ACI Certification- Concrete Field Testing Technician Grade 1 CP-1 (12) Exam Questions and Answers

ACI Certification- Concrete Field Testing Technician Grade 1 CP-1 (12) Exam Questions and Answers ASTM C1064 - Answer-Standard Test Method For Temperature of Freshly Mixed Hydraulic-Cement Concrete The sensor of the temperature measuring device shall be submerged a minimum of ______ inches into the freshly mixed concrete. - Answer-3" The temperature measuring device shall have a capacity of measuring temperature of freshly mixed concrete to ± ______ °F throughout a range of ____________. - Answer- 1 degree, 30 degrees to 120 degrees The temperature measuring device shall be calibrated ______ , or whenever there is a question of ______ . - Answer-Annually, accuracy The temperature of concrete may be measured in a wheelbarrow. True or False? - Answer-True The temperature of concrete may be measured in a wall form. True or False? - Answer- True What must be done to the sample container prior to sampling the concrete? - Answer- Dampen with water What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete? - Answer-Close off air voids by gently pressing the concrete around the device How long must the temperature measuring device remain in the freshly mixed concrete? - Answer-minimum of two minutes, maximum of five minutes The temperature of the concrete is reported to the nearest ______ °F - Answer-1 degree A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or False? - Answer-False ASTM C172 - Answer-Standard Practice for Sampling Freshly Mixed Concrete Sampling by this method is required when tests are to be made to determine _____ with specification requirements. - Answer-Compliance This method covers sampling from four types of mixers, which are _____ , _____ , _____ , and _____ . - Answer-Stationary mixers, paving mixers, revolving drum mixers and open top mixers The maximum allowable time between obtaining the first and final portions of a composite sample is _____ minutes. - Answer-15 Portions of a composite sample shall be thoroughly remixed before beginning tests on the sample. True or False? - Answer-True