AMCRETE UK are often requested to provide assessments and reviews of existing mix designs, either before a Project begins or, as in some cases, during operations such as Pre-Cast elements.
AMCRETE UK have been called in to review mix designs to identify where the material proportions have changed over a period of time, leading to the rejection of units, which becomes costly.
There is no harm and is good advice, to routinely assess and review your designs.