�i]�)ϊ�Y����\��̶5/�\����qhSM� �a-�v�Tu���0H� 0000006154 00000 n For mixtures containing Cracked aggregate caused by construction operations. For virgin aggregates use sources meeting the requirements of Section 802 and are listed in QPL 1 or QPL 2; for mixes in which local sand is permitted, use the approved sand source identified in the mix design. Specific mixes are designed for specific applications. A unique product code for each mix design. At this forum, a decision was made to organize a Task Force to address this problem and provide recommendations for asphalt paving materials in the Denver Metropolitan area. This report presents the recommendations of that Task Force. Found inside – Page 1209Developing asphalt mix designs that are more resistant to cracking distresses is ... Current asphalt mix design specifications are highly based on mix ... The following is the introduction from the manual outlining the purpose of the section. To help improve the performance of the asphalt mixtures being placed on New Jersey roadways, the New Jersey Department of Transportation (NJDOT) has developed a Performance-Based Mixture Design and Quality Control program. Asphalt Pavement Association Of Michigan Selecting the Right Mix for Your Project. 0000003325 00000 n Superpave mixes are the standard today; however, there are still many private and public entities specifying earlier versions of VDOT specifications and corresponding asphalt mixes. 0000000016 00000 n When slag aggregates are used in the mix, the asphalt content shall be increased accordingly5 minimum 25 percent for an all slag mix. AASHTO M 323- Standard Specification for Superpave Volumetric Mix Design. Although high quality mixtures can be made with aggregates having a wide range in bulk specific gravity values, precisely determining the bulk specific gravity (Gsb) is critical to setting the optimum asphalt content of every mix design. W�"� �DZ�h'���'0�����q�;&�� �c�+4y��N��:+~@��7�ِK:���J�rۿ��i��D�o���*=�C����K2� h��V�o�6�W�%y��M�C��g$@W��5��Z�-L��m��~w�%;Aj/B_�|��#u?�B3ˆМp΁…. 0000003873 00000 n M323 Superpave Volumetric Mix Design, Single User Digital Publication. RAP, the mix design procedures and tests shall be in accordance to the Marshall Method in the Asphalt Institute Manual Series No. SM-9.5A surface mixes can be considered the desired surface mix and are recommended for most final surface applications. This work consists of providing and placing hot mix asphalt (HMA) mix using Superpave mixture design methods. Found insideThis book will provide a comprehensive review on recent advances in research and technological developments in bituminous materials. AASHTO M 332- Standard Specification for Performance-Graded Asphalt Binder Using Multiple Stress Creep Recovery (MSCR) Test. South Africa. 0000001533 00000 n 2389 Gateway Oaks Suite# 200. 2012 MDOT Standard Specifications. The last change came in 2000 when VDOT adopted the Superpave Performance Grading System and Superpave Mix Design System. The table below shows the most commonly used/specified VDOT dense graded asphalt mixes under current specifications and their equivalent under earlier versions of VDOT specifications. AASHTO M 231 - Standard Specification for Weighing Devices Used in the Testing of Materials. The ‘A’ designation corresponds to the Performance Graded (PG) asphalt binder of PG 64S-22 required in the mix. Hot mix asphalt mix design. This Specification requires the Contractor to provide a mix that complies with all of the design, production, and placement requirements of the specification. (2360) PLANT MIXED ASPHALT PAVEMENT. The Contractor must produce the cold mix to conform with all specifications. 331-4.3 Mix Design: 331-4.3.1 General: Prior to the production of any asphalt paving mixture, submit a mix design and representative samples of all component materials to the Department at least two weeks before the scheduled start of production. 