Fig. 1: Influence of selective electrodeposition on the structure of silica sand.
From: Electrodeposition of calcareous cement from seawater in marine silica sands
a SEM images at different scales (i.e., particle, interface, and mineral scale) of loose silica sand subjected to short-term electrical conditioning (i.e., 7 days) at voltages of 2.0, 3.0, and 4.0 V; b SEM images of all the visible solid minerals achieved by electrodeposition; c Raman spectra for minerals precipitated in the tested sands, compared with reference spectra; d SEM images on silica sand at different relative densities (i.e., loose and dense) at a voltage of 2.0 V; e Summary of the affected volumes of cemented (or affected) sand at voltages of 2.0, 3.0, and 4.0 V for short-term tests (7 days) and long-term tests (28 days); f Photographs of the effects of the distinct intrusion mechanisms associated with variable voltages for the long-term tests at 2.0, 3.0, and 4.0 V.
