Salt Crystallization in Limestone: Materials Decay and Chemomechanical Approach.

Materials (Basel)

Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università degli Studi di Cagliari, Via Marengo 2, 09123 Cagliari, Sardinia, Italy.

Published: August 2024

Salt crystallization is a particularly relevant issue in the conservation of limestones used in Cultural Heritage sites. In this study, various facies of limestones were characterized through porosimetric and mechanical tests. The samples were subjected to experiments to determine their resistance to salt crystallization by verifying the number of cycles at which 50% of them began to lose weight. This number of experimental cycles was compared with the result calculated by the analytical procedure of a chemomechanical model found in the literature. The comparison showed a significant capability of the model to predict the experimental data.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11356264PMC
http://dx.doi.org/10.3390/ma17163986DOI Listing

Publication Analysis

Top Keywords

salt crystallization
12
crystallization limestone
4
limestone materials
4
materials decay
4
decay chemomechanical
4
chemomechanical approach
4
approach salt
4
crystallization relevant
4
relevant issue
4
issue conservation
4

Similar Publications

High selectivity, capacity and stability for electrochemical lithium extraction on boron-doped HMnO by tailoring lattice constant and intercalation energy.

Water Res

January 2025

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China; College of Environment and Resources, Xiangtan University, Xiangtan, Hunan 411105, PR China. Electronic address:

A sustainable supply of lithium from salt-lake brines is necessary due to the surge in demand of the lithium-battery market. However, the presence of coexisting ions, particularly Na, poses a significant challenge due to the similarities in charge, electronic structure, and hydrated size. The electrochemical system with manganese (Mn)-based lithium-ion (Li) sieves electrodes is a promising method for Li recovery, but often suffers from geometric configuration distortion, which reduces their selectivity and capacity.

View Article and Find Full Text PDF

Vacancy-Mediated Increases in Brine-Salt Surface Energies.

Langmuir

January 2025

Applied Systems Analysis & Research, Sandia National Laboratories, Albuquerque, New Mexico 87123, United States.

Salt formations have been explored for the permanent isolation of spent nuclear fuel based on their high thermal conductivity, self-healing nature, and low hydraulic permeability to brine flow. Vacancy defect concentrations in salt complicate fracture mechanics not driven by dislocation dynamics and can influence the resulting surface structure. Classical molecular dynamic simulations were used to simulate tensile testing of salt crystals (halite) with vacancy defect concentrations of up to 0.

View Article and Find Full Text PDF

Slip flow, a fluid flow enhanced in comparison to that calculated using continuum equations, has been reported for many nanopores, mostly those with hydrophobic surfaces. We investigated the flow of water, hexane, and methanol through hydrophilic nanopores in silica colloidal crystals. Three silica sphere sizes were used to prepare the crystals: 150 ± 30, 500 ± 40, and 1500 ± 100 nm.

View Article and Find Full Text PDF

Symmetry-breaking spin-state transitions in two of three isostructural salts of MnIII spin-crossover cations, [MnIII(3-OMe-5-NO2-sal2323)]+, with heavy anions are reported. The ReO4-  salt undergoes two-step spin crossover which is coupled with a re-entrant symmetry-breaking structural phase transition between a high temperature phase (S = 2, C2/c), an intermediate ordered phase (S = 1/S = 2, P21/c), and a low temperature phase (S = 1, C2/c). The AsF6-  complex undergoes an abrupt transition between a high temperature phase (S = 2, C2/c) and a low temperature ordered phase (S = 1/S = 2, P-1).

View Article and Find Full Text PDF

Drug Property Optimization: Design, Synthesis, and Characterization of Novel Pharmaceutical Salts and Cocrystal-Salt of Lumefantrine.

Mol Pharm

January 2025

Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, Indiana 47907, United States.

Lumefantrine (LMF) is a low-solubility antimalarial drug that cures acute, uncomplicated malaria. It exerts its pharmacological effects against erythrocytic stages of spp. and prevents malaria pathogens from producing nucleic acid and protein, thereby eliminating the parasites.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!