Answer :
Final answer:
The query involves identifying standards for measuring dry film thickness over concrete, including option A) ASTM D6132, B) ISO 2808, C) SSPC-PA 9, and D) ASTM D4541, which are essential for ensuring coating quality on concrete structures.
Explanation:
The question asks about standards used for measuring the dry film thickness of coatings over concrete. There are several standards applicable to this field, including A) ASTM D6132, B) ISO 2808, C) SSPC-PA 9, and D) ASTM D4541. Each of these standards provides specific methodologies and requirements for accurately measuring the dry film thickness to ensure that coatings on concrete surfaces meet specified performance criteria. Knowing these standards is crucial for engineers and professionals involved in the construction, inspection, and maintenance of coated concrete structures to ensure longevity and durability.