ASTM C157

ASTM C157 is a standard set by the American Society for Testing and Materials that outlines how to measure the length change of hardened concrete. This test is important for understanding how concrete behaves over time, particularly its shrinkage or expansion. It helps ensure that concrete structures maintain their integrity and durability. By following this standard, engineers and builders can assess the quality of concrete and predict how it might react under different environmental conditions, which is crucial for the longevity and safety of buildings and infrastructure.