Publications by authors named "J Desarnaud"
Article Synopsis
- This study examines how different relative humidity (RH) levels affect the crystallization of salt mixtures, which is important for fields like building preservation and geology.
- The researchers used various methods, including time-lapse imaging and microstructural analysis, to observe how composition and RH rates influence crystallization and dissolution behaviors.
- Findings indicate that rapid and slow humidity changes significantly impact salt phase transitions, leading to deviations from predicted models, which could inform better preservation techniques and understanding of geological processes.
Article Synopsis
- Salt weathering of stones is influenced by crystallization pressures in pore spaces and is driven by Relative Humidity (RH).
- Most research has focused on single salts, highlighting the need to study salt mixtures to better understand weathering.
- The study identifies 14 common salts and their critical RH points, providing valuable insights into weathering processes and guiding future experimental research on stone weathering.
Article Synopsis
- Understanding salt mixtures is essential for assessing damage in building materials, which often show signs of deterioration due to salt.
- The study analyzes a dataset of 11,412 samples from 338 sites, applying charge balance calculations to evaluate ion concentrations of common salts like Na, Cl, and SO.
- The findings help identify typical salt compositions and theoretical carbonates that affect mixture behavior, providing useful data for thermodynamic modeling.
The growth of hopper crystals is observed for many substances, but the mechanism of their formation remains ill understood. Here we investigate their growth by performing evaporation experiments on small volumes of salt solutions. We show that sodium chloride crystals that grow very fast from a highly supersaturated solution form a peculiar form of hopper crystal consisting of a series of connected miniature versions of the original cubic crystal.
View Article and Find Full Text PDFSalt crystallization is a major cause of weathering of rocks, artworks and monuments. Damage can only occur if crystals continue to grow in confinement, i.e.
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