Which standards are related?

This topic is commonly discussed alongside ASTM C191, EN 196-3. Always confirm requirements with the official standard text and your quality system.

How should I interpret the results?

Linear interpolation for initial setting time at a penetration or needle–base threshold per ASTM C191 and EN 196-3 bracketing readings. Treat outputs as auxiliary checks; validate against your methods, equipment calibration, and applicable standards.

Testing & Analysis Systems

Vicat setting time interpolation

Linear interpolation for initial setting time at a penetration or needle–base threshold per ASTM C191 and EN 196-3 bracketing readings.

Inputs

Method preset

E — time of last reading at/above threshold (min)

C — depth or gap at E (mm)

H — time of first reading below threshold (min)

D — depth or gap at H (mm)

Results

Interpolated setting time

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Formula

T = E + ((T₀ − C) × (H − E)) / (D − C)

Enter the last reading at or above the threshold (E, C) and the first reading below it (H, D). The calculator applies the ASTM C191 interpolation formula and rounds to the nearest minute.

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