Status of Research at AMRL. AASHTO Subcommittee on Materials Haleh Azari, Ph.D. August 4, 2009
|
|
- Georgia Knight
- 5 years ago
- Views:
Transcription
1 Status of Research at AMRL AASHTO Subcommittee on Materials Haleh Azari, Ph.D. August 4, 2009
2 Outline Accomplished work Ongoing research Future projects
3 Accomplished work
4 NCHRP 9-26 Under NCHRP 9-26, AMRL has been conducting a multi-phase research project to improve estimates of precision in AASHTO test methods for various pavement materials NCHRP Reports available online from previous phases of the study: Phase 1, Phase 2, Phase 3, Phase 4, Phase 5,
5 Ongoing Projects
6 NCHRP 9-26 (A) Interlaboratory Studies and Data Mining to Collect Data for the Preparation of Precision Statements Develop, verify, or update precision estimates for several AASHTO test methods selected by AASHTO Highway Subcommittee on Materials (HSOM) on broad range of highway materials including soil, aggregate, asphalt binder, asphalt mixture, hydraulic cement, and hydraulic cement concrete
7 NCHRP 9-26A to Present Prepared precision statements for 11 test methods: Divided into 7 tasks Combination of interlaboratory studies and data mining
8 Tasks 1: Prepare precision statements using AMRL and CCRL Proficiency Data Prepared precision statements for: T104 (sulfate soundness) T22 (compressive strength), T154 (time of setting), and T186 (early stiffening) T105 Three reports including the proposed precision statements for the 5 test methods are completed and will soon be available online
9 Task 2: P & B for AASHTO T148, Measuring the Length of Drilled Concrete Cores A round robin study was conducted Six cores, 4 and 6 in diameter and 6 to 12 in height were obtained from LTTP Data collected from the cores carried to 7 state and private laboratories in East coast (MD, PA, DE, NJ,VA and NC Precision estimates were developed and report is being prepared
10 Task 3: P & B for AASHTO T180, Moisture- Density Relations of Soil Conducted an ILS and examined PSP data 4 fine and coarse blends suitable for base and subbase were prepared and shipped to 35 participating labs Each lab received 12 boxes 3 replicates * 4 blends Data received from 28 laboratories Determined precision estimates for methods B and D of T180 The report is being reviewed by the panel
11 Task 4: P & B for AASHTO T 265, Laboratory Determination of Moisture Content of Soils Conducted an ILS using the same 4 soil-aggregate blends as in T180 ILS
12 AASHTO T 265 ILS A total of 1440 samples were prepared and shipped to 40 laboratories. Each laboratory received 36 samples 3 replicates * 4 blends * 3 moisture contents =36 Samples were prepared at optimum, 2% below, and 2% above the optimum moisture content of blends. P &B were determined from the results obtained from 32 labs A report of the study is being prepared
13 Task 5: P & B for AASHTO T267, Determination of Organic Content in Soils by Loss on Ignition Conducted an ILS involving 12 organic-soil blends: 3 types of soil (clay, silt, sand) 4 different % of fine grits of walnut shells (0%, 2%, 5%, 8%) A total of 1080 samples were prepared and shipped to 30 labs Each lab received thirsty-six 500-g samples : 3 soil * 3 replicates * 4 levels of organic content =36 Precision estimates prepared based on data from 25 laboratories A report of the study is being prepared
14 Task 6: P & B for AASHTO T 283, Resistance of Compacted Asphalt Mixtures to Moisture-Induced Damage Conducted an ILS Two mixtures with known low and high levels of moisture susceptibility were selected Sandstone aggregate from MD as moisture susceptible Limestone mixture from PA as moisture resistant
15 AASHTO T 283 ILS 60 labs received materials and instructions to compact, condition, and test TSR specimens 30 labs received materials for 4 Marshall 30 labs received materials for 6 Superpave Gyratory Two sets of materials were distributed to each lab: Limestone aggregate from PA and PG asphalt Sandstone aggregate from MD and PG asphalt For both limestone and sandstone mixtures 20 out of 30 laboratories sent gyratory results 15 out of 30 laboratories sent Marshall results
16 Conclusions of T283 ILS Precision estimates developed Report is being prepared Very large within- and betweenlaboratory standard deviations (acceptable difference between results of 2 laboratories is 27%) Very laborious test; not many laboratories commit the time Not enough control over the parameters of the test
17 Task 7: P & B for AASHTO T242 Frictional Properties of Paved Surfaces Using a Full- Scale Tire Precision estimates for T242 were prepared based on Texas Transportation Institute (TTI) and Transportation Research Center (TRC) friction data Data included 7 years of arrival and departure friction values from Visiting Friction Measuring units of 24 state DOTs Report of the study is being reviewed by the panel
18 AMRL Research Laboratory
19 Special Projects Building at NIST, 1963
20
21
22 Laboratory Equipment With the support of NCHRP 9-26 panel, AMRL purchased a complete set of equipment specific for asphalt mixture performance testing NCHRP equipment were installed in laboratory spaces in March 09 Asphalt Mixture Performance Tester (AMPT), Environmental Chamber, Servopac gyratory compactor, circular saw & core drill Supplies: ovens, mixer, scales, sieve shaker, Bulk and max specific gravity equipment, Coredry A research technician was hired in March 4 years of experience working in asphalt lab at VTRC
23 Environmental Chamber and AMPT
24 Shelby Oven and Servopac Gyratory Compactor
25 Aggregate Processing Lab
26 Mixture Processing Lab
27 NCHRP 9-26A- Appropriate Conditioning Time for Performance Testing of Asphalt Mixtures with Absorptive Aggregate During conditioning period, two processes occur: 1) absorption of asphalt into pores of aggregates 2) stiffening of asphalt In Phase 4 of the study, the effect of absorption on volumetric properties of mixtures with absorptive aggregate examined More absorption into pores of aggregate leaves smaller film of asphalt, which might be more vulnerable to stiffening Effect of conditioning time on stiffening of mastic and mechanical properties of mixtures with absorptive aggregate is being investigated
