Experimental validation for the application of the flat jack test in cob walls

A. Jiménez Rios; Dermot O'Dwyer

doi:10.1016/j.conbuildmat.2020.119148

Experimental validation for the application of the flat jack test in cob walls

A. Jiménez Rios, Dermot O'Dwyer

Department of Architecture & Civil Engineering

Trinity College Dublin

Research output: Contribution to journal › Article › peer-review

18 Citations (SciVal)

Abstract

The flat jack test is one of the most applied investigation techniques in the field of cultural heritage conservation. The purpose of the experimental campaign presented in this paper was to assess the feasibility of the technique to measure the average compressive levels of stress in existing cob walls and determine their mechanical properties. It was observed that the single flat jack test tended to overestimate the average value of stress by a factor of two. Therefore, it is advised to apply a value of Ke=0.51 to correct the average compressive stress values obtained with the use of this technique.

Original language	English
Journal	Construction and Building Materials
Volume	254
DOIs	https://doi.org/10.1016/j.conbuildmat.2020.119148
Publication status	Published - 10 Sept 2020

Keywords

Cob
Minor Destructive Tests (MDT)
Single flat jack
Double flat jack
Mechanical properties
Dimensionless geometrical efficiency constant

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10.1016/j.conbuildmat.2020.119148

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title = "Experimental validation for the application of the flat jack test in cob walls",

abstract = "The flat jack test is one of the most applied investigation techniques in the field of cultural heritage conservation. The purpose of the experimental campaign presented in this paper was to assess the feasibility of the technique to measure the average compressive levels of stress in existing cob walls and determine their mechanical properties. It was observed that the single flat jack test tended to overestimate the average value of stress by a factor of two. Therefore, it is advised to apply a value of Ke=0.51 to correct the average compressive stress values obtained with the use of this technique.",

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AB - The flat jack test is one of the most applied investigation techniques in the field of cultural heritage conservation. The purpose of the experimental campaign presented in this paper was to assess the feasibility of the technique to measure the average compressive levels of stress in existing cob walls and determine their mechanical properties. It was observed that the single flat jack test tended to overestimate the average value of stress by a factor of two. Therefore, it is advised to apply a value of Ke=0.51 to correct the average compressive stress values obtained with the use of this technique.

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KW - Minor Destructive Tests (MDT)

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KW - Double flat jack

KW - Mechanical properties

KW - Dimensionless geometrical efficiency constant

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JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Experimental validation for the application of the flat jack test in cob walls

Abstract

Keywords

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