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Edgewater Creek Bridge Replacement November 2023 107 When more than one JMF is being utilized to produce HMA, the material produced for 1 each JMF shall be placed by separate spreading and compacting equipment. The 2 intermingling of HMA produced from more than one JMF is prohibited. Each strip of HMA 3 placed during a work shift shall conform to a single JMF established for the class of HMA 4 specified unless there is a need to make an adjustment in the JMF. 5 6 5-04.3(8) Aggregate Acceptance Prior to Incorporation in HMA 7 For HMA accepted by nonstatistical evaluation the aggregate properties of sand 8 equivalent, uncompacted void content and fracture will be evaluated in accordance with 9 Section 3-04. Sampling and testing of aggregates for HMA accepted by commercial 10 evaluation will be at the option of the Engineer. 11 12 5-04.3(9) HMA Mixture Acceptance 13 Acceptance of HMA shall be as provided under nonstatistical, or commercial evaluation. 14 15 Nonstatistical evaluation will be used for the acceptance of HMA unless Commercial 16 Evaluation is specified. 17 18 Commercial evaluation will be used for Commercial HMA and for other classes of HMA 19 in the following applications: sidewalks, road approaches, ditches, slopes, paths, trails, 20 gores, prelevel, temporary pavement, and pavement repair. Other nonstructural 21 applications of HMA accepted by commercial evaluation shall be as approved by the 22 Engineer. Sampling and testing of HMA accepted by commercial evaluation will be at the 23 option of the Engineer. 24 25 The mix design will be the initial JMF for the class of HMA. The Contractor may request a 26 change in the JMF. Any adjustments to the JMF will require the approval of the Engineer 27 and may be made in accordance with this section. 28 29 HMA Tolerances and Adjustments 30 1. Job Mix Formula Tolerances – The constituents of the mixture at the time of 31 acceptance shall be within tolerance. The tolerance limits will be established as 32 follows: 33 For Asphalt Binder and Air Voids (Va), the acceptance limits are determined 34 by adding the tolerances below to the approved JMF values. These values 35 will also be the Upper Specification Limit (USL) and Lower Specification Limit 36 (LSL) required in Section 1-06.2(2)D2 37 Property Non-Statistical Evaluation Commercial Evaluation Asphalt Binder +/- 0.5% +/- 0.7% Air Voids, Va 2.5% min. and 5.5% max N/A For Aggregates in the mixture: 38 a. First, determine preliminary upper and lower acceptance limits by applying the 39 following tolerances to the approved JMF. 40 Aggregate Percent Passing Non-Statistical Evaluation Commercial Evaluation 1”, ¾”, ½”, and 3/8” sieves +/- 6% +/- 8% No. 4 sieve +/-6% +/- 8% No. 8 Sieve +/- 6% +/-8% No. 200 sieve +/- 2.0% +/- 3.0%