Answer :
Final answer:
Ready mix concrete should be tested at both the plant and the construction site, following ASTM standards. Office testing is less common due to the specific conditions required for accurate testing.
Explanation:
Ready mix concrete should ideally be tested at both the plant where it is produced, and the site where it is being used. At the plant, the raw materials and the final mix can be tested for the appropriate ratios and overall quality. Once at the site, it is common to perform further tests to ensure that the concrete has not been adversely affected during transportation. The test procedures are often guided by ASTM (American Society for Testing and Materials) standards to ensure quality and consistency. Office testing is less common as the samples need to be under specific conditions that are hard to emulate in an office environment.
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