ACI Certification - Concrete Field Testing Technician - Grade 1 - Test Sample Written Exam Questions - CP-1(17) with 100% Correct Answers

ACI Certification - Concrete Field Testing Technician - Grade 1 - Test Sample Written Exam Questions - CP-1(17) with 100% Correct Answers The Method of determining air content of concrete containing lightweight aggregate is the pressure method. True or False? - Answer- False When making a test cylinder from concrete being used in construction, the field technician must also measure the slump of the concrete. True or False? - Answer- True While the technician is checking the slump of the concrete, there is a decided falling away or shearing off of concrete from one side of the sample. What should the technician do? - Answer- Disregard the test and retest on another portion of the sample Preparation of specimens for transport includes - Answer- Determining that at least 8 hours has elapsed since the final set If the aggregate correction factor for a given source of fine and coarse aggregate is found to be .2% in a pressure air meter, and an air content value of 5.0% is read on the gage of the same air meter containing concrete with the same aggregate, what is the correct air content in %. - Answer- 4.8% = 5.0 - 0.2 Strength test specimens transported from the field to the testing laboratory must be - Answer- Protected from jarring, moisture loss, and freezing.