Abstract

This paper reports on the influence of carbon nanotubes (CNTs) surface functionalization on structure and composition of cementitious phase. Phase composition was determined by X-Ray analysis according to the Rietveld method. It was found that the presence of oxygen-containing functional groups on CNTs surface’ leads to intensification of the hydration process and an increase in concentration of C-S-H gel from 65.9 to 74.4 %. Based on the experimental results the hypothesis of formation of cement composite structure for different CNTs’ surface functionalizations is described.

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