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Table 1 Crystallization and Dissolution times t3 (C and D) of confined NaCl crystal(s)/solution in 4 capillaries (inner diameter: 100 µm); also represented in the graph below as determined by (GenRH/MCell; Hirox) at different RH targets (90% for D and 20% for C).

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

Capillary number (cap.) Crystallization time (t3) (20% RH) (hh:mm:ss) Dissolution time (t3) (90% RH) (hh:mm:ss) Initial distance of crystal(s) from entrance of (c) at 20% RH (μm) Distance of solution meniscus to the entrance of (cap.) at complete dissolution 90% RH (μm) (C: before cryst. exp.) and (D: end disso. exp.) Distance from the entrance of (cap.) to the solution meniscus at the onset of crystallization (μm) Start volume of the solution (complete dissolution and solution expansion at 90% RH) (μl) Solution volume (onset of crystallization at 20% RH) (μl)
Code t3 C t3 D d1 d2 d3 V1 V2
1 0:03:27 0:21:35 20 86 (C) –11 (D) 148 514 239
2 0:05:58 0:23:50 0 167 (C) –33 (D) 230 667 315
3 0:04:00 1:08:19 362 368 (C) –304 (D) 387 442 191
4 0:17:12 2:24:26 411 467 (C) –391 (D) 538 722 371
  1. The distance (µm) of the crystals/solution to the entrance of the capillaries and the volumes of the solutions at different stages of the experiment are presented