Modeled versus Experimental Salt Mixture Behavior under Variable Humidity.

ABSTRACT: This study investigates the kinetics of salt mixture crystallization under relative humidity (RH) conditions, varying between 15 and 95% (at 20 °C), to inform applications in built heritage preservation, geology, and environmental sciences. We focused on commonly found, sulfate-rich and calcium-rich salt mixtures containing five to six ions, Cl^-, NO₃^-, Na⁺, and K⁺, including or excluding less common Mg²⁺, and including either an excess of SO₄^2- or Ca²⁺, with respect to gypsum. Using time-lapse micrographs and dynamic vapor sorption, we explore how crystallization and dissolution behavior depend on RH and mixture composition under constant temperature. A range of RH change rates were studied t

SUBMITTER: Godts S 

PROVIDER: S-EPMC11080023 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature