Asphalt Overlay Specifications

SECTION 32 01 16 ASPHALT OVERLAY 11 SCOPE OF University of Houston Master Construction Specifications Insert Project Name AE Project Number: Asphalt Overlay 3 Asphalt Overlay Specifications

Asphalt Overlay Specifications

  • SECTION 32 01 16 ASPHALT OVERLAY 11 SCOPE OF

    University of Houston Master Construction Specifications Insert Project Name AE Project Number: Asphalt Overlay 32 01 16 – 6 Revision Date: 1/30/2017 G Base course shall be allowed to cure for a minimum of 72 hours prior to asphalt surfacing 35 ASPHALT SURFACE COURSEa Thicker overlays of dense graded asphalt concrete b Fabric interlayer within the new overlay c Fibers in asphalt concrete overlay d Reinforcing steel or wire mesh within the new overlay e Low rubber content mixtures or plant mixed seals (open graded friction course) 2Fabrics in Asphalt Overlays Design, Construction, andIII Types of Thin Asphalt Overlay Treatments 10 Common Types 10 Other Available Technologies 13 IV Design Process for Thin Asphalt Overlays Including Materials and Mix Design 15 Plans 15 Specifications and Mix Design 17 Existing surface preparation 27 Cost Estimates 29 Other Items to Consider 30 V Construction of Thin Asphalt Overlays 31 MixManual for Thin Asphalt Overlays

  • Asphalt Overlay an overview | ScienceDirect Topics

    In Figure 423, an asphalt overlay with a thickness h in dimension [L] is placed on the subgrade (compacted soil underneath) and is subjected to a tire load FThe subgrade can be assumed to be a semiinfinite domain It will experience a vertical deflection which changes with time due to creep, with the creep compliance of the soil given by C(t) in [M −1 LT 2]Arizona Maricopa County Construction Specifications for AsphaltRubber Overlay Friction Course The project is located in Maricopa County, Arizona withinARTIC Specifications rubberpavements – AsphaltAsphalt overlay over asphalt pavements Asphalt overlays on CC pavements Asphalt concrete surfaces and bases that exhibit 05 – 07 Specifications for Measurement Condition survey and deflection data are used to establish sections of uniform performanceDesign of Overlay for Flexible Pavement

  • | AsphaltPro Magazine | Best Practices for Asphalt

    A conventional overlay is at least 15 inches thick, while a thin overlay is less than 15 inches thick In this section of the article, we’ll outline tips for—and best practicesThe asphalt required by these Specifications shall conform to the requirements of The Asphalt Institute for the type and grade shown below: Asphalt for Seal Coating CRS2 or CRS2P Article 23 Cover Aggregate A General Cover aggregate shall consist ofSTANDARD CONSTRUCTION SPECIFICATIONS FOROverlays (either structural or nonstructural) make up a large portion of the roadway paving done todayThe degree of surface preparation for an overlay is dependent onExisting Surface Preparation for Overlays – Pavement

  • DESIGN AND CONSTRUCTION GUIDELINES FOR FULL

    33 Pavement Design Overlay A 4 in minimum, twocourse asphalt concrete overlay is recommended: • 2 ½ in (25 mm) binder, • 1 ½ in (95mm) top Consult with the Regional Materials Engineer for the appropriate overlay materials It is recommended that, for a hot mix surface, a polymer modified asphalt binder material beMaterials for a Thin Asphalt Overlay The materials used in the asphalt mix for a thin asphalt overlay process are quite the same as a conventional paving mixture, however there are some differences between the two because of the requirement to have smaller components Learn more of the specifications on Federal Highway AdministrationAsphalt Overlay Recommendations and Specifications | AllIn Figure 423, an asphalt overlay with a thickness h in dimension [L] is placed on the subgrade (compacted soil underneath) and is subjected to a tire load FThe subgrade can be assumed to be a semiinfinite domain It will experience a vertical deflection which changes with time due to creep, with the creep compliance of the soil given by C(t) in [M −1 LT 2]Asphalt Overlay an overview | ScienceDirect Topics

  • ARTIC Specifications rubberpavements – Asphalt

    Arizona Maricopa County Construction Specifications for AsphaltRubber Overlay Friction Course The project is located in Maricopa County, Arizona withinMix(es) design, asphalt content, target gradation, and air voids meet specifications! Asphalt/aggregate mix has been checked for moisture susceptibility! Nominal maximum aggregated size is less than onehalf the overlay thickness for dense graded mixes Thin HotMix Asphalt Overlay 2 3thin hot530qxd 6/8/2003 2:15 PM Page 23 Thin HotMix Asphalt Overlay Here are five factors to consider when determining if an asphalt overlay is a good solution for your parking lot 1 Size The size of the parking lot plays a big role If a parking lot is small, the preparation work needed to perform an overlay becomes a larger portion of the overall cost This may result in removal and replacement being a5 Important Factors of an Asphalt Overlay

