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Fig. 2 | Heritage Science

Fig. 2

From: NaCl-related weathering of stone: the importance of kinetics and salt mixtures in environmental risk assessment

Fig. 2

RH gradients for the crystallization and dissolution experiments (respectively red and blue curves). The horizontal dotted line at 75.34% indicates the RHeq of NaCl at 20 °C. The average time (first recorded datapoint) for the equipment to reach below the RHeq is shown as the red dot (including error bars). The horizontal error bar shows how the equipment needs more time to reach the RHeq during the crystallization experiments, with 0:05:53 for the experiment form 90 to 70% RH and less than a minute for the following experiments. The considered interval times (from t1 to t5) are shown as an example and explained in text above

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