We are trying to simulate an existing roofing deck that is to be reroofed where the concrete slab (concrete w/c 0.5) is likely wet at the top under the existing damaged/unmaintained roofing assembly. My plan is to create multiple layers of concrete to represent the slab with the top layer of concrete initial conditions being at rh = 1, next layer rh = .98, rh = .95, rh = .9, rh = .8, and rh = .7.
Has anyone tried something similar and found good success with the model? Are there any issues that would arise from this method?
Thanks.