[1]叶邦土,蒋金洋,孙伟,等.玄武岩纤维增强大掺量矿物掺合料高强混凝土试验研究[J].东南大学学报(自然科学版),2011,41(3):611-615.[doi:10.3969/j.issn.1001-0505.2011.03.035]
 Ye Bangtu,Jiang Jinyang,Sun Wei,et al.Experimental study on reinforcing HSC with large volume mineral admixtures basalt fibers[J].Journal of Southeast University (Natural Science Edition),2011,41(3):611-615.[doi:10.3969/j.issn.1001-0505.2011.03.035]
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玄武岩纤维增强大掺量矿物掺合料高强混凝土试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第3期
页码:
611-615
栏目:
材料科学与工程
出版日期:
2011-05-20

文章信息/Info

Title:
Experimental study on reinforcing HSC with large volume mineral admixtures basalt fibers
作者:
叶邦土蒋金洋孙伟王彩辉胡君
(东南大学材料科学与工程学院, 南京 211189)
(东南大学江苏省土木工程材料重点实验室, 南京 211189)
Author(s):
Ye BangtuJiang JinyangSun WeiWang CaihuiHu Jun
(School of Materials Science and Engineering, Southeast University, Nanjing 211189, China)
(Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing 211189, China)
关键词:
玄武岩纤维高强混凝土耐碱腐蚀弯曲韧性阻裂性能收缩性能
Keywords:
basalt fiber HSC (high strength concrete) alkali corrosion-resistance flexural toughness crack-resistance shrinkage
分类号:
TU528
DOI:
10.3969/j.issn.1001-0505.2011.03.035
摘要:
为了研究玄武岩纤维增强高强混凝土(HSC)的增韧阻裂性能,采用腐蚀失重指标和环境扫描电镜(ESEM)微观分析方法,研究了不同玄武岩纤维耐碱腐蚀行为; 在此基础上,系统地研究了玄武岩纤维种类及长度对大掺量矿物掺合料高强混凝土抗折强度、弯曲韧性、阻裂性能和收缩性能的影响.试验结果表明:玄武岩纤维具有较好的耐碱性, 能显著提高 HSC的弯曲韧度和阻裂性能,而且掺玄武岩纤维(Vf=0.3%)的HSC开裂指数仅为基准混凝土的6.7%; 此外,玄武岩纤维对HSC抗折强度提高不大,对干缩性能也有一定的负面影响.
Abstract:
In order to study the toughness and crack-resistance of basalt fiber-reinforced high strength concrete(HSC) the alkali corrosion-resistance of different types of basalt fiber was investigated by weight loss and ESEM(environmental scanning electron microscopy) morphology. Then the effects of different types and different lengths of basalt fibers on flexural strength, flexural toughness, crack-resistance and shrinkage of HSC with large volume mineral admixtures were investigated systematically. The results show that basalt fibers have excellent stability in alkaline solution, and can significantly enhance the flexural toughness and crack-resistance of HSC. Especially, when the addition volume of basalt fibers is 0. 3%, the crack index of HSC is only 6. 7% of that of HSC with no fiber. However, the basalt fibers can not evidently improve the flexural strength of HSC and it has some negative effect on properties of drying shrinkage.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:叶邦土(1987—),男,硕士生;孙伟(联系人),女,教授,中国工程院院士,sunwei@seu.edu.cn.
基金项目:国家自然科学基金资助项目(50778039)、国家高技术研究发展计划(863计划)资助项目(2008AA030704)。
引文格式: 叶邦土,蒋金洋,孙伟,等.玄武岩纤维增强大掺量矿物掺合料高强混凝土试验研究[J].东南大学学报:自然科学版,2011,41(3):611-615.[doi:10.3969/j.issn.1001-0505.2011.03.035]
更新日期/Last Update: 2011-05-20