Characterization of pozzolanic lime mortars used as filling material in shaped grooves for restoring member connections in ancient monuments

Konstantinos N. Kaklis, Stelios P. Maurigiannakis, Zacharias G. Agioutantis, Pagona Maravelaki-Kalaitzaki

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

This article presents a set of mechanical characteristics for a pozzolanic mortar consisting of hydrated lime and metakaolin, which is used as filler between metallic connectors and marble blocks during restoration activities of ancient monuments in Greece. Mechanical properties include the uniaxial and triaxial compressive strength, the indirect tensile strength, the bending strength, the elastic modulus and Poisson’s ratio, and a shear failure criterion. Cored cylindrical specimens are used for determining the uniaxial and triaxial compressive behavior and the indirect tensile strength of the mortar, thus ensuring the repeatability of the experimental results. The triaxial tests indicated a plastic behavior of the mortars under study, enabling them to perform well in conditions of high shear forces. Calcite and hydraulic components formed in the setting procedure contributed to the plasticity of the final mortar. The mechanical properties that were developed can be utilized to model material behavior and failure under conditions of confined or triaxial loading. The development of a shear failure criterion for a pozzolanic mortar is a substantial accomplishment that has not been previously reported in the international literature.

Original languageEnglish
Pages (from-to)75-90
Number of pages16
JournalInternational Journal of Architectural Heritage
Volume12
Issue number1
DOIs
StatePublished - Jan 2 2018

Bibliographical note

Publisher Copyright:
© 2017 Taylor & Francis.

Keywords

  • indirect tensile strength
  • pozzolanic mortars
  • shear strength
  • triaxial compressive strength
  • uniaxial compressive strength

ASJC Scopus subject areas

  • Conservation
  • Architecture
  • Visual Arts and Performing Arts

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