Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

High Thermopower with Metallic Conductivity in p/p}-Type Li-Substituted PbPdO2

Published

Author(s)

Leo K. Lamontagne, Geneva Laurita, Michael W. Gaultois, Michael Knight, Leila Ghadbeigi, Taylor D. Sparks, Markus E. Gruner, Craig Brown, Ram Seshadri

Abstract

Early age hydration kinetics of Portland cement with pozzolanic volcanic ash was examined using quasi-elastic neutron scattering. Volcanic ash consisting of two different particle sizes was used to prepare cement pastes by combinations of Portland cement and volcanic ash. Concentration of the volcanic ash played a major role in influencing the bound water index and self-diffusion coefficients of hydration by allowing more free and mobile water in the gel pores, suggesting that volcanic ash may not have completely been involved in the hydration process. This study shows that the particle size along with variation in volcanic ash composition governs the early age hydration process in volcanic ash cements.
Citation
Chemistry of Materials
Volume
28

Keywords

water dynamics, neutron scattering, cement

Citation

Lamontagne, L. , Laurita, G. , Gaultois, M. , Knight, M. , Ghadbeigi, L. , Sparks, T. , Gruner, M. , Brown, C. and Seshadri, R. (2016), High Thermopower with Metallic Conductivity in p{/p}-Type Li-Substituted PbPdO<sub>2</sub>, Chemistry of Materials, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=919607 (Accessed June 20, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created May 8, 2016, Updated October 12, 2021