28 Tests Utilized in the Study X-ray microtomography to determine the change in asphalt (mastic) thickness with conditioning duration X-ray diffraction (XRD) to investigate the change in crystalline structure of asphaltenes in mixtures conditioned for various durations Nono-indentation to determine and compare hardness and elastic modulus of mastic in mixture conditioned for various durations Dynamic modulus and flow number test using AMPT
29 X-Ray Microtomography Allows determination of mastic thickness after conditioning for different durations Resolution of 3 micron/pixel Can monitor thickness above voxel size
30 Evaluating Change in Mastic Film Thickness using X-ray microtomography Absorptive Aggregate Non-Absorptive Aggregate
31 Average Film Thickness: Non-Absorptive Film Thickness (Pixels) Measured Calculated hr 2hr 4hr
32 Nano-Indentation Elastic modulus and hardness of asphalt mastic can be compared after various conditioning periods One testing cycle consists of loading segment, dwell time (30 s), and unloading segment Several peak loads and loading rates can be examined Load and displacement resolution of the indenter are 1nN (NanoNewton) and 0.01 nm (nanometer)
33 X-Ray Diffraction (XRD) Change in X-ray pattern and peaks indicate the deterioration of crystalline structure of asphaltene due to aging Can determine how fast the crystalline structure deteriorate Change in crystalline parameters relates to change in unit weight of asphaltene
34 Performance Testing using AMPT Conducting dynamic modulus and flow number test using AMPT Change in fatigue and permanent deformation resistance of the mixture with change in short-term conditioning time is being explored
35 Dynamic Modulus Results at 20 C, Non-Absorptive Aggregate
36 NCHRP Hydraulic Cement Composition Analysis and Performance Prediction A joint AMRL and NIST Project Using advanced statistical data exploration methods, Performance prediction models (heat of hydration, sulfate resistance, setting times, strength gain ) are being developed by comparison of CCRL performance data to XRD determined phase compositions
37 NCHRP Hydraulic Cement Composition Analysis and Performance Prediction Bogue bias is being determined using Bogue compositions calculated using CCRL oxide test data and XRD-determined compositions Developed models will be proposed to be incorporated into related AASHTO standards CaO C 3 S SiO C 2 S Al 2 O C = 3 A Fe 2 O C 4 AF SO CS CO CC
38 NCHRP Development of a Test Method for Optical Sizing and Roundness Determination of Glass Beads Utilized in Traffic Markings A joint AMRL and NIST Project Designed and conducted an ILS Prepared standard samples of three types of glass beads Sent 9 samples (3 types* 3 replicates) to each of 30 participating laboratories to measure size distribution and roundness of the glass beads 15 laboratories conducted measurements using traditional sieve and roundometer (ASTM C1155 and C1218) 10 laboratories utilized computerized optical methods Accuracy and precision of the methods were evaluated
39 NCHRP Characterization of the Beads by NIST NIST evaluated the parameters of the computerized optical methods via analysis of X-ray images of glass bead samples One sample- sprinkled glass beads on contact paper then rolled into a tube
40 Non-round 107 Round
41 Roundness Fraction of Glass Beads as a Function of the Cutoff Value Roundness parameters W/L3D T/L3D T/W3D W/L2D Xcmin / L(2D) SPHT2D SPHT3D 20 % line III (P) Cutoff value
42 Future Research Projects
43 NCHRP Improved Test Methods for Specific Gravity and Absorption of Coarse and Fine Aggregate A joint NCAT, AMRL, and NIST project NCAT has evaluated the available tests 1 test method for each fine and coarse aggregate will be selected in Sept. AMRL will prepare the experimental plan for the ruggedness study of the selected tests AMRL, NIST, and NCAT will each conduct ruggedness testing in their own labs Impacts of changes to test methods on HMA mix design and PCC proportioning will be determined
44 NCHRP 20-7 (272) Rheological Characterization of Flow Table Reference Material A joint AMRL and NIST Project awarded in June 09 Production of flow table reference material (mixture of silica powder and oil) is empirical and is based on trial and error Flow values provided by the table are different from one batch to another Objectives are to characterize the reference material using fundamental measurement techniques and to suggest a more efficient method for its production
45 NCHRP 20-7 (272) Rheological Characterization of Flow Table Reference Material viscosity of oil, PSD of powder, and rheological properties (yield stress and plastic viscosity) of the mixture will be characterized using modern methods of measurements Impact on the rheological properties from changes in the oil viscosity and the PSD of the powder is being determined A methodology to produce the reference material more efficiently and measuring the properties without using the flow table is being developed
46 Precision and Bias Studies The precision and bias studies of the following test methods requested by 9-26 panel: Multiple Stress Creep and Recovery (MSCR) test (AASHTO TP 70, ASTM D7405) Hamburg test (AASHTO T 324) for permanent deformation and moisture damage The next set of requirements for precision and bias statements by SCOM
47 Studies Requested by 9-26 Panel Substitution of mercury devices with the alternative devises in AASHTO test methods Investigate the effect of using alternative temperature and pressure measuring devices on the precision and accuracy of the methods using mercury devices. Investigate the calibration methods for the alternative devices. Conduct a ruggedness study of AASHTO T 312 Development of a database for long-term storage of and access to field data from projects built with WMA, high RAP content mixes, modified mixes, etc.
