Questions And Correct Answers |Already Graded A+||Brand New
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Gmb - SOLUTION-Specific gravity of compacted specimen or pavement core, including air
voids
Gmm - SOLUTION-Theoretical maximum specific gravity or "RICE" specific gravity of
Asphalt-coated aggregated or "specific gravity of mix at zero air voids"
Water batch temperature must be at 77 (plus or minus)2 degrees
Mechanical Foaming - SOLUTION-Temperature can't be less than 260 degrees
Pub 351 - SOLUTION-Asphalt Tech Certification Program
PG-58S-28
PG-64S-22
PG-64E-22 - SOLUTION-215-310 Degrees (COLD)
220-320 Degrees (Non-Heavy)
,240-330 Degrees (Heavy)
Rutting - SOLUTION-Reduced with the proper BINDER grade and Asphalt content.
May have been caused by allowing traffic on a map that was too hot.
Need for a scratch course, leveling, or milling
Scratch Course: used to fill wheel ruts & other local small depressions
Leveling Course: used to provide a relatively uniform level platform for placing binder or wearing
course.
Module 4 page 42
ESAL - SOLUTION-Calculations are NOT linear and cars DO NOT count. 18,000 lbs
Mix Designs
(Base Course, - SOLUTION-Do not place when surface is wet or temperature is 35 Degrees or
below.
Full Depth Reclamation (FDR) - SOLUTION-Existing roadway materials
Stabilized additives
Imported aggregate or RAP
, TR-447 - SOLUTION-Sampling
Sampling - SOLUTION-NO sampling needed for quantities less than 500
Paving Seasons - SOLUTION-Extended paving season is from April 1 to November 15
Paving season is from April 1 to October 31
Density Cores - SOLUTION-Tested using PTM 715 and PTM 716
Cores are to be taken within 1 DAY (24hrs) of placement
Joints - SOLUTION-Offset joints by 6 inches
Overband all joints with Binder-(4+-1)
9.5mm Wearing Course - SOLUTION-Minimum depth is 1 inch
6.3mm placement must be greater than 50 degrees outside and surface
Stone Matrix Asphalt - SOLUTION-PG-64E-22- 240 to 330 Degrees
Prohibited when weather is ≤50 degrees or wet surfaces
93%-98% for 100% payment
NO TACK between layers
-9.5 or -19mm mixes
>50 degrees
Allows infiltration
Do not over compact
Cool to 100 degrees between each layer