Calmetrix I-Cal 8000 User Manual page 33

the extrapolation. The "Extrapolation Start Time" must be shorter than the time of actual data that
was logged.
(c)
(f)
(g)
The extrapolation will be displayed as a gray add-on to the original curve.
NOTE: Data must be logged long enough to capture most of the heat generation from any given
mix to enable reasonable extrapolation of energy and prediction of compressive strength at later
ages. For most Portland cement based mixes tested at room temperature data must be logged for
a minimum of 48 hours and preferably beyond 72 hours.
For best results, we recommend that the Extrapolation Start Time is at least twice a long as the
time to reach maximum power in the main hydration peak. For example, if the main hydration peak
was reached after 24 hours, we recommend that the Extrapolation Start Time be set at 48 hours or
later.
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(a)
(d) (e)
(h)
(i)
(j) (b)