48 Research in Support of Mix and Aggregate FHWA ETG Initiatives Establish specification criterion for permanent deformation using the Flow Number (Fn) Test Conducted with the AMPT equipment Prior to conduct of FHWA Pool fund study for implementation of AMPT, test criteria and values of test parameters need to be established Conduct of ruggedness study for measurement of E* with the indirect tensile test in support of Dr. Richard Kim work in NCSU.
Asphalt Performance Testing
Asphalt Performance Testing National Asphalt Pavement Association 56 th Annual Meeting February 2011 Peter J. Stephanos, P.E. Director, Office of Pavement Technology Federal Highway Administration 1 Why
More informationOverview. Mix Design with High RAP Contents SEAUPG 2010 ANNUAL CONFERENCE OKLAHOMA CITY, OK. December 7, 2010
Overview High RAP Content Mix Design Southeast Asphalt User Producer Group OKC, Status of NCHRP 9 46 Preliminary Recommendations High RAP Mixes on the NCAT Test Track Mix Design with High RAP Contents
More informationAsphalt Mixture & Binder Expert Task Groups Update. John Bukowski, Deputy Director Office of Pavement Technology
Asphalt Mixture & Binder Expert Task Groups Update John Bukowski, Deputy Director Office of Pavement Technology 1 Mix ETG - Key Activities Objective: To provide a forum for the discussion of ongoing asphalt
More informationUpdate FHWA Asphalt Program. John Bukowski Asphalt Team Leader Office of Pavement Technology
Update FHWA Asphalt Program John Bukowski Asphalt Team Leader Office of Pavement Technology 1 Program Focus Areas Pavement Design and Analysis Materials and Construction Technology Pavement Management
More informationHaleh Azari, Ph.D. AASHTO Advanced Pavement Research Laboratory (AAPRL)
Haleh Azari, Ph.D. AASHTO Advanced Pavement Research Laboratory (AAPRL) 89th Annual Meeting of the North Eastern States Materials Engineers Association Portsmouth, NH October 21-23, 2013 1 Improvement
More informationFHWA-Central Federal Lands Highway Division
in Denver, Colorado, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies established
More informationMaterial Test Framework for Warm Mix Asphalt Trials
Material Test Framework for Warm Mix Asphalt Trials A number of new processes have been developed to allow asphalt mixtures to be mixed and compacted at lower temperatures. These processes tend to reduce
More informationFHWA-Western Federal Lands Highway Division
in Vancouver, Washington, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies
More informationAI turns 90 in SEAUPG CONFERENCE-BIRMINGHAM, ALABAMA. Asphalt Mixture & Binder Expert Task Groups Update. New AI Products.
AI turns 9 in 29 Greetings from Asphalt Institute Headquarters 2696 Research Park Drive Lexington, KY The Asphalt Institute is an international association of 96 petroleum asphalt producers, manufacturers
More informationAsphalt Mixture Performance Tester
Asphalt Mixture Performance Tester Ramon Bonaquist, P.E. Chief Operating Officer Topics Development Implementation Status Uses AMPT Resources What is the AMPT? Machine specifically for asphalt concrete
More informationPERFROMANCE EVALUATION OF ASPHALT PAVEMENT MIXES IN IDAHO CONTAINING HIGH PERCENTAGES FOR RECYCLED ASPHALT PAVEMENT (RAP)
PERFROMANCE EVALUATION OF ASPHALT PAVEMENT MIXES IN IDAHO CONTAINING HIGH PERCENTAGES FOR RECYCLED ASPHALT PAVEMENT (RAP) Haifang Wen, PhD, PE Kun Zhang, Graduate Student Washington State University Fouad
More informationAsphalt Issues Update Mixture & Binder Expert Task Groups. John Bukowski Asphalt Team Leader Office of Pavement Technology
Asphalt Issues Update Mixture & Binder Expert Task Groups John Bukowski Asphalt Team Leader Office of Pavement Technology 1 Asphalt Mix ETG & Binder ETG Objective: To provide a forum for the discussion
More informationPRI Asphalt Technologies, Inc.
in Tampa, Florida, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies established
More informationAPPENDIX A DRAFT PERFORMANCE-BASED MIX DESIGN PROCEDURE FOR POROUS FRICTION COURSE
APPENDIX A DRAFT PERFORMANCE-BASED MIX DESIGN PROCEDURE FOR POROUS FRICTION COURSE Standard Practice for Permeable Friction Course (PFC) Mix Design AASHTO Designation: 1. SCOPE 1.1 This standard covers
More informationSUPERPAVE. SUperior PERforming Asphalt PAVEments. History of Hveem Mix Design
SUPERPAVE SUperior PERforming Asphalt PAVEments History of Hveem Mix Design Hveem mix design was created by Francis Hveem in the 1920 s Basic premise of the design methodology is to coat each aggregate
More informationForeword... iii Table of Contents...v List of Figures...vii List of Tables...viii. Chapter 1 : Background...1
Foreword... iii Table of Contents...v List of Figures...vii List of Tables...viii Chapter 1 : Background...1 Introduction...1 Asphalt Mixtures... 2 Asphalt Binder Behavior... 2 Mineral Aggregate Behavior...
