2012/12/13 by Bruce L. Kutter · 2 citations
Chemistry · Engineering · #Capillary action #Capillary pressure #Centrifuge #Chemistry #Composite material #Degree of saturation #Dissolution #Geology #Geotechnical Engineering and Soil Mechanics #Geotechnical engineering #Grouting, Rheology, and Soil Mechanics #Infiltration (HVAC) #Liquefaction #Materials science #Pore water pressure #Porosity #Porous medium #Saturation (graph theory) #Soil and Unsaturated Flow #Soil science #Soil water #Solubility
paper · doi:10.1139/cgj-2011-0250
openalex publication_date 2012/12/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
To better understand how to prepare completely water-saturated specimens or centrifuge models from dry sand, the mechanisms of the infiltration and filling of pores in sand are studied. Complete saturation has been shown by others to be especially important in studies involving the triggering of liquefaction. This paper discusses how the degree of saturation obtained during infiltration increases with the “Bond number”, Bo (ratio of body forces and capillary forces), and the “capillary number”, Ca (ratio of viscous forces and capillary forces), as well as the solubility of gas bubbles in the pore fluid. Bo is varied by changing the particle size, fluid density, and centrifugal acceleration. Ca is varied by changing the fluid viscosity and infiltration rate. The dissolution of gas is encouraged by replacing pore air by CO 2 (56 times more soluble in water than N 2 ), by de-airing the liquid prior to infiltration or by increasing the pore fluid pressure after infiltration. Infiltration experiments performed at 1g and in a centrifuge are presented. A new technique for measuring the degree of saturation is also presented. Quantitative pressure–saturation relations are presented for different gasses, illustrating the importance of replacement of air by CO 2 . Spinning a specimen in a centrifuge during infiltration is also useful for speeding up the saturation process and for achieving higher degrees of saturation.