Publication detail

Pilot Study of Mechanical Waves Passing Through Fine-Grained Cement Composite during the Early Hydration Process

HODULÁKOVÁ, M. TOPOLÁŘ, L. KUCHARCZYKOVÁ, B.

Original Title

Pilot Study of Mechanical Waves Passing Through Fine-Grained Cement Composite during the Early Hydration Process

Type

conference paper

Language

English

Original Abstract

The aim of this paper is to present results of an experimental analysis focused on the mechanical waves passing through fine-grained materials, prepared from the CEM I 52.5 R Portland cement and the water coefficient w/c = 0.40, during the setting and hardening phase. In the experiment differences in the wave propagation in cement pastes and mortars were investigated. After mixing, both materials were poured into a cylindrical mould with the diameter of 75.0 ± 0.3 mm. These test specimens were then used to observe, in particular, the development of the amplitude of mechanical waves using a measuring setup which was composed for this purpose from the equipment of the Brno University of Technology. The results show that the time of „critical changes" in the internal structure of the material can be determined. These changes are related to the quality of the bonds of the particles in the internal structure which are reflected in the propagation of the mechanical waves within the material. It is also expected that the experimental analysis will help extend the knowledge of mechanical waves propagation in cement-based composite materials during setting.

Keywords

cement paste; cement mortar; hydration heat; signal amplitude; mechanical waves;

Authors

HODULÁKOVÁ, M.; TOPOLÁŘ, L.; KUCHARCZYKOVÁ, B.

Released

3. 6. 2020

Publisher

Trans Tech Publications Ltd.

Location

Switzerland

ISBN

978-3-0357-1605-4

Book

8th International Conference on Engineering and Innovative Materials

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Year of study

846

State

Swiss Confederation

Pages from

243

Pages to

247

Pages count

5

URL

https://www.scientific.net/KEM.846.243.pdf

BibTex

@inproceedings{BUT164011,
  author="Michaela {Hoduláková} and Libor {Topolář} and Barbara {Kucharczyková}",
  title="Pilot Study of Mechanical Waves Passing Through Fine-Grained Cement Composite during the Early Hydration Process",
  booktitle="8th International Conference on Engineering and Innovative Materials",
  year="2020",
  journal="Key Engineering Materials (print)",
  volume="846",
  pages="243--247",
  publisher="Trans Tech Publications Ltd.",
  address="Switzerland",
  doi="10.4028/www.scientific.net/KEM.846.243",
  isbn="978-3-0357-1605-4",
  issn="1013-9826",
  url="https://www.scientific.net/KEM.846.243.pdf"
}