Effects of Metakaolin on Nanomechanical Properties of Cement Paste

Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 10)


Metakaolin (MK) is a pozzolanic material, which is a dehydroxylated form of the clay mineral kaolinite. It is obtained by calcination of kaolinite clay at a temperature between 500 °C and 800 °C. In cement matrix, MK reacts with Ca(OH)2, to produce calcium silicate hydrate (CSH) gel. MK also contains alumina that reacts with Ca(OH)2 to produce additional alumina-containing phases, including C4AH13, C2ASH8 and C3AH6. This research aims to provide a better understanding of the effects of MK on the nanomechanical properties of the main phases present within the cement paste. Two different mixes were prepared, one control mix and the other one with 10 % MK (by cement weight). A constant water-binder ratio of 0.4 was used for both the mixes. Fraction volumes determined from nanoindentation testing show an increase in the amounts of high-density CSH at the cost of low-density CSH gel in cement pastes containing 10 % MK.


Cement Paste Calcium Silicate Hydrate Cement Matrix Indentation Hardness Frequency Plot 


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  1. 1.
    Wild, S., Khatib, J.M., Jones, A.: Relative strength, pozzolanic activity and hydration in superplasticised metakaolin concrete. Cem. Concr. Res. 26(10), 1537–1544 (1996)CrossRefGoogle Scholar
  2. 2.
    Coleman, N.J., Page, C.L.: Aspects of the pore solution chemistry of hydrated cement pastes containing MK. Cem. Concr. Res. 27(1), 147–154 (1997)CrossRefGoogle Scholar
  3. 3.
    Frias, M., Cabrera, J.: Pore size distribution and degree of hydration of metakaolin-cement pastes. Cem. Concr. Res. 30(40), 561–569 (2000)CrossRefGoogle Scholar
  4. 4.
    Asbridge, A.S., Page, C.L., Page, M.M.: Effects of metakaolin, water/binder ratio and interfacial zones on the micro hardness of cement mortars. Cem. Concr. Res. 32(9), 1365–1369 (2002)CrossRefGoogle Scholar
  5. 5.
    Sabir, B.B., Wild, S., Bai, J.: Metakaolin and calcined clay as pozzolans for concrete: a review. Cem. Concr. Comp. 16(1), 441–454 (2001)CrossRefGoogle Scholar
  6. 6.
    Zhang, M.H., Malhotra, V.M.: Characteristics of a thermally activated alumino-silicate pozzolanic material and its use in concrete. Cem. Concr. Res. 25, 1713–1725 (1995)CrossRefGoogle Scholar
  7. 7.
    Curcio, F., DeAngelis, B.A., Pagliolico, S.: Metakaolin as a pozzolanic microfiler for high-performance mortars. Cem. Concr. Res. 28(6), 803–809 (1996)CrossRefGoogle Scholar
  8. 8.
    Mondal, P., Shah, S.P., Marks, L.D.: A reliable technique to determine the local mechanical properties at the nano-scale for cementitious materials. Cem. Concr. Res. 37(2), 1440–1444 (2007)CrossRefGoogle Scholar
  9. 9.
    Sorelli, L., Constantinides, G., Ulm, F.J., Toutlemonde, F.: The nano-mechanical signature of ultra high performance concrete by statistical nanoindentation techniques. Cem. Concr. Res. 38(12), 1447–1456 (2008)CrossRefGoogle Scholar
  10. 10.
    Vandamme, M., Ulm, F.J., Fonollosa, P.: Nanogranular packing of C-S-H at substochiometric conditions. Cem. Concr. Res. 40(1), 14–26 (2010)CrossRefGoogle Scholar
  11. 11.
    Fischer-Cripps, A.C.: Critical review of analysis and interpretation of nanoindentation test data. Surf Coat. Technol. 200(14-15), 4153–4165 (2006)CrossRefGoogle Scholar
  12. 12.
    Shokrieh, M.M., Hosseinkhani, M.R., Naimi-Jamal, M.R., Tourani, H.: Nanoindentation and nanoscratch investigations on graphene-based nanocomposites. Polym. Test. 32, 45–51 (2013)CrossRefGoogle Scholar
  13. 13.
    Constantinides, G., Ulm, F.-J.: The nanogranular nature of C-S-H. J. Mech. Phys. Solids 55(1), 64–90 (2007)CrossRefMATHGoogle Scholar
  14. 14.
    Acker, P.: Micromechanical analysis of creep and shrinkage mechanisms. In: Ulm, F.J., Bazant, Z.P., Wittmann, F.H. (eds.) Creep, shrinkage and durability mechanics of concrete and other quasi-brittle materials. Elsevier, Cambridge (2001)Google Scholar
  15. 15.
    Zhu, W., Huges, J.J., Bicanic, N., Pearce, C.J.: Nanoindentation mapping of mechanical properties of cement paste and natural rocks. Mater. Charact. 58, 1189–1198 (2007)CrossRefGoogle Scholar
  16. 16.
    Constantinides, G., Ulm, F.-J.: The effect of two types of C-S-H on the elasticity of cement-based materials: results from nanoindentation and micromechanical modelling. Cem Concr Res 34(1), 67–80 (2004)CrossRefGoogle Scholar

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© RILEM 2015

Authors and Affiliations

  1. 1.Department of Civil EngineeringCurtin UniversityPerthAustralia

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