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ASTM C157/157M Standards for Cement Tests

The ASTM C157/157M standard, titled "Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete," provides guidelines and procedures for determining the length change of hardened hydraulic-cement mortar and concrete. This test method helps assess the dimensional stability and potential expansion or contraction of cementitious materials.

ASTM C157/157M outlines the testing method using prismatic specimens of mortar or concrete, which are subjected to specific drying or wetting conditions. The specimens are measured before and after the exposure to determine the length change.

Products associated with ASTM C157/157M include mortar or concrete samples, which are used to prepare the prismatic specimens. Testing equipment such as molds for specimen preparation and measuring devices, such as calipers or extensometers, may be utilized.

By adhering to the ASTM C157/157M standard and utilizing associated products, engineers, researchers, and testing laboratories can assess the dimensional stability and potential length changes of hardened mortar and concrete. This information aids in designing and specifying materials for construction projects, ensuring the durability and performance of cementitious structures over time.

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