ASTM C1218 is a standard test method used to determine the chloride ion content in concrete.

Chloride ions, particularly when present in high concentrations, can lead to corrosion of steel reinforcement within concrete structures.

This corrosion can compromise the integrity and durability of the structure, leading to potential safety hazards and costly repairs.

The method involves extracting chloride ions from the concrete and then analyzing the extracted solution to determine the concentration of chloride ions present.

The results of the chloride content test are then interpreted in accordance with relevant standards and guidelines to assess the potential risk of corrosion and determine any necessary mitigation measures.

ASTM C1218 provides a standardized procedure for evaluating chloride ion content in concrete, helping to ensure the structural integrity and durability of concrete infrastructure.