Test your basic knowledge |

Civil Engineering Materials

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. To improve workability for fresh concrete






2. Stop and reactivate hydration process






3. Low stability






4. Delay initial set - for long hauls or unusual placement






5. misplaced joints - more specific- spalling- breaking away of edges






6. Good stability






7. makes it mushier because cement grains more distributed






8. High sulfate resistence -






9. Air bubbles for sapce for water to expand when freezes






10. Water used for hydration - water beyond SSD - min- .22-.25 - typical- .4-.5 (.44) - lower WC ratio = more strength -






11. Consolidation - strike off - depress agg - darby or bull float - (TIME) - edging - jointing - floating - (TIME) - texturing - curing






12. Flowable - nonsegregating






13. Nonpotable/potable >90% - the acceptable






14. Crush clinker into super fine powder






15. Trapped air - reduces strength - ups permeabiity






16. Cement paste has bulk SG< cement particles






17. For continued hydration and strength gains - otherwise only 50% strength gained - ups durability and abrasion resistance - prevent shrinkage cracking -






18. Freeze-thaw cycles - bad curing or too much water






19. max is 12 in - more free water= more slump






20. Ponding/immersion - spraying/fogging - wet coverings -impervious papers/plastic sheets - membrane forming - steam - insulating blankets/covers - electric/hot oil/ infrared -






21. Bending moment - no shear in middle third






22. 94 lbs






23. Space between layers in CSH - water in interparticle space held by hydrogen bonds






24. Normal- for general work






25. Cement+water






26. Near surface water is cause






27. Distributes cement grains - cement becomes more mushy -






28. Tricalcium silicate (C3S) - dicdalcium silicate (C2S) - tricalcium aluminate (C3A) - tetracalcium aluminoferrite (C4AF)






29. From chemicals or excessive drying






30. Sum of cumul % retained / 100 - higher= bigger particle sizes= smaller amount of agg needed






31. Do NOT dump in separate piles - deposit in large piles -






32. Low Heat of Hydration- for careful control of heat - dams






33. For early strength gain






34. Water beyond SSD condition






35. Slow down rate of aluminate hydration -produces sulfate ions - flash set - false set in excess - higher rate of C-S-H (strength)






36. Moderate Sulfate Resistance- large piers






37. Volcanic - hardening and crystal molten material ex- granite






38. Cement+course aggregate






39. Sometimes worse






40. Heat and pressure ex- marble - quaertzile






41. Greater =less free water needed to get a given slump






42. Source of hotgases - biggest piece of moving equipment






43. Calcareous (calcium) - argillaceous (aluminum) - iron oxide (iron) - gypsum (silicon)






44. Heavy traffic






45. Corner was hotter on top than bottom - it warped and lifted - pressure makes corner crack -






46. High Early Strength- fast track projects - we want low set time






47. Ups set time






48. Trim subgrade - moisten subgrade - compact (use vibratory roller) - do NOT deposit frozen subgrade or disturb it - uniform - NO water added in front of paver -






49. To increase stability of materials - reduce rutting






50. Stratified structure - disintegrated exitisting rocks - inorganice remains of marine animals - ex- limestone







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests