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
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- 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 /

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参考文献(15)

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