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What does first number and second number in performance graded asphalt binder represent PG 64- 28 First Number is hot pavement design. Second number is cold pavement design Consensus Properties of Aggregate Coarse/fine Angularity, flat and elongated particles, clay cone Source Aggregate Properties Toughness, soundness, and deleterious materials Flat/elongated particles max to min dimension ratio >5 Determination of % Clay content for aggregate % of material finer than 4.75...

What is the inspector's job? - To ensure the pavement design as described in the contract produces a strong, reliable and durable pavement. - Acts as the eyes and ears for the owner. - To ensure the work done and equipments used meets the contracts requirements. - To reject any defective material being used. - Work closely with the contractor - Primarily concerned with quality What does the contract include? It includes the plans and specifications that must be followed. What d...

A composite material that is prepared in a hot-mix plant and used for construction of highway, parking lot, or airfield pavements capable of supporting high traffic load volumes and axle loads. asphalt cement A rock crusher in which a steel center cone rotates eccentrically to crush the material against the outside cylindrical steel wall. gyratory crushers It is a bituminous material that is produced by distillation of petroleum crude oil. asphalt cement 8/8/25, 4:04 PM Mod...

Gmb Specific gravity of compacted specimen or pavement core, including air voids Gmm 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 Temperature can't be less than 260 degrees Pub 351 Asphalt Tech Certification Program PG-58S-28 PG-64S-22 PG-64E-22 215-310 Degrees (COLD) 220-320 Degrees (Non-Hea...

What procedure is used to sample bituminous materials? GSP 10 What procedure is used to sample hot mix asphalt mixtures from full trucks, roadways, or occasionally partially loaded trucks? GSP 15 How do you take a HMA sample from a truck? Shovel off about 60% of the cone and go atleast 6 inches deep. What kind of shovel do you use to take a sample off of a truck? A square nosed shovel. What procedure governs the sampling procedures for contractor acceptance testing of HMA? ...

THE ASPHALT LOT SIZE IS? 2000 OR 4000 TONS THE INITIAL PRODUCTION LOT SIZE IS ? 2000 TONS WHO CUTS THE DENSITY CORES USED FOR VERIFICATION TESTING? THE CONTRACTOR A STANDARD LOT IS COMPOSED OF 5 SUBLOTS AND 4 CORES POR LOT? FALSE WHEN SELECTING QC DENSITY CORE LONGITUDINAL YOU SHOULD USE THE RANDOM SAMPLING SPREAD SHEET REFERING TO GENERAL STATIONING GUIDLINES ,R1 WOULD BE ------- THAN R2 CLOSER TO THE MEDIAN AND CLOSER TO THE INSIDE SHOULDER 8/8/25, 3:58 PM ASPHALT LE...

The most recycled material by tonnage is RAP newspaper RCA plastic glass RAP Asphalt emulsions are solid at room temperatures. True False False Ancient civilizations used natural asphalts. True False True Blue smoke coming from an asphalt paving mix means there was too much moisture. True False False There are no naturally occurring asphalts in the world. True False False Other uses of asphalt include roofing shingles none of the listed joint sealers/fillers ...

What is the difference between tar and asphalt cement? The bituminous materials are classified into tar and asphalt. Asphalt is produced from crude oil and has a higher softening point than tar. It is mostly used in pavement construction. Asphalt is also used as a binder material in sealing purposes due to its waterproofing nature. Tar is produced by destructive distillation of bituminous coal. It is also produced by the cracking of the petroleum vapors. Tar is also used in waterpro...

What are the two primary ingredients in asphalt mixtures? Aggregate & asphalt binder HMA Hot Mix Asphalt WMA Warm Mix Asphalt 3 Types of Asphalt Mixtures? Dense-graded Open-graded Gap-graded What's included in the total volume of an asphalt mix? Entrapped air voids Moisture Effective & absorbed binder Mineral aggregate Air Voids (Va) Total volume of small air pockets between coated aggregate SMA Stone matrix asphalt Cutback Asphalt Binder that's been modified by blen...

One of the primary goals of establishing the correct binder content is to: Provide enough film coating to bind the aggregate particles together Make sure any polymers present in the binder don't separate Make the mix rut resistant Ensure the mix is stable Provide enough film coating to bind the aggregate particles together 8/8/25, 3:50 PM Asphalt Mixtures and Mix Design Test Flashcards | Quizlet by the plant uses aggregate that is batched to the nearest 0.1 g at the plant ...

Hierarchy for solving discrepancies Standard Specs Supplemental Specs Plans Special Provisions What are the 3 A's of HMA? Asphalt Aggregates Air What does tack do? Promotes bonding between layers What does PG stand for? Performance Grade What does PG 64-22 mean? Performance Grade 64 degrees Celsius 7 day high temperature at 19 mm below surface -22 degrees Celsius one day low temp at the surface PG 58-22: what controls rutting? 58 PG 58-22: what controls cracking? -22 ...

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...

Define Neglect unintentional deviations from testing procedures or specs. Define Abuse Careless or deliberate deviations from procedures or specs. Define Breach of Trust Falsification of records or not reporting Improperties What is the length of certification? 3 years Falsification of records can be punishable by.... 10 years in prison Txdot rep shall... perform their duties in a lawfully, professionally, and ethical manner and practice responsible stewardship What types of asph...

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 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) 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 The contractor 8/8/25, 3:41 PM Asphalt Pa...

The three forms of asphalt - Asphalt cement - asphalt cutback - asphalt emulsion explain asphalt cement -a blend of hydrocarbons of different weights. as asphalt shifts to heavier weights it becomes harder and more viscous. (the adhesive) Asphalt cement + agg = asphalt concrete explain asphalt cutback made by dissolving asphalt cement in solvent. when sprayed on pavement or mixed with agg it evaporates leaving asphalt residue as binder. (used for maintenance and emulsion) cutbacks a...

Proper weight of mix for gyratory compactor Around g. Determined through the mix design process to achieve the height of 115 +/- 5mm Required amount of mix for Gmm (rice) samples? g total or grams individually for two flasks Required amount of mix for ignition samples? Depends on the mix. SP & FC 5, 9.5, 12.5 are 1500g. SP 19 is 2000g Asphalt burns off at what temp 538°C (1000°F) The furnace must be capable of what temperature 650°C (1200°F) Flasks should be calibrated a...

What is asphalt cement used for? HMA, patching What is asphalt emulsion used for? Cold mix & maintenance applications What is asphalt cutback used for? Cold mix & maintenance applications What are the properties of asphalt cement (binder)? - Adheres well to most rock - Waterproof - Fairly durable - Resistant to reaction with most acids, alkalis, and salts - Temperature sensitive What are the different layers of asphalt pavement? Surface, base, subbase, and subgrade in that or...

In terms of contracts, which of the following is the highest priority? Special Provision Copied Notes _____ are approved additions and revisions to the standards specifications Special or supplemental specifications Daily meetings held at a project site or plant location that provide a forum for the exchange of information called: Informal meetings The _________ should be held before work on a project begins to ensure agreement on the proposed schedule, methods to be used to ...

Asphalt is following type of material: A. Elastic B. Viscous C. Viscoelastic D. Plastic C. Viscoelastic How compaction density of asphalt is monitored during construction? A. Collecting samples and testing in lab B. Using nuclear density gauge C. Using infrared camera D. none of the above B. Using nuclear density gauge Which asphalt product (emulsion or cutback) is more environmentalfriendly? A. Asphalt cement B. Emulsion C. Cutback asphalt D. all of the above B. Emulsion...

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 Cons...