Thanks everyone, By way of update we are awaiting test results from cores. In typical fashion, contractor is non-responsive. We are probably looking at 500k for full replacement. One other "...oh, by the way..." The ding-dong did not put in the required expansion joints nor did he...
Polecat,
Let me elaborate just a bit more. You're right! At 5 days the full strength had not developed. That's why the floor cracked and is being replaced in those sections.
Ah, bonding company or GC...which will fail first. The floor is not cracked right now but with 3k versus 4k, Ron...
Hi Kids and thanks so much for the input. What we have here is a slab, specified to be 4k and we have reason to believe 3k was poured. If the plant was a bit generous, we might be looking at an average of 3200 psi when the after-the-fact testing is completed. The contractor was kind enough to...
Thanks all, Just a follow up to the question... By expected performance variations I mean resistance to surface cracking (spalling) and failure through the slab. Presuming a satisfactory subgrade of modified stone at nominally 95% I would expect failures to be by crushing and more spall...
Would like to make a reasonably precise determination of the expected performance variations of a slab with design strength specified as 3000 psi or 4000 psi mix design. Floor to be reinforced concrete, SOG, with 3k versus 4k being the only variable. Floor is approx 30 ksqft and intended for...
