碳纳米管活性粉末混凝土力学性能试验研究_《混凝土与水泥制品》杂志社

头部文案

发布时间：2020-01-06 00:00:00

全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊（光盘版）全文收录期刊

华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊



碳纳米管活性粉末混凝土力学性能试验研究

Experimental Study on Mechanical Properties of Carbon Nanotube Reactive Powder Concrete

2021年第8期

活性粉末混凝土；碳纳米管；养护方式；力学性能

RPC; MWCNTs; Curing method; Mechanical property

2021年第8期

10.19761/j.1000-4637.2021.08.005.05

国家自然科学基金项目（51478345）。

刘桂凤1，朱鼎1，陈正发1，张华娣1，李岩2

1.常州大学环境与安全工程学院，江苏常州 213164；2.山东大展纳米材料有限公司，山东滨州 256600

刘桂凤1，朱鼎1，陈正发1，张华娣1，李岩2

刘桂凤,朱鼎,陈正发,等.碳纳米管活性粉末混凝土力学性能试验研究[J].混凝土与水泥制品,2021(8):5-9.

LIU G F,ZHU D,CHEN Z F,et al.Experimental Study on Mechanical Properties of Carbon Nanotube Reactive Powder Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):5-9.

浏览量:

1000

摘要：选择三种养护方式（标准养护、80 ℃热水养护、洒水养护）、设置5种碳纳米管掺量（0、0.05%、0.10%、0.15%、0.20%），研究了碳纳米管的分散性和掺量、养护方式对碳纳米管活性粉末混凝土力学性能的影响，并基于SEM测试结果对基体进行了微观分析。结果表明：经分散处理后的MWCNTs溶液的分散性和稳定性提高；相较于未分散处理的MWCNTs，MWCNTs分散液对活性粉末混凝土抗压、抗折强度的提高幅度更大；80 ℃热水养护下，当经分散处理后的MWCNTs掺量为0.10%时，MWCNTs活性粉末混凝土的抗压和抗折强度最大；标准养护和洒水养护下，当经分散处理后的MWCNTs掺量为0.15%时，MWCNTs活性粉末混凝土的抗压和抗折强度最大；SEM结果显示，胶凝材料二次水化生成了大量水化硅酸钙，减少了孔隙；碳纳米管能与基体紧密连接，阻止微裂缝的生成和扩展，起到了桥接和填充作用。 Abstract: Three kinds of curing methods(standard curing, 80 ℃ hot water curing and sprinkling curing) were selected, 5 kinds of carbon nanotube(MWCNTs) content(0, 0.05%, 0.10%, 0.15%, 0.20%)were set, the influence of the dispersibility and dosage of MWCNTs and curing methods on the mechanical properties of carbon nanotube reactive powder concrete was studied. The microstructure of matrix was characterized by SEM. The results show that the dispersion and stability of the MWCNTs solution after dispersion treatment are improved. Compared with the undispersed MWCNTs, the MWCNTs dispersion has a greater improvement in the compressive and flexural strength of reactive powder concrete. Under 80 ℃ hot water curing, when the content of dispersed MWCNTs is 0.10%, the compressive and flexural strength of MWCNTs reactive powder concrete reach the maximum. Under standard curing and sprinkling curtain curing, when the content of dispersed MWCNTs is 0.15%, the compressive and flexural strength of MWCNTs reactive powder concrete reach the maximum. SEM results show that the secondary hydration of the cementitious material produces a large amount of hydrated calcium silicate, which reduces porosity. MWCNTs can be closely connected with the matrix, preventing the formation and expansion of micro-cracks, and playing the role of bridging and filling.

英文名 : Experimental Study on Mechanical Properties of Carbon Nanotube Reactive Powder Concrete

刊期 : 2021年第8期

关键词 : 活性粉末混凝土；碳纳米管；养护方式；力学性能

Key words : RPC; MWCNTs; Curing method; Mechanical property

刊期 : 2021年第8期

DOI : 10.19761/j.1000-4637.2021.08.005.05

文章编号 :

基金项目 : 国家自然科学基金项目（51478345）。

作者 : 刘桂凤1，朱鼎1，陈正发1，张华娣1，李岩2

单位 : 1.常州大学环境与安全工程学院，江苏常州 213164；2.山东大展纳米材料有限公司，山东滨州 256600

刘桂凤1，朱鼎1，陈正发1，张华娣1，李岩2

刘桂凤,朱鼎,陈正发,等.碳纳米管活性粉末混凝土力学性能试验研究[J].混凝土与水泥制品,2021(8):5-9.

LIU G F,ZHU D,CHEN Z F,et al.Experimental Study on Mechanical Properties of Carbon Nanotube Reactive Powder Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):5-9.





