AASHTO T 192-19 PDF Download

AASHTO T 192-19 is a standard method used to determine the fineness of hydraulic cement using the 45-micron (No. 325) sieve. The fineness of cement is an important characteristic that affects its quality, strength, and performance in various applications. This standard provides detailed instructions on how to perform the fineness test accurately.

The fineness test involves passing a sample of cement through the 45-micron sieve. The amount of residue left on the sieve is then measured and expressed as a percentage of the original sample weight. The lower the percentage of residue, the finer the cement particles.

By determining the fineness of hydraulic cement, this standard helps ensure that the cement meets the required specifications for its intended use. This is important because the particle size distribution of cement influences its workability, hydration rate, and the overall performance of concrete or mortar in construction projects.