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Mechanics of Time-Dependent Materials

, Volume 17, Issue 2, pp 223–242 | Cite as

Rheological behaviour of hydraulic lime-based grouts. Shear-time and temperature dependence

  • Ana Bras
  • Fernando M. A. Henriques
  • M. T. Cidade
Article

Abstract

This paper deals with the coupled effect of temperature and fly ash (FA) addition on rheological behaviour of natural hydraulic lime (NHL5) based grouts, currently used in masonry consolidation. The use of a grout injection technique for masonry consolidation may lead to an increase of hydrostatic pressure and lead to structural damage. This means that the thixotropic effects become self-evident in grout design. It was shown that there is a relation between the structuration rate of each grout and the pressure that occurs inside masonry during its consolidation. According to the results, it seems also that there is a grout threshold temperature (T limit) that separates a domain where the grout build-up structure area is almost constant, from another where flocculation area starts to increase significantly. We believe that in the first region the thixotropic effects are almost isolated from the irreversible effects (due to hydration). For the NHL5 based grout T limit=20 °C and for the grout with NHL5+15 % of FA T limit=15 °C. Grouts’ characterization based on maximum resisting time, structuration rate and on the analysis of the hydraulic lime grout behaviour tested at different shear rates was performed using a shear thinning model and assuming that the structure is shear- and time-dependent.

The goal is to use this methodology during mix proportioning and design for masonry injection purpose. The tested grout compositions were optimized compositions obtained in previous research using the design of experiments method.

Keywords

Hydraulic lime grout Structuration rate Temperature Fly ash Thixotropy 

Notes

Acknowledgements

The authors wish to acknowledge the support of Engs. Dina Frade, Angela Nunes and Vitor Vermelhudo for the supply of natural hydraulic lime, fly ash and material characteristics’ results and Mr. Jorge Silvério who contributed to materials’ preparation.

References

  1. Banfill, P.F.G., Saunders, D.C.: On the viscometric examination of cement pastes. Cem. Concr. Res. 11, 363–370 (1981) CrossRefGoogle Scholar
  2. Barnes, H.: Thixotropy—a review. J. Non-Newton. Fluid Mech. 70, 1–33 (1997) CrossRefGoogle Scholar
  3. Barnes, H.A., Hutton, J.F., Walters, K.: An Introduction to Rheology. Rheology Series, vol. 3. Elsevier, Amsterdam (2001) Google Scholar
  4. Billberg, P.: Form pressure generated by self-compacting concrete-influence of thixotropy and structural behaviour at rest. Dissertation, School of Architecture and the Built Environment, Royal Institute of Technology, Sweden (2006) Google Scholar
  5. Bras, A., Henriques, F.: The influence of the mixing procedures on the optimization of fresh grout properties. RILEM Mater. Struct. 42, 1423–1432 (2009) CrossRefGoogle Scholar
  6. Bras, A., Henriques, F.: Natural hydraulic lime based grouts—the selection of grout injection parameters for masonry consolidation. Constr. Build. Mater. 26, 135–144 (2012) Google Scholar
  7. Bras, A., Henriques, F., Cidade, M.T.: Effect of environmental temperature and fly ash addition in hydraulic lime grout behaviour. Constr. Build. Mater. 24, 1511–1517 (2010) CrossRefGoogle Scholar
  8. Cheng, D., Evans, F.: Phenomenological characterization of the rheological behaviour of inelastic reversible thixotropic and antithixotropic fluids thixotropy. Br. J. Appl. Phys. 16, 1599–1617 (1965) CrossRefGoogle Scholar
  9. Coussot, P., Nguyen, Q.D., Huynh, H.T., Bonn, D.: Avalanche behavior in yield stress fluids. Phys. Rev. Lett. 88(7), 175501 (2002) CrossRefGoogle Scholar
  10. Eriksson, M., Friedrich, M., Vorschulze, C.: Variations in the rheology and penetrability of cement-based grouts—an experimental study. Cem. Concr. Res. 34, 1111–1119 (2004) CrossRefGoogle Scholar
  11. Fernàndez-Altable, V., Casanova, I.: Influence of mixing sequence and superplasticiser dosage on the rheological response of cement pastes at different temperatures. Cem. Concr. Res. 36, 1222–1230 (2006) CrossRefGoogle Scholar
  12. Hackley, V.A., Ferraris, C.F.: Guide to rheological nomenclature for liquid-based particle systems. National Institute of Standards and Technology, US Department of Commerce, Special Publication 946 (2001) Google Scholar
  13. Lapasin, R., Papo, A., Rajgelj, S.: Flow behaviour of cement pastes. A comparison of different rheological instruments and techniques. Cem. Concr. Res. 13, 349–356 (1983) CrossRefGoogle Scholar
  14. Otsubo, Y., Miyai, S., Umeya, K.: Time-dependent flow of cement pastes. Cem. Concr. Res. 10, 631–638 (1980) CrossRefGoogle Scholar
  15. Ovaralez, G., Roussel, N.: A physical model for the prediction of lateral stress exerted by self-compacting concrete on formwork. Mater. Struct. 39, 269–279 (2006) CrossRefGoogle Scholar
  16. Rosquoët, F., Alexis, A., Khelidj, A., Phelipot, A.: Experimental study of cement grout: rheological behavior and sedimentation. Cem. Concr. Res. 33, 713–722 (2003) CrossRefGoogle Scholar
  17. Roussel, N.: Steady and transient flow behaviour of fresh cement pastes. Cem. Concr. Res. 35, 1656–1664 (2005) CrossRefGoogle Scholar
  18. Roussel, N.: A thixotropy model for fresh fluid concretes: theory, validation and applications. Cem. Concr. Res. 36, 1797–1806 (2006) CrossRefGoogle Scholar
  19. Roussel, N., Cussigh, F.: Distinct-layer casting of SCC: the mechanical consequences of thixotropy. Cem. Concr. Res. 38, 624–632 (2008) CrossRefGoogle Scholar
  20. Roussel, N., et al.: The origins of thixotropy of fresh cement pastes. Cem. Concr. Res. 42, 148–157 (2012) CrossRefGoogle Scholar
  21. Saak, A.: Characterization and modelling of the rheology of cement paste. With applications toward self-flowing materials. PhD thesis, Northwestern University (2000) Google Scholar
  22. Sonebi, M.: Rheological properties of grouts with viscosity modifying agents as diutan gum and welan gum incorporating pulverised fly ash. Cem. Concr. Res. 36, 1609–1618 (2006) CrossRefGoogle Scholar
  23. Valluzzi, M.R.: Requirements for the choice of mortar and grouts for consolidation of three-leaf stone masonry walls. Paper presented at the Workshop Repair Mortars for historic masonry, Delft University of Technology, Delft (2005) Google Scholar
  24. Wallevik, J.: Rheological properties of cement paste: thixotropic behavior and structural breakdown. Cem. Concr. Res. 39, 14–29 (2009a) CrossRefGoogle Scholar
  25. Wallevik, O.: Introductions to rheology of fresh concrete, course compendium. In: ICI Rheocenter Course, Reykjavik, Iceland, 17–18th August (2009b) Google Scholar
  26. Yahia, A., Khayat, K.: Analytical models for estimating yield stress of high-performance pseudoplastic grout. Cem. Concr. Res. 31, 731–738 (2003) CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • Ana Bras
    • 1
  • Fernando M. A. Henriques
    • 2
  • M. T. Cidade
    • 2
  1. 1.ESTBarreiro/IPSPolytechnic Institute of SetúbalLavradioPortugal
  2. 2.Department of Civil EngineeringNOVA University of LisbonCaparicaPortugal

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