slush
n.n. a soft, wet mixture of snow and ice that is difficult to walk on. It is like a thick, muddy slurry that sticks to the ground.
n. a mixture of snow and water, typically resulting from melting and refreezing, which forms a soft, unstable layer on the ground. Often used in technical contexts to describe the physical state of a surface.
The heavy slush made walking to the bus stop very slow.
The city's plows struggled to clear the thick slush from the main roads after the sudden thaw.
Engineers must account for the weight of the slush when calculating the structural load on the bridge, as the frozen slurry can exert significant pressure on the support beams.
May be a variant of sludge or imitative like slosh. Perhaps a confluence of both influences.