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[1]傅乃强,徐洪钟,张苏俊.纤维粉煤灰改良膨胀土无侧限抗压强度试验[J].南京工业大学学报(自然科学版),2018,40(01):133-137.[doi:10.3969/j.issn.1671-7627.2018.01.021]
 FU Naiqiang,XU Hongzhong,ZHANG Sujun.Unconfined compressive strength test on expansive soil reinforced with fiber and fly ash[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(01):133-137.[doi:10.3969/j.issn.1671-7627.2018.01.021]
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纤维粉煤灰改良膨胀土无侧限抗压强度试验()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年01期
页码:
133-137
栏目:
出版日期:
2018-01-20

文章信息/Info

Title:
Unconfined compressive strength test on expansive soil reinforced with fiber and fly ash
文章编号:
1671-7627(2018)01-0133-05
作者:
傅乃强12徐洪钟2张苏俊1
1.扬州工业职业技术学院 建筑工程学院,江苏 扬州 225101; 2.南京工业大学 交通运输工程学院,江苏 南京 210009
Author(s):
FU Naiqiang12XU Hongzhong2ZHANG Sujun1
1.Department of Civil Engineering & Architecture,Yangzhou Polytechnic Institute,Yangzhou 225101,China; 2.College of Transportation Science & Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
膨胀土 玄武岩纤维 粉煤灰 碱激发 无侧限抗压强度
Keywords:
expansive soil basalt fiber fly ash alkali activation unconfined compressive strength
分类号:
TU443
DOI:
10.3969/j.issn.1671-7627.2018.01.021
文献标志码:
A
摘要:
为研究碱激发粉煤灰、玄武岩纤维对膨胀土的改良效果,开展无侧限抗压强度试验,分析了碱激发剂的类型及掺量、纤维和粉煤灰掺量以及养护龄期对改良土强度的影响。研究结果表明:Na2CO3、Na2SiO3、NaOH 3种碱激发剂中,Na2SiO3的激发效果较好; 单掺纤维或粉煤灰均能够提高土体的强度,纤维粉煤灰共同改良的膨胀土强度高于相同掺量下的单掺纤维和单掺粉煤灰改良土强度; 纤维的加入改善了粉煤灰土样的脆性破坏模式; 随着养护龄期的增长,改良土的强度逐渐提高。
Abstract:
The effectiveness of basalt fiber-fly ash as an additive in reinforcing expansive soils was evaluated.A serious of unconfined compressive strength test was carried out to study the influence of alkali-activator,fiber content,fly ash content and curing time on the bearing capacity of expansive soil.The results showed that for the three kind of alkali activator(Na2CO3,Na2SiO3 and NaOH),Na2SiO3 had a better alkali activation effect; adding fiber and fly ash could both improve the bearing capacity of expansive soil.Moreover,the improving effect was better when added together.The addition of fibers greatly improved the fracture toughness of soil and the strength of reinforced soil grows with curing age.

参考文献/References:

[1] 王保田,张福海.膨胀土的改良技术与工程应用[M].北京:科学出版社,2009.
[2] 刘特洪.工程建设中的膨胀土问题[M].北京:中国建筑工业出版社,1997.
[3] 孔令伟,陈正汉.特殊土与边坡技术发展综述[J].土木工程学报,2012(5):141.
[4] 唐朝生,施斌,高玮.聚丙烯纤维和水泥对黏性土强度的影响及机理研究[J].工程地质学报,2007(1):108.
[5] ZHANG M,GUO H,EI-KORCHI T.Experimental feasibility study of geopolymer as the next-generation soil stabilizer[J].Construction and building materials,2013,47:1468.
[6] 查甫生,刘松玉,杜延军.石灰-粉煤灰改良膨胀土试验[J].东南大学学报(自然科学版),2007,37(2):339.
[7] KUMAR A,WALIA,BAJAJ A.Influence of fly ash,lime and polyester fibers on compaction and strength properties of expansive soil[J].Journal of materials incivil engineering,2007,19(3):242.
[8] KRISHNAN D,JANANI V,RAVICHANDRAN P T.Effects of fly ash and phosphogypsum on properties of expansive soils[J].International journal of scientific engineering & technology,2014,3(5):592.
[9] ROY D M.Alkali-activated cements:opportunities and challenges[J].Cement and concrete research,1999,29(2):249.
[10] SHI C J,KRIWENKOP V,ROY D M.Alkali-activated cements andconcretes[M].New York:Taylor and Francis,2006.
[11] SWANEPOELJC,STRYDOM C A.Utilisation of fly ash in a geopolymeric material[J].Applied geochemistry,2002,17(8):1143.
[12] PALOMO A,GRUTZECK M W,BLANCO M T.Alkali-activated fly ashes:a cement for the future[J].Cement and concrete research,2009,29:1323.

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备注/Memo

备注/Memo:
收稿日期:2017-05-10
基金项目:国家自然科学基金(41072217)
作者简介:傅乃强(1990—),男,江苏南京人,硕士,主要研究方向为岩土地下工程; 徐洪钟(联系人),教授,E-mail:hzhxu@163.com.
引用本文:傅乃强,徐洪钟,张苏俊.纤维粉煤灰改良膨胀土无侧限抗压强度试验[J].南京工业大学学报(自然科学版),2018,40(1):133-137..
更新日期/Last Update: 2018-01-18