Effects of wetting/drying cycles on pore characteristics in sandstone from Wanzhou, China

The microstructure and appearance of sandstone samples from the bank slope of the Three Gorges Reservoir of the Yangtze River in Wanzhou District, Chongqing, China were evaluated before and after wetting/drying cycles in aqueous solution using nuclear magnetic resonance spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy. Water/rock interactions including dissolution, ion exchange, hydration, dissolution and...