ACI Grade 1 Field Testing Certification Practice T
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ACI Grade 1 Field Testing Certification Practice Test - Irving Concrete Temperature Measurement and Sampling Guidelines 1. Is it true that for fresh concrete with aggregates less than 3 inches, the thermometer must remain for a minimum of 5 minutes or until the reading stabilizes? False. The correct duration is between 2 to 5 minutes. 2. Is the temperature measuring device required to be accurate to within 0.1 degree? False. The accuracy requirement is typically ±0.5°C (±1°F)...