AASHTO T 105-20 PDF Download

AASHTO T 105-20 is a standard method of testing the chemical composition of hydraulic cement. This standard allows for the use of any test methods that have been proven to have acceptable precision and bias. These methods can be used for a variety of purposes, including referee testing and certification. The standard provides specific chemical test methods for ease of reference for those who wish to use them. These methods are divided into two groups: reference test methods and alternate test methods.

The reference test methods are well-established, classical chemical test methods that offer a comprehensive analysis of hydraulic cements. They provide a basic scheme of analysis for these materials. On the other hand, the alternate test methods focus on the determination of specific analytes in hydraulic cements. These methods can be used independently or as alternatives within the basic analysis scheme, depending on the preference of the analyst and the guidance provided in each method.

It is important for the individual analyst to demonstrate that they can achieve acceptable precision and bias when using these test methods, as explained in Section 4 of the standard. This ensures that the results obtained are reliable and accurate.