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Sorry for my choice of words yesterday. Hope this is better explained: ground water flooded two finished rooms in my basement. Took out rotting, mildewed drywall, studs, sill plate, insulation. A contractor dug a trench 10" wide in the floor at the base of the exterior walls, installed a floor-to-ceiling vapor barrier that drains any/all incoming moisture into that trench and out via a shiny new sump pump. (For the first time in 30+ years, no water ingress.) Now, I'm replacing those walls. The trench the contractor dug was about 15" deep, lined with gravel, fitted with a porous pipe, covered with more gravel and finished with a layer of cement - how thick? Maybe an inch or so... There already are some cracks in the stuff. But the gravel/pipe combo is working very well so no problems yet. Except I need to put down a new sill-plate on the floor and am concerned that trying to drive anything into this cement will shatter it. So I want to use liquid nails. Think I can?