Asphalt Paving Level 1 QUESTIONS AND ANSWERS VERIFIED 100% CORRECT

Asphalt Paving Level 1 QUESTIONS AND ANSWERS VERIFIED 100% CORRECT What is the master range tolerance for the temperature of the mix in a mix truck? -+ 15 degrees -+ 30 degrees - ANSWER -+ 30 degrees If a single load exceeds the established mix by -+ 25 degrees but is within the master range, the technician will monitor the temperature of every load until A, The temperatures of five consecutive of 5 consecutive loads are all within 20 degrees of the target temperature -b,the average of any 5 consecutive loads are within 15 degrees of the target C, any single reading must be within 25 degrees of the target D,the average of 5 consecutive loads is within 25 degrees of target temperature. - ANSWER B and c Given the target mix temperature of 290 degrees and the following truck temperatures 280, 285, 295, 300, 275.... No action is required, just document the results Reject the load exceeding the master range temperature target Check the next 5 loads to see if in tolerance and notify the plant - ANSWER No action is required What temperature is tack coat material corrected to for tack spread rate calculations? 60 77 175 320 - ANSWER 60 Tack coats are required Betweeen successful lifts of asphalt base material On all structural course asphalt layers to constructing the next course None of the above Both A and B - ANSWER Both A and B The application rate for PG 52-28 tack is the same as for emulsion T/F - ANSWER False A tack truck distributor tank reading of 20/15 translates to - ANSWER 20 inches 15/16s inches A temperature corrected quantity of tack to 60 degrees in gallons will be ___ than the original measured amount measured at higher temperature. More Less The same as None of the above - ANSWER More What are the units used in determining the asphalt mix spread rate? - ANSWER Lbs/yd^2 Using the random number sheet, what is required to calculate the core location on the roadway? A mix spread rate, thickness, width Mix temperature, tons, thickness, width Random tons, mix spread rate, width, starting station - ANSWER Random tons, mix spread rate, width, starting station If the calculated core location is a distance of 544 feet from the starting station of 123+98, what is the station number of the core? - ANSWER 129+42 To convert from tons to pounds Multiply by 9 Divide by 9 Multiply by 2000 Divide by 2000 - ANSWER Multiply by 2000 What is the hardest thing to do with a road grader? - ANSWER Finish edging The process of locating and fixing reference lines which defines the position of the foundation and outside walls of the building to be erected is called _______. - ANSWER Staking out Emulsifier is considered "cold" if it is less than _______℉. - ANSWER 80℉ Prior to resurfacing, the coursed used to smooth depressions in the surface of the old pavement is called the __________. - ANSWER leveling course What is the AASHTO T-180 test for? - ANSWER Density The compacted density of an embankment beside a roadway is normally _______% - ANSWER 90 - 95% - What is the purpose of leveling wedges? - ANSWER Steel plates used for filling depressions before final paving Resurfacing old pavement that has cracks requires a _______ coat. - ANSWER Slurry seal When a patch needs to bond to old pavement, if left unprotected, it should have a _______. - ANSWER Tack coat After an asphalt patch has been laid, it is important to _______ right away. - ANSWER Compact it What type of asphalt tack coat is most soluble in water? - ANSWER SS-1 The screed of the paving machine consists of (3): - ANSWER Screed plate Tamp bars Controls How are paving machines capable of creating crowned surfaces in roadways? - ANSWER The screed and tamper bar are hinged in the middle The setting of a floating screw unit for designating depth of pavement is called _______. - ANSWER Blocking Steel drum rollers shall be __________ during compaction of aspartic concrete paving. - ANSWER Kept moist with water