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MISSISSIPPI DEPARTMENT OFTRANSPORTATIONFIELD MANUALForASPHALT MIXTURESMATERIALS DIVISIONUpdated September 30, 2019
FHWA Approval Date by SectionChapterApproval DateChapter 19/30/2019Chapter 29/30/2019Chapter 39/30/2019Chapter 49/30/2019Chapter 59/30/2019Chapter 69/30/2019Chapter 79/30/2019Appendix 19/30/2019Appendix 29/30/2019Appendix 39/30/2019
TABLE OF CONTENTSCHAPTER 11.11.21.31.4Purpose . 5Terminology . 5Definitions . 6Referenced Documents . 7CHAPTER 22.12.22.34.3Revised-2019QC AND QA LABORATORIES. 11General . 11QC Laboratory . 11QA Laboratory. 12CHAPTER 44.14.2PERSONNEL REQUIREMENTS . 10General . 10Contractor Quality Control Personnel . 10MDOT Quality Assurance Personnel . 10CHAPTER 33.13.23.3GENERAL . 5JOB MIX FORMULA . 13General . 13Contractor Responsibilities . 134.2.1Original Designs of Job Mix Formula . 134.2.2Job Mix Formula Transfers . 134.2.3Adjustments to Job Mix Formula . 144.2.4Redesign of Job Mix Formula . 16MDOT Responsibilities . 164.3.1Original Designs . 164.3.1.1Project Engineer . 164.3.1.2District Materials Laboratory . 164.3.1.3Central Laboratory. 164.3.2Job Mix Formula Transfers . 174.3.2.1Project Engineer . 174.3.2.2District Materials Laboratory . 174.3.2.3Central Laboratory. 174.3.3Adjustments to Job Mix Formula . 184.3.3.1Project Engineer and District Materials Laboratory. 184.3.3.2Central Laboratory. 183
CHAPTER 15Revised-2019CONTRACTOR’S QUALITY MANAGEMENT PROGRAM . 19General . 19Sampling . 195.2.1Aggregate and RAP Stockpiles . 195.2.1.1Sampling Location. 195.2.1.2Sampling and Testing Frequency . 195.2.1.3Testing . 195.2.2Asphalt Binder Material . 195.2.3Asphalt Mixture . 205.2.3.1Testing Requirements . 205.2.3.1.1Mixture Gradation . 205.2.3.1.2Air Voids and VMA . 205.2.3.1.3Asphalt Content . 205.2.3.1.4Fractured Face Count . 215.2.3.1.5Stripping Tests . 215.2.3.1.6Density Tests . 215.2.3.1.7Quality Control Charts . 215.2.3.2Determining Sampling Increment Size . 215.2.3.3Determining Sample Location. 225.2.3.4Mixture Sampling Point . 235.2.3.5Sample Identification. 23Reduction of Mixture Samples to Testing Size . 235.3.1General . 235.3.2Initial Sample. 235.3.3Nuclear AC / Moisture / Gyratory Reduction . 245.3.4MSG (Gmm) / Extraction Reduction. 255.3.5Modifications. 25Compaction of SHRP Gyratory Specimens . 26Compacted Specimen Bulk Specific Gravity . 27Maximum Specific Gravity (Gmm) . 28Moisture Damage Testing . 32Calculating Air Voids (Pa) . 33Calculation Voids in Mineral Aggregate (VMA). 34Gradation of Extracted Aggregate from Mixture . 35Field Adjustment of Job Mix Formula (JMF) . 35Documentation . 35JMF Limits, Warning Limits and Warning Bands . 36Corrective Action . 37Troubleshooting . 394
CHAPTER 66.16.26.36.46.56.6Material Samples . 416.1.1Asphalt Binder Material . 416.1.2Hydrated Lime . 41Asphalt Material Quality Assurance Requirements . 416.2.1General . 416.2.2Samples. 416.2.3Testing Frequency . 426.2.4Quality Assurance Testing . 426.2.5Verification of Quality Control Test Results. 42Asphalt Material Plant Production Review Guidelines . 436.3.1Prestart-up . 436.3.2Start- up Day. 446.3.3During Production . 45Roadway Production Review Guidelines . 466.4.1Placement Operations . 476.4.2Test Strip . 476.4.3Pavement Smoothness . 47Required Plant Shutdowns . 48Guidelines for Resolution of Differences between QC and QATest Results . 486.6.1Flow Chart . 496.6.2Examples of Resolution of Differences BetweenQC and QA Results . 51CHAPTER 77.17.27.37.47.57.67.77.87.97.10MDOT QUALITY ASSURANCE PROGRAM . 41ROADWAY DENSITY. 57Purpose . 57Definitions . 57Roadway Density Measurements . 57First Production Day. 57Compaction Effort for Lot to Lot Operations. 60Nuclear Density Procedure for Determining Acceptance of Lots . 60Nuclear Gauge Bias Update . 62Limits on Daily Compaction . 63Procedure for Determining Limits for Removing Lot(s) or Part(s) Thereofnot Allowed to Remain in Place . 64Procedure for Re-evaluating Corrected Lot . 65APPENDIX 1MISSISSIPPI TEST METHODS and MDOT SOPs . 68APPENDIX 2FORMS . 116APPENDIX 3EXAMPLE PROBLEMS . 128Revised-20195