摘要

参数

结论

参考文献

引用本文

Abstract: Three kinds of curing methods(standard curing, 80 ℃ hot water curing and sprinkling curing) were selected, 5 kinds of carbon nanotube(MWCNTs) content(0, 0.05%, 0.10%, 0.15%, 0.20%)were set, the influence of the dispersibility and dosage of MWCNTs and curing methods on the mechanical properties of carbon nanotube reactive powder concrete was studied. The microstructure of matrix was characterized by SEM. The results show that the dispersion and stability of the MWCNTs solution after dispersion treatment are improved. Compared with the undispersed MWCNTs, the MWCNTs dispersion has a greater improvement in the compressive and flexural strength of reactive powder concrete. Under 80 ℃ hot water curing, when the content of dispersed MWCNTs is 0.10%, the compressive and flexural strength of MWCNTs reactive powder concrete reach the maximum. Under standard curing and sprinkling curtain curing, when the content of dispersed MWCNTs is 0.15%, the compressive and flexural strength of MWCNTs reactive powder concrete reach the maximum. SEM results show that the secondary hydration of the cementitious material produces a large amount of hydrated calcium silicate, which reduces porosity. MWCNTs can be closely connected with the matrix, preventing the formation and expansion of micro-cracks, and playing the role of bridging and filling.

扫二维码用手机看

[1] 林剑,吴岳峻,高帅,等.养护温度对活性粉末混凝土孔结构的影响研究[J].硅酸盐通报,2019,38(8):2600-2605.
[2] PARAMESHWAR N H,SUBHASH C Y.Effect of different curing regimes and durations on early strength development of reactive powder concrete[J].Construction and Building Materials,2017,154:72-87.
[3] LIU J T,YANG Y,GU C P,et al.Influence of dry heating regime on the mechanical and shrinkage properties of reactive powder concrete[J].Journal of Zhejiang University-Science A(Applied Physics and Engineering),2018,19(12):926-938.
[4] PARAMESHWAR H,SUBHASH C Y.Investigation on mechanical properties of reactive powder concrete under different curing regimes[J].Materials Today:Proceedings,2017,4(9):9758-9762.
[5] RUAN Y F,HAN B G,YU X,et al.Carbon nanotubes reinforced reactive powder concrete[J].Composites Part A: Applied Science and Manufacturing,2018,112:371-382.
[6] 张高展,魏琦,丁庆军,等.超高性能混凝土配合比设计模型、水化硬化机理及微观结构的研究进展 [J].混凝土与水泥制品,2020(1):6-10,15.
[7] 阎培渝,张庆欢,杨文言.养护高温对复合胶凝材料水化性能的影响[J].电子显微学报,2006(S1):185-186.
[8] 黄杰,吴瑾,赵林.养护制度对高性能混凝土抗压强度影响的试验研究[J].硅酸盐通报,2019,38(8):2680-2682,2687.
[9] 刘斯凤,孙伟,林玮,等.掺天然超细混合材高性能混凝土的制备及其耐久性研究[J].硅酸盐学报,2003(11):1080-1085.
[10] 王强,石梦晓.养护方式对混凝土表层渗透性的影响[J].清华大学学报(自然科学版),2015,55(2):150-154.
[11] 李响,阎培渝.高温养护对复合胶凝材料水化程度及微观形貌的影响[J].中南大学学报(自然科学版),2010,41(6):2321-2326.
[12] MARIA S,KONSTA G,ZOI S,et al.Highly dispersed carbon nanotube reinforced cement based materials[J].Cement and Concrete Research,2010,40(7):1052-1059.
[13] 何锐,杨哲,张佳丽,等.基于界面改性的碳纳米管水泥基复合材料力学性能[J].长安大学学报(自然科学版),2019,39(2):19-26.
[14] 武玺旺,肖建中,夏风,等.碳纳米管的分散方法与分散机理[J].材料导报,2011,25(9):16-19.
[15] 姚武,陈雷,刘小艳.碳纳米管分散性研究现状[J].材料导报,2013,27(9):47-50,60.
[16] 刘琼,许清风,李向民.石墨烯和碳纳米管水泥基复合材料研究进展[J].混凝土与水泥制品,2016(3):25-30.
[17] 罗健林,段忠东.碳纳米管的分散性及其增强水泥材料力学性能[J].建筑结构学报,2008,29(S1):246-250.
[18] 李庚英,王培铭.碳纳米管-水泥基复合材料的力学性能和微观结构[J].硅酸盐学报,2005(1):105-108.
[19] LIU J T,JIN H,ZHAO X,et al.Effect of multi-walled carbon nanotubes on improving the toughness of reactive powder Concrete[J].Materials,2019,12(16):12162625.
[20] 赵金侠,黄亮,谢建和.不同配比和养护条件对超高性能混凝土微观结构的影响[J].中国公路学报,2019,32(7):111-119.

上一个

多元矿物掺合料对泡沫混凝土性能影响研究

下一个

膨胀剂和高吸水树脂对低水灰比GRC性能的影响

头部文案

碳纳米管活性粉末混凝土力学性能试验研究

相关文件