More informationROARING FORK & EAGLE VALLEY (RFEV) SECTION 4 ASPHALT MIXTURE REQUIRMENTS
ROARING FORK & EAGLE VALLEY (RFEV) SECTION 4 ASPHALT MIXTURE REQUIRMENTS DEFINITION OF TERMS Wherever the following abbreviations are used in the specifications or other Contract documents, the intent
More informationEVALUATION OF INFRARED IGNITION FURNACE FOR DETERMINATION OF ASPHALT CONTENT
EVALUATION OF INFRARED IGNITION FURNACE FOR DETERMINATION OF ASPHALT CONTENT Graham C. Hurley Research Engineer National Center for Asphalt Technology 277 Technology Park Auburn, AL 36832 Phone: (334)
More informationAsphalt ETG Update. Technical Discussion & Input. Asphalt Expert Task Groups. Asphalt Binder ETG Activities. MSCR Implementation Efforts
SEAUPG ANNUAL MEETING SESSION VII-ASPHALT BINDERS NOVEMBER 15, 2012 Asphalt Expert Task Groups Provide a forum for Government, Industry, and Academia in the discussion of ongoing asphalt binder and mixture
More informationClassroom Instructors: Mitch Forst (MF), Larry Shively (LS), Cliff Ursich (CU), Dave Powers (DP).
FLEXIBLE PAVEMENTS OF OHIO 2015 COMPREHENSIVE ASPHALT MIX DESIGN SCHOOL February 9-13, 2015 Columbus, Ohio ODOT Office of Materials Management, 1600 W. Broad St. Classroom Instructors: Mitch Forst (MF),
More informationSUPERPAVE. SUperior PERforming Asphalt PAVEments. History of Hveem Mix Design
SUPERPAVE SUperior PERforming Asphalt PAVEments History of Hveem Mix Design Hveem mix design was created by Francis Hveem in the 1920 s Basic premise of the design methodology is to coat each aggregate
More informationUpdate on WMA Lab Foaming Research. Ala R. Abbas, Ph.D. Ayman W. Ali, M.Sc. Department of Civil Engineering The University of Akron
Update on WMA Lab Foaming Research Ala R. Abbas, Ph.D. Ayman W. Ali, M.Sc. Department of Civil Engineering The University of Akron 1 Outline Acknowledgment Background Objectives of the Study Material Description
More informationOKLAHOMA DEPARTMENT OF TRANSPORTATION SPECIAL PROVISIONS FOR PLANT MIX BITUMINOUS BASES AND SURFACES
708-3(a-g) 99 OKLAHOMA DEPARTMENT OF TRANSPORTATION SPECIAL PROVISIONS FOR PLANT MIX BITUMINOUS BASES AND SURFACES These Special Provisions revise, amend and where in conflict, supersede applicable sections
More informationUPTiM Unified Performance Tests using incremental Method
UPTiM Unified Performance Tests using incremental Method (Practical Tests for Practitioners) By: Dr. Haleh Azari, President And Ala Mohseni, Ph.D., P.E. Pavement Systems LLC OKDOT Webinar January 25, 2016
More informationNCHRP UPDATE 2008 SEAUPG CONFERENCE-BIRMINGHAM, ALABAMA. Our Visit. Special Thanks. 9-22: Performance Related Specification for HMA
Our Visit NCHRP UPDATE Southeastern Asphalt User/Producer Group November 17 0, 008 Birmingham, Alabama HMA Quality Assurance HMA Mixture Design Warm Mix Asphalt (WMA) Mixture & Structural Design Other
More informationPAVETEX Engineering, LLC
in El Paso, Texas, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies established
More information5- Superpave. Asphalt Concrete Mix Design
5- Superpave Asphalt Concrete Mix Design 1 Superpave Volumetric Mix Design Goals Compaction method which simulates field Accommodates large size aggregates Measure of compactibility Able to use in field
More informationEVALUATION OF INFRARED IGNITION FURNACE FOR DETERMINATION OF ASPHALT CONTENT
NCAT Report 02-05 EVALUATION OF INFRARED IGNITION FURNACE FOR DETERMINATION OF ASPHALT CONTENT By Brian D. Prowell June 2002 277 Technology Parkway Auburn, AL 36830 EVALUATION OF INFRARED IGNITION FURNACE
More informationAppendix C Training Materials for the Draft Appendix to AASHTO R 35
Appendix C Training Materials for the Draft Appendix to AASHTO R 35 Instructor Guide Preface NCHRP Project 9-43 Mix Design Practices for Warm Mix Asphalt Instructor Guide Appendix to AASHTO R35 Special
More informationPutting the Puzzle Together On Our National Asphalt RD&T Activities
Putting the Puzzle Together On Our National Asphalt RD&T Activities Thomas Harman Materials & Construction Team Leader, R&D Federal Highway Administration www.tfhrc.gov National Cooperative Highway Research
More informationDevelopment and Implementation of the Superpave System in the USA And its Relationship to Pavement Design
Development and Implementation of the Superpave System in the USA And its Relationship to Pavement Design John A. D Angelo D Angelo Consulting, LLC johndangelo@dangeloconsultingllc.com 1 Superpave The
More informationINDIANA. So how do you make hot mix asphalt? Basics of HMA Pavement Performance. Basics of a Good Road Hot Mix Asphalt Pavement Materials Selection
