Materials and Structures

, Volume 31, Issue 4, pp 230–234 | Cite as

Improving the structure of the interfacial zone and its influence on the long-term behavior of mortars

  • Shen Yang
  • Xu Zhongzi
  • Tang Mingshu
Scientific Reports


The structure of the interfacial zone between cement paste and aggregate was improved by using a pretreated quartz aggregate on whose surface the hydraulic mineral β−C2S was directly formed. The composition and morphology of the structure of the interfacial zone was examined, and its influence was studied by comparisons between mortars made with pretreated quartz aggregate and with normal quartz aggregate. The results showed that the composition and morphology of the interfacial zone were substantially improved by the hydration of the mineral β−C2S of the pretreated quartz aggregate. The influence of the interfacial structure on the strength of mortars was related to structural development. It appears to be slight at early hydration, but significant at late hydration.


Compressive Strength Flexural Strength Portland Cement Hydrated Product Hydrated Calcium Silicate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


La structure de la zone interfaciale entre la pâte de ciment et les granulats a été améliorée au moyen d’un granulat de quartz prétraité, sur la surface duquel le minéral hydraulique β−C2S s’est formé directement. La composition et la morphologie de la structure de la zone interfaciale ont été examinées, et l’influence de la structure sur la résistance a été étudiée par comparaison entre des mortiers à base de granulats de quartz pretraités et de granulats de quartz ordinaires. Les résultats ont montré que la composition et la morphologie de la zone interfaciale ont été améliorées de façon significative par l’hydratation du minéral β−C2S du granulat de quartz pretraité. On discute des influences de la structure interfaciale sur la résistance du mortier par rapport au développement de la structure. Cette influence est faible au début de l’hydratation, mais devient significative lors de l’hydratation avancée.


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  1. [1]
    Barnes, B. D., Diamond, S., Dolch, W. L., ‘Micro, morphology of interfacial zone around, aggregates in Portland cement mortar’,J. Amer. Ceram. Soc. 62 (1) (1979) 21–25.Google Scholar
  2. [2]
    Grandet, J., Farran, J., Maso, J. C., ‘Orientation des hydrates au contact des granulats’, Proc. 7th Inter. Congr. Chem. Cem., Paris, France, 1980, Vol. III–VII, 63–67.Google Scholar
  3. [3]
    Lin Zhida, Lu Yilong, ‘Studies on interfacial zone between cement stone and quartz aggregate in concrete dam’,Guisuanyanxuebao (in Chinese)18(2) (1990) 97–101.Google Scholar
  4. [4]
    Mindess, S., Diamond, S., ‘A device for direct observation of cracking of cement paste and mortar under compressive loading within a scanning electron microscope,’Cem. Concr. Res. 12 (5) (1982) 17–22.CrossRefGoogle Scholar
  5. [5]
    Regourd, M., ‘Microstructure et propriétés des ciments, mortiers et bétons, bétons plâtres’, Chaux. 1982 No. 1: 73.Google Scholar
  6. [6]
    Maso, J. C., ‘The bond between aggregate and cement paste’, Proc. 7th Inter. Congr. Chem. Cem., Paris France, 1980 Vol I VII, 3–14.Google Scholar
  7. [7]
    Zimbelmann, R., ‘A method for strengthening the bond between cement stone and aggregate’,Cem. Concr. Res. 17 (4) (1987) 651–656.CrossRefGoogle Scholar
  8. [8]
    Larbi, J. A., Bijen, T. M., ‘Orientation of calcium hydroxide at the Portland cement paste-aggregate interface in mortars in the presence of silica fume: A contribution’,Cem. Concr. Res. 20 (4) (1990) 461–466.CrossRefGoogle Scholar
  9. [9]
    Shen Yang.,et al., ‘A new method of enhancing cement-aggregate interfaces, I. Ideal aggregate and its effect on interfacial microstructures,’Cem. Concr. Res. 22 (4) (1992), 612–620. ‘II. Mechanical properties and sulftets attack resistance on mortars’,Cem. Concr. Res. 22 (5) (1992) 769–773.CrossRefGoogle Scholar
  10. [10]
    Shen al., ‘The process of sulfate attack on cement mortar’,Adv. Cem. Bas. Mat. 4 (1) (1996) 1–5.CrossRefGoogle Scholar
  11. [11]
    Shen Yang. ‘Ideal structure between cement paste and aggregate’, Ph D Dissertation (Nanjing Institute of Chemical Technology, 1993).Google Scholar
  12. [12]
    Shen Weiet al., ‘Cement Technology’ (Press of Wuhan University of Industry, 1992) 210.Google Scholar

Copyright information

© RILEM 1998

Authors and Affiliations

  • Shen Yang
    • 1
  • Xu Zhongzi
    • 1
  • Tang Mingshu
    • 1
  1. 1.Department of Materials Science and EngineeringNanjing University of Chemical TechnologyNanjingP. R. China

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