ACI Certification- Concrete Field Testing Technician Grade 1 CP-1 (12) Latest 2024 Graded A+

ACI Certification- Concrete Field Testing Technician Grade 1 CP-1 (12) Latest 2024 Graded A+ ASTM C1064 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. 3" The temperature measuring device shall have a capacity of measuring temperature of freshly mixed concrete to ± ______ °F throughout a range of ____________. 1 degree, 30 degrees to 120 degrees The temperature measuring device shall be calibrated ______ , or whenever there is a question of ______ . Annually, accuracy The temperature of concrete may be measured in a wheelbarrow. True or False? True The temperature of concrete may be measured in a wall form. True or False? True What must be done to the sample container prior to sampling the concrete? Dampen with water What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete? 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? minimum of two minutes, maximum of five minutes The temperature of the concrete is reported to the nearest ______ °F 1 degree A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or False? False ASTM C172 Standard Practice for Sampling Freshly Mixed Concrete Sampling by this method is required when tests are to be made to determine _____ with specification requirements. Compliance This method covers sampling from four types of mixers, which are _____ , _____ , _____ , and _____ . 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. 15 Portions of a composite sample shall be thoroughly remixed before beginning tests on the sample. True or False? 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. 5 The molding of strength test specimens shall begin within _____ minutes after fabricating the composite sample. 15 The concrete sample must be protected from contamination and _____. Rapid evaporation The minimum size sample for making strength test specimens is _____. 1 cubic foot When sampling from a stationary mixer, the batch must be sampled at _____ or more regularly spaced intervals during discharge of the middle portion