1 Bentonite microstructure and saturation evolution in wetting- 1 drying cycles evaluated using ESEM, MIP and WRC 2 measurements 3 4 Manuscript submitted to Géotechnique on 06/10/2017 by: 5 6 Haiquan Sun 1 7 PhD student 8 Tel: +420221951556 9 Email: [email protected] 10 11 David Mašín 1 (corresponding author) 12 Associate Professor 13 Tel: +420221951552 14 Email: [email protected] 15 16 Jan Najser 1 17 Senior Lecturer 18 Tel: +420221951555 19 Email: [email protected] 20 21 Vilém Neděla 2 22 Researcher 23 Tel: +420 541 514 333 24 Email: [email protected] 25 26 Eva Navratilova 2 27 Researcher 28 Tel: +420 541 514 333 29 Email: [email protected] 30 31 1 Faculty of Science 32 Charles University in Prague 33 Albertov 6, 128 43 Praha 34 Czech Republic 35 36 2 Institute of scientific instruments 37 The Czech Academy of Sciences 38 Královopolská 147, 612 64 Brno 39 Czech Republic 40 41