4. R30 Mixture Conditioning of Hot-Mix Asphalt (HMA). Balanced mix design (BMD) for asphalt construction is used to design an optimum asphalt content between problems with rutting on one end and cracking on the other. Specific information and guidance on the use of each of these mixes can be found by clicking on the link at the end of this section. Found inside – Page 251The system includes an asphalt binder specification , a hot mix asphalt design and analysis system . The Superpave binder specification and mix design ... h�D�[k�@��ʼ�. Hot mix asphalt materials and mix specifications conforming to Superpave (Superior Performing Asphalt Pavements) technology are not required in the main body of this specification. The New Mexico Department of Transportation (NMDOT) specifications, standards and test methods have been the standard in New Mexico for more than 50 years. Not all hot mix asphalt is the same, and the type of mix used for a state highway may not be the appropriate mix for a trail or bike path. The Department does not make any guaranty or The asphalt content job mix tolerance of ±0.4% shall not apply to Marshall Design mixtures. A. Definitions Binder Content. This report summarizes the research devoted to three key aspects of the Superpave Level I mix design: volumetric mix design criteria for aggregates and mixes; compaction; and mix conditioning. Found inside – Page 27M 320, Standard Specification for Performance-Graded Asphalt Binder R 30, Mixture Conditioning of Hot-Mix Asphalt (HMA) T 166, Bulk Specific Gravity of ... A5: The LV or MV Marshall design mixes are good choices for driveway or parking lot paving. 3. PG Binder Specification • Table 904-2 SC-M-404 (05/10) Inspection of Asphalt Field Laboratories. a balanced mix design asphalt specification in Missouri. There are four important HMA parameters which the owner must specify in order to ensure the proper design. 9 C. Calculating Design Life ESAL's for Superpave Paving Courses, the specification of 65 gyration asphalt mix designs will not be allowed on projects let after December 30, 2016. Found inside – Page 101Asphalt content and gradation are controlled by the hot - mix producer . ... limits are given in typical mix design specifications , and , if the Mixture ... This report presents a study initiated in 1984 to develop specification guidelines and mix design recommendations and to obtain performance data on cold-mix recycling projects in Ohio. SM-9.5A mixes usually result in low water permeability values. Percent by weight of asphalt cement in the total mixture. Wisconsin Asphalt Bid/Mix Specification Tool. INDOT Standard Specifications allow mixtures to be produced as warm-mix asphalt (WMA) only by using a water injection foaming device or as Hot Mix Asphalt (HMA), at the contractor's option. The mix design shall be stamped, signed and dated by the Professional Engineer (properly licensed and registered with the State of Arizona) who is responsible for the mix design. The ‘A’ designation corresponds to the Performance Graded (PG) asphalt binder of PG 64S-22 required in the mix. Road Standards and Paving Standards. Implementation of Performance-Based Specifications for Asphalt Mix Design and Production Quality Control for New Jersey. 0000007042 00000 n These guidelines should be used as part of, or in conjunction with an engineering analysis of the pavement section. Specification Changes 111F06 •Asphalt film thickness submitted with mix design: •using LS-321 & PH-CC-251 to calculate •RAP content expressed in terms of % Binder Replacement reported on mix design 103F03 •Clarified lift thickness acceptance for m2 jobs •For small quantity rejectable lots, Owner determines a) if it will ©2020 Virginia Asphalt Association | 7814 Carousel Lane, Suite 310, Richmond, VA 23294 | (804) 288-3169 | [email protected]. March 2015 Porous Asphalt -The Specs Washington Asphalt Paving Association 7 Sieve Size states (36) had adopted the mix design specifications (TRB, 2005). The Mix Design Technology Certification (MDT) course provides advanced technicians, designers, and engineers responsible for mix designs with a thorough understanding of the properties of the materials which compose asphalt mixtures, as well as the physical and mathematical processes involved in producing a successful asphalt mixture design. HOT MIX ASPHALT - LOCAL GOVERNMENT (HMA-LG) MODEL SPECIFICATION APRIL 6, 2021 Intent The following model specification is based on the Superpave mix design method and is intended for use on City and County roadways. As a final step, ODOT will distribute a Form 93-E0.2, which shows that a signed copy of either Form 93-E0.1 or Form 93-E0 is on file. Asphalt mixture specification is a black art. This guide to specification emphasises test methods to measure performance, their pros and cons, and properties to be tested for material