FDOT Asphalt Paving Level 2 Questions And Answers | Updated Solutions | 100% Correct Answers

FDOT Asphalt Paving Level 2 Terms in this set (94) Save What makes up a quality asphalt mixture? A quality asphalt mixture is determined by the constructability, if it conforms to Specifications, and if it satisfies functional requirements. CQC contractor quality control Superpave Asphalt mix design system since 1998 QCP Quality control plan QCM Quality control Manual QC Quality Control (Contracting Testing and Inspection) VT Verification Testing (FDOT or CEI Verification) CEI Construction Engineering and Inspection RT Resolution Testing (FDOT) IV Independent Verification Testing IA Independent Assurance Testing The decision-making authority on a job needs to be given to who? Needs to be given to the level closet to the work as specified in the specifications. It ensure a quick handle on situations and issues. The governing order of project documents from high (1) to low (7) starts with the highest being Special Provisions 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet project documents from high to low (2) Technical Special Provisions The governing order of project documents from high to low (3) Plans The governing order of project documents from high to low (4) Road design, structures, and traffic operations standards The governing order of project documents from high to low (5) Developmental Specifications The governing order of project documents from high to low (6) Supplemental Specifications The governing order of project documents from high to low (7) Standard Specifications What are the key components in a prepaving conferences? Key Personnel (Paving superintendent) Contractor Input Agency Input QC Plan Review Discuss more specific key topics or issues Meeting Minutes Action items (what to do in situations, who to call) What are the key components in a preconstruction conferences? Agency Input (FDOT) Contractor Input (Including the Prime) Project Personnel (Upper - Middle management) Testing Safety Utilities Cities or Municipalities (HOA, school boards) Suppliers 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet compactive effort increase? Crushed aggregate content Nominal maximum size Hardness of the aggrergate Angularity of aggregate Less natural sand High dust content mixes Gradation of the mix greatly affects compaction Superpave mixes What kind of Performance Graded binders are there? PG 67-22 (old AC-30) PG 52-82 PG 58-22 PG 76-22 (PMA) Polymer modified asphalt PG 76-22 (ARB) Asphalt rubber binder PG 82-22 (PMA) polymer modified asphalt What are PG binders tested for high temperature wise? A 7 day max pavement temp of 67C What are PG binders tested for low temperature wise? -22C Friction course has what PG binders in its makeup? PG 76-22 (PMA) PG 76-22 (ARB) PG 82-22 (PMA) Asphalt cement does what while hot? Acts as a lubricant Asphalt cement does what while cold? It becomes a glue and holds the rocks together PG 76-22 (PMA) is especially good at what? Reducing rutting. What is an asphalt treated permeable base? Concrete placed over asphalt Friction course mixes uses a what kind of aggregate? A polish resistant aggregate 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet aggregate? Oolitic limestone (Miami-Dade County) Granite (Georgia, Alabama, Nova Scotia) Other Approved Sources Asphalt generally has a minimum thickness to be laid at but what determines how thick? The plans developed by the designer does What is the difference between Superpave mixes and Friction Course mixes? Polish resistant aggregate and special PMA or ARB binders are used in friction course mixes. A shoulder less than 5 ft with FC-5 can not have what? A joint. Pave the outside of the mainline and the shoulder at the same time. B-12.5 mix can be substituted for what? SP-12.5 TL-B or C can be used in lieu of the base mix B-12.5 mix can also be substituted for what? The contractor may substitute a SP 12.5 TL-D or E mix in lieu of base mix as long as it does not exceed 500 tons for a project and at no extra cost. GMM stands for Gravity mixture maximum GMB stands for Gravity mixture bulk GSB stands for gravity stone bulk and is used to calculate the FC-5 target spread rate and the VMA for dense graded mixes. The formula for airvoids is % = 100 x (gmm - gmb / gmm) The formula for roadway density is % gmm = (gmb/gmm) x 100 Determining a Target asphalt spread rate for non FC-5 mixes target spread rate = thickness x gmm (from mix design) x 43.3 (round to the nearest whole number) 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet the asphalt spread rate target? +- 5% How do you calculate the tolerance for the asphalt spread rate target? Ex: Target Spread Rate = 165 lb/syds 165 x 0.05 (%5) = 8 lb/syd Then you use the 8 as a + or - from 165 so the range is from 157 to 173 lbs/syd Formula for determining the asphalt spread rate for an FC-5 mix? target spread rate = thickness x gsb (from mix design) x 40.5 (round to the