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Edgewater Creek Bridge Replacement November 2023 108 b. Second, adjust the preliminary upper and lower acceptance limits determined 1 from step (a) the minimum amount necessary so that none of the aggregate 2 properties are outside the control points in Section 9-03.8(6). The resulting 3 values will be the upper and lower acceptance limits for aggregates, as well as 4 the USL and LSL required in Section 1-06.2(2)D2. 5 2. Job Mix Formula Adjustments – An adjustment to the aggregate gradation or 6 asphalt binder content of the JMF requires approval of the Engineer. Adjustments 7 to the JMF will only be considered if the change produces material of equal or 8 better quality and may require the development of a new mix design if the 9 adjustment exceeds the amounts listed below. 10 a. Aggregates –2 percent for the aggregate passing the 1½″, 1″, ¾″, ½″, ⅜″, and 11 the No. 4 sieves, 1 percent for aggregate passing the No. 8 sieve, and 0.5 12 percent for the aggregate passing the No. 200 sieve. The adjusted JMF shall 13 be within the range of the control points in Section 9-03.8(6). 14 b. Asphalt Binder Content – The Engineer may order or approve changes to 15 asphalt binder content. The maximum adjustment from the approved mix 16 design for the asphalt binder content shall be 0.3 percent 17 18 5-04.3(9)A Vacant 19 20 5-04.3(9)B Vacant 21 22 5-04.3(9)C Mixture Acceptance – Nonstatistical Evaluation 23 HMA mixture which is accepted by Nonstatistical Evaluation will be evaluated by the 24 Contracting Agency by dividing the HMA tonnage into lots. 25 26 5-04.3(9)C1 Mixture Nonstatistical Evaluation – Lots and Sublots 27 A lot is represented by randomly selected samples of the same mix design that will be 28 tested for acceptance. A lot is defined as the total quantity of material or work produced 29 for each Job Mix Formula placed. Only one lot per JMF is expected. A sublot shall be 30 equal to one day’s production or 800 tons, whichever is less except that the final sublot 31 will be a minimum of 400 tons and may be increased to 1200 tons. 32 33 All of the test results obtained from the acceptance samples from a given lot shall be 34 evaluated collectively. If the Contractor requests a change to the JMF that is approved, 35 the material produced after the change will be evaluated on the basis of the new JMF for 36 the remaining sublots in the current lot and for acceptance of subsequent lots. For a lot 37 in progress with a CPF less than 0.75, a new lot will begin at the Contractor’s request 38 after the Engineer is satisfied that material conforming to the Specifications can be 39 produced. 40 41 Sampling and testing for evaluation shall be performed on the frequency of one sample 42 per sublot. 43 44 5-04.3(9)C2 Mixture Nonstatistical Evaluation Sampling 45 Samples for acceptance testing shall be obtained by the Contractor when ordered by the 46 Engineer. The Contractor shall sample the HMA mixture in the presence of the Engineer 47