ASTM C1698 is the standard for measuring autogenous strain in cement paste and mortar, providing a controlled way to evaluate deformation that occurs without external drying. This matters because autogenous strain can influence cracking risk, dimensional stability, and early-age performance in cementitious materials. By using a recognized test method, producers, researchers, and quality teams can compare results more consistently and support better material assessment.

ASTM C1698 standard overview

The ASTM C1698 standard, titled Standard Test Method for Autogenous Strain of Cement Paste and Mortar, focuses on how to measure strain developed within these materials under sealed or otherwise moisture-controlled conditions. It is used as a technical reference for obtaining repeatable test data on autogenous deformation. In practice, the standard helps define how the test is performed so results from different laboratories or projects can be more meaningfully compared.

Where is ASTM C1698 used?

ASTM C1698 is commonly used in laboratories and materials evaluation settings where cement paste and mortar are tested for dimensional change behavior. It is relevant to research, product development, and quality control work involving hydraulic cement-based materials. The standard may also be used when comparing mixtures, checking formulation changes, or documenting performance characteristics for engineering review. Its value is greatest wherever early-age strain data is needed for controlled testing.

Practical importance of ASTM C1698

In practice, ASTM C1698 supports more reliable testing and better decision-making around cementitious materials. It helps organizations apply a recognized method for autogenous strain measurement, which can improve consistency in specifications, procurement, and product evaluation. The standard also reduces ambiguity when comparing results across test programs. For teams focused on compliance and risk reduction, it provides a dependable reference for documenting performance related to internal deformation.

• Autogenous strain measurement
• Cement paste and mortar testing
• Controlled moisture conditions
• Repeatable laboratory comparison
• Quality and performance evaluation