ACI Field Testing Tech Grade 1 Exam Questions with 100% Correct Answers

ACI Field Testing Tech Grade 1 Exam Questions with 100% Correct Answers What is the mallet weight for most tests? - Answer- 1.25 +- 0.5lb. What material mallet do most tests call for? - Answer- rawhide or rubber what is the minimum vibrations per minute most tests call for? - Answer- 9000 VPM What is the diameter of vibration tool use for most tests? - Answer- 3/4" - 1 1/2" what are the dimensions of a plastic or acrylic strike off plate? - Answer- -1/2" thick -1" wider than bowl opening what are the dimensions of a metal strike off plate? - Answer- -1/4" thick -1" wider than bowl opening what are the detentions of a plastic or acrylic strike of bar? - Answer- 1/8" x 3/4" x 12" what are the detentions of a metal strike of bar? - Answer- 1/4" x 3/4" x 12" how long do you have to form a composite sample? - Answer- 15 minutes how long after you form your composite sample do you have to start temperature and slump? - Answer- 5 minutes how long after you form your composite sample do you have to start forming cylinders? - Answer- 15 minutes what is the max aggregate size for slump? - Answer- 1 1/2" what is the max aggregate size for pressure test (air content)? - Answer- 2" what is the max aggregate size for volumetric test (roll-o-meter)? - Answer- 1 1/2" what is the max aggregate size for 6" x 12" cylinders? - Answer- 2" what is the max aggregate size for 4" x 8" cylinders? - Answer- 1 1/4" what section explains making composite samples of fresh concrete? - Answer- C172 what section explains how to take temperature of fresh concrete? - Answer- C1064 what section explains how to perform slump test? - Answer- C143 what section explains how to test for density and unit weight? - Answer- C138 what section explains how to do the pressure test for air content? - Answer- C231 what section explains how to perform the volumetric test with the roll-o-meter? - Answer- C173 what section explains how to form cylinders and flexural strength specimens? - Answer- C31 what is the minimum composite sample size? (C172) - Answer- 1ft^3 [28L] what do you need to protect the composite sample from? (C172) - Answer- -moister loss -temperature -contamination the composite sample must be taken after what has been added? (C172) - Answer- - water -admixtures