Discussion
State whether the following is true or false.
Accelerated durability tests can fully replace long-term field experience for a new binder.
Answer: B
Correct answer: False
Accelerated tests compress years into weeks by raising temperature or concentration, which can change the mechanism as well as the rate - so a material may pass a test and fail in service, or the reverse. They are essential for screening and for comparison, and they do not substitute for structures that have stood for thirty years.
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