Cit:Hassine.etal:2017

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Author Hassine, Mohamed Ahmed; Beck, Kévin; Brunetaud, Xavier; Al-Mukhtar, Muzahim
Year 2017
Title Local strain measurements during water imbibition in tuffeau polluted by gypsum
Bibtex @inproceedings {Hassine.etal:2017,

title = {Local strain measurements during water imbibition in tuffeau polluted by gypsum}, booktitle = {Proceedings of SWBSS 2017. Fourth International Conference on Salt Weathering of Buildings and Stone Sculptures, University of Applied Sciences Potsdam, Germany, 20-22 September 2017}, year = {2017}, editor = {Laue, Steffen}, pages = {74-80}, month = {september}, organization = {Fachhochschule Potsdam}, publisher = {Verlag der Fachhochschule Potsdam}, note = {fulltext, conference paper}, key = {SWBSS2017}, doi = {10.5165/hawk-hhg/323}, author = {Hassine, Mohamed Ahmed; Beck, Kévin; Brunetaud, Xavier; Al-Mukhtar, Muzahim} }

DOI 10.5165/hawk-hhg/323
Link File:SWBSS 2017 Proceedings 74-80 Hassine Beck Brunetaud Al-Mukhtar.pdf
Notes in: Proceedings of SWBSS 2017 - Fourth International Conference on Salt Weathering of Buildings and Stone Sculptures. University of Applied Sciences, Potsdam, Germany, 20-22 September 2017



Bibliography

[Hassine.etal:2017]Hassine, Mohamed Ahmed; Beck, Kévin; Brunetaud, Xavier; Al-Mukhtar, Muzahim (2017): Local strain measurements during water imbibition in tuffeau polluted by gypsum. In: Laue, Steffen (eds.): Proceedings of SWBSS 2017. Fourth International Conference on Salt Weathering of Buildings and Stone Sculptures, University of Applied Sciences Potsdam, Germany, 20-22 September 2017,Verlag der Fachhochschule Potsdam 74-80, 10.5165/hawk-hhg/323Link to Google ScholarFulltext link

Abstract

The research presented in this communication aimed to evaluate the mechanism of spalling generated by mechanical stresses and strains developed due to imbibition and the link with atmospheric pollution generating gypsum in the stone. Tests were carried out on a French limestone, called tuffeau. Local strains were measured using strain gage rosettes during water imbibition in polluted and unpolluted samples. Three rosettes were placed on a sample at different distances from the surface (1, 4, 7 cm) to measure locally the strain during water infiltration. These rosettes determine the strain in three directions 0°/45°/90°. Results concerning the behaviour of polluted stone during imbibition are compared to unpolluted stone. Results concerning differential strains between the surface and the core of the stone due to water infiltration demonstrate unusual behaviour not restricted to expansion alone: a local contraction zone and expansion zone in each direction separately for the stone. Pollution by gypsum has an effect on the strain measurements mainly on the first few centimetres of the stone.