ACI Aggregate Level 2 Practice Questions - ACI Aggregate Testing Technician - Level 2 Exam

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According to ASTM C1260 (accelerated mortar bar test for ASR), a 16-day expansion greater than what threshold is generally considered indicative of potentially deleterious alkali-silica reactivity?

0.04% 0.10% 0.20% 0.50%

Correct Answer:

0.20%

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