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  • A Manual for Design of Hot-Mix Asphalt with Commentary

    TRB's National Cooperative Highway Research Program (NCHRP) Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary incorporates the many advances in materials characterization and hot-mix asphalt (HMA) mix design technology developed since the conclusion of the Strategic Highway Research Program (SHRP).

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  • SECTION 401 - PLANT PRODUCTION - NYSDOT Home

    HOT MIX ASPHALT SECTION 401 - PLANT PRODUCTION 401-1 DESCRIPTION. The contractor is responsible for Quality Control (QC). QC is defined as all activities required to produce HMA that meets all specification requirements. The contractor will incorporate a Quality Control system for all plant production of hot mix asphalt (HMA) and assume

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  • New HMA Products and Trends for NJDOT - New Jersey

    fatigue resistance mixture for bridge deck overlays • Can be placed on bridge deck without . • Need an HMA mix that: – Can be placed thin at low air voids without vibration on bridge decks . (12.5 & 19mm), SHRP Sections – PCC – transverse tining, diamond grinding, no finish.

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  • 5 SEAUPG 2010 - HMA Thin Lifts for Pavement Preservation .

    HMA Thin Lifts for Pavement Preservation in Tennessee The Tennessee Program ¾5,109 Interstate Lane Miles ¾26,244 State Route LM ¾31,353 Total* * As of 2008 The Tennessee Program yHistorically, resurfacing practices involved milling the surface and replacing with 3-4" binder and 1-1/4" surface. ÆThe "Worst First" approach.

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  • Thin lift overlays | Asphalt magazine

    Thin lift asphalt overlays can be used to address functional issues, safety issues as well as maintain roadways under all traffic conditions as a pavement preservation technique. Project selection is a key issue for thin asphalt overlays. Thin overlays of structurally sound pavements can last 10 years or more.

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  • HMA Pavement Mix Type Selection Guide

    HMA Pavement Mix Type Selection Guide Introduction Background Our nation's roadway system is critical to our economy. Hot Mix Asphalt (HMA) pavements consti-tute a large part of our nation's surfaced roads. HMA pavements serve in a multitude of traffic and environ-mental conditions, demanding that the materials and

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  • HMA Mixture Design Requirements, Volumetric Requirements .

    testing for High ESAL, IL-4.75, and Stone Matrix Asphalt (SMA) Hot-Mix Asphalt (HMA) mixes during mix design verification and production. The following also defines an acceptable test strip. In addition it provides the plant requirements for hydrated lime addition systems used in the production of High ESAL, IL-4.75 and SMA mixtures.

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  • Hot Mix Asphalt Concrete Density, Bulk Specific Gravity .

    Hot Mix Asphalt Concrete Density, Bulk Specific Gravity, and Permeability John P. Zaniewski, Ph.D. Yu Yan Asphalt Technology Program Department of Civil and Environmental Engineering

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  • Chapter 11 Bonded Wearing Course - Caltrans

    What is BWC? HMA Emulsion membrane •A thin, Hot Mix Asphalt Overlay placed over a polymer modified emulsion membrane which: •seals the existing pavement •bonds the two surfaces •The roadway is open to traffic very quickly •This process is done in a single machine Chapter 11 – Bonded Wearing Course

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  • Overlay Regional Engineer Considerations Asphalt Institute

    thin asphalt overlays. A thin asphalt overlay applied to a pavement which is not structurally sound will have a short service life, no matter what type of material is used or how well it is constructed. It is critical to select the correct type of project for a thin lift overlay to ensure a long service life! Project Selection - Thin Asphalt .

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  • SECTION 337 ASPHALT CONCRETE FRICTION COURSES .

    SECTION 337 ASPHALT CONCRETE FRICTION COURSES 337-1 Description. Construct an asphalt concrete friction course. This Section specifies mixes designated as Friction Course 2 (FC-2), Friction Course 3 (FC-3), Friction Course 5 (FC-5) and Friction Course 6 (FC-6). Meet the plant and equipment requirements of Section 320, as modified herein.

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  • A Manual for Design of Hot-Mix Asphalt with Commentary

    TRB's National Cooperative Highway Research Program (NCHRP) Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary incorporates the many advances in materials characterization and hot-mix asphalt (HMA) mix design technology developed since the conclusion of the Strategic Highway Research Program (SHRP).

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  • Item 402.12820X07 - Type 12.5 F2 Superpave HMA, 80 Series .

    Item 402.12820X07 - Type 12.5 F2 Superpave HMA, 80 Series Compaction, Quantity Ranges 1, 2 . Hot Mix Asphalt (HMA) Pavements applies, including the following: DESCRIPTION: These items will be used to perform highway repairs and will enable contractors to bid on

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  • DEVELOPMENT OF MIX DESIGN CRITERIA FOR 4.75 MM .

    Past experience with thin hot mix asphalt (HMA) overlays has been positive. In Maryland, these mixes are used as part of a preventive maintenance program and have shown excellent rutting and cracking resistance. Maryland's thin HMA overlay mixes generally contain about 65 percent manufactured screenings and 35 percent natural sand.

