FIELD MANUAL For HOT MIX ASPHALT (HMA) - Mississippi ...

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Mississippi DOT – HMA QC/QA Dispute Resolution Flow Chart Definitions: QC and QC Original = test results on the samples tested in the Contractor’s lab during construction. QC RA = The running average of the Contractor’s test results for the preceding tests or the subsequent tests as required by Section 907-401.02.6.2 of the specifications. QA and QA Verification = the routine District quality assurance verification tests. QC Verification = tests conducted by the Contractor on a split of the QA verification sample. QC Split = tests conducted by the Contractor on a split of the retained QC samples. QA Split = tests conducted by District on a split of the retained QC samples. MD = Materials Division tests on either splits of the retained QC samples or other samples to resolve differences in test results between MDOT and the Contractor. START QC/QA Data Comparison (As an example, QA test conducted at Sample 5.) Step 1 Do QC RA /QA Results Agree according to 907-401.02.6.2? Yes Step 2 Do the QA results meet the JMF criteria? Yes Result A Check is done. The results agree. No Step 4 Check calculations for errors. No No Step 3 Is the difference between QC RA and QA equal to or less than 50% of the allowable difference in 907-401.02.6.2? Yes Correct the error in calculations. Yes Result B If error found in QC data, check all QC data for errors. Use corrected QC results for payment. Result D Fix the problem and use QC results for payment. (Sample 5) Go to the next sheet. Step 9 No Did a calculation error cause the difference? Yes Step 5 Does the QA test agree with the QC Verification test within the allowable differences in 907.401.02.6.2? 1 The results check according to the flow chart if you obtain a yes reply from Step 3. No No Step 7 Did equipment or procedure error in QA results cause the difference? No Step 8 Did equipment or procedure error in QC results cause the difference? Yes Yes Result C Go to Step 1 and compare the QA test to the running average of four subsequent QC tests. Yes Step 6 Was a process adjustment made just prior to the QA sample being obtained? No Go to the next sheet. Step 9 Result E Run QA Split tests on previous and next samples (4&6) until they compare with QC Original according to the flow chart 1 . For payment, use the QA results for tests that do not compare. Rev. February 5, 2007 50
Result F Check complete. Use QA Split results for payment for the tests that do not compare. Yes Step 11 Does the average of QC Split and QA Split for each sample (4 or 6) check according to the flow chart 1 with the QC Original tests? No Result G Continue QA testing on the retained samples until results check with QC Original according to the flow chart 1 . For payment, use the QA results for tests that do not compare. No Yes Step 9 Split the next and previous QC retained samples (4&6). If the dispute resolution reaches this step, increase the QA sampling and testing to the same frequency required of the Contractor. These samples may be used as part of the dispute resolution process. For Gmm and Gradation, split the sample into three parts. Conduct QC and QA tests on two of the parts and save the third part for Materials Division (MD) testing, if necessary. For Gmb, split the sample into two parts. Conduct QC and QA tests on the two parts. If MD testing is required, use the first and second QA samples obtained as part of the increased sampling frequency for the dispute resolution. Split each sample three ways for QC, QA and MD checks on the mixture. For Asphalt Content, split the sample into two parts. Conduct QC and QA tests on the two parts. If MD testing is required, both the QC and the QA Yes labs will submit their test pans and gauge calibrations to the MD lab. Yes Step 10 Does the average of QC Split tests (4&6) and the average of QA Split tests (4&6) check according to the flow chart 1 ? No Provide saved portions of split samples to Materials Division (MD) for testing. Step 12 Does the average of MD tests (4&6) and the average of QA Split tests (4&6) check according to the flow chart 1 ? Yes Step 14 Does the average of MD and QA Split for each sample (4 or 6) check according to the flow chart 1 with the QC Original tests? No No Split next retained samples for MD, QA & QC testing. Step 13 Does the average of MD tests (4&6) and the average QC Split tests (4&6) check according to the flow chart 1 ? Yes No Step 15 Does the average of MD and QC Split for each sample (4 or 6) check according to the flow chart 1 with the QC Original tests? Yes Result F Check complete. Use QA Split results for payment for tests that do not compare. Result H Continue QC Split testing until results check with QC Original according to the flow chart 1 . Use QC Split results for payment for tests that do not compare. Result I Check complete. Use QC Original results for payment. Check QA testing. Rev. 1 The February results 5, check 2007 according to the flow chart if you obtain 51 a yes reply from Step 3.
