A 43Ca and 13C NMR study of the chemical interaction between poly(ethylene-vinyl acetate) and white cement during hydration

Jennifer L MacDonald; Ulrike Werner-Zwanziger; Banghao Chen; Josef W Zwanziger; Dean Forgeron

doi:10.1016/j.ssnmr.2011.07.001

A 43Ca and 13C NMR study of the chemical interaction between poly(ethylene-vinyl acetate) and white cement during hydration

Solid State Nucl Magn Reson. 2011 Sep;40(2):78-83. doi: 10.1016/j.ssnmr.2011.07.001. Epub 2011 Jul 23.

Authors

Jennifer L MacDonald¹, Ulrike Werner-Zwanziger, Banghao Chen, Josef W Zwanziger, Dean Forgeron

Affiliation

¹ Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada.

PMID: 21813268
DOI: 10.1016/j.ssnmr.2011.07.001

Abstract

(43)Ca and (13)C NMR methods were used to study the chemical interaction of poly(ethylene-vinyl acetate) (PEVAc) admixture in commercial-grade white cement. From (43)Ca NMR it is shown both that PEVAc induces modest changes in the hydrated cement structure, and that hydrated commercial cement is significantly more complex than models that have been used for its structure in past work. The (13)C NMR results show that the PEVAc hydrolysis occurs early in the cement hydration acceleration period, with a rate well-fit by an exponential decay using a time constant of 6±1 days.

Publication types

Research Support, Non-U.S. Gov't