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水泥早期水化产物的TEM研究 被引量：5

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摘要 通过透射电子显微术(TEM)研究了水泥早期水化产物Ca(OH)2、水化硅酸钙凝胶(CSH)、钙矾石(AFt)、单硫水化硫铝酸钙(AFm)微观形貌、结晶形态、元素构成.并结合SEM与XRD研究结果,讨论了TEM在研究水泥早期水化产物方面优势.研究结果表明,使用TEM研究水泥早期水化产物,其观察结果比SEM更加精确和可靠.水化初期生成CSH凝胶为具有大量皱褶非晶态箔状产物,其Ca/Si比为1.3±0.2;水化初期生成AFt和AFm,发现了两者微观貌差别,确认了两者均为由尺寸小于20nm纳米晶粒无序组成多晶层状结构.本文讨论了SEM和TEM方法分别所CSH凝胶Ca/Si比差异原因.
作者 韩松 阎培渝 刘仍光
机构地区 清华大学土木工程系 北京交通大学土木建筑工程学院 青岛农业大学建筑工程学院
出处 《中国科学：技术科学》 EI CSCD 北大核心 2012年第8期879-885,共7页 Scientia Sinica(Technologica)
基金 国家自然科学基金面上项目(批准号:U1134008 50772053)资助
关键词 TEM 早期水化产物 元素构成 微观形貌 结晶形态
分类号 TU528.01 [建筑科学—建筑技术科学]
  • 相关文献

参考文献7

  • 1Morin V, Cohen T F. Superplasticizer effects on setting and structuration mechanisms of ultrahigh-performance concrete. Cement Concr Res, 2001, (31): 63-71.
  • 2Roncero J, Vails S, Gettu R. Study of the influence of superplasticizers on the hydration of cement paste using nuclear magnetic resonance and X-ray diffraction techniques. Cement Concr Res, 2002, (32): 103-108.
  • 3Prince W, Edwards M, Aitcin P C. Interaction between ettringite and a polynaphthalene suffocate superplasticizer in a cementitiouspaste. Cement Concr Res, 2002, (32): 79-85.
  • 4蒋亚清.掺梳形减水剂水泥浆体早期水化产物形貌研究[J].中国工程科学,2011,13(9):69-75. 被引量：5
  • 5Gallucci E, Mathur P, Scrivener K. Microstructural development of early age hydration shells around cement grains.Cement Concr Res. 2010, (40): 4-13.
  • 6Plank J, Dai Z, Andres P R. Prepm'ation and characterization of new Ca-Al-polycarboxylatelayered double hydroxides. Mater Lett, 2006, (60): 3614-3617.
  • 7魏风艳,吕忆农,兰祥辉,许仲梓.粉煤灰水泥基材料的水化产物[J].硅酸盐学报,2005,33(1):52-56. 被引量：45

二级参考文献16

  • 1Etsuo Sakai, Kazuo Yamada, Akira Ohta. Molecular structure and dispersion-adsorption mechanisms of comb-type superplasticizers used in Japan [J]. Journal of Advanced Concrete Technology, 2003,1(1) : 16-25.
  • 2Mario Collepardi. Admixtures-enhancing concrete performance [ A]. 6th International Congress, Global Construction, Ultimate Concrete Opportunities, Dundee, 2005.
  • 3Princea W, Edwards - Lajnef M, Aitcin P C. Interaction between ettringite and a polynaphthalene sulfonate superplasticizer in a cementitious paste [J]. Cement and Concrete Research,2002,32 : 79 - 85.
  • 4Robert J Flatt, Yves F Houst. A simplified view on chemical effects perturbing the action of superplasticizers [ J ]. Cement and Concrete Research,2001,31 : 1169 - 1176.
  • 5Robert J Flatt, Paul Bowen. Electrostatic repulsion between particles in cement suspensions: domain of validity of linearized Poisson-Bohzmann equation for nonideal electrolytes [J]. Cement and Concrete Research,2003,33 : 781 -791.
  • 6Morin V, Cohen Tenoudji F, Feylessoufi A, et al. Superplasticizer effects on setting and structuration mechanisms of ultrahigh-performance concrete[ J ]. Cement and Concrete Research, 2001,31 : 63 -71.
  • 7Kazuhiro Yoshiokaa, Ei - ichi Tazawa, Kenji Kawai, et al, Adsorption characteristics of superplasticizers on cement component minerals[J]. Cement and Concrete Research, 2002,32 : 1507 - 1513.
  • 8Kazuo Yamada, Tomoo Takahashi, Shunsuke Hanehara, et al. Effects of the chemical structure on the properties of polycarboxylate-type superplasticizer [ J ]. Cement and Concrete Research, 2000,30 : 197 - 207.
  • 9Joana Roneero, Susanna Vails, Ravindra Gettu. Study of the influence of superplasticizers on the hydration of cement paste using nuclear magnetic resonance and X-ray diffraction techniques [J]. Cement and Concrete Research,2002,32 : 103 - 108.
  • 10Matschei T, Lothenbach B, Glasser FP. The AFro phase in Portland cement[ J]. Cement and Concrete Research,2007,37 : l 18 - 130.

共引文献47

同被引文献42

引证文献5

二级引证文献26

中国科学：技术科学
2012年 第8期

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