CHAPTER 1GENERAL1.1 Purpose - The purpose of this manual is to establish uniform procedures and practicesfor quality control and quality assurance sampling and testing of asphalt mixtures.This manual provides instructions and procedures for Contractor and MDOTpersonnel for the design, control and acceptance of asphalt mixtures under MDOT’sQuality Management Program (QMP) as required by the specifications. Samplingprocedures, sampling frequencies, and testing to be performed by the Contractor forthe quality control of asphalt mixtures at the asphalt plant and by MDOT for thequality assurance and acceptability of these mixtures are detailed. When necessaryfor clarification, examples are provided. For ready reference, the specificatio ns,standard operating procedures, and example forms for documentation of test resultsare provided in appendices to this manual.1.2 TerminologyAASHTO - American Association of State Highway and Transportation OfficialsASTM - American Society of Testing MaterialsBRCF - Bulk Specific Gravity (Gmb) Reheat Calibration FactorCAT-I - Certified Asphalt Technician-Level I. Contractor or MDOT personnel whohave successfully completed the MDOT Asphalt Technician Certification Programfor Level I certification. This certification level is required for performance ofsampling and testing of asphalt mixtures and component materials.CAT-II - Certified Asphalt Technician-Level II. Contractor or MDOT personnelwho have successfully completed the MDOT Asphalt Technician Certificatio nProgram for Level I and Level II. This certification level is required for Contractorpersonnel who interpret asphalt test results and make necessary plant adjustmentssuch that the asphalt mixture produced conforms to the job mix formula.CMDT - Certified Mixture Design Technician. Contractor or MDOT personnel whohave successfully completed the MDOT Asphalt Technician Certification Programfor the design of asphalt mixtures. This certification level is required for designingor approving the design of asphalt mixtures. All personnel at this level must havefirst completed requirements and obtained CAT-I and CAT-II certification levels.FHWA - Federal Highway AdministrationHMA - Hot Mix AsphaltHT - High Type Asphalt MixturesJMF - Job Mix FormulaMDOT - Mississippi Department of TransportationMRCF - Maximum Specific Gravity (Gmm) Reheat Correction FactorMT-## - Mississippi Test Methods (e.g., MT-78)Revised-20196
MT - Medium Type Asphalt MixturesNCAT - National Center of Asphalt TechnologyQA - Quality AssuranceQC - Quality ControlOGFC – Open Graded Friction CourseQMP - Quality Management ProgramRAP - Recycled Asphalt PavementSMA – Stone Matrix AsphaltST - Standard Type Asphalt MixturesSUPERPAVE - Superior Performing Asphalt PavementTSR - Tensile Strength RatioUHMA – Ultra Thin Hot Mix AsphaltVFA - Voids Filled With AsphaltVMA - Voids in Mineral AggregateWMA - Warm Mix AsphaltUWMA –
30.09.2019 · AASHTO T 104 Soundness of Aggregate by Use of Sodium Sulfate or Magnesium Sulfate . AASHTO T 166 Bulk Specific Gravity of Compacted Bituminous Mixtures Using Saturated Surface-Dry Specimens . AASHTO T 209 Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures . AASHTO T 218 Sampling Hydrated Lime . AASHTO T 269 Percent Air Voids in Compacted
