SOUTHEAST TEXAS CONTINUING EDUCATION ROLLER COMPACTED CONCRETE

Transcription

1 EXAM No.179 ROLLER COMPACTED CONCRETE 1. Roller compacted concrete is typically used on: A. Large placement areas. B. Areas with little or no reinforcement. C. Gabions and riprap. 2. The cost per cubic yard of roller compacted concrete is: A. More than conventionally placed concrete. B. About the same as conventionally placed concrete. C. Less than conventionally placed concrete. D. None of the above. 3. Which is not a savings associated with roller compacted concrete? A. Lower material cost. B. Lower forming cost. C. Reduced construction time. D. Reduced placement cost. 4. The use of is common for roller compacted concrete projects and generally provides for reduced cost and lowered heat generation. A. A water reducing mixture. B. Pozzolan. C. Large aggregates. D. Fibermesh. 5. Which type of portland cement is commonly used in roller compacted concrete? A. Type I. B. Type II. C. Type III. D. Type IV.

2 6. The most common percentage of pozzolan used is A. 50%. B. 60%. C. 40%. D. 80%. 7. Roller compacted concrete containing Class F Fly Ash, is benefited by: A. Lower cost. B. Higher strength. C. Increased placement time and increased workability. 8. The typical nominal size for aggregate in roller compacted concrete is A. <1. B. <2. C. 3 D. >3. 9. The amount of material passing the No. 200 sieve is for roller compacted concrete. A. Greater. B. Less. C. About the same. D. Not considered. 10. The greatest benefit of using fines in roller compacted concrete is. A. Slump. B. Higher strength. C. Segregation. D. Lower water demand.

3 11. Which is not a benefit of using admixtures? A. Improved workability. B. Delay setting time. C. Decreased slump. D. Improved durability. 12. Air entraining admixtures allow the concrete to resist: A. Freeze thaw cycles B. Vehicle traffic. C. Higher Temperatures. D. None of the above. 13. The amount of air entrainment required for roller compacted concrete is considerably than conventional concrete. A More. B. Less. C. About the same. D. None of the above. 14. Which one is not a factor in the durability of roller compacted concrete? A. Cementers material content B. Aggregate quality. C. Percent compaction. D. Compaction equipment. 15. The primary difference in roller compacted concrete to conventionally placed mass concrete is: A. Aggregate size. B. Water content. C. Air entrainment. D. Slump.

4 16. Strength properties of roller compacted concrete are dependent on: A. Degree of compaction. B. Aggregate quality. C. Cement content. 17. Compaction for roller compacted concrete is considered sufficient if the roller compacted concrete has no more than air voids. A. 1%. B. 1.5%. C. 2%. D. 2.5%. 18. Roller compacted concrete is primarily used on A. Dams. B. Foundations. C. Roadways. 19. Roller compacted concrete is typically placed in lifts of: A B C D is one of the most detrimental conditions that can occur in roller compacted concrete: A. Shrinkage. B. Cracking. C. Segregation.

5 EXAM No. 179 ROLLER COMPACTED CONCRETE PLEASE SHADE THE BUBBLE THAT CONTAINS THE CORRECT ANSWER USE NO.2 PENCIL ONLY, ERASE COMPLETELY ANSWER SHEET LEAVE ANY UNUSED ANSWERS BLANK 1 A B C D 21 A B C D 41 A B C D 2 A B C D 22 A B C D 42 A B C D 3 A B C D 23 A B C D 43 A B C D 4 A B C D 24 A B C D 44 A B C D 5 A B C D 25 A B C D 45 A B C D 6 A B C D 26 A B C D 46 A B C D 7 A B C D 27 A B C D 47 A B C D 8 A B C D 28 A B C D 48 A B C D 9 A B C D 29 A B C D 49 A B C D 10 A B C D 30 A B C D 50 A B C D 11 A B C D 31 A B C D 51 A B C D 12 A B C D 32 A B C D 52 A B C D 13 A B C D 33 A B C D 53 A B C D 14 A B C D 34 A B C D 54 A B C D 15 A B C D 35 A B C D 55 A B C D 16 A B C D 36 A B C D 56 A B C D 17 A B C D 37 A B C D 57 A B C D 18 A B C D 38 A B C D 58 A B C D 19 A B C D 39 A B C D 59 A B C D 20 A B C D 40 A B C D 60 A B C D Name: Date : By signing this sheet I hereby certify that I have studied the course materials and the answers given are my own. I received no assistance with the answers on this exam. Signature: Seal or Number: FORM: E7051 REVISED 2005 Copyright 2005

6 EXAM REGISTRATION EXAM No. 179 ROLLER COMPACTED CONCRETE NAME: Company: Address 1: Address 2: City : Telephone: Fax: PE Registration Number: State: Send this Exam Registration along with your completed Answer Sheet. Include check or money order in the amount of $90 for each course. No third-party checks accepted. FORM: E7051 REVISED 2005 Copyright 2005