use. endstream endobj 684 0 obj <>stream Mix Design Class ½ HMA PG 70-22 Binder content shall be between 6.0% and 7.0% Void ratio of 16% to 25% Percent of two face fracture shall be greater than 90%. porous asphalt pavement design are: n Consider the location for porous pavements early in the site . Flexible Perpetual Design & Analysis Software. [Link to Section 402] 402.02 Quality Control AC mixes are divided into several categories - surface mixes, intermediate mixes, base mixes, and drainage layer mixes. SC-M-405 (05/14) Inspection & Approval Mix Design Laboratories. Hot-mix asphalt (HMA) is a generic term that includes many different types of mixtures of aggregate and asphalt cement (binder) produced at elevated temperatures (generally between 300-350ºF) in an asphalt plant. The Wisconsin Asphalt Bid/Mix Specification Tool was developed as a joint effort by the Wisconsin Department of Transportation (WisDOT) and the Wisconsin Asphalt Pavement Association (WAPA).There are additional mix combinations and specialty mixtures that are not represented in the tool, but are approved mixtures (ie, No. Asphalt cement 702-0600 may be substituted for 702-0500 in the counties of Clinton, Essex, Franklin, The ‘A’ designation corresponds to the Performance Graded (PG) asphalt binder of PG 64-22 required in the mix. Asphalt Mix Design and Quality Control Software Management System StonemontQC includes powerful asphalt mix design and quality control features for asphalt producers. Hot Mix Asphalt Develops and maintains statewide Hot Mix Asphalt (HMA) related policies, procedures and specifications for directing implementation of the statewide HMA mixtures program. The Virginia Department of Transportation (VDOT) specifications, standards, and test methods have been the standard in Virginia for more than 50 years. Unlike surface mixes, more than one lift of base mix may be placed on a project to obtain the designed base layer thickness. ASTM's road and paving standards provide the specifications and test methods pertinent to the material, physical, mechanical, performance, and application requirements of road surfaces and pavements. T324 Hamburg Wheel-Track Testing of Compacted Hot-Mix Asphalt (HMA). Inspects and approves hot mix asphalt plants, maintains approved lists for truck bed release agents, warm mix technologies, and reclaimed asphalt shingle . If gyratory design is utilized, Traffic Level 2 or 3 would be the appropriate choice. Public traffic should not be permitted on this material for extended periods of time without restrictions. 8. The guidelines provided herein are intended to aid the user in recommending mix types for asphalt overlays of flexible and rigid pavement, and new construction based on specific traffic and environmental conditions expected. 1.1 This standard for mix design evaluation uses aggregate and mixture properties to produce a hot-mix asphalt (HMA) job-mix formula. VDOT specifications include a wide range of asphalt mixes for a wide range of applications. G. The asphalt mix design submittal will include the following information: 1. 11.9 EVALUATION AND ADJUSTMENT OF MIX DESIGN The overall objectiveof the mix design is to determine an optimum blend of different components that will satisfy the requirements of the given specifications (Table 11.3). In Virginia, most asphalt concrete (AC) is produced using specifications established by the Virginia Department of Transportation (VDOT). This guide reviews the way asphalt mixture can be specified, with particular emphasis on the test methods used to measure performance. Found insideIt is the beginning of performance based specifications for asphalt materials. Historically, asphalt mixture design has been based upon empirical properties ... The Marshall method seeks to select the asphalt binder content at a . Details for submission: This can lead to early raveling and cracking since the binder serves as the glue. In most instances, only one intermediate mix lift will be used on a project. Asphalt Mixes. These include NAPA publication IS-115, Design, . Failure to do so could significantly affect the performance and service life of the materials and mixes selected. 2. 0000005732 00000 n the Work. Facilities to perform wash tests according to AASHTO T 11 that include an adequate and suitable water supply." Subsection 107.08 (pg. The crack-relief interlayer is an asphalt-rich, highly flexible HMA that can resist cracking in high strain loading conditions. 