AASHTO T 105-21 PDF Download

The AASHTO T 105-21 standard is focused on the chemical analysis of hydraulic cements. It allows for the use of any test methods that have been proven to be precise and unbiased for the analysis of hydraulic cements, whether it be for referee purposes or certification. The standard provides specific chemical test methods as a reference for those who wish to use them. These methods are categorized into Reference Test Methods and Alternate Test Methods. The Reference Test Methods are well-established traditional chemical test methods that offer a comprehensive analysis scheme for hydraulic cements. On the other hand, the Alternate Test Methods allow for the individual determination of specific analytes and can be utilized as a standalone option or as alternates and determinations within the comprehensive analysis scheme, based on the preference of the analyst and as indicated in the respective method. The analyst is responsible for demonstrating the achievement of acceptable precision and bias when utilizing these methods, as further explained in Section 4 of the standard.