Construction and The Built Environment > EXAM > Asphalt Field Level I Test with 100% Verified solutions| Graded A+ (All)

Asphalt Field Level I Test with 100% Verified solutions| Graded A+

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Hierarchy of construction documents (least to most) - ✔✔Standard drawings, Standard specs, Supplemental specs, Plans, Special provisions, Special provisions copied notes Which construction documents details approved additions and revisions to the standard spec - ✔✔Supplemental specs This ensures an adequate bond between the existing pavement surface and the new asphalt overlay so that slippage and delamination do not occur - ✔✔Tack coat Which tack coat can be used prior to May and after September? - ✔✔Conventional Which tack coat can be used year round, and must be used from May through September? - ✔✔Trackless What is the range of proper tack coat application? (in gal/yd^2) - ✔✔.05 to .10 Proper tack coat will leave a residual asphalt cement content ranging from approximately...? (in gal/yd^2) - ✔✔.04 to .06 Most asphalt emulsions contain __% to __% residual asphalt cement - ✔✔60, 65Most asphalt emulsions contain __% to __% water - ✔✔35, 40 When is a prime tack coat required? - ✔✔When required by the contract What could cause poor bonding on an asphalt overlay on a milled pavement? - ✔✔dirt, dust, scabbing Air blowing the surface, dampening/flushing surface with water, and sweeping with mechanical broom can all be used to..... - ✔✔clean a milled surface This truck delivers mix directly into the hopper of the paver - ✔✔End dump truck This truck employs a conveyor belt in the bottom of the truck bed to discharge asphalt mix - ✔✔Live bottom truck This allows the paver to be operated almost continuously when a continuous supply of mix is available from the asphalt plant - ✔✔MTV This eliminates the problem of haul trucks bumping into the paver and segregation - ✔✔MTV What is the correct way to load a truck with asphalt? - ✔✔There is no one correct way What cannot be done to asphalt so that it is warm upon arrival at the jobsite - ✔✔OverheatWhat should never be used as a dump truck release agent? - ✔✔Diesel This is used to determine the amount of mix in the auger chamber - ✔✔Feed control sensor As required in Virginia, what must be coated with a heavy tack coat for proper joint adhesion? - ✔✔Cold side Pushing mix off of the old lane and onto the new mat directly over the joint is called - ✔✔Bump When it comes to joint overlapping, mix should not be __________ across the new lane - ✔✔rebroadcast This regulates the amount of mix that can be delivered to the augers - ✔✔Conveyor flow gates The paver consists of what two primary parts? - ✔✔tractor, screed What is the single most important factor that affects the ultimate performance of asphalt concrete layers - ✔✔Compaction A 1% increase in air voids equals ___% loss of pavement life - ✔✔ What is the minimum percent of air voids in the field? - ✔✔92.5%Normal values of nominal amplitude range from ____ to ______ - ✔✔.01, .04 What is the first device used to compact the mat and may be operated in the vibratory mode - ✔✔Screed Where should longitudinal joints be located? - ✔✔Approximately 6" or more offset from the joint in the layer below When a mat is being compacted, what is the minimum overlap between roller passes? - ✔✔6" The three basic phases in the rolling process - ✔✔Breakdown, intermediate, finish What is the #1 issue with mat laydown? - ✔✔Segregation Poor joints are a byproduct of - ✔✔Pool rolling

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