We recently were required to cast 2x2 cubes to test grout for two different types of piles. On both projects with different contractors and grout suppliers, we had very inconsistent strengths. We were required to evaluate strength by 3 cubes at 7 and 28 days. Many times the strength did not...
Ron - I am evaluating joint movement of a 5.5" thick, un-reinforced slab that gets hard wheel forklift traffic every night. The base is crushed concrete over medium dense to dense sand with some silt. The contractor appears to have done what he was contracted to do as far as joint spacings...
