353SMA GRADATION CONTROL LIMITS

410.06 Recycled Materials 110

Recycled materials shall be in accordance with 401.06 for dense graded mixtures except non-SMA RAP material for use in the SMA mixture shall be 100% passing the 3/8 in. (9.5 mm) sieve and 95 to 100% passing the No. 4 (4.75 mm) sieve. SMA RAP material shall be the product derived by exclusivel y milling an existing SMA mixture. The SMA RAP material sha ll pass the maximum size sieve for the mixture being produced as follows: SMA RAP GRADATION, % Sieve Size Mixture Designation 9.5 mm 12.5 mm 19.0 mm Lower Upper Lower Upper Lower Upper 1 1/2 in. (37.5 mm) 100.0 100.0 1 in. (25.0 mm) 100.0 100.0 95.0 100.0 3/4 in. (19.0 mm) 100.0 100.0 95.0 100.0 --- --- 1/2 in. (12.5 mm) 95.0 100.0 --- --- --- --- The Contractor may request the use of SMA RAP material in the SMA mixture 120 provided the material is stockpiled separately at the plant and the material properties were determined in accordance with ITM 584 during stockpile construction. The request shall include all QC test results describing the stockpile composition. The 410.06 355 Engineer will obtain a representative sample of the SMA RAP material in accordance with ITM 207 for testing in accordance with ITM 590 to verify the proposed design value.

410.07 Lots and Sublots Lots will be defined as 4,000 t of SMA intermediate mixture or 2,400 t of SMA surface mixture. Lots will be further sub-divided into sublots not to exceed 1,000 t of 130

