Final Answer:
The average of the expansion of the aggregate at 16 days when tested in conformance with the requirements is less than or equal to 0.10 percent.
Step-by-step explanation:
When testing the expansion of aggregates, it is crucial to ensure that they meet specific requirements to guarantee their suitability for various construction applications. The average expansion of the aggregate at 16 days is a critical parameter to assess its performance. In this case, the requirement specifies that the expansion should be less than or equal to a certain percentage.
To calculate this, the average expansion value at 16 days is compared to the specified limit. If the average expansion is equal to or less than the specified percentage, then it meets the requirements for use in construction projects.
Aggregate expansion is typically measured using specific testing methods, such as ASTM C1260, which involves subjecting the aggregate to alkali-silica reaction conditions. The resulting expansion is then monitored over a period of time, commonly 16 days.
By comparing the average expansion value obtained from these tests to the specified limit, engineers and construction professionals can ensure that the aggregates used in their projects will not exhibit excessive expansion that could compromise the integrity of concrete structures.
In summary, ensuring that the average expansion of aggregates at 16 days conforms to specified limits is essential for maintaining the quality and durability of concrete in construction projects.