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Gradual transformation of Ca(OH)2 into CaCO3 on cement hydration

XRD study

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Abstract

The low temperature of decomposition of some calcium carbonates and the bending of the TG curves of hydrated cement between 500 and 800°C suggested the presence of some complex compound(s), which needed complementary investigation (XRD, TG). Stepwise transformation of portlandite (and/or lime) into calcium carbonate, with intermediate steps of calcium carbonate hydroxide hydrates (CCH-1 to CCH-5), was indicated by the previous study of two OPC.

This was checked here on four cements ground for t g=15, 20, 25 and 30 min and hydrated either in water vapour, successively at RH=1.0, 0.95 and 0.5 for 2 weeks each (WR1, WR2 and WR3, respectively) or as mortars in liquid water (1m), followed by WR as above. The d[001] spacing of portlandite was confirmed to vary: here between the lowest and the highest standard values. The diffractograms of n=32 different samples were analyzed for presence of standard CCH peaks, generally slightly displaced. These were: CCH-1 [Ca3(CO3)2(OH)2]: N=11 peaks, of three different d[hkl] spacings, CCH-2 [Ca6(CO2.65)2(OH657)7(H2O)2]: N=10 for two d[hkl], CCH-3 [Ca3(CO3)2(OH)2·1.5H2O]: N=14 for five d[hkl], CCH-4, ikaite [CaCO3(H2O)6]: N=13 for six d[hkl], CCH-5[CaCO3(H2O)]: N=15 for five d[hkl]. Thus the most probable is the presence of the last three. The stepwise transformation of Ca(OH)2 into CaCO3 was confirmed:

portlandite (varying d[001])→CCH-1→CCH-2→CCH-3→CCH-4→CCH-5→CaCO3

The content of CCH was the highest at t gr=15 min, decreasing down to t gr=25 min and increasing slightly at 30 min, as inferred from the number of the peaks observed. After cement powder hydration at RH=1.0 (WR1) peak number increased gradually from CCH-1 to CCH-5, whereas in the hydrated mortar (1m) the peak number decreased from CCH-1 to CCH-5, indicating the respective progress of the carbonation reaction.

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References

  1. SC Mojumdar K Mazanec M Drabik (2006) J. Therm. Anal. Cal. 83 135 Occurrence Handle10.1007/s10973-005-7045-5 Occurrence Handle1:CAS:528:DC%2BD28XitF2ntrk%3D

    Article  CAS  Google Scholar 

  2. C Tomasi O Ricci G Perotti P Ferloni (2006) J. Therm. Anal. Cal. 84 33 Occurrence Handle10.1007/s10973-005-7264-9 Occurrence Handle1:CAS:528:DC%2BD28XjsVOmsb0%3D

    Article  CAS  Google Scholar 

  3. RMH Lawrence TJ Mays P Walker D D’Ayala (2006) J. Therm. Anal. Cal. 85 377 Occurrence Handle10.1007/s10973-005-7302-7 Occurrence Handle1:CAS:528:DC%2BD28Xptlagsbc%3D

    Article  CAS  Google Scholar 

  4. I Janotka SC Mojumdar (2005) J. Therm. Anal. Cal. 81 197 Occurrence Handle10.1007/s10973-005-0767-6 Occurrence Handle1:CAS:528:DC%2BD2MXlslOltrk%3D

    Article  CAS  Google Scholar 

  5. ET Stepkowska JM Martinez-Blanes A Justo MA Aviles JL Perez-Rodriguez (2005) J. Therm. Anal. Cal. 80 193 Occurrence Handle10.1007/s10973-005-0635-4 Occurrence Handle1:CAS:528:DC%2BD2MXktl2ksro%3D

    Article  CAS  Google Scholar 

  6. ET Stepkowska (2005) J. Therm. Anal. Cal. 80 727 Occurrence Handle10.1007/s10973-005-0721-7 Occurrence Handle1:CAS:528:DC%2BD2MXks1CjtLw%3D

    Article  CAS  Google Scholar 

  7. ET Stepkowska (2006) J. Therm. Anal. Cal. 84 1 Occurrence Handle10.1007/s10973-005-7179-5 Occurrence Handle1:CAS:528:DC%2BD28XjsVOntbc%3D

    Article  CAS  Google Scholar 

  8. ET Stepkowska JM Bijen JL Perez-Rodriguez A Justo PJ Sanchez-Soto MA Aviles (1994) J. Thermal Anal. 42 41 Occurrence Handle10.1007/BF02546991 Occurrence Handle1:CAS:528:DyaK2cXmtFWmsro%3D

    Article  CAS  Google Scholar 

  9. G Schimmel (1970) Natura 57 38 Occurrence Handle1:CAS:528:DyaE3cXosFKqtQ%3D%3D

    CAS  Google Scholar 

  10. G Schimmel (1970) Phys. Blatter 5 213

    Google Scholar 

  11. BW Liebich H Sarp (1985) Schweiz. Mineral. Petrogr. Mitt. 65 153 Occurrence Handle1:CAS:528:DyaL28XmtFOjsr8%3D

    CAS  Google Scholar 

  12. D. Smith and Schultz, Penn State University, University Park, Pennsylvania, USA, ICD Grant-in-Aid (1983).

  13. A. Winchell and H. Winchell, Microscopic Character of Artificial Inorg. Solid Sub. 95, 1964.

  14. B Dickens WE Brown (1970) Inorg. Chem. 9 480 Occurrence Handle10.1021/ic50085a010 Occurrence Handle1:CAS:528:DyaE3cXpsVWqug%3D%3D

    Article  CAS  Google Scholar 

  15. KF Hesse H Kueppers E Suess (1983) Z. Kristallogr. 163 227 Occurrence Handle1:CAS:528:DyaL3sXlsl2itLo%3D Occurrence Handle10.1524/zkri.1983.163.3-4.227

    Article  CAS  Google Scholar 

  16. G Taylor (1975) Am. Mineral. 60 690 Occurrence Handle1:CAS:528:DyaE2MXls1Kqtbw%3D

    CAS  Google Scholar 

  17. H Effenberger (1981) Monatsh. Chem. 112 899 Occurrence Handle10.1007/BF00905061 Occurrence Handle1:CAS:528:DyaL3MXls1Sgtr4%3D

    Article  CAS  Google Scholar 

  18. H Effenberger K Lueger-Ging (1980) European Crystallographic Meeting 6 107

    Google Scholar 

  19. ET Stepkowska JL Perez-Rodriguez MJ Sayagues JM Martinez-Blanes (2003) J.Therm. Anal. Cal. 73 247 Occurrence Handle10.1023/A:1025158213560 Occurrence Handle1:CAS:528:DC%2BD3sXmt1emt70%3D

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Institute of Hydro-Engineering PAS, Gdańsk, Poland, 80-953

    Ewa T. Stepkowska

  2. Instituto de Ciencia de Materiales de Sevilla CSIC, Sevilla, Spain, 41 092

    M. A. Aviles, J. M. Blanes & J. L. Perez-Rodriguez

Authors
  1. Ewa T. Stepkowska
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  2. M. A. Aviles
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  3. J. M. Blanes
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  4. J. L. Perez-Rodriguez
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Correspondence to J. L. Perez-Rodriguez.

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Stepkowska, E.T., Aviles, M.A., Blanes, J.M. et al. Gradual transformation of Ca(OH)2 into CaCO3 on cement hydration. J Therm Anal Calorim 87, 189–198 (2007). https://doi.org/10.1007/s10973-006-7840-7

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  • DOI: https://doi.org/10.1007/s10973-006-7840-7

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