Title:
Effect of D-gluconate on Nucleation and Growth of Synthetic Calcium Silicate Hydrate (C-S-H)
Author(s):
Jirawan Siramanont and Paul Bowen
Publication:
Symposium Paper
Volume:
329
Issue:
Appears on pages(s):
403-414
Keywords:
calcium silicate hydrate; D-gluconate; precipitation; morphology; agglomeration
DOI:
10.14359/51711230
Date:
9/26/2018
Abstract:
Calcium Silicate Hydrate (C-S-H) was synthesized with and without D-gluconate in controlled conditions and environment via a dropwise precipitation method. The presence of D-gluconate seems to affect the synthetic C-S-H precipitation. D-gluconate can adsorb on C-S-H and also complex with Ca2+ in solution. The C-S-H stoichiometry in the presence of D-gluconate is different to pure the synthetic C-S-H. The underlying structure of all samples characterized by FTIR and XRD are similar. With the ddition of D-gluconate the C-S-H showed higher weight losses (0.8-4.7%) than the pure synthetic C-S-H. Primary particles show a nanofoil-morphology with or without addition of D-Gluconate.. The D-gluconate modifies the agglomeration patterns, forming hollow square or cuboid aggregates. Higher concentrations of D-gluconate in synthetic C-S-H accentuate this square aggregate shape possibly because of a preferential adsorption onto the synthetic C-S-H basal plane.
Related References:
1. Scrivener, K., and Nonat, A., “Hydration of cementitious materials, present and future,” Cement and Concrete Research, V. 41, No. 7, 2011, pp. 651-665. doi: 10.1016/j.cemconres.2011.03.026
2. Juenger, M. C. G., and Siddiqui, R., “Recent advances in understanding the role of supplementary cementitious materials in concrete,” Cement and Concrete Research, V. 78, Part A, 2015, pp. 71–80.
3. Antoni, M.; Rossen, J.; and Scrivener, K., “Cement substitution by a combination of metakaolin and limestone,” Cement and Concrete Research, V. 42, No. 12, 2012, pp. 1579-1589. doi: 10.1016/j.cemconres.2012.09.006
4. Sabir, B. B.; Wild, S.; and Bai, J., “Metakaolin and calcined clays as pozzolans for concrete: a review,” Cement and Concrete Composites, V. 23, No. 6, 2001, pp. 441-454. doi: 10.1016/S0958-9465(00)00092-5
5. Nalet, C., and Nonat, A., “Retarding effectiveness of hexitols on the hydration of the silicate phases of cement: Interaction with the aluminate and sulfate phases,” Cement and Concrete Research, V. 90, 2016, pp. 137-143. doi: 10.1016/j.cemconres.2016.09.018
6. Nalet, C., and Nonal, A., “Effects of hexitols on the hydration of tricalcium silicate,” Cement and Concrete Research, V. 91, 2017, pp. 87-96. doi: 10.1016/j.cemconres.2016.11.004
7. Nalet, C., and Nonat, A., “Effects of functionality and stereochemistry of small organic molecules on the hydration of tricalcium silicate,” Cement and Concrete Research, V. 87, 2016, pp. 97-104. doi: 10.1016/j.cemconres.2016.06.002
8. Nalet, C., and Nonat, A., “Ionic complexation and adsorption of small organic molecules on calcium silicate hydrate: Relation with their retarding effect on the hydration of C3S,” Cement and Concrete Research, V. 89, 2016, pp. 97-108. doi: 10.1016/j.cemconres.2016.08.012
9. Marchon, D.; Juilland, P.; Gallucci, E.; Frunz, L.; and Flatt, R. J., “Molecular and submolecular scale effects of comb-copolymers on tri-calcium silicate reactivity: Toward molecular design,” Journal of the American Ceramic Society, V. 100, No. 3, 2017, pp. 817-841. doi: 10.1111/jace.14695
10. Kanchanason, V., and Plank, J., “Role of pH on the Structure, Composition and Morphology of C-S-H–PCE Nanocomposites and Their Effect on Early Strength Development of Portland Cement,” Cement and Concrete Research, V. 102, 2017, pp. 90-98. doi: 10.1016/j.cemconres.2017.09.002
11. Kumar, A.; Walder, B. J.; Kunhi Mohamed, A.; Hofstetter, A.; Srinivasan, B.; Rossini, A. J.; Scrivener, K.; Emsley, L.; and Bowen, P., “The Atomic-Level Structure of Cementitious Calcium Silicate Hydrate,” The Journal of Physical Chemistry C, V. 121, No. 32, 2017, pp. 17188-17196. doi: 10.1021/acs.jpcc.7b02439
12. Pallagi, A.; Csendes, Z.; Kutus, B.; Czeglédi, E.; Peintler, G.; Forgo, P.; Pálinkó, I.; and Sipos, P., “Multinuclear complex formation in aqueous solutions of Ca(II) and heptagluconate ions,” Dalton Transactions (Cambridge, England), V. 42, No. 23, 2013, pp. 8460-8467. doi: 10.1039/c3dt00099k
13. Grangeon, S.; Claret, F.; Roosz, C.; Sato, T.; Gaboreau, S.; and Linard, Y., “Gaboreau, and S., Linard, Y., “Structure of nanocrystalline calcium silicate hydrates: insights from X-ray diffraction, synchrotron X-ray absorption and nuclear magnetic resonance,” Journal of Applied Crystallography, V. 49, No. 3, 2016, pp. 771-783. doi: 10.1107/S1600576716003885
14. L’Hôpital, E.; Lothenbach, B.; Kulik, D. A.; and Scrivener, K., “Influence of calcium to silica ratio on aluminium uptake in calcium silicate hydrate,” Cement and Concrete Research, V. 85, 2016, pp. 111-121. doi: 10.1016/j.cemconres.2016.01.014
15. Kulik, D. A., “Improving the structural consistency of C-S-H solid solution thermodynamic models,” Cement and Concrete Research, V. 41, No. 5, 2011, pp. 477-495. doi: 10.1016/j.cemconres.2011.01.012