Publication detail

Properties of Aerial Lime-Based Mortars with Chitosan Ethers

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

Original Title

Properties of Aerial Lime-Based Mortars with Chitosan Ethers

Type

conference paper

Language

English

Original Abstract

This paper studies the possibility of usage of chitosan derivatives (hydroxypropyl chitosan (HPCH) and carboxymethyl chitosan (CMCH)) as admixtures for aerial lime-based mortars. The physical-mechanical properties were studied on the specimens prepared with constant water/binder ratio and binder/aggregate ratio 1:3 by weight using siliceous sand with the grain size up to 4 mm and doses of admixture ranging between 0.5 and 10‰. The properties were studied on the specimens up to 365 days. The addition of admixtures improves workability of mortar, but in the early stages also decreases strengths of mortars, especially the compressive strength. The addition of HPCH significantly reduces the bulk densities of specimens, while CMCH decreases them just slightly. With the increasing amount of time, the difference in strengths between reference and tested mortars decreases, reaching the similar values after 90 days of curing time. The further ageing causes additional growth of strengths with a significantly higher increase in the case of CMCH.

Keywords

lime mortar, chitosan ethers, strength, carbonation, water absorption, porosity

Authors

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

Released

20. 6. 2018

ISBN

978-3-0357-1348-0

Book

Binders, Materials and Technologies in Modern Constructions IV

ISBN

1662-9779

Periodical

Solid State Phenomena

Number

276

State

Swiss Confederation

Pages from

75

Pages to

82

Pages count

8

BibTex

@inproceedings{BUT148519,
  author="Tomáš {Žižlavský} and Martin {Vyšvařil} and Patrik {Bayer} and Pavla {Rovnaníková}",
  title="Properties of Aerial Lime-Based Mortars with Chitosan Ethers",
  booktitle="Binders, Materials and Technologies in Modern Constructions IV",
  year="2018",
  journal="Solid State Phenomena",
  number="276",
  pages="75--82",
  doi="10.4028/www.scientific.net/SSP.276.75",
  isbn="978-3-0357-1348-0",
  issn="1662-9779"
}