International Journal of Concrete Structures and Materials

Korea Concrete Institute (한국콘크리트학회)
권호 표지
DOI QR코드

DOI QR Code

Mechanical Properties of Hydrated Cement Paste: Development of Structure-property Relationships

  • Ghebrab, Tewodros T. (Dept. of Engineering Technology, Texas Tech University) ;
  • Soroushian, Parviz (Dept. Civil and Environmental Engineering, Michigan State University)
  • Received : 2009.09.10
  • Accepted : 2010.03.30
  • Published : 2010.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Theoretical models based on modern interpretations of the morphology and interactions of cement hydration products are developed for prediction of the mechanical properties of hydrated cement paste (hcp). The models are based on the emerging nanostructural vision of calcium silicate hydrate (C-S-H) morphology, and account for the intermolecular interactions between nano-scale calcium C-S-H particles. The models also incorporate the effects of capillary porosity and microcracking within hydrated cement paste. The intrinsic modulus of elasticity and tensile strength of hydrated cement paste are determined based on intermolecular interactions between C-S-H nano-particles. Modeling of fracture toughness indicates that frictional pull-out of the micro-scale calcium hydroxide (CH) platelets makes major contributions to the fracture energy of hcp. A tensile strength model was developed for hcp based on the linear elastic fracture mechanics theories. The predicted theoretical models are in reasonable agreements with empirical models developed based on the experimental performance of hcp.

Keywords

References

  1. Balshin, M. Y. “Relation of Mechanical Properties of Powder Metals and Their Porosity and the Ultimate Properties of Porous Metal-ceramic Materials” Dokl. Akad. Nauk. (SSSR), 67, No. 5, 1949, pp. 831-834.
  2. Ryshkewitch, R., “Compression Strength of Porous Sintered Alumina and Zirconia,” Journal of American Ceramics Society, Vol. 36, 1953, pp. 65-68. https://doi.org/10.1111/j.1151-2916.1953.tb12837.x
  3. Jonsson, B., Wennerstrom, H., Nonat, A., and Cabane B., “Onset of Cohesion in Cement Paste,” Langmuir, Vol. 20, 2004,pp. 6702-6709. https://doi.org/10.1021/la0498760
  4. Plassard, C., Lesniewska, E., Pochard, I., and Nonat, A., “Nanoscale Experimental Investigation of Particle Interactions at the Origin of the Cohesion of Cement,” Langmuir, Vol. 21, 2005, pp. 7263-7270. https://doi.org/10.1021/la050440+
  5. Richardson, I. G., “Tobermorite/Jennite-and Tobermorite/Calcium Hydroxide-Based Models for the Stricter of C-S-H: Applicability to Hardened Pastes of Tricalcium Silicate, BDicalcium Silicate, Portland Cement, and Blends of Portland Cement With Blast-Furnace Slag, Metakaolin, or Silica Fume,” Journal of Cement Concrete Research, Vol. 34, 2004, pp. 1733-1777. https://doi.org/10.1016/j.cemconres.2004.05.034
  6. Jennings, H. M., “A Model for the Microstructure of Calcium Silicate Hydrate in Cement Paste,” Journal of Cement Concrete Research, Vol. 30, 2000, pp. 101-116. https://doi.org/10.1016/S0008-8846(99)00209-4
  7. Thomas, J. J. and Jennings. H. M., “A Colloidal Interpretation of Chemical Aging of the C-S-H Gel and its Effects on the Properties of Cement Paste,” Journal of Cement Concrete Research, Vol. 36, 2006, pp. 30-38. https://doi.org/10.1016/j.cemconres.2004.10.022
  8. Persson, B. N. J., Sliding Friction: Physical Principles and Applications, Germany: Springer (Nanoscience and Technology), 1998, pp. 54-59.
  9. Felbeck, D. K. and Atkins, A. G., Strength and Fracture of Engineering Solids, New Jersey, Prentice-Hall, 1984.
  10. Harutyunyan, V. S., Abovyan, E. S., Monterio, P. J. M., Mkrtchyan, V. P., and Balyan, M. K., “Microstrain Distribution in Calcium Hydroxide Present in the Interfacial Transition Zone,” Journal of Cement Concrete Research, Vol. 30, 2000, pp. 709-713. https://doi.org/10.1016/S0008-8846(00)00230-1
  11. Barker, A. P., “Structural and Mechanical Characterization of Calcium Hydroxide in Set Cement and the Influence of Various Additives,” World Cement. Vol. 15, 1984, pp. 25-28.
  12. Mindess, S., Young, J. F., and Darwin, D., Concrete, New Jersey: Prentice-Hall, 2003.
  13. Diamond, S. and Bonen, D., “Microstructure of Hardened Cement Paste - A New Interpretation,” Journal of American Ceramic Society, Vol. 76, 1993, pp. 2993-2999. https://doi.org/10.1111/j.1151-2916.1993.tb06600.x
  14. Popov, V. L., “Electronic and Phononic Friction of Solids at Low Temperatures,” Tribology International, Vol. 34, 2001, pp. 277-286. https://doi.org/10.1016/S0301-679X(01)00011-1
  15. Meyer, E., Overney, R. M., Dransfeld, K., and Gyalog, T., Nanoscience: Friction and Rheology on the Nanometer Scale, Singapore: Eurasia Press, 1998.
  16. Alford, N. M., Groves, G. W. and Double, D. D., “Physical Properties of High Strength Cement Pastes,” Journal of Cement Concrete Research, Vol. 12, 1982, pp. 349-358. https://doi.org/10.1016/0008-8846(82)90083-7
  17. Ammouche, A., Breysse, D., Hornain, H., Didry, O. and Marchand, J., “A New Image Analysis Technique for the Quantitative Assessment of Microcracks in Cement-Based Materials,” Cement and Concrete Research, Vol. 30, 2000, pp. 25-35. https://doi.org/10.1016/S0008-8846(99)00212-4
  18. Tsukrov, I. and Kachanov, M., “Stress Concentrations and Microfracturing Patterns in a Brittle-Elastic Solid with Interacting Pores of Diverse Shapes,” International Journal of Solid Structures, Vol. 34, 1997, pp. 2887-2904. https://doi.org/10.1016/S0020-7683(96)00202-8

Cited by

  1. Material Performance and Animal Clinical Studies on Performance-Optimized Hwangtoh Mixed Mortar and Concrete to Evaluate Their Mechanical Properties and Health Benefits vol.8, pp.9, 2015, https://doi.org/10.3390/ma8095306
  2. Nano–micro modelling of mechanical properties of cement paste based on molecular dynamics vol.28, pp.2, 2016, https://doi.org/10.1680/adcr.15.00048