ACI Concrete Field Testing Technician Grade I Practice Exam Questions and Answers 100% Verified

ACI Concrete Field Testing Technician Grade I Practice Exam Questions and Answers 100% Verified The end of the temperature sensing portion of the temperature measuring device is submerged a minimum of __mm [__in.] into the freshly mixed concrete. - CORRECT ANSWER-77mm /3in. The temperature measuring device shall be capable of accurately measuring the temperature of freshly mixed concrete to +- __C [+__F] throught a range of __. - CORRECT ANSWER-0.5 C / +-1F / 0-50 Decrees C The temp. measuring device shall be verified __, or whenever there is a question of __. - CORRECT ANSWER-Annually / accuracy The temp of concrete may be measured in a wheelbarrow? T/F - CORRECT ANSWERTrue The temp. of concrete may be measured in a wall form. T/F - CORRECT ANSWERTrue A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temp. T/F - CORRECT ANSWER-False What must be done to the sample container prior to sampling the concrete - CORRECT ANSWER-It must be dampened with water What must be done to the concrete surrounding the temp measuring device after the device is submerged in the fresh concrete? - CORRECT ANSWER-Gently press the concrete at the surface around the measuring device. How long must the temperature measuring device remain in the freshly mixed concrete? - CORRECT ANSWER-At least 2 min., no longer than 5 min. After the temperature of the concrete is read, what is then required? - CORRECT ANSWER-Reporting of temp. The temp. of concrete is reported to the nearest __. - CORRECT ANSWER-1 degree F According to ASTM C1064, what is one reason to take the temperature of concrete? - CORRECT ANSWER-to verify conformance to a specific requirement. A max. temp. of freshly mixed concrete is specified in ASTM C1064. T/F - CORRECT ANSWER-False The sample of concrete used for temperature determination must be rodded 25 times. - CORRECT ANSWER-False Sampling by this method covers procedures or obtaining representative samples, on which test are to be performed to determined __ with quality requirements of the specifications under which the concrete is furnished. - CORRECT ANSWERCompliance This method covers sampling from four types of mixers, which are __, __, __, and __. - CORRECT ANSWER-Stationary mixers / Paving mixers / revolving drum mixers / open top mixers The elapsed time between obtaining the first and final portions of a composite sample shall not exceed __ min. - CORRECT ANSWER-15 min. Portions of a composite sample shall be thoroughly mixed before beginn