Publication detail

Rheological and mechanical properties of lime-brick powder mortars with expanded clay aggregate

VYŠVAŘIL, M. ŽIŽLAVSKÝ, T. ROVNANÍKOVÁ, P.

Original Title

Rheological and mechanical properties of lime-brick powder mortars with expanded clay aggregate

Type

conference paper

Language

English

Original Abstract

The rheological behaviour and mechanical properties of lightweight lime-brick powder mortars with combined expanded clay-sand aggregates are presented in this paper. The rheological investigation included the characterization of flow properties and viscoelastic properties of the fresh mortars. Flexural and compressive strengths were determined at 7 and 28 days. These mortars are Non-Newtonian thixotropic liquids with conversion from shearthickening to shear-thinning behaviour depending on expanded clay aggregate (ECA) content. Yield stress and consistency coefficient of mortars significantly increase with decreasing amount of ECA; the mortars become more rigid and more viscous. Some of the mortars reached higher flexural strengths than similar lime mortars with metakaolin and higher compressive strengths than pure lime mortars. The lightweight lime-brick powder mortar with the mass ratio of 1:1 between gravelous sand and ECA was identified as the best among the analyzed mortars.

Keywords

lightweight lime mortar; brick powder; expanded clay; rheology; flexural strength; commpresive strength

Authors

VYŠVAŘIL, M.; ŽIŽLAVSKÝ, T.; ROVNANÍKOVÁ, P.

Released

16. 7. 2018

Publisher

IOP Publishing

ISBN

1757-8981

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

385

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

6

Pages count

6

URL

http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012063

Full text in the Digital Library

http://hdl.handle.net/11012/137118

BibTex

@inproceedings{BUT148920,
  author="Martin {Vyšvařil} and Tomáš {Žižlavský} and Pavla {Rovnaníková}",
  title="Rheological and mechanical properties of lime-brick powder mortars with expanded clay aggregate",
  booktitle="Construmat 2018",
  year="2018",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="385",
  number="1",
  pages="1--6",
  publisher="IOP Publishing",
  doi="10.1088/1757-899X/385/1/012063",
  issn="1757-8981",
  url="http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012063"
}