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  • Kraton Ultra-thin HMA / WMA Overlay Study I. Overview

    Kraton Ultra-thin HMA / WMA Overlay Study I. Overview Project: Oregon Department of Transportation . 12.5 1/2 100 100 ± 6 . Hot Mix Asphalt (HMA) Using the Asphalt Pavement Analyzer (APA)." Table 11. APA Rutting Results HiMA 70-22ERH

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  • SPECIAL PROVISION HOT MIX ASPHALT Total No. Of

    GAP-GRADED HMA (Ultra Thin Bonded Wearing Course) DESCRIPTION The Ultra thin Bonded Wearing Course consists of a warm polymer modified asphalt emulsion tack coat followed immediately with an ultra-thin hot mix asphalt wearing course. The tack coat is spray applied immediately prior to the application of the wearing course to produce a

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  • 19 Spec -Section 460 Hot Mix Asphalt Pavement

    Effective with the December 2018 Letting 176 2019 Standard Specifications Section 460 Hot Mix Asphalt Pavement 460.1 Description (1) This section describes HMA mixture design, providing and maintaining a quality management program for HMA mixtures, and constructing HMA pavement.

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  • Materials Pricing - duvalasphalt

    Material prices are as seen here. Please Note: Due to the volatility of materials pricing, which are subject to change at any time for any reason, we encourage you to call us to verify pricing.

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  • Asphalt Pavement Thickness and Mix Design - Asphalt .

    Is the pavement structure (subgrade, subbase, base, and all asphalt layers) adequate to support the loads? You need to purchase our MS-23 Manual, Thickness Design of Asphalt Pavements for Heavy Wheel Loads. Is the hot mix asphalt surface stiff enough to resist deformation (ruts or indentations)?

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  • COARSE VERSUS FINE-GRADED SUPERPAVE MIXTURES: .

    Both coarse and fine-graded hot mix asphalt mixtures can be designed within the gradation control points recommended within the Superpave mix design system. However, some states have begun to specify only coarse-graded mixtures (below the restricted zone) and other states are specifying only fine-graded mixtures (above the restricted zone).

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  • Midland Asphalt Materials Inc. | NovaChip®/Ultra Thin .

    The process involves spraying a heavy layer of polymer-modified asphalt emulsion within inches of the application of the hot mix asphalt. The NovaChip®/Ultra Thin Bonded Wearing Course can be placed as thin as 0.5 inches (12.5 mm) to 1.5 inches (38 mm) thick. The emulsion cools quickly and bonds the asphalt to the pavement rapidly.

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  • Managing Density For Asphalt Pavement - apa-mi

    Static Steel‐Wheeled Rollers 4 ‐14 ton rollers applies static force • 3‐Wheel • Vibratory rollers in static mode • Lighter rollers for finish rolling • Drive wheel must face paver • "Climbs" uncompacted mix • Tiller wheel pushes mix • Drums must be smooth and clean • Water spray & .

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  • Pennsylvania's Experience with Thin Asphalt Overlays

    Pennsylvania's Experience with Thin Asphalt Overlays Mansour Solaimanian, PhD, PE . 9.5mm 12.5 9.5 100 85-100 MI HMA Ultra-Thin 12.5 9.5 4.75 100 99-100 75-95 3/4 NC Ultrathin Bonded Wearing Course 12.5 9.5 4.75 100 85-100 28-44 1/2 – 1 Mostly 5/8. 99 Practice in Other States State Term Type Sieve mm %Pass Thick-

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  • revised Paver Placed Surface Treatment - The Gorman Group

    a membrane of polymer modified asphalt emulsion. It's unique in that it is essentially a surface treatment that's made in an asphalt hot mix plant and placed with a specialized paver. In some specifications, it's called "paver placed surface treatment" or "ultra thin HMA wearing course". The open texture of the mix gives the surface

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  • Thin Overlays - Asphalt Pavement

    Thin Overlays A new generation of thin-lift asphalt overlays called Thinlays™ are a popular approach to pavement preservation because of their ability to provide improved ride quality, reduce pavement distresses, maintain surface geometrics, reduce noise levels, .

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  • Asphalt Pavement Association Of Michigan HMA Ultra .

    12.5 mm (1/2") 100 9.5 mm (3/8") 99-100 4.75 mm (#4) 75-95 . HMA Ultra Thin Fessenden zThe asphalt is about ½" below the gutter, . HMA Ultra Thin. Asphalt Pavement Association Of Michigan HMA Ultra Thin z Asphalt Pavement Association Of Michigan HMA Ultra Thin. z Asphalt Pavement Association Of Michigan Asphalt Pavement Association .

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  • 2-6 Bituminous Pavements - Connecticut

    Chapter 6 - Bituminous Pavements 2-601 Bituminous Concrete (HMA) Pavements 2-601A General Hot mix asphalt (HMA) pavement consists of coarse graded or dense graded hot mixed, hot laid, bituminous paving mixtures. HMA mixtures are placed on either a prepared gravel base .

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  • Hot Mix Asphalts 101 - New Jersey

    HMA 12.5 H 64 Surface Course 3) Binder Grade 4) Location within the payment . at the hot mix asphalt plant (i.e., rubber is wet before mixing) – Dry Process – rubber is added at the same time the asphalt and aggregate . Hot Mix Asphalts 101 .

