[bert]

Is this what you were alludung to? We still use it today to improve the workability of concrete

Description
Pozzolith 100 XR is a readyto-
use liquid admixture for
producing more uniform and
predictable quality concrete.
Placing and finishing
requirements are facilitated
because this admixture retards
setting time. Pozzolith 100 XR
admixture meets ASTM C 494
requirements for Type B,
retarding, and Type D, waterreducing
and retarding,
admixtures.

[decimon]

Is this what you were alludung to?

I don't know. And I don't want to know what "alludung" is. ;-)

'Pozzolith' could mean something or it could be just a convenient trade name.