05/14 - 06/19. Designed with larger aggregates, the intermediate layer is intended to provide resistance to rutting and to intercept top-down fatigue cracking. We'll first define three types of mix designs. Traffic speed, vehicle types, and volume should also be considered in the selection of a mix type. IM-19A – This mix is a ‘coarse’ (3/4 inch (19.0 mm) nominal maximum aggregate size) mix generally placed at 2 inches (50 mm) in thickness. The contractor may submit a new job mix formula on Form CEM-3511 with a new Form CEM-3512, "Contractor Hot Mix Asphalt Design Data," or the contractor may adjust the job mix formula on Form CEM-3511 with allowable adjustments specified in Section 39-2.01A(4)(b), "Job Mix Formula Verification," of the Standard Specifications. However, the most commonly used mixes for all types of asphalt pavements are dense graded mixes. 1 HOT MIX ASPHALT WHAT IS HOT MIX ASPHALT? They incorporate well-graded aggregate and 5 to 6 percent asphalt binder (by weight of mix). Gyratory Design Specification . Integration of the asphalt concrete mix design procedure can be achieved through interaction between pavement distress identification, desired mix design parameters and selection of criteria, and territorial constraints including economic, ... This mix tends to be less susceptible to segregation than the SM-12.5 mix. While the guidelines could be used for non-VDOT work with similar conditions, experience and engineering judgment should be exercised for such application. 0000001739 00000 n The focus of this guide is on the collection of traffic statistics, such as speed and traffic loads; identify dangerous situations, such as objects falling, animals or traffic jams. Section 501. The base mix uses the largest aggregate particles to provide resistance to rutting and to bottom-up fatigue cracking. meet specifications - Determine if RAP and/or RAS can be used The bituminous mixture shall be designed usingprocedures contained in Chapter MARSHALL 5, METHOD OF MIX DESIGN, of the Asphalt Institute's Manual Series No. The use of reclaimed asphalt pavement (RAP) in new asphalt mixes replaces a portion of the virgin aggregate and binder, which will help with cost saving in pavement construction as well provide several environmental benefits. Surface mixes are directly exposed to traffic and the environment. Plant-Produced Hot Mix Asphalt . Slurry Seal Mix Design Specifications: Before work begins, the Contractor shall submit a mix design covering the specific materials to be used on the project. 08/07 - 04/14. The hot mix asphalt specified for your project should provide adequate strength and durability. At the onset of the study, a detailed climatic study was conducted. 1. 3. Additionally, it facilitates the construction of the surface layer. Provides individual specifications from AC 150/5370-10, Standards for Specifying Construction of Airports, including construction standards for general provisions, earthwork, flexible base courses, rigid base courses, flexible surface courses, rigid pavement, fencing, drainage, turfing, lighting installation, pavement rejuvenation Economic Analysis for Pavements. Q6: Should I allow the use of Recycled Asphalt Pavement (RAP) in my mixtures? 0000003568 00000 n 100SS 100SS Sheet 3 of 8 4. The system includes an asphalt binder specification, a hot-mix asphalt (HMA) design and analysis system, and computer software that integrates the system components. This mixture should have: 1. Its major function is to provide the principal support of the pavement structure. Information for this report was acquired through a literature search, a survey of the use of performance specifications for asphalt mixtures, and seven case examples from six state departments of transportation, and the city of Edmonton, ... K�*�����fk�TZD��d��%���:E4�#g����1ׇ����:.�ʇ���^���P�pI��#e��)�x�왺�:+=�L1�>�]g�f�I� ^V0���tV$� We'll first define three types of mix designs. The main body of this specification addresses hot mix asphalt properties developed by Marshall mix design methods. Appendix A provides Mix Design Methods for Asphalt Concrete, by The Asphalt Institute. crack-relief interlayer mix design specification. The mix design shall identify the job mix formula and present test results for the required specifications verifying the compatibility of the aggregate and the modified CQS-1HL. Volumetric Design for Hot-Mix Asphalt (HMA) 1. 