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Penetrometers (Product# HU4134)

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Lightweight, spring-reaction type concrete pentrometer for field and lab evaluation of the initial set of concrete mortar based on ASTM C403. Penetration plunger has a 1/20 sq.inch tip area. Plunger is steadily pushed into the mortar to a 1 inch depth, as indicated on the shaft, at periodic time intervals. Penetrometer's calibrated range is 0-700 psi. Resistance in psi is indicated on the scale. The term "initial set" is the semi-hardened, partially hydrated condition of the concrete beyond which it can no longer be worked. The point of initial set is reached when the penetration value is 500 psi.

Product Specification
StandardsASTM C780