Page 1 and 2: MISSISSIPPI DEPARTMENT OF TRANSPORT
Page 3 and 4: TABLE OF CONTENTS (Cont’d.) Page
Page 5 and 6: APPENDIX 1: MISSISSIPPI TEST METHOD
Page 7 and 8: FHWA - Federal Highway Administrati
Page 9 and 10: AASHTO Standards (Cont’d.) AASHTO
Page 11 and 12: CHAPTER 2 PERSONNEL REQUIREMENTS 2.
Page 13 and 14: Check sieves for conformance to AAS
Page 15 and 16: equest for transfer of the verified
Page 17 and 18: discussed a possible change for the
Page 19 and 20: equest must certify to the conditio
Page 21 and 22: Asphalt binder from the asphalt wor
Page 23 and 24: EXAMPLE Anticipated Tonnage For The
Page 25 and 26: A B State Contractor 40+ kg C Contr
Page 27 and 28: 5.4 Compaction of SHRP Gyratory Spe
Page 29 and 30: 5.5.4 On the first day of productio
Page 31 and 32: Where: A = Dry Mass of Test Specime
Page 33 and 34: 5.6.1.9 On the first day of product
Page 35 and 36: 5.9 Calculating Voids In Mineral Ag
Page 37 and 38: The specified JMF limits and warnin
Page 39 and 40: that the asphalt pump malfunctioned
Page 41 and 42: CHAPTER 6 MDOT QUALITY ASSURANCE PR
Page 43 and 44: verification test results fail to m
Page 45 and 46: Arrange to have a verification samp
Page 47 and 48: and resolve deficiencies noted on t
Page 49: mixture (401.02.6.3). 6.6 Guideline
Page 53 and 54: In Step 3, the question “Is the d
Page 55 and 56: 6.6.1.2 Example 2. Basic Data - The
Page 57 and 58: The above table shows that the Step
Page 59 and 60: 7.4.3 Nuclear Density Testing 1. Se
Page 61 and 62: The acceptable range of individual
Page 63 and 64: Site 1 Site 2 Site 3 Site 4 Site 5
Page 65 and 66: Allowable Gauge Bias Deviation (Tab
Page 68 and 69: Re-Evaluating a Corrected Lot (Two
Page 70 and 71: Rev. 6/01/05 Mississippi Department
Page 98 and 99: Excerpt from Materials Division Ins
Page 100 and 101:
Materials Division Inspection, Test
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Page 104 and 105:
Page 106 and 107:
Page 108 and 109:
Page 110 and 111:
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Approved by: D.B. McCaa S.O.P. No.:
Page 116 and 117:
APPENDIX 2 FORMS Rev. February 5, 2
Page 118 and 119:
TMD-005 QMP HOT-MIX ASPHALT Q.A. Mi
Page 120 and 121:
TMD-008 MISSISSIPPI DEPARTMENT OF T
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TMD-042 MISSISSIPPI DEPARTMENT OF T
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Page 1 of 2 MISSISSIPPI DEPARTMENT
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Page 1 of 2 MISSISSIPPI DEPARTMENT
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APPENDIX 3 EXAMPLE PROBLEMS Rev. Fe
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7 Example No. 1 Air Voids 6.5 6 5.5
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Example No. 2 7 Air Voids 6.5 6 5.5
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FIELD MANUAL For HOT MIX ASPHALT (HMA) - Mississippi ...

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