Nicet Level 2: Concrete Exam Questions and Answers 2024

Nicet Level 2: Concrete Exam Questions and Answers 2024 What is the testing frequency for concrete? - Answer-every 50 yards When should you take cylinder samples? - Answer-Every 100 yards What are the components on a batch ticket? - Answer-1. Ticket Number 2. Plant 3. Project Number 4. Mix ID 5. Time of Batch 6. Time arrival 7. Time Discharge 8. Time Completed 9. Mix proportions When should concrete samples should not be taken? - Answer-Before 10% and 90% of truck has been discharged What should be done after cylinders have been completed? - Answer-placed on a level surface, away from sun, wind and other sources of rapid evaporations When should air, temp and slump tests be conducted? - Answer-within 5 minutes of retrieving sample What size should strength samples be? - Answer-6x12" cylinders What is the minimum and max temps allowable? - Answer-45 degrees to 90 degrees What thermometer range should be used? - Answer-30 degrees to 120 degrees How long should thermometer be left in concrete? - Answer-at least 2 minutes until temp can regulate Temp should be recorded to the nearest? - Answer-1 degree What size rod should be used for slump tests? - Answer-both ends Rounded hemispherical tip, 5/8th diameter, 4" longer than depth of cylinder and max length is 24" How high should the mold be raised and the time duration for the pull during a slump test? - Answer-12" and 5 +- 2 seconds Slump Test should be completed within and record to the nearest? - Answer-within 2 1/2 minutes and recorded to the nearest 1/4" How many layers of concrete are required for slump and air test? "Fresh Concrete" - Answer-3 layers Air test should be recorded to the nearest? - Answer-0.01% How many lifts are required for an air test? " Light weight concrete" - Answer-2 lifts Air test for light weight concrete should be recorded to the nearest? - Answer-.25% What are the standard day breaks for cylinders? - Answer-7 day, 14 day and 28 day. 28 days are for strength What are the standard cylinder size? - Answer-6x12 but 4x8 is now typically used for compressive strength tests What size rod is required for 6x12" cylinder? - Answer-5/8" What size rod is required for 4x8" cylinder? - Answer-3/8" How is cylinder sizes determined? - Answer-Based on aggregate sizes, cylinders are required to be 3 x nominal size of aggregate How many yards of concrete should be discharged before sample taken? - Answer-1 yard What temp should cylinders be maintained? - Answer-60 - 80 degrees for 24 hours