SMA intermediate mixture or 600 t of SMA surface mixture. Partial sublots of 100 t or less will be added to the previous sublot. Partial sublots greater than 100 t constitute a full sublot. 410.08 Job Mix Formula A JMF shall be developed by a certified HMA producer in ac cordance with ITM 583. A JMF used for SMA mixture in the cu rrent calendar year will be allowed. The aggregate and recycled materials blend percentage and the amount passing all sieves on the DMF may be adjusted provi ded the gradation limits do not exceed the 140 requirements of 410.05. Adjustments to the aggregate and recycled materials blend percentage, gradation and the new combined aggregate bulk specific gravity shall be included on the JMF. The total binder content on the JMF may be determined by adjusting the DMF a maximum of r0.3%. The recycled materi als binder content may be adjusted as part of the total binder content provid ed the binder replacement percentage is in accordance with 410.06. The mixture compaction temperature shall be 300 ±9°F. The JMF shall list the 150 minimum and maximum plant discharge temper atures as applicable to the mixture. The JMF for each mixture shall be submitted to the Engineer. 410.09 Acceptance of Mixtures Acceptance of mixtures for binder content and gradation for each lot will be based on tests performed by the Engineer. The Engineer will randomly select the location within each sublot for sampling in accordan ce with ITM 802. An acceptance sample will consist of one plate sample at the ra ndom location. A backup sample will consist of one plate sample located 2 ft towards the center of the mat from the acceptance sample. 160 Samples from each location shall be obtaine d from each sublot from the pavement in accordance with ITM 580. The Engineer will take immediate possession of the samples. A maximum specific gravity sample and a binder content and gradation sample will be obtained from the plate sample in accordance with ITM 587. The binder content will be determined in accordance with ITM 586 or ITM 571 as directed by the Engineer and the gradation will be determined in accordance with AASHTO T 30. The 410.09 356 maximum specific gravity will be mass determined in water in accordance with 170 AASHTO T 209. The test results of the sublots will be averaged and shall meet the requirements for tolerances from the JMF for each sieve and binder content. The Engineer will make the sublot acceptance test results available after receiving the sublot quality control results from the Contractor. ACCEPTANCE TOLERANCE FOR MIXTURES (Percent Mass) Mixture Number of Tests Sieve Size *25.0 mm *19.0 mm *12.5 mm *9.5 mm *4.75 mm 2.36 mm 600 μm 75 μm Surface 1 --- --- --- --- --- 8.0 4.0 2.5 2 --- --- --- --- --- 5.7 2.8 2.1 3 --- --- --- --- --- 4.6 2.3 1.8 4 --- --- --- --- --- 4.0 2.0 1.5 Intermediate 1 --- --- --- --- --- 10.0 6.0 2.0 2 --- --- --- --- --- 7.0 4.2 1.4 3 --- --- --- --- --- 5.8 3.5 1.2 4 --- --- --- --- --- 5.0 3.0 1.0 * The acceptance tolerance for this sieve shall be the applicable composition limits specified in 410.05. ACCEPTANCE TOLERANCE FOR BINDER Binder Content Number of Tests 1 2 3 4 % Binder 0.7 0.5 0.4 0.3 Acceptance of mixtures for range will be determined using the results of sublot tests performed by the Engineer from each lo t. If the range is not in accordance with 180 the requirements, adjustment points will be assessed in accordance with 410.19(a). ACCEPTANCE TOLERANCE FOR RANGE (±Percent Mass) Sieve Size and Binder Content Percentage Points Surface Intermediate No. 8 (2.36 mm) 12.0 15.0 No. 30 (600 μm) 6.0 9.0 No. 200 (75 μm) 2.0 3.0 % Binder 1.0 1.0 Acceptance tolerances for bi nder content and gradation will be as set out above for the number of tests performed. The acceptance tolerance for range will be as set out above for lots of more than one sublot. The range of binder shall be the difference between the highest sublot binder content and the lowest sublot binder content in one 410.09 357 lot. The range of gradation shall be the difference between the highest sublot percent passing and the lowest sublot percent pa ssing each required sieve in one lot. Single test values and averages will be reported to the nearest 0.1%. Rounding will be in accordance with 109.01(a). Lot adjustment points will be assessed in accordance with 410.19(a) when the average or range for binder cont ent or gradation are not met. The Contractor may request an appeal of the Engineer’s test results in accordance with 410.20. A binder draindown test in accordance with AASHTO T 305 shall be completed 200 once per lot in accordance with 410.07 and shall not exceed 0.30%. A Type C certification in accordance with 916 shall be provided for the stabilizing additives for each shipment. Stabilizing a dditives from different manufacturers and different types of additives shall not be intermixed. In the event than an acceptance sample is not available to represent sublot, all test results of the previous sublot will be used for acceptance. If the previous sublot is not available, the subsequent sublot will be used for acceptance. Samples shall not be obtained from areas placed with paving equipment in accordance with 409.03(c)2 or 409.03(c)3. If a random location falls within this area, the Engineer will randomly select another location within the sublot for sampling. If an entire sublot falls within this area, test results from the previous sublot will be used for acceptance. If the previous sublot is not available, the subsequent sublot will be used for acceptance. CONSTRUCTION REQUIREMENTS

410.10 General 220

Equipment for SMA operations shall be in accordance with 409. The Contractor shall submit to the Engineer, prior to use, a written Certificate of Compliance that the proposed paving equipment has been modified in accordance with 401.10 or is new and includes the modifications. Fuel oil, kerosene, or solvents shall not be transported in open containers on equipment. Cleaning of equipment and small tools shall not be performed on the pavement or shoulder areas. SMA mixtures shall not exhibit segregation, flushing, or bleeding. Corrective 230 action shall immediately be taken to prevent continuation of these conditions. Segregated, flushed, or bleeding of SMA mixtures will be referred to the Department’s 410.10 358 Division of Materials and Te sts for adjudication as a failed material in accordance with 105.03. All mixtures that become loose and broken, mixed with dirt, or are in any way defective shall be removed and replaced in accordance with 105.03.

410.11 Preparation of Surfaces to be Overlaid

Milling of an existing pavement surface shall be in accordance with 306. Surfaces 240 on which a mixture is placed shall be free fr om objectionable or foreign materials at the time of placement. Milled asphalt surfaces and asphalt surfaces shall be tacked in accordance with 406. Contact surfaces of curbing, gutters, manholes, and other structures shall be tacked in accordan ce with 406.