nearest whole number) A prime coat being used on lime rock, sand-clay, shell, and shell stabilized based have an application rate of what? Limerock: greater than or equal to 0.10 gal/syd Sand-Clay, Shell, Shell Base: greater than or equal to 0.15 gal/syd You do not test overbuild for density unless it is? Greater than one inch Where do you find approved tack products? On the FDOT Approved products list (APL) During night what is the tack you usually use? PG 52-28 or an approved emulsion What tack an you use during the day? Any kind of tack When determining the specification rate for 52-28 tack you do what? Multiply the rate by 0.6 What is the tack application rate tolerance? +/- 0.01 gal/syd Step 1 for figuring the tack spread rate Find the length of the tack shot Station - station = ft 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet spread rate Find the square yards feet x width / 9 = syds Step 3 for figuring the tack spread rate Use the distributor chart to find the gallons used start 11/13 - 1319 gal end 18/14 - 1140 gal = gallons used Step 4 for figuring the tack spread rate Find the correction factor on the temperature sheet corresponding to the correct liquid to convert the gallons to 60F EX: 160F correction factor = 0.9756 gallons used x correction factor = gallons at 60F Step 5 for figuring the tack spread rate gallons used at 60F / syds = tack spread rate What is the application rate for ARMI layers? 0.6 - 0.8 gal/syd Use the AC(ARB) temperature correction factor What is the spread rate for the chip spreader? 0.26 to 0.33 ft/syd with the actual spread rate determined by the engingeer What is the minimum thickness for asphalt being placed over an ARMI layer? 1 1/2 inches unless plans call for a thicker mat Where should you stick a thermometer in a truck? The hole should be 1/4 of an inch In the middle third of the length of the body and 6 to 10 inches above the bottom of the bed How much asphalt should be in front of the screed being mixed by the augers? The proper head of material is at the center of the auger shaft While the paver is moving the augers should be moving 80 - 90 % of the time 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet used to do what raise the heat of the mix When matching paved joints you must have a Joint matcher ( sonic or shoe paddles) The ski pole for the join matcher has to be how long 25ft Longitudinal (horizontal when facing down the road) joint should always be staggered how far apart 6 to 12 inches While paving an unsupported edge the edge can no deviate more than how far from the string line? +/- 1.5" Tapers are required on joints when the adjacent travel lanes has a difference in elevation greater than 1 1/2 For the rolling straight edge the deficiencies must be fixed when greater than 3/16' Mark 50 feet from each side of the start and end of the deficiency What is the compaction temperature range? 180 - 300F Anything below is the stop point, can't achieve any more compaction The formula for Pounds per linear inch is PLI = roller weight LB / sum of drum widths IN To increase the compactive effort you can Increase the air pressure (traffic roller) Increase the weight Slow down the paver (increase dwell time) 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet Frequency is what? The frequency in the vibration cycles that rotate per minute Impact spacing is what? Is the spacing of the impacts of the applied force is a function of the frequency of the vibration and the travel speed. There should be 10 - 12 impacts per foot Vibratory rollers can finish the pass by using a static pass (no vibratory) How cool does the asphalt have to be for traffic to drive on it? 160F For BASE what is the lowest temperature limitations? 40F For BASE you can exceed in laying more than how thick more than 3 inches The formula for figuring a BASE asphalt spread rate is spread rate = thickness x gmm x 43.3 Has the same tolerance or +/-%5 as structural Do not place friction course until the shoulder has been dressed and grassed FC-5 low end ambient air temperature is what? 65F unless the engineer approves use in 60F 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet edge deficiency found on the friction course layer the contractor and the engineer can elect to take a no pay instead of remove and replace. That formula is length of deficiency (+50 ft both sides) x width x depth of layer What is the minimum amount of RAP in a mix Maximum 20% by weight of total aggregate There is a minimum of how many cores even if the lot is terminated? Three cores Density makes up how much of pay? 35% Airvoids makes up how much of pay? 25% AC makes up how much of pay? 25% #200 Sieve makes up how much of pay? 10% #8 sieve makes up how much of pay? 5% What is the standard lot size for FC-5? Always 2000 tons What is the formula to determine the core location? 2000 x spread rate x 9 / width x tonnage of the core = feet from starting station 8/8/25, 3:28 PM FDOT Asphalt Paving Level 2 Flashcards | Quizlet