AASHTO T 129 – Amount of Water Required for Normal Consistency of Hydraulic Cement Paste

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AASHTO T 129 is the AASHTO standard method of test for the amount of water required for normal consistency of hydraulic cement paste. The current edition is T 129-25.

AASHTO publishes its materials test methods for use by transportation agencies, contractors and suppliers, and its 2025 release lists technical changes for this method in Sections 1.3 and 5.3. Cement producers and testing labs run this test where a cement specification or agency requirement calls for it. Before testing, labs confirm that their procedure follows the current edition and the requirements of the specification that cites it.

A manual Vicat apparatus is used for normal consistency testing of cement paste to AASHTO T 129. If you need help matching AASHTO T 129 requirements to your parts or setup, contact our team.

Products With This Standard: AASHTO T 129

Below you can find the products in our catalog that support this standard and the related testing workflow.

Manual Vicat Apparatus

Manual Vicat Apparatus

The Manual Vicat Apparatus is used to determine the setting time of cement paste through controlled penetration of a needle or plunger into a prepared sample. Its metal frame, sliding rod, graduated scale, adjustable indicator, and 300 g test weight provide a straightforward setup for research, quality inspection, and compliance work. Optional EN or ASTM/AASHTO accessories support different laboratory requirements.

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Automatic Vicat Apparatus

Automatic Vicat Apparatus

The Automatic Vicat Apparatus determines cement paste standard consistency and setting time with less operator intervention than a manual frame. It uses automated position calibration, position memory, frictionless needle drop, high-precision LVDT displacement measurement, touchscreen operation, and onboard storage for up to 200 test groups. Support for ASTM C187, ASTM C191, EN 196-3, and related methods makes it practical for cement QC labs.

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