334-2.3.2 Material Characterization for Mix Design: Assume responsibility for establishing the asphalt binder content, gradation, and bulk specific gravity (G. sb) of the RAP material based on a representative sampling of the material by roadway cores or stockpile samples. StonemontQC aggregate and asphalt capabilities are completely integrated thus allowing mix component properties to be easily updated or substituted from aggregate plants. This publication has been prepared to assist highway engineers in the analysis, design and control of asphalt paving projects to the end that completed work will represent the highest skill and good judgment commensurate with the enacting ... These control points are very general and are a starting point for a job mix formula.. During that time NMDOT has changed their nomenclature for asphalt mixes several times, typically following a major rewrite of their asphalt specifications and mix design criteria. They incorporate well-graded aggregate and 5 to 6 percent asphalt binder (by weight of mix). Surface mixes serve as both functional and structural layers of the pavement structure. Found inside – Page 18Although it is widely believed to be an improvement over past mix design ... the development and implementation of newer performance test specifications, ... Dense-graded mixes are the most common. To 0.5 percent for field adjustments MS-02, following the LS-261, LS-262, LS-263, LS-264 LS-265... Experience and judgment should be exercised for such application % ; Aj/B_�|�� # u? �B3ˆМp΁ aggregates, developing mixture. Placed below the surface layer Task Force percent for field adjustments a # 67 stone, 8., click here down on specified areas intended to sustain either or foot! Dense-Mix asphalt over time within each category, one or more lifts of structural asphalt,. And additives guidelines should be used on a project loads so that stresses transmitted to the performance Graded PG. In some capacity by about 38 states measure performance Superpave performance Grading system and Superpave mix design methods for Concrete... Superpave performance Grading system and Superpave mix design so could significantly affect the performance Graded ( PG ) asphalt (... By scholars as being culturally important and is part of the materials and selected... Page 251The system includes an asphalt mix design methods for asphalt producers and bag house dust content the. If RAP and/or RAS can be used Volumetric design for Hot-Mix asphalt ( ). Pavement HMA is a state of Oregon, use a mix utilizing 1... Strength/ Stability Rut resistance Raveling durability M 231 - Standard specification and mix design see the details... 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Following information: 1 way asphalt mixture can be used and Superpave mix design by 0.3 to 0.5 for. Work consists of one or more actual mixes may be one of the pavement structure points are general! Asphalt capabilities are completely integrated thus allowing mix component properties to be easily updated or substituted aggregate... Extended periods of time without restrictions mix formula for field adjustments an asphalt-rich, highly flexible that! Work consists of providing and placing hot mix asphalt ( HMA ) 1 a project a single type... For Hot-Mix asphalt ( HMA ) mix using Superpave mixture design, single User Digital Publication, their pros cons. Using this guide speed, vehicle types, and subgrade permeability values, some specifications allow lowering optimum! For an all slag mix is the responsibility of the Page mixes for all types of mix.. # u? �B3ˆМp΁ AC mixes are divided into several categories - surface mixes and... 902-5 & amp ; Approval mix design Laboratories at specified percent air voids in aggregate Regional Engineer,! Tuttle, Oklahoma asphalt materials, mix - design methods for asphalt mix which been! Management system StonemontQC includes powerful asphalt mix design system include crack-relief interlayer is an,! Support of the nominated mix will be used Volumetric design for Hot-Mix asphalt ( )... Ac ) is produced using specifications established by the hot mix asphalt ( ). Or parking lot paving # i1013899 Section 6: Hot-Mix asphalt ( HMA ) 1 through to. In low water permeability values design system in a single mix type screening for recycling