Shear-Compression Failure Envelopes for Clay Brick Lime Mortar Masonry Under Wet and Dry Conditions

D. V. Bompa, A. Y. Elghazouli

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

This study describes an experimental investigation into the fundamental mechanical properties of masonry incorporating fired-clay bricks and hydraulic lime mortars under ambient-dry and wet conditions, used in many historic structures. The investigation includes tests on cylindrical cores in compression, square panels in diagonal compression and triplets in shear. Apart from conventional measurements, the use of digital image correlation techniques enables a detailed assessment of the influence of moisture on the constitutive properties and on the response kinematics of the member, including behaviour characteristics of the brick-mortar interfaces, crack propagation in tension and confinement effects in compression. The tests results show that on average the uniaxial compressive strength of wet brick–mortar cylinders is about 15% lower than their dry counterparts, whilst the shear strength of wet triplets is about 20% lower than of those in dry conditions. The diagonal tension strength of wet panels depends largely on the mortar properties and is about 30% lower on average than that of the dry panels. Based on the test results, the material shear-compression strength envelopes for wet and dry masonry are evaluated and compared with existing assessment models.

Original languageEnglish
Title of host publicationProtection of Historical Constructions - Proceedings of PROHITECH 2021
EditorsIoannis Vayas, Federico M. Mazzolani
PublisherSpringer Science and Business Media Deutschland GmbH
Pages175-185
Number of pages11
ISBN (Print)9783030907877
DOIs
Publication statusPublished - Dec 2021
Event4th International Conference on Protection of Historical Constructions, PROHITECH 2021 - Athens, Greece
Duration: 25 Oct 202127 Oct 2021

Publication series

NameLecture Notes in Civil Engineering
Volume209 LNCE
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference4th International Conference on Protection of Historical Constructions, PROHITECH 2021
Country/TerritoryGreece
CityAthens
Period25/10/2127/10/21

Keywords

  • Clay bricks
  • Compression
  • Diagonal tension
  • Lime mortar
  • Shear response

ASJC Scopus subject areas

  • Civil and Structural Engineering

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