Basics of a Good Road Hot Mix Asphalt Pavement Materials Selection Presented at 2004 Road School By M. Dudley Bonte March 10, 2004 Basics of HMA Pavement Performance Appropriate Specifications Adequate
More informationMICHIGAN DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION FOR SUPERPAVE HMA MIXTURES. C&T:CJB 1 of 5 C&T:APPR:SJP:DBP: FHWA:APPR:
MICHIGAN DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION FOR SUPERPAVE HMA MIXTURES C&T:CJB 1 of 5 C&T:APPR:SJP:DBP:10-03-07 FHWA:APPR:10-05-07 a. Description. This work shall consist of furnishing a HMA
More informationRecovery of Asphalt from Solution Using the Rotary Evaporator. Materials Finer than 75 µm (No. 200) Sieve in Mineral Aggregates by Washing
Recommend Approval: Assistant Division Chief Date Division Chief Date Approved: Director Date SCOPE: Maryland Department of Transportation State Highway Administration Office of Materials Technology MARYLAND
More informationImproving Hot Mix Asphalt Performance with SUPERPAVE
Improving Hot Mix Asphalt Performance with SUPERPAVE A Driving Force In Asphalt SUPERPAVE Update for Intevep April 8, 2002 Asphalt Mixture Behavior SP Permanent Deformation Fatigue Cracking Low Temperature
More information12/9/14. HMA Mix Design. Asphalt Mix Design. Volumetrics. HMA Mix Characteristics
Construction of Quality Hot Mix Asphalt Pavements - 1 Day Course HMA Mix Design Smooth Quite Ride Asphalt Mix Design Greg Harder, P.E. Asphalt Institute Regional Engineer Tully, NY Strength/ Stability
More informationAppendix E NCHRP Project Experimental Plans, Results, and Analyses
Appendix E NCHRP Project 09-43 Experimental Plans, Results, and Analyses E-1 Table of Contents Table of Contents... 3 List of Figures... 3 List of Tables... 6 E1. Introduction... 9 E2. Sample Reheating
More informationASPHALT BINDER AND EMULSIONS
AASHTO Accreditation Policy on PSP Participation How to use these tables: Each test that is included in a PSP will be designated with a T. If there is a special rule for participation that is other than
More informationDESIGN OF BITUMINOUS MIXTURES
Test Procedure for DESIGN OF BITUMINOUS MIXTURES TxDOT Designation: Tex-204-F Effective Date: August 2016 1. SCOPE 1.1 Use the methods in this procedure to determine the proper proportions of approved
More informationSPECIAL SPECIFICATION 3032 Reflective Crack Relief Interlayer (RCRI)
2004 Specifications CSJ 0197-02-097 SPECIAL SPECIFICATION 3032 Reflective Crack Relief Interlayer (RCRI) 1. Description. Produce and place a Reflective Crack Relief Bituminous Interlayer (RCRI) in one
More informationSPECIAL SPECIFICATION 3017 Reflective Crack Relief Interlayer (RCRI)
2004 Specifications CSJ 0027-12-130 SPECIAL SPECIFICATION 3017 Reflective Crack Relief Interlayer (RCRI) 1. Description. Produce and place a Reflective Crack Relief Bituminous Interlayer (RCRI) in one
More informationASPHALT BINDER AND EMULSIONS
AASHTO Accreditation Policy on PSP Participation How to use these tables: Each test that is included in a PSP will be designated with a T. If there is a special rule for participation that is other than
More informationAsphalt Mix Design Improvements at Toronto Pearson. September 12, 2013
Asphalt Mix Design Improvements at Toronto Pearson September 12, 2013 Toronto Pearson: Current Airfield Map Toronto Pearson Airport Canada s Largest Airport 2012 Passenger Volume: 34.9 Million PAX. Ranking
More informationNational Cooperative Highway Research Program
National Cooperative Highway Research Program NCHRP SUPERPAVE RESEARCH Since 1993, NCHRP has funded 14 research projects intended to facilitate adoption of the Superpave method, enhance its features, or
More information2501 PART V SECTION 2501 PART V
SECTION 2501 PART V 2501.1 GENERAL In order to properly monitor materials on a project, follow all applicable procedures as outlined in the KDOT Construction Manual, Part V. This includes, but is not limited
More informationDIVISION 2500 MISCELLANEOUS METHODS OF TEST
TABLE OF CONTENTS DIVISION 2500 MISCELLANEOUS METHODS OF TEST SECTION 2501 PART V... 2500-1 PAGE i SECTION 2501 PART V 2501.1 GENERAL In order to properly monitor materials on a project, follow all applicable
More informationMoving Towards Balanced Mix Design for Asphalt Mixtures
Moving Towards Balanced Mix Design for Asphalt Mixtures What is Balanced Mix Design? In September 2015, the FHWA Expert Task Group on Mixtures and Construction formed a Balanced Mix Design Task Force.