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  • Asphalt Pavement Thickness and Mix Design - Asphalt .

    Is the pavement structure (subgrade, subbase, base, and all asphalt layers) adequate to support the loads? You need to purchase our MS-23 Manual, Thickness Design of Asphalt Pavements for Heavy Wheel Loads. Is the hot mix asphalt surface stiff enough to resist deformation (ruts or indentations)?

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  • Pennsylvania's Experience with Thin Asphalt Overlays

    Pennsylvania's Experience with Thin Asphalt Overlays Mansour Solaimanian, PhD, PE . 9.5mm 12.5 9.5 100 85-100 MI HMA Ultra-Thin 12.5 9.5 4.75 100 99-100 75-95 3/4 NC Ultrathin Bonded Wearing Course 12.5 9.5 4.75 100 85-100 28-44 1/2 – 1 Mostly 5/8. 99 Practice in Other States State Term Type Sieve mm %Pass Thick-

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  • Managing Density For Asphalt Pavement - apa-mi

    Static Steel‐Wheeled Rollers 4 ‐14 ton rollers applies static force • 3‐Wheel • Vibratory rollers in static mode • Lighter rollers for finish rolling • Drive wheel must face paver • "Climbs" uncompacted mix • Tiller wheel pushes mix • Drums must be smooth and clean • Water spray & .

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  • HMA Ultra-Thin - APAM, Asphalt Pavement Association of .

    HMA Ultra-Thin offers a simple, cost effective way to maintain roads and streets, as it protects your investment in them. A hot mix asphalt treatment designed specifically for thin lift (3/4 inch) placement, HMA Ultra-Thin was developed for structurally sound pavements that are showing signs of aging, oxidation or minor surface disintegration.

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  • SECTION 401 - PLANT PRODUCTION - NYSDOT Home

    HOT MIX ASPHALT SECTION 401 - PLANT PRODUCTION 401-1 DESCRIPTION. The contractor is responsible for Quality Control (QC). QC is defined as all activities required to produce HMA that meets all specification requirements. The contractor will incorporate a Quality Control system for all plant production of hot mix asphalt (HMA) and assume

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  • Archived - An Overview of Surface Rehabilitaion Techniques .

    A seal coat or chip seal is an application of a thin (usually less than 25 mm or 1 in thick) layer of asphalt, with or without aggregates, to a roadway surface to restore its characteristics, such as skid resistance, ride quality, and water proofing of the underlying layer. Thin hot mix asphalt surfacings, with thicknesses of 12.5 to

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  • DEVELOPMENT OF MIX DESIGN CRITERIA FOR 4.75 MM .

    Past experience with thin hot mix asphalt (HMA) overlays has been positive. In Maryland, these mixes are used as part of a preventive maintenance program and have shown excellent rutting and cracking resistance. Maryland's thin HMA overlay mixes generally contain about 65 percent manufactured screenings and 35 percent natural sand.

    Get Support
  • HMA Pavement Mix Type Selection Guide

    HMA Pavement Mix Type Selection Guide Introduction Background Our nation's roadway system is critical to our economy. Hot Mix Asphalt (HMA) pavements consti-tute a large part of our nation's surfaced roads. HMA pavements serve in a multitude of traffic and environ-mental conditions, demanding that the materials and

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  • 2016 Asphalt Pavement Design Guide - WAPA

    Aug 30, 2016 · This 2016 Asphalt Pavement Design Guide has been prepared to assist readers in understanding asphalt mix pave-ment design, construction, and rehabilitation. . . 12 5. Pavement Design Considerations . . hot mix asphalt (HMA), warm mix asphalt (WMA), and stone matrix asphalt (SMA). WMA is a type of asphalt that

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  • Superpave Volumetric Mix Design - Asphalt Pavement

    T 164, Quantitative Extraction of Asphalt Binder from Hot Mix Asphalt (HMA) T 176, Plastic Fines in Graded Aggregates and Soils by Use of the Sand Equivalent Test T 240, Effect of Heat and Air on a Moving Film of Asphalt Binder (Rolling Thin-Film Oven Test) T 283, Resistance of Compacted Hot Mix Asphalt (HMA) to Moisture-Induced Damage

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  • Evaluation of thin HMA Surfacing in NJ - Purdue Engineering

    Evaluation of Thin HMA Surfacing in NJ Objective: Determine optimum materials to meet the service needs of NJ Application Types: HMA overlays <1.5 ins. (37.5mm) Mill and fill Hot Mix Asphalt pavements Composite – HMA over PCC HMA overlay on bituminous pavement Goals: Quick application - night construction – min. lane restrictions – high

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  • ASPHALT PAVEMENTS SECTION 401

    HOT MIX ASPHALT, HMA, PAVEMENT 401.01 Description This work shall consist of one or more courses of QC/QA HMA base, intermediate, or surface mixtures constructed on prepared foundations in accordance with 105.03. 401.02 Quality Control 10 The HMA shall be supplied from a certified HMA plant in accordance with

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