Open AccessInfluence of concentration change of calcium ions over time on their diffusion through sandstone
Author(s) -
Klára Kobetičová,
Igor Medveď,
Martin Keppert,
Robert Černý
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/549/1/012043
Subject(s) - diffusion , calcium , ion , salt (chemistry) , chemistry , mineralogy , chemical engineering , thermodynamics , physics , engineering , organic chemistry
Diffusion is one of the most important salt transport mechanisms. The knowledge of the rate of transport of ions in the pore system of building materials is thus of primary importance for their service life prediction. In this paper, the transport of Ca 2+ in sandstone Mšené was studied as a model system; two types of experiment were performed: a) without addition of Ca 2+ ions for the achievement of original initial concentration and b) continuous addition of Ca 2+ ions. The experiment was performed under laboratory conditions in a two-side plexiglass box at the ambient temperature of (20±2) °C for a period of 426 hours. Calcium concentrations were analyzed chelatometrically.