of the composites, and the destruction pattern of ECO-RPC was changed from brittleness to pseudo plasticity.With the increase of the V f, the elastic modulus and Poisson's ratio of ECO-RPC were changed only a little.It was also found that the stress-strain curves of the same mix proportion of ECO-RPC with different strain rate were somewhat similar, with the strength and the peak strain increased but the toughness decreased when the strain rate increased, and the toughness of ECO-RPC matrix decreased more than those of steel fiber reinforced ECO-RPC.
- ecological reactive powder concrete( ECO- RPC) /
- steel fiber /
- quasi-static uniaxial /
- compression strengthening /
- toughening /
- crack arresting /
- elastic modulus /
- Poisson' s ratio /

HTML全文

参考文献(15)

Pierre Richard, Marcel Cheyrezy.Composition of Reactive Powder Concretes.Cement and Concrete Research, 1995, 25(7):1501～1511

[2] Oliver Bonneau, Cloude Poulin, et al.Reactive Powder Concrete, from Theory to Practice.Concrete International, 1996, 18(4):47～49

[3] Oliver B, Lachemi M.Mechanical Properties and Durability of Tow Industrial Reactive Powder Concrete.ACI Materials Journal, 1997, 94(4):286～290

[4] 孙伟, 刘斯凤, 赖建中, 等.超高性能绿色活性粉末混凝土性能的研究.水利学报, 2002(增刊):10～14

[5] 刘斯凤, 孙伟, 张云升, 等.新型超高性能混凝土的力学性能研究及工程应用.工业建筑, 2002(6):1～3

[6] 中国工程建设标准化协会.钢纤维混凝土试验方法.北京:中国计划出版社, 1996.50～53

[7] 过镇海.混凝土的强度和变形:试验基础和本构关系.北京:清华大学出版社, 1997.13～15

[8] 程庆国, 高路彬, 徐蕴贤, 等.钢纤维混凝土理论及应用.北京:中国铁道出版社, 1999.50～54

[9] 安明哲, 王庆生, 丁建彤.活性粉末混凝土的配制原理及应用前景.建筑技术, 2002(1):15～16

[10] Romnaldi J P, Mandel J A.Tensile Strength of Concrete Affected by Uniformly Dispersed and Closely Spaced Short Length of Wire Reinforcement.Journal of American Concrete Institute, 1964(2):657～672

[11] 董毓利.混凝土非线性力学基础.北京:中国建筑工业出版社, 1997

[12] 中国土木工程学会高强混凝土委员会.高强混凝土结构设计与施工指南*第二版.北京:建筑工业出版社, 2001

[13] GB50010-2002 混凝土结构设计规范

[14] 吕德生, 汤骅.高强混凝土弹性模量与抗压强度的相关性试验研究.混凝土与水泥制品, 2001(6):20～21

[15] Stphanie Staquet, Bernard Espion.Influence of Cement and Silica Fume Type on Compressive Strength of Reactive Powder Concrete.In:Leung Christopher K Y, Li Zongjin, Ding Jiantong.High Performance Concrete-Workbility, Strength and Durability(2).Hong Kong:The Hong Kong University of Science and Technology, 2000

施引文献

资源附件(0)

访问统计