  • HOT MIX ASPHALT PAVEMENT DESIGN GUIDE

    A tack coat of asphalt (usually emulsified asphalt) is applied to ensure bond between the existing surface and the asphalt overlay It should be applied in an even,thin coat at a rate of application of 05 gallons per square yard with a tolerance of01 gallons per square yard Excessive tack coat can cause slippage or can flush to the surfaceFigure 3 Application of asphalt separation layer to existing concrete pavement for unbonded concrete overlay to provide an appropriate macrotexture level for bonding Furthermore, to minimize the potential for reflective cracking, preoverlay repairs may be required to address severe cracking, spalling, patches, punchouts, pumping/Design of Concrete Overlays Using Existing MethodologiesAsphalt overlay removal consists of milling as a means of removing an entire asphalt overl ay from a concrete or brick base The designer will designate the approximate existing asphalt thickness on the typical cross sections esigner should be aware that milling can dislodge or loosen The d bricks and result in construction challengesPavement Distress, Repair, and Widening INgov | The

  • Asphalt Pavement Construction Asphalt Institute

    Home » Engineering » Frequently Asked Questions (FAQs) » Asphalt Pavement Construction While there are an infinite number of questions that can be asked, we compiled a list of those questions that have been directed to us the most These FAQs are categorized into subject areas listed in the contents dropdown box below We tried Continue reading Asphalt Pavement ConstructionOUTLINE OF SPECIFICATIONS Each specification is outlined by Articles and Sections The basic Articles required for a specification are: 1 DESCRIPTION 2 MATERIALS 3 EQUIPMENT 4 CONSTRUCTION OR WORK METHODS 5 MEASUREMENT 6 PAYMENT Some Articles are not used in every Item Measurement and Payment Articles are combined when the work described is2014 Standard Specifications for Construction andMaterials for a Thin Asphalt Overlay The materials used in the asphalt mix for a thin asphalt overlay process are quite the same as a conventional paving mixture, however there are some differences between the two because of the requirement to have smaller components Learn more of the specifications on Federal Highway AdministrationAsphalt Overlay Recommendations and Specifications | All

  • 63mm Thin Asphalt Overlay (Thin Hot Mix Asphalt

    Specification features • New section 412 in Pub 408 – SUPERPAVE MIXTURE DESIGN, CONSTRUCTION OF PLANTMIXED HMA/WMA 63MM THIN ASPHALT OVERLAY COURSES • Pub 242 changes – Usage guidance in chapter 5 – Changes to addHere are five factors to consider when determining if an asphalt overlay is a good solution for your parking lot 1 Size The size of the parking lot plays a big role If a parking lot is small, the preparation work needed to perform an overlay becomes a larger portion of the overall cost This may result in removal and replacement being a5 Important Factors of an Asphalt OverlayMix(es) design, asphalt content, target gradation, and air voids meet specifications! Asphalt/aggregate mix has been checked for moisture susceptibility! Nominal maximum aggregated size is less than onehalf the overlay thickness for dense graded mixes Thin HotMix Asphalt Overlay 2 3thin hot530qxd 6/8/2003 2:15 PM Page 23 Thin HotMix Asphalt Overlay

  • Asphalt Overlay an overview | ScienceDirect Topics

    In Figure 423, an asphalt overlay with a thickness h in dimension [L] is placed on the subgrade (compacted soil underneath) and is subjected to a tire load FThe subgrade can be assumed to be a semiinfinite domain It will experience a vertical deflection which changes with time due to creep, with the creep compliance of the soil given by C(t) in [M −1 LT 2]industry has been looking into thi n asphalt overlays and their best applications on Pennsylvania roads To evaluate the performance of such mixes and develop relevant specifications, PennDOT initiated a ourf year research program with Penn Statetitled “Evalu, ation of Thin Hot Mix Asphalt Overlay”Evaluation of Thin Hot Mix Asphalt OverlayFigure 3 Application of asphalt separation layer to existing concrete pavement for unbonded concrete overlay to provide an appropriate macrotexture level for bonding Furthermore, to minimize the potential for reflective cracking, preoverlay repairs may be required to address severe cracking, spalling, patches, punchouts, pumping/Design of Concrete Overlays Using Existing Methodologies

  • MechanisticEmpirical Asphalt Overlay Thickness Design

    The placement of an asphalt overlay is the most common method used by the Texas Department of Transportation (TxDOT) to rehabilitate existing asphalt and concrete pavements The type of overlay and its required thickness are important decisions thatThin Hot Mix Asphalt Overlay Checklist 3 Materials Checks Verify that materials including asphalt binder, aggregate(s), and tack coat are from approved sources Asphalt binder is performance graded consistent with environmental and traffic factors The lift thickness should be described in the specification for the mix gradation specifiedThin Hot Mix Asphalt Overlay ChecklistAsphalt Paving Materials 21 Chapter 2 Asphalt and Asphalt Paving Materials ASPHALT DEFINED The black cementing agent known as asphalt has been used for road construction for centuries Although there are natural deposits of asphalt, or rock asphalt, most used today is produced by the oil refining industry Asphalt is a constituent of mostChapter 2 Asphalt and Asphalt Paving Materials