410.12 Process Control

The Engineer and Contractor will jointly review the operations to ensure compliance with the QCP. Continuous violations of compliance with the QCP will 250 result in suspension of paving operations. 410.13 Weather Limitations SMA courses shall be placed when the ambient temperature and the temperature of the surface on which it is to be placed is 45°F or above.

410.14 Spreading and Finishing The mixture shall be placed upon an approved surface by means of a paver or other mechanical devices in accordance with 409.03. Mixtures in areas inaccessible to

mechanical devices may be placed by other methods. The temperature of mixture at 260 the time of spreading shall be no more than 315°F whenever PG 70-22 binder is used or no more than 325°F whenever PG 76-22 binder is used. The temperature of each mixture shall not be less than 245°F at the time of spreading when placed with paving equipment in accordance with 409.03(c)2 or 409.03(c)3. No mixture shall be placed on a previously paved course that has not cooled to less than 175°F. Prior to paving, both the planned quantity and lay rate shall be adjusted by multiplying by the MAF. When mixture is produced from more than one DMF or JMF for a given pay item, the MAF will be applied to the applicable portion of the mixture for each. 270 Planned SMA courses greater than 220 lb /sq yd placed under traffic, shall be brought up even with each adjacent lane at the end of each work day. Planned SMA courses less than or equal to 220 lb/sq yd shall be brought forward concurrently, within practical limits, limiting the work in one lane to not more than one work day of production before moving back to bring forward the adjacent lane. Hydraulic extensions on the paver will not be allowed for continuous paving operations. Fixed extensions or extendable screeds shall be used on courses greater 410.11 359 than the nominal width of the paver except in areas where the paving widths vary. 280 Hydraulic extensions may be used in tapers and added lanes less than 250 ft in length. Automatic slope and grade controls will be required and shall be outlined in the QCP. SMA mainline and SMA shoulders which are 8 ft or more in width shall be placed with automatic paving equipment. The rollers shall be operated to avoid shoving of the SMA and at speeds not to exceed 3 mph. Rollers shall be in accord ance with 409.03(d)1, 409.03(d)2, or 290 409.03(d)7. Vibratory rollers meeting the requirements of 409.03(d)4 may be used but shall not be operated in vibratory mode, except the vibratory mode may be used on the first pass to the paver. Oscillatory ro llers in accordance with 409.03(d)5 will be allowed for use but the vertical impact force capability shall not be used, except the vertical impact force capability may be used on the first pass to the paver. The finished thickness of any course shall be at least two times but not more than five times the maximum particle size as shown on the DMF. A safety edge shall be constructed at locations where the surface mixture is 300 constructed adjacent to an aggregate or earth shoulder.

410.15 Joints

Longitudinal joints in the surface shall be at the lane lines of the pavement. Hot poured joint adhesive in accordance with 906 shall be applied to longitudinal joints constructed between two adjacent HMA courses in the top course of dense graded intermediate mixtures and all 9.5 mm and 12.5 mm SMA mixture courses. This includes joints within the traveled way as well as between any of the following: 310

410.17 Pavement Corrugations Pavement corrugations shall be in accordance with 606. 400

410.18 Pavement Smoothness

The pavement smoothness will be eval uated and determined in accordance with

401.18 410.19 Adjusted Points

When test results for mixture properties or density exceed the allowable tolerances, adjustment points will be assessed. The adjustment points will be used to calculate a quality assurance adjustment quantity, q, for the lot. Quality assurance adjustment points for smoothness w ill be in accordance with 401.19(c). 410 The adjustment for mixture properties and density are calculated as follows: q = 1.00 x (L x U x P/100)/MAF where: q = quality assurance adjustment quantity L = lot quantity 410.19 362 U = unit price for the material, $/ton P = total adjustment points The total quality assurance adjustments is to be calