The Dependence of the Aggregate Stability to Concrete of Modifying Additives Based on Halloysite Nanotubes in Water Environment on the Character of the Stabilizer

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The stabilizer nature effect on the aggregative stability of the modifying concrete additives based on halloysite nanotubes in the aquatic environment is shown. The chemical composition and morphology of halloysite nanotubes and their additives, obtained by ultrasonic dispersion in the aquatic environment of the surfactant, are studied. The influence on the processes of charge stabilization on the outer and inner surface of halloysite nanotubes is determined. The dependence of nanotube sizes and specific surface area on the stabilizer type, the time of ultrasonic dispersion, and additive storage is revealed. The stabilization mechanisms of aqueous dispersions of modifying additives based on halloysite nanotubes with anion-and cation-active substances are considered. It is established that the polynaphthalenesulfonate-based modifier S-3 has got the maximum efficiency as a stabilizer of aqueous dispersions of modifying concrete additives with halloysite nanotubes.

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Edited by:

Dr. Denis Solovev

Pages:

287-292

Citation:

N.P. Lukutsova et al., "The Dependence of the Aggregate Stability to Concrete of Modifying Additives Based on Halloysite Nanotubes in Water Environment on the Character of the Stabilizer", Materials Science Forum, Vol. 945, pp. 287-292, 2019

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February 2019

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