More informationStandard Testing & Engineering, LLC
Standard Testing & Engineering, LLC dba Standard Testing & Engineering Company in Oklahoma City, Oklahoma, USA has demonstrated proficiency for the testing of construction materials and has conformed to
More informationSCOPE OF ACCREDITATION TO ISO/IEC 17025:2005
SCOPE OF ACCREDITATION TO ISO/IEC 17025:2005 TOLUNAY-WONG ENGINEERS, INC 10710 Sam Houston Parkway West, Suite 100 Houston, TX 77031 Patricia Hodgkins Phone: 504 202 7541 Valid To: February 29, 2020 Certificate
More informationMaterials for Civil and Construction Engineers
Materials for Civil and Construction Engineers CHAPTER 9 Asphalt Binders and Asphalt Mixtures Bituminous Materials Asphalt Natural or Refined from petroleum oil Tar Asphalt Cement Cutback Emulsion 2 Source
More informationFrom: Samaniego, Eric E@DOT Date: Tue, Jul 1, 2014 at 8:38 AM Subject: FW: FW: City of Los Angeles 2014 QAP To: "ray.solomon@lacity.org" Cc: "Kumar,
More informationNational Superpave Status Present & Future
National Superpave Status Present & Future John R. Bukowski Federal Highway Administration Northeast Asphalt User/Producer Group October 23, 2003 US Department of Transportation Federal Highway Administration
More informationEffects of RAP in HMA: Lab Study. Jo Sias Daniel Asst. Professor
Effects of RAP in HMA: Lab Study Jo Sias Daniel Asst. Professor Purpose of Research Determine effect on asphalt concrete from substitution of RAP for virgin aggregate and binder Achieve through evaluation
More informationSuperpave Program Project Status Report
As of February 21, 2002 Superpave Program Project Status Report BACKGROUND The TRB Superpave Support Team has developed the following status report of all Superpave-related projects, their major objectives,
More informationFlood Testing Laboratories, Inc.
in Chicago, Illinois, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies established
More informationFHWA Research and Equipment Update
FHWA Research and Equipment Update ALF Test Site Final Test Matrix AZ CRM ---- 0-22 PG 70-22 Control Air Blown SBS TX TBCR T-P PG 70-22 PG SBS Air + 70-2264-40 Blown Fibers SBS T-P 1 2 3 4 5 6 7 8 9 10
More informationKANSAS DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION TO THE STANDARD SPECIFICATIONS, EDITION 2007
Sheet 1 of 6 KANSAS DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION TO THE STANDARD SPECIFICATIONS, EDITION 2007 Delete SECTION 2501 and replace with the following: SECTION 2501 PART V 2501.1 GENERAL In
More informationTerracon Consultants, Inc.
in College Station, Texas, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies
More informationFindings in WMA Project (SD ) Session C, Technical Session I
Findings in WMA Project (SD2008-03) Session C, Technical Session I Elie Y. Hajj, Ph.D. Assistant Professor Western Regional Superpave Center Department of Civil and Env. Engineering University of Nevada,
More informationSeattle Public Utilities Materials Laboratory
in Seattle, Washington, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies
More informationBinder and Mixture ETG Update
Binder and Mixture ETG Update 1 2 High Temperature Binder Criteria Study Refine the Multi-Stress Creep and Recovery Test Evaluate multiple binders Evaluate binder and mix properties to develop specification
More informationA Laboratory Study of the Effects of Compaction on the Volumetric and Rutting Properties of CRM Asphalt Mixtures
A Laboratory Study of the Effects of Compaction on the Volumetric and Rutting Properties of CRM Asphalt Mixtures Soon-Jae Lee Ph.D. Graduate Student Department of Civil Engineering Clemson University Clemson,
More informationNCHRP 9-43 Mix Design Practices for Warm Mix Asphalt. Ramon Bonaquist, P.E. Chief Operating Officer Advanced Asphalt Technologies, LLC
NCHRP 9-43 Mix Design Practices for Warm Mix Asphalt Ramon Bonaquist, P.E. Chief Operating Officer Advanced Asphalt Technologies, LLC Outline Objective and Approach Major Conclusions and Products Proposed
More informationDIVISION 2500 MISCELLANEOUS METHODS OF TEST
TABLE OF CONTENTS DIVISION 2500 MISCELLANEOUS METHODS OF TEST SECTION 2501 PART V... 2500-1 PAGE i SECTION 2501 PART V 2501.1 GENERAL In order to properly monitor materials on a project, follow all applicable
More informationDEVELOPMENT OF A MIXTURE DESIGN PROCEDURE FOR STONE MATRIX ASPHALT (SMA)
NCAT Report 97-03 DEVELOPMENT OF A MIXTURE DESIGN PROCEDURE FOR STONE MATRIX ASPHALT (SMA) By E.R. Brown John E. Haddock Rajib B. Mallick Todd A. Lynn March 1997 277 Technology Parkway Auburn, AL 36830
More informationSuperpave5: Constructing Asphalt Pavement with Road Air Voids Equal to Design Air Voids
Superpave5: Constructing Asphalt Pavement with Road Air Voids Equal to Design Air Voids Webinar being sponsored by; AFH60, Asphalt Pavement Construction and Reconstruction Lee Gallivan, Chair 1 Today s
