Insulated mold prepares cylinders to emulate in-place strength development

Concrete Block Insulating Systems’ patent-pending TempGuard from Eskimold, a 4- x 8-in. EPS foam mold, replaces plastic concrete test cylinders and eliminates nearly all need for curing boxes. TempGuard’s insulating properties dramatically reduce and slow the detrimental effects variable jobsite temperatures have on concrete test cylinder curing, product developers note.

The mold performs in hot or cold conditions by moderating specimen temperature changes and ensuring the test material cures more like the in-place concrete. TempGuard nets what Eskimold engineers contend are “better and more realistic test results in both jobsite and factory environments, without any change from regular specimen handling or testing methods.”

— Eskimold Products, 800/214-3750, 414/559-6434;


Elapsed time vs. temperature drop

Cross-over effect