Publication detail

Reactivity of natural pozzolans in lime mortars

VYŠVAŘIL, M. ŽIŽLAVSKÝ, T. KREBS, M. DVOŘÁK, K.

Original Title

Reactivity of natural pozzolans in lime mortars

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

Today, lime-pozzolan mortars are being used in the repair of historic buildings, replacing the lime-cement mortars that were previously used in this practice, but were incompatible with historic mortars. In this paper, the pozzolanic reactivity of seven different natural finely ground thermally untreated pozzolans (trass, pozzolanic earth, chalcedonite, pumice, zeolite, spongilite and lava) in lime mortars is investigated. All lime-pozzolan mortars achieved higher strengths than the reference lime mortar, especially after 90 and 180 days. Surprisingly, no clear correlation was observed between the pozzolanic activity of the natural pozzolans, determined by the Chapelle test, and the strength of the mortars. In order to successfully assess the reactivity of a pozzolan, it is not sufficient to determine just the pozzolanic activity, but it is also necessary to know its mineralogical composition and the chemical composition of the amorphous phases in detail and simulate the practical use of the lime-pozzolan mortar.

Keywords

amorphous phase; lime mortar; mineralogical composition; natural pozzolan; pozzolanic activity; strength

Authors

VYŠVAŘIL, M.; ŽIŽLAVSKÝ, T.; KREBS, M.; DVOŘÁK, K.

Released

28. 12. 2023

Publisher

Department of Civil Engineering and Geodesy, Faculty of Technical Sciences, Novi Sad

Location

Novi Sad

ISBN

978-86-6022-615-2

Book

Proeedings / 16th International Scientific Conference „Integration, Novelty, Design, Interdisciplinarity, Sustainability" iNDiS 2023

Pages from

621

Pages to

629

Pages count

9

BibTex

@inproceedings{BUT187225,
  author="Martin {Vyšvařil} and Tomáš {Žižlavský} and Martin {Krebs} and Karel {Dvořák}",
  title="Reactivity of natural pozzolans in lime mortars",
  booktitle="Proeedings / 16th International Scientific Conference „Integration, Novelty, Design, Interdisciplinarity, Sustainability{"} iNDiS 2023",
  year="2023",
  pages="621--629",
  publisher="Department of Civil Engineering and Geodesy, Faculty of Technical Sciences, Novi Sad",
  address="Novi Sad",
  isbn="978-86-6022-615-2"
}