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Slowing down the degradation of concrete by urea: use of glass powder

Author Affiliations

  • 1Laboratoire de Géomatériaux, Unité de formation et de Recherche des Science de la Terre, Université Félix Houphouët Boigny 22 BP 582 Abidjan
  • 2Laboratoire de Géomatériaux, Unité de formation et de Recherche des Science de la Terre, Université Félix Houphouët Boigny 22 BP 582 Abidjan
  • 3Laboratoire de Géomatériaux, Unité de formation et de Recherche des Science de la Terre, Université Félix Houphouët Boigny 22 BP 582 Abidjan
  • 4Laboratoire de Géomatériaux, Unité de formation et de Recherche des Science de la Terre, Université Félix Houphouët Boigny 22 BP 582 Abidjan

Res. J. Engineering Sci., Volume 9, Issue (2), Pages 13-18, May,26 (2020)

Abstract

Some concrete structures can be subjected to aggressive environmental conditions and degrade early. To cancel or reduce this degradation, physical and chemical solutions are proposed. This work is a contribution to limiting the degradation of concrete by using waste such as used bottles. Its objective is to slow the progression of concrete deterioration by adding glass powder obtained by grinding used bottles. A finely ground glass powder was added to concrete in varying proportions and then specimens were made. After maturing for 28 days in water, these specimens were immersed in urea solution for four weeks. Each week, some specimens are removed and subjected to various tests (sclerometric index, ultrasonic test, compression test, mass loss and density). Analysis of the results indicates that adding glass powder to concrete increases surface hardness, reduces the amount of vacuum and increases compressive strength. All these improvements are due to secondary CSH training. Comparison of digestion rates from glass-free concrete to glass-powdered concrete shows that the latter is resistant to urea degradation. The addition of powder to concrete is therefore a way of improving the durability of structures in the face of certain chemical degradation agents.

References

  1. Assié, S. (2004)., Durabilité des bétons auto-plaçants., Doctoral dissertation, Toulouse, INSA.
  2. El Barrak, M. (2003)., Contribution à l, Revue Française de Génie Civil, 7(1), 115-115.
  3. Gramont F. (1998)., Bétons Hautes performances: Contribution à l'élaboration de règles de formulation., Thèse de doctorat, Toulouse INSA (France)
  4. Garros M. (2007)., Composites cimentaires incorporant des granulats caoutchouc issu du broyage de pneus usagés: optimisation de la composition et caractérisation., PhD, Paul Sabattier,Université Toulouse (France)
  5. Kurt H. (1995)., Chemical Substances Affecting Concrete., Cement Bulletin, 63, 3-11
  6. Bretron A., Escadeillas G. Duchesne J G. (2004)., Cement pastes alteration by liquid manure organic acids: chemical and mineralogical characterization., Cement and Concrete Research, 34(10), 1823-1835
  7. Bretron A., Duchesne J., Escadeillas G. (2005)., Attack of cement pastes exposed to organic acids in manure., Cement and Concrete Composites, 27(9-10), 898-909.
  8. De Belie N., De Coster V., Van Nieuwenburgt D. (1997)., Use of ash or silica fume to increase the resistance of concrete to feed acids., 49(181), 337-344 https://doi.org/10.1680/macr.1997.49.181.337
  9. Dyer T. (2017)., Influence of cement type on resistance to organic acids., Magazinz of concrete Research, 69(4), 175-200. https://doi.org/10.1680/jmacr.16.00271
  10. Gruyaert E., Van den Heede P., Maes M. De Belie N. (2012)., Investigation of the influence of blast-furnace slag on the resistance of concrete against organic acid or sulphate attack by means of accelerated degradation tests., Cement Concrete research, 42, 173-185
  11. Chen W. and Brouwers H. J. H. (2007)., The hydration of slag: Part2. Reaction models for blended cement., Journal of Material Sciences, 42 (2) 444-464.
  12. Richardson, I. G. (2000)., The nature of the hydration products in hardened cement pastes., Cement and Concrete Composites, 22(2), 97-113.
  13. Gruyaert E., Maes N., De Belie N., (2013)., Performance of BFS concrete: k-value concept versus equivalent performance concept., Construction and Building Materials 47, 441-455 http://dx.doi.org/10.1016/j.conbuildmat. 2013.05.006.