More informationMix Design Issues for. In-Place Recycling Products
CIR Definition Mix Design Issues for Cold in-place recycling (CIR) is the on-site recycling process to a typical treatment depth of 3 to 5 inches, using a train of equipment (tanker trucks, milling machines,
More informationNCHRP UPDATE. Northeast Asphalt User/Producer Group. Burlington VT 20 October 2005
NCHRP UPDATE Northeast Asphalt User/Producer Group Burlington VT 20 October 2005 1 SIMPLE PERFORMANCE TESTS (SPTs) FOR HMA MIX DESIGN 2 9-19: Superpave Support and Performance Models Management, SPTs for
More informationThomas Bennert, Ph.D. Rutgers University Center for Advanced Infrastructure and Transportation (CAIT)
Thomas Bennert, Ph.D. Rutgers University Center for Advanced Infrastructure and Transportation (CAIT) NJDOT developed PRS using the Asphalt Pavement Analyzer (AASHTO T340) and Overlay Tester (NJDOT B-10)
More informationEvaluation of Warm Mix Asphalt Technologies
NTPEP Committee Work Plan for Evaluation of Warm Mix Asphalt Technologies NTPEP Designation: WMA-01-16 National Transportation Product Evaluation Program 444 North Capitol Street N.W., Suite 249 Washington,
More informationEffects of Asphalt Binder Grade on the Performance of Rhode Island Hot-Mix Asphalt
Effects of Asphalt Binder Grade on the Performance of Rhode Island Hot-Mix Asphalt K. Wayne Lee Department of Civil & Environmental Engineering, University of Rhode Island, Kingston, RI,USA Satish Kumar
More informationUpdate on PennDOT Bulletin 27
Update on PennDOT Bulletin 27 2019 PennDOT/NECEPT Bituminous Plant Technician Annual Update/Refresher Course Update on PennDOT Bulletin 27 Outline AASHTO Standards, Significant Changes Update on PennDOT
More informationSCOPE OF ACCREDITATION TO ISO/IEC 17025:2005
SCOPE OF ACCREDITATION TO ISO/IEC 17025:2005 PROFESSIONAL SERVICE INDUSTRIES, INC. PORTLAND, OREGON DIVISION 6032 N Cutter Circle, Suite #480 Portland, OR 97217 Joseph A. Morrissey, PE Phone: 503 289 1778
More informationNOTES TO THE SPECIFICATION FOR ASPHALTIC CONCRETE
TNZ M/10 Notes: 2005 1. SCOPE NOTES TO THE SPECIFICATION FOR ASPHALTIC CONCRETE These notes are for guidance and are not to be included in the contract documents. The scope provides a definition of dense
More informationMix Design & Production Control Recertification. Quality Control / Quality Assurance
Mix Design & Production Control Recertification Quality Control / Quality Assurance SDDOT Employee Timesheet Information Charge to Office Overhead AFE 71B7 Function - 1174 **IMPORTANT** Recertification
More informationTHE COMPARISON OF MODIFIED IDOT & AASHTO T-283 TEST PROCEDURES ON TENSILE STRENGTH RATIO AND FRACTURE ENERGY OF MIXTURES
P5EE-212 THE COMPARISON OF MODIFIED IDOT & AASHTO T-283 TEST PROCEDURES ON TENSILE STRENGTH RATIO AND FRACTURE ENERGY OF MIXTURES Maziar Moaveni, Ibrahim Abuawad Department of Civil and Environmental Engineering,
More informationPerformance of Recycled Rubber Modified Binders in Warm Mix Asphalt Mixtures
Performance of Recycled Rubber Modified Binders in Warm Mix Asphalt Mixtures P. E. Sebaaly 1 E. Y. Hajj 1 E. Hitti 2 1 Pavements/Materials Program, Dept of Civ. & Env. Engineering MS257, University of
More informationAnalysis of Warm Mix Asphalt Additives
Twelfth LACCEI Latin American and Caribbean Conference for Engineering and Technology (LACCEI 2014) Excellence in Engineering to Enhance a Country s Productivity July 22-24, 2014 Guayaquil, Ecuador. Analysis
More informationPerformance-based Design Method of Asphalt Mixes that Contain Reclaimed Asphalt Pavement (RAP)
Performance-based Design Method of Asphalt Mixes that Contain Reclaimed Asphalt Pavement (RAP) Haifang Wen Kun Zhang Washington State University Fouad Bayomy and Ahmed Muftah University of Idaho FHWA Mix
More informationCHAPTER 2: HOT MIX DESIGN
CHAPTER 2: HOT MIX DESIGN Premix - Materials Aggregate Gradation Distribution of particle sizes expressed as a percentage of total weight (total % passing various sieve sizes) Determined by sieve analysis
More informationSCOPE OF ACCREDITATION TO ISO/IEC 17025:2005. QC LABORATORIES, INC Northwest Freeway Houston, TX Damon Dolat Phone:
SCOPE OF ACCREDITATION TO ISO/IEC 17025:2005 QC LABORATORIES, INC. 10810 Northwest Freeway Houston, TX 77092 Damon Dolat Phone: 713 695 1133 Valid to: July 31, 2018 Certificate Number: 1127.01 In recognition
More informationChapter Eight. Minnesota Mix Specifications, Methods & Quality Control
Minnesota Mix Specifications, Methods & Quality Control Minnesota Mix Specifications, Methods & Quality Control This chapter of the Design Guide has been prepared to assist persons associated with designing
More informationWMA Webinar September 25, 2012
WMA Webinar September 25, 2012 1 1 Overview Similarities in mix design Differences in mix design Evolution of mix design Guidelines for design with WMA/RAP/RAS Best Practices 2 4 Steps in Mix Design 1.
