Asphalt Paving Level 1 QUESTIONS AND ANSWERS

Asphalt Paving Level 1 QUESTIONS AND ANSWERS A full lot is composed of 5 sublots and 4 cores per lot T/F - ANSWER False What is the most important for consistent compaction of asphalt mix? The mix is hotter in temperature The mix is colder in temperature The mix is uniform in temperature Temperature of the mix does not affect compaction - ANSWER The mix is uniform in temperature Referring to general stationing guidelines, R1 would be ____ than R2 Closer to centerline Closer to outside shoulder Closure to the inside shoulder Both A and C - ANSWER Both A and C While using the rolling straightedge, if the needle goes in the red zone indicating an unacceptable high spot in the section, you then - ANSWER Mark the pavement where the needle first goes into the red zone and place another mark where the needle leaves the red zone and continue For bridge approach slabs, the 15 foot manual straightedge should be set so ____ is on the bridge deck. 1 inch Exactly 1/2 of the straightedge The entire straightedge None of the above - ANSWER 1 inch For the first transverse joint on a project place the ___ on the new pavement while overlapping the transverse joint by one inch. 4 foot level 15 foot manual straight edge Rolling straightedge All the above - ANSWER 15 foot manual straight edge When calibrating to check the low side of the rolling straight edge: Place shims under the outer wheels Place the rolling straight edge on a surface that looks flat Place a 3/16 inch shin under each outside wheel, the gauge should read zero on both sides of the gauge Place shims under the center wheel - ANSWER Place a 3/16 inch shin under each outside wheel, the gauge should read zero on both sides of the gauge When calibrating to check the high side of the rolling straight edge: Place shims under the outer wheels Place shims under the center wheel Place the rolling straight edge on a surface that looks flat Place a 3/16 inch shin under the center wheel. The gauge should read zero on both sides of the gauge. - ANSWER Place a 3/16 inch shim under the center wheel. The gauge should read zero on both sides of the gauge. What do you need to know when manually checking the cross slope? The level length The lane width Height from the end of the level to pavement surface The diameter of the bubble in the level - ANSWER Level length and height from the end of level to pavement surface When paving 5 foot wide shoulders or open-graded friction course FC-5 cores should be taken at the frequency of... 1 per 100 feet 5 per lot 5 per sub lot 1 per 1000 feet None of the above - ANSWER None of the above Density cores for acceptance testing are not required for: Mix less than 1 inch thick Shoulders less than 5 feet wide Acceleration and deceleration lanes less than 1000 feet in length Ramos less than 1000 feet - ANSWER All of the above If a core sample is needed just after paving then Coring can be done immediately Let the pavement be cool to the touch before coring Run extra water from the core rig while coring Wait until the pavement surface temperature has cooled below 160 degrees before coring - ANSWER Wait until the pavement surface temp has cooled below 160 degrees before coring Align the core barrel over the marked sampling location so that It is a slight angle to the pavement It is perpendicular to the truck bumper It is perpendicular to the pavement surface The top of the barrel is tilted slightly towards the truck - ANSWER It is perpendicular to the pavement surface How should asphalt cores be stored when transporting in hot weather? Stacked on top of each other in a box for each project being sampled By standing them upright in a cool shady location By lying them flat in the back of a truck In the cab of a un air conditioned truck - ANSWER By standing them upright in a cool shady location A full lot of super pave asphalt is what size? 1,000 tons 1,000 to 2000 tons 2000 to 4000 tons 1 days production - ANSWER 2000 to 4000 tons Which is not typically used as an asphalt binder in fdot mix designs? PG 52-28 PG 58-22 PG 62-22 PG 76-22(PMA) PG 82-22 (PMA) - ANSWER PG 62-22 Who cuts the density cores used for verification testing? The verification technician The contractor The independent verification testing technician None of the above - ANSWER The contractor Asphalt placed when the mix temperature is too low can cause which of the following problems? Texture problems Density may not be achieved Ride or smoothness problems All the above - ANSWER All the above What is the most accepted way to take the temperature of the hot Mix asphalt in the truck? Use an I fared temperature gun and take the readings over the side of the truck Test The middle third of the side of the truck Use a quick reading thermometer B and c. - ANSWER B and c test and use What is the single load temperature tolerance of the mix in the truck? -+ 15 degrees Of the target mix temperature -+ 25 degrees of the target mix temperature - ANSWER -+ 25 degrees What is the master range tolerance for the temperature of the mix in a mix truck? -+ 15 degrees -+ 30 degrees - ANSWER -+ 30 degrees