Traditional architecture in extreme climates of Chile. Methodology for analysis, assessment and intervention

Hurtado, Marcela; Hormazábal, Nina

doi:10.1201/9781315616995-114

Structural Analysis of Historical Constructions: Anamnesis, Diagnosis, Therapy, Controls 2016

DOI: 10.1201/9781315616995-114

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Traditional architecture in extreme climates of Chile. Methodology for analysis, assessment and intervention

Marcela Hurtado¹,

Nina Hormazábal²

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2017

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Torque Penetrometric Test for the in-situ characterisation of historical mortars: fracture mechanics interpretation and experimental validation

Marastoni

Benedetti

Pelà

et al. 2017

Construction and Building Materials

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The assessment of historical structures requires appropriate knowledge of the behaviour of the investigated materials. Concerning masonry, its mechanical characterisation is a challenging task, since its composite nature requires the careful evaluation of the behaviour of its material components. In particular, the experimental assessment of the strength of existing mortar in historical structures still encounters several difficulties. This study investigates a novel Minor Destructive Testing (MDT) technique virtually equivalent to the vane test used for soils. The instrumentation, called herein Torque Penetrometric Test (TPT), is composed of a steel nail with four protruding teeth and a torque wrench. The test consists in inserting the toothed nail into a mortar joint and then applying a torque by means of a dynamometric key, until reaching the failure of the material. This work presents a novel interpretation theory based on basic concepts of fracture mechanics and applied to the micro-mechanical analysis of the stress state induced by the instrument on the investigated mortar. The proposed interpretative theory is validated through the execution of experimental tests in the laboratory and in a historical masonry building. The test proves to be effective for a quick in-situ MDT evaluation of the strength of existing mortars.Peer ReviewedPostprint (author's final draft

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Torque Penetrometric Test for the in-situ characterisation of historical mortars: fracture mechanics interpretation and experimental validation

Marastoni

Benedetti

Pelà

et al. 2017

Construction and Building Materials

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show abstract

Determination of the Mortar Strength Using Double Punch Testing

Matysek

Seręga

Kańka

2017

Procedia Engineering

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Combined In-Situ and Laboratory Minor Destructive Testing of Historical Mortars

Pelà

Roca

Aprile

2017

International Journal of Architectural Heritage

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Mortar is of all masonry components the most difficult to be experimentally characterised in heritage buildings. This paper investigates the possibility of combining different in-situ and laboratory minor destructive testing (MDT) techniques to assess the strength of mortar in historical brickwork. Lime mortar and clay brick walls were built in the laboratory and then tested in order to derive empirical correlation rules among three different MDT techniques: double punch test (DPT), helix pull-out test (HPT) and pin penetration test (PPT). The outcomes of this activity were used eventually to assess the mortar properties of an important historical heritage structure, Casa Puig i Cadafalch, located near Barcelona. The research is intended to promote the use of MDT in studies and conservation works on built cultural heritage by providing criteria for the evaluation of the strength of existing mortar with respectful sampling and testing techniques.

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Traditional architecture in extreme climates of Chile. Methodology for analysis, assessment and intervention

Cited by 3 publications

References 0 publications

Torque Penetrometric Test for the in-situ characterisation of historical mortars: fracture mechanics interpretation and experimental validation

Torque Penetrometric Test for the in-situ characterisation of historical mortars: fracture mechanics interpretation and experimental validation

Determination of the Mortar Strength Using Double Punch Testing

Combined In-Situ and Laboratory Minor Destructive Testing of Historical Mortars

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