More informationTHE APPLICATION OF ASBUTON AND POLYMER MODIFIED BITUMEN FOR PAVEMENT MIXTURE DESIGN AT HOT AND ARID REGION
THE APPLICATION OF ASBUTON AND POLYMER MODIFIED BITUMEN FOR PAVEMENT MIXTURE DESIGN AT HOT AND ARID REGION Mohammed I. D. Matar 1), Ary Setyawan 2), Kusno Adi Sambowo 3) Post Graduate Civil Engineering
More informationSEAUPG 2009 CONFERENCE-HILTON HEAD ISLAND, SOUTH CAROLINA
Overview Use of High Percentages of RAP Andrea Kvasnak Where are we at in RAP Usage? What is the current practice? What is the future of RAP to allow greater percentages? 1 2 Survey of DOT s on RAP Usage
More informationRe: Optimization of Asphalt Cement Content to Improve Durability of Asphalt Mixes
SPECIAL BULLETIN 3-A QUALITY OF ASPHALT PAVEMENT TASK FORCE November 2016 Re: Optimization of Asphalt Cement Content to Improve Durability of Asphalt Mixes The introduction of Superpave Technology in Ontario
More informationTechnical Support/ Research to the NJDOT. Thomas Bennert Rutgers University Asphalt/Pavement Laboratory (RAPL)
Technical Support/ Research to the NJDOT Thomas Bennert Rutgers University Asphalt/Pavement Laboratory (RAPL) Tech Support/Research Rutgers Asphalt/Pavement Laboratory (RAPL) implemented to support the
More informationSuperpave Mix Design
بسم الله الرحمن الرحيم Superpave Mix Design Introduction : Superpave procedure is considered as an improved method for producing a good performing asphaltic paving mix. It is a short name for Superior
More informationApplication of Mechanistic Tests for Performance of HMA Mixtures
Application of Mechanistic Tests for Performance of HMA Mixtures Louay Mohammad, Ph.D. Louisiana Transportation Research Center Louisiana State University 2009 Louisiana Transportation Conference February
More informationWhy MnROAD Asphalt Mixtures Performed Well in the TxDOT Overlay Tester. Joe W. Button, P.E. Senior Research Engineer Texas Transportation Institute
Why MnROAD Asphalt Mixtures Performed Well in the TxDOT Overlay Tester by Joe W. Button, P.E. Senior Research Engineer Texas Transportation Institute for the Flexible Pavements Branch Construction Division
More informationLABORATORY INSPECTION INFORMATION REQUEST
LABORATORY INSPECTION INFORMATION REQUEST This information will assist in the processing of laboratory inspections. The inspection is a two-man day comprehensive review that includes review of the quality
More informationWMA Webinar September 18, 2013
WMA Webinar September 18, 2013 1 1 Overview Present guidelines for design with WMA/RAP/RAS Identify WMA processes for various WMA technologies Identify differences in HMA/WMA mix design Discuss evolution
More informationProject Description US 30, Montpelier SCL to Dingle Rd. MP (3.22 Miles)
Evaluation of Fiber Reinforced Asphalt Pavements Idaho Case Study US 3 at Montpelier, Idaho ITD Project Phase 1 (RP 237) Lab Evaluation of Materials Project Team: UI Fouad Bayomy (PI), Ahmed Muftah (Grad
More informationDesigning Open-Graded Mixes
Designing Open-Graded Mixes Open Graded Mixes Designed to allow water to flow through the mix (rapidly) Porous Friction Course (PFC) or open-graded friction course Porous European Mix - coarser PFC used
More informationRecycled Base Aggregates in Pavement Applications
Recycled Base Aggregates in Pavement Applications Jeffrey S. Melton, Ph.D. Outreach Director, Recycled Materials Resource Center jeffrey.melton@unh.edu The Big Picture Sustainability Nexus of major issues
More informationKANSAS DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION TO THE STANDARD SPECIFICATIONS, 2015 EDITION
Sheet 1 of 6 KANSAS DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION TO THE STANDARD SPECIFICATIONS, 2015 EDITION Delete SECTION 2501 and replace with the following: SECTION 2501 PART V 2501.1 GENERAL In
More informationHMA Performance-Related Specification (HMA-PRS)
HMA Performance-Related Specification (HMA-PRS) NC State University: ARA: Heritage Research: AAT: FHWA: Y. Richard Kim, Murthy Guddati Harold Von Quintus, Hyung Lee Gerry Huber Ray Bonaquist Nelson Gibson,
More informationWork Plans Related to Modeling Andrew Hanz and Hussain Bahia
Engineered Materials Details of UW Madison Details of UW Madison Work Plans Related to Modeling Andrew Hanz and Hussain Bahia EPMs Main Research Themes Use modeling to guide materials design Micromechanics
More information