Publication result detail

Effect of natural lightweight aggregate on fresh state properties of lime mortars

ŽIŽLAVSKÝ, T.; VYŠVAŘIL, M.

Original Title

Effect of natural lightweight aggregate on fresh state properties of lime mortars

English Title

Effect of natural lightweight aggregate on fresh state properties of lime mortars

Type

Paper in proceedings (conference paper)

Original Abstract

Paper studies fresh state and rheological properties of lightweight mortars prepared with constant workability using natural lightweight aggregates, and hydrated or natural hydraulic lime as binder. Fresh state properties are studied by standardised tests and rheological characteristics are obtained utilizing hybrid rheometer. Density of fresh mortar decreased accordingly to the loose bulk densities of aggregates used, while the water retention value remained very high with minor variations. The air content in fresh mortar with pumice as an aggregate was surprisingly high, which may be caused by the open porosity of the aggregate in combination with the test design. The influence of the aggregate weight on the rheological properties was most apparent in the case of hysteresis loop size and mortar stability, where lightweight aggregate with exception of zeolite showed higher loss tangent and lower critical strain, thus shorter linear viscoelastic region.

English abstract

Paper studies fresh state and rheological properties of lightweight mortars prepared with constant workability using natural lightweight aggregates, and hydrated or natural hydraulic lime as binder. Fresh state properties are studied by standardised tests and rheological characteristics are obtained utilizing hybrid rheometer. Density of fresh mortar decreased accordingly to the loose bulk densities of aggregates used, while the water retention value remained very high with minor variations. The air content in fresh mortar with pumice as an aggregate was surprisingly high, which may be caused by the open porosity of the aggregate in combination with the test design. The influence of the aggregate weight on the rheological properties was most apparent in the case of hysteresis loop size and mortar stability, where lightweight aggregate with exception of zeolite showed higher loss tangent and lower critical strain, thus shorter linear viscoelastic region.

Keywords

lightweight aggregate; zeolite; lava; pumice; NHL; rheology; water retention; air content; flow properties; viscoelastic properties

Key words in English

lightweight aggregate; zeolite; lava; pumice; NHL; rheology; water retention; air content; flow properties; viscoelastic properties

Authors

ŽIŽLAVSKÝ, T.; VYŠVAŘIL, M.

RIV year

2021

Released

08.02.2021

Publisher

American Institute of Physics

Location

Melville, NY, USA

ISBN

978-0-7354-4066-1

Book

SPECIAL CONCRETE AND COMPOSITES 2020: 17th International Conference

ISBN

1551-7616

Periodical

AIP conference proceedings

Volume

2021

Number

2322

State

United States of America

Pages from

1

Pages to

6

Pages count

6

URL

https://aip.scitation.org/doi/abs/10.1063/5.0041828

BibTex

@inproceedings{BUT169328,
  author="Tomáš {Žižlavský} and Martin {Vyšvařil}",
  title="Effect of natural lightweight aggregate on fresh state properties of lime mortars",
  booktitle="SPECIAL CONCRETE AND COMPOSITES 2020: 17th International Conference",
  year="2021",
  journal="AIP conference proceedings",
  volume="2021",
  number="2322",
  pages="1--6",
  publisher="American Institute of Physics",
  address="Melville, NY, USA",
  doi="10.1063/5.0041828",
  isbn="978-0-7354-4066-1",
  issn="0094-243X",
  url="https://aip.scitation.org/doi/abs/10.1063/5.0041828"
}