ASTM C1709-18 PDF Download

ASTM C1709-18 is a standard guide that provides a technical approach for evaluating alternative supplementary cementitious materials (ASCM) for use in concrete. The guide focuses on materials such as pozzolans and hydraulic materials that fall outside the scope of other specifications (C618, C989, and C1240).

The standard recognizes the importance of established materials like fly ash, slag cement, calcined clays, and silica fume, which have been extensively researched, tested, and used in concrete. However, as the need for new materials arises due to sustainability and environmental concerns, the guide acknowledges the introduction of new potential ASCMs.

For ASCMs that lack a significant performance record in concrete, a comprehensive evaluation based on this guide should be undertaken. This evaluation can be used to demonstrate the material's performance in a specific project or limited marketplace. The guide emphasizes the importance of considering the intended end use of the ASCM and conducting appropriate test methods to establish its suitability.

Additionally, the guide advises users to exercise appropriate risk management and engineering practices when using ASCMs without long-term durability or acceptable field performance. It is important to note that meeting the testing requirements in this guide does not imply conformance to specifications C618, C989, and C1240, as each specific source should be evaluated separately.

Lastly, the guide does not address all environmental and safety concerns associated with using ASCMs. Users are responsible for establishing the appropriate environmental, health, and safety procedures and identifying risk management measures.