Original title: Crystallization force of sodium chloride
Authors: Koudelková, Veronika ; Wolf, Benjamin
Document type: Papers
Conference/Event: Engineering mechanics 2018 /24./, Svratka (CZ), 20180514
Year: 2018
Language: eng
Abstract: Soluble salts are one of the most deteriorating factor causing damage of historical building materials due to generation of crystallization pressure inside pore space. Direct measurement of crystallization force is quite challenging, hence we developed at our institute a novel device able to detect the force of growing crystal. The device is based on the monitoring of force developed with upper microscopic glass on the growing crystal to maintain constant position. The crystal could generate force because of the existence of thin liquid layer of solution between both surfaces come into contact. The driving force for the subsequent growth of crystal against obstacle is supersaturation, which is mainly induced by evaporation of the salt solution. In this experiment, the crystal of sodium chloride generated force 16.8 mN and the corresponding crystallization pressure was equal to the value 0.48 MPa.
Keywords: crystallization force; salt deterioration; sodium chloride
Project no.: GBP105/12/G059 (CEP)
Funding provider: GA ČR
Host item entry: Engineering mechanics 2018. Book of full texts, ISBN 978-80-86246-88-8, ISSN 1805-8248

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www.engmech.cz/improc/2018/417.pdf
Original record: http://hdl.handle.net/11104/0283990

Permalink: http://www.nusl.cz/ntk/nusl-375250

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Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers
 Record created 2018-05-28, last modified 2019-10-20

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