Publication detail

Surface Treatment of Cementitious Systems by Silicates

ILIUSHCHENKO, V. KALINA, L. HRUBÝ, P. ŠOUKAL, F. OPRAVIL, T.

Original Title

Surface Treatment of Cementitious Systems by Silicates

Type

abstract

Language

English

Original Abstract

The efficiency of the silicate-based surface treatment agents, other words sealers, have been widely investigated over the past decades. The surface treatment utilization protects the cementitious system against the penetration of undesirable substances. Another purpose of sealers application is to reduce the risk of deterioration of cement structures that leads to increasing their durability. Nevertheless, understanding of the several aspects concerning the silicate-based sealers is not entirely clear. This study deals with the action mechanism of selected silicates such as potassium, sodium, lithium water glasses and colloidal silica with the cementitious surface. Effectiveness of used sealers in terms of water absorption, hydration mechanism, same as the effect on the microstructure of the cement substrate was studied and evaluated with the contribution of following techniques – rheometry, mercury porosimetry, isothermal calorimetry, X ray diffractometry and scanning electron microscopy. Silicate based treatment agents were assessed on two sets of specimens; fresh cement pastes (at the age of 1 hour) and on the hydrated ones (24 hrs.), respectively. As result, certain effectiveness of the used sealers was verified. Film-forming sealers have shown higher effectiveness in case of their usage on the hydrated cementitious surfaces (24 hrs.). Thus, the dependence of sealers efficiency on the substrate hydration progress was confirmed.

Keywords

Concrete sealers, treatment agents, calcium silicate hydrate, microstructure

Authors

ILIUSHCHENKO, V.; KALINA, L.; HRUBÝ, P.; ŠOUKAL, F.; OPRAVIL, T.

Released

27. 11. 2020

Publisher

Vysoké učení technické v Brně, Fakulta chemická, Purkyňova 464/118, 612 00 Brno

Location

Brno

ISBN

978-80-214-5920-0

Book

Studentská odborná konference - CHEMIE JE ŽIVOT - sborník abstraktů

Edition number

první

Pages from

79

Pages to

80

Pages count

2

URL

https://www.fch.vut.cz/vav/konference/sok/vystupy/sbornik-abstrakty-konference-2020-pdf-p198641

BibTex

@misc{BUT169258,
  author="Valeriia {Hrubá} and Lukáš {Kalina} and Petr {Hrubý} and František {Šoukal} and Tomáš {Opravil}",
  title="Surface Treatment of Cementitious Systems by Silicates",
  booktitle="Studentská odborná konference - CHEMIE JE ŽIVOT - sborník abstraktů",
  year="2020",
  edition="první",
  pages="79--80",
  publisher="Vysoké učení technické v Brně, Fakulta chemická, Purkyňova 464/118, 612 00 Brno",
  address="Brno",
  isbn="978-80-214-5920-0",
  url="https://www.fch.vut.cz/vav/konference/sok/vystupy/sbornik-abstrakty-konference-2020-pdf-p198641",
  note="abstract"
}