• 11111
  • 首页
  • 期刊介绍
  • 编委会
  • 征稿启事
  • 期刊订阅
  • 相关下载
  • Email alert
  • 联系我们
引用本文:王志航,白二雷,周俊鹏,刘高杰,杨宁.VAE乳胶粉/碳纤维复合改性混凝土的力学性能[J].建筑材料学报,2024,27(6):487-495
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 160次   下载 2504 本文二维码信息
码上扫一扫!
分享到: 微信 更多
VAE乳胶粉/碳纤维复合改性混凝土的力学性能
王志航1,白二雷1,周俊鹏2,刘高杰3,杨宁4
1.空军工程大学 航空工程学院,陕西 西安 710038;2.中国人民解放军 93204部队, 北京 100077;3.中国海警局 直属第三局,广东 广州 510006;4.中国人民解放军 75840部队,广东 广州 510000
摘要:
为探究醋酸乙烯酯-乙烯共聚物(VAE)乳胶粉和碳纤维对混凝土力学性能的混杂改性效果及机理,制备了1种VAE乳胶粉改性混凝土(VAEMC)、3种碳纤维改性混凝土(CFMC)和3种VAE乳胶粉/碳纤维复合改性混凝土(VAE/CFMC),测试了改性混凝土的电阻率和力学性能,并进行了扫描电镜试验和压汞试验.结果表明:VAE乳胶粉可以促进碳纤维的分散,VAE/CFMC的电阻率小于CFMC;与CFMC相比,VAE/CFMC的力学性能更佳;VAE乳胶粉与碳纤维具有“正混杂效应”,复掺VAE乳胶粉与碳纤维时,混凝土的力学性能呈现出“1+1>2”的复合增强效果;VAE乳胶粉可以优化CFMC的孔隙结构,细化其孔径,增强碳纤维/混凝土基体界面的物理结合,使碳纤维的破坏形式由拉滑破坏转变为拉断破坏.
关键词:  混凝土  碳纤维  VAE乳胶粉  力学性能  正混杂效应  界面
DOI:10.3969/j.issn.1007-9629.2024.06.002
分类号:TU528.043
基金项目:国家自然科学基金资助项目(52278287);空军工程大学优秀博士学位论文扶持基金立项项目(KGD082323002)
Mechanical Properties of VAE Latex Powder/Carbon Fiber Co-modified Concrete
WANG Zhihang1, BAI Erlei1, ZHOU Junpeng2, LIU Gaojie3, YANG Ning4
1.School of Aviation Engineering, Air Force Engineering University, Xi’an 710038, China;2.Unit 93204, People’s Liberation Army of China, Beijing 100077, China;3.The Third Bureau of China Maritime Police Bureau, Guangzhou 510006, China;4.Unit 75840, People’s Liberation Army of China, Guangzhou 510000, China
Abstract:
To explore the hybrid modification effect of vinyl acetate-ethylene copolymer(VAE) latex powder and carbon fiber on mechanical properties of concrete and its mechanism, one kind of VAE latex powder modified concrete(VAEMC), three kinds of carbon fiber modified concrete(CFMC) and three kinds of VAE latex powder/carbon fiber co-modified concrete(VAE/CFMC) were prepared. Their resistivity and mechanical property were tested, and scanning electron microscope test and mercury intrusion porosimetry test were carried out. The results show that VAE latex powder can promote the dispersion of carbon fiber, and the resistivity of VAE/CFMC is lower than that of CFMC. Compared with CFMC, VAE/CFMC has better mechanical property, VAE latex powder and carbon fiber have positive hybrid effect. When VAE latex powder and carbon fiber are co-incorporation, the mechanical property of concrete is better than addition of the two components. VAE latex powder can improve the pore structure of CFMC, refine its pore size, reinforce the physical bond of carbon fiber/concrete matrix interface, and change the failure mode of carbon fiber from pull slip to pull break.
Key words:  concrete  carbon fiber  VAE latex powder  mechanical property  positive hybrid effect  interface
欢迎访问《建筑材料学报》编辑部网站!
  • 11111
  • 首页
  • 期刊介绍
  • 编委会
  • 征稿启事
  • 期刊订阅
  • 相关下载
  • Email alert
  • 联系我们
引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览次   下载  
分享到: 微信 更多
摘要:
关键词:  
DOI:
分类号:
基金项目:
Abstract:
Key words: