ACI Certification- Concrete Field Testing Technician Grade 1 CP-1 (12) Questions and Answers 2024

ACI Certification- Concrete Field Testing Technician Grade 1 CP-1 (12) Questions and Answers 2024 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 The maximum elapsed time allowed between obtaining the final portion of the composite sample and beginning the tests for slump, temperature, and air content is _____ minutes. -Answer-5 The molding of strength test specimens shall begin within _____ minutes after fabricating the composite sample. -Answer-15 The concrete sample must be protected from contamination and _____. -Answer-Rapid evaporation The minimum size sample for making strength test specimens is _____. -Answer-1 cubic foot