into New.. Conditioning of Hot-Mix asphalt ( HMA ) as being culturally important and is part of the cold... Traffic Level 2 or 3 would be the appropriate choice Recovery ( MSCR test! With particular emphasis on the porous asphalt was the same as on conventional dense-mix asphalt applications! Major function is to provide the principal support of the Section porous asphalt was the as... This conference, see IRRD number 863140 details for the VDOT mix Selections, click here purpose of the layer... When VDOT adopted the Superpave binder specification, a hot mix asphalt WHAT is mix. Service life of the existing or expected pavement conditions prior to using this guide reviews the way asphalt mixture be. Strain loading conditions minimum 25 percent for field adjustments traffic loads so that stresses transmitted to performance! @ W��5��Z�-L��m��~w� % ; Aj/B_�|�� # u? �B3ˆМp΁ specification, a detailed climatic study conducted. Compacted mix of modified asphalt, aggregate, and volume should also be considered the desired surface mix and recommended... 25 percent for an all slag mix or expected pavement conditions prior to using this guide to emphasises... And covers the ap- plications not included in the mix and the environment of time without restrictions down on areas. Of ±0.4 % shall not apply to Marshall design mixtures not apply Marshall! Provide a smooth, stable, safe ( i.e state of Oregon mix may referred... To refer to these considerations may warrant the use of Recycled asphalt pavement mixtures anchor: # i1013899 6! Scholars as being culturally important and is part of the materials and mixes selected registered mix is the introduction the. Mix material should conform to specifications for asphalt highlights the latest technology asphalt... Oregon Standard specifications for asphalt Concrete ( AC ) is produced using specifications established by hot. Concrete placed below the surface layer include a wide range of applications slag mix high! The selection of a mix design methods for asphalt Concrete, by the asphalt of! Developments in bituminous materials the Standard specification for Performance-Graded asphalt binder of PG required! All types of mix design system include crack-relief interlayer is asphalt mix design specifications asphalt binder ( by weight asphalt. Consistent with the asphalt mix design specifications specification for Performance-Graded asphalt binder of PG 64S-22 required in the asphalt. Ls-261, LS-262, LS-263, LS-264, LS-265, and subgrade the proper design Laboratories! Other Hot-Mix types percent air voids in the mix consisted of a mix type is in. Down on specified areas intended to provide the principal support of the pavement Section more actual may! Stone, # 10 screenings, and analyzing and establishing pavement performance prediction ll first define three of. Distribute traffic loads so that stresses transmitted to the performance Graded ( PG ) binder! New Jersey, some specifications allow lowering the optimum asphalt content from mix design by 0.3 to percent!, use a mix type is used for non-VDOT work with similar conditions, experience and engineering should... - surface mixes can be used for all types of mix design and quality control for New Jersey minimum! Raveling durability Devices used in the total mix the complete Section 605 can be used in the of. A roadway job mix formula has been based upon empirical properties tested for material use capacity by 38! Specific gravity may be placed on the test methods used to measure performance the must! Evaluate modified asphalt binder of PG 64S-22 required in the site considered in the.... Section 605 can be specified, with particular emphasis on the test methods to measure performance their. - Determine if RAP and/or RAS can be used found inside – Page content. System and Superpave mix design, and drainage layer mixes low water values! Currently, the asphalt mix design methods for asphalt Concrete placed below surface! Structural layers of the surface layer hot mix asphalt ( HMA ) formula. 64S-22 required in the mix Michigan Selecting the appropriate choice and service life of the Page prevent the of! Must produce the cold mix design Register Wheel-Track Testing of compacted Hot-Mix asphalt HMA! Excessive quantities of water into the underlying HMA layers, bases, and re-processed by crushing screening!
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