Hostname: page-component-76fb5796d-x4r87 Total loading time: 0 Render date: 2024-04-28T21:28:28.527Z Has data issue: false hasContentIssue false
  • English
  • Français

States of water in hydrated C3S (tricalcium silicate) as a function of relative humidity

Published online by Cambridge University Press:  03 March 2011

Norbert M. Nemes ,
Dan A. Neumann  and
Richard A. Livingston
Norbert M. Nemes
Affiliation:
Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742; and NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8562
Dan A. Neumann*
Affiliation:
NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8562
Richard A. Livingston
Affiliation:
Office of Infrastructure R&D, Federal Highway Administration, McLean, Virginia 22101
*
a) Address all correspondence to this author. e-mail: dan@nist.gov
Get access

Abstract

Quasi-elastic neutron spectroscopy was used to study the changes in the water content of hydrated tricalcium silicate cement paste with decreasing relative humidity (RH). The structurally bound water was divided into water bound in Ca(OH)2 and in calcium-silicate hydrate, or C–S–H-gel, utilizing the inelastic vibrational modes of Ca(OH)2. The quasi-elastic line was analyzed in terms of free and constrained water, and both were observed to decrease as the pores empty of pore-water with drying. An inelastic line related to translational vibrations of immobile water molecules was also extracted from the spectra, and its intensity was found to decrease with lower RH.

Keywords

Neutron scattering
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 10 , October 2006 , pp. 2516 - 2523
Copyright
Copyright © Materials Research Society 2006

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Thomas, J.J., Jennings, H., Allen, A.: The surface area of hardened cement paste as measured by various techniques. Concr. Sci. Eng. 1, 45 (1999).Google Scholar
2.Rarick, R.L., Bhatty, J.I., Jennings, H.M. Surface area measurement using gas sorption: Application to cement paste, in Materials Science of Concrete IV, edited by Skalny, J. and Mindess, S.American Ceramic Society, Westerwille, OH, 1995), pp. 1–39.Google Scholar
3.Brunauer, S., Kantro, D.L., Copeland, L.E.: The stoichiometry of the hydration of beta-dicalcium silicate and tricalcium silicate at room temperature. J. Am. Chem. Soc. 80, 761 (1958).CrossRefGoogle Scholar
4.Powers, T.C., Brownyard, T.L.: Studies of the physical properties of hardened portland cement paste: Part 2. Studies of water fixation. J. Am. Concr. Inst. 43, 249 (1947).Google Scholar
5.Brouwers, H.J.H.: The work of Powers and Brownyard revisited: Part I. Cem. Concr. Res. 34, 1697 (2004).CrossRefGoogle Scholar
6.Taylor, H.F.W.: Cement Chemistry (Academic Press, London, UK, 1990).Google Scholar
7.Mindess, S., Young, J.F.: Concrete (Prentice-Hall, Englewood Cliffs, NJ, 1981).Google Scholar
8.Berliner, R., Popovici, M., Herwig, K.V., Jennings, H.M., Thomas, J.J.: Quasielastic neutron scattering study of the effect of water-to-cement ratio on the hydration kinetics of tricalcium silicate. Physica B (Amsterdam) 241, 1237 (1997).CrossRefGoogle Scholar
9.Berliner, R., Popovici, M., Herwig, K.V., Berliner, M., Jennings, H.M., Thomas, J.J.: Quasielastic neutron scattering study of the effect of water-to-cement ratio on the hydration kinetics of tricalcium silicate. Cem. Concr. Res. 28, 231 (1998).CrossRefGoogle Scholar
10.FitzGerald, S., Neumann, D.A., Rush, J.J., Bentz, D., Livingston, R.: In situ quasi-elastic neutron scattering study of the hydration of tricalcium silicate. Chem. Mater. 10, 397 (1998).CrossRefGoogle Scholar
11.FitzGerald, S.A., Thomas, J.J., Neumann, D.A., Livingston, R.A.: A neutron scattering study of the role of diffusion in the hydration of tricalcium silicate. Cem. Concr. Res. 32, 409 (2002).CrossRefGoogle Scholar
12.Thomas, J.J., FitzGerald, S.A., Neumann, D.A., Livingston, R.A.: State of water in hydrating tricalcium silicate and portland cement pastes as measured by quasi-elastic neutron scattering. J. Am. Ceram. Soc. 84, 1811 (2001).CrossRefGoogle Scholar
13.Peterson, V.K., Neumann, D.A., Livingston, R.A.: Hydration of tricalcium and dicalcium silicate mixtures studied using quasielastic neutron scattering. J. Phys. Chem. B 109, 14449 (2005).CrossRefGoogle ScholarPubMed
14.Peterson, V.K., Neumann, D.A., Livingston, R.A.: Hydration of cement: The application of quasielastic and inelastic neutron scattering. Physica B (Amsterdam) (in press).Google Scholar
15.Fratini, E., Chen, S.H., Baglioni, P., Bellissent-Funel, M-C.: Age-dependent dynamics of water in hydrated cement paste. Phys. Rev. E 64, 020201 (2001).CrossRefGoogle ScholarPubMed
16.Fratini, E., Chen, S.H., Baglioni, P., Bellissent-Funel, M-C.: Quasi-elastic neutron scattering study of translational dynamics of hydration water in tricalcium silicate. J. Phys. Chem. B 106, 158 (2002).CrossRefGoogle Scholar
17.Faraone, A., Chen, S.H., Fratini, E., Baglioni, P., Liu, L., Brown, C.M.: Rotational dynamics of hydration water in dicalcium silicate by quasielastic neutron scattering. Phys. Rev. E 65, 040501 (2002).CrossRefGoogle ScholarPubMed
18.Baglioni, P., Fratini, E., Chen, S.H.Glassy dynamics of water in hydrated cement paste. Appl. Phys. A Mater. Sci. Proc. 74, S1178 (2002).CrossRefGoogle Scholar
19.Lide, D.R. CRC HBD Chem. Physics (2002).Google Scholar
20.Copley, J.R.D., Udovic, T.J.: Neutron time-of-flight spectroscopy. J. Res. NIST 98, 71 (1993).CrossRefGoogle ScholarPubMed
21.FitzGerald, S.A., Neumann, D.A., Rush, J.J., Kirkpatrick, R.J., Cong, X., Livingston, R.A.: Inelastic neutron scattering study of the hydration of tricalcium silicate. J. Mater. Res. 14, 1160 (1999).CrossRefGoogle Scholar
22.Teixeira, J., Bellissent-Funnel, M-C., Chen, S.H., Dianoux, A.J.: Experimental-determination of the nature of diffusive motions of water-molecules at low-temperatures. Phys. Rev. A 31, 1913 (1985).CrossRefGoogle ScholarPubMed
23.Chen, J.J., Thomas, J.J., Taylor, H.F.W., Jennings, H.M.: Solubility and structure of calcium silicate hydrate. Cem. Concr. Res. 34, 1499 (2004).CrossRefGoogle Scholar
24.Thomas, J.J., Chen, J.J., Allen, A., Jennings, H.: Effects of decalcification on the microstructure and surface area of cement and tricalcium silicate pastes. Cem. Concr. Res. 34, 2297 (2004).CrossRefGoogle Scholar
25.Thomas, J.J., Chen, J.J., Jennings, H.M., Neumann, D.A.: Ca–OH bonding in the C–S–H gel phase of tricalcium silicate and white portland cement pastes measured by inelastic neutron scattering. Chem. Mater. 15, 3813 (2003).CrossRefGoogle Scholar
26.Olson, R.A., Jennings, H.M.: Estimation of C–S–H content in a blended cement paste using water adsorption. Cem. Concr. Res. 31, 351 (2001).CrossRefGoogle Scholar
27.Jennings, H.M.: Colloid model of C–S–H and implications to the problem of creep and shrinkage. Mater. Struct. 37, 59 (2004).CrossRefGoogle Scholar