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Effective Fine Concrete Modified with a Highly Dispersed Wollastonite-Based Additive

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Abstract:

An effective highly dispersed additive based on the wollastonite Miwoll 05-97 with an average particle diameter of 6.5 microns is obtained. A stable effect of interacting the additive components with Portland slag cement CEM II/A–Ш 42.5H is revealed; it results in improving the strength of fine-grained concrete produced with the raw materials mentioned above. It is established that using water suspension of wollastonite solid particles, highly water-reducing/superplasticizing modifier based on the polycarboxylate ether Master Glenium 430, as a stabilizer of the surface-active substance allows producing an additive with an evener distribution of solid particles in the liquid, and with stable functional properties. A highly dispersed wollastonite-based additive, obtained by ultrasonic dispersion for 10 minutes in the bath-type activator at the frequency of 35 kHz in the aquatic environment with a suspension stabilizer, enables producing the wollastonite-modified fine concrete with a compressive strength of more than 50 MPa, with the 10% additive being 2 times higher than that of the control.

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Periodical:

Key Engineering Materials (Volume 887)

Pages:

422-427

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.887.422

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Online since:

May 2021

Authors:

E.G. Karpikov*, N.P. Lukutsova, T.P. Blagoder, E.A. Bondarenko

Keywords:

Fine-Grained Concrete, Highly Dispersed Additive, Stabilizer, Strength, Wollastonite

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© 2021 Trans Tech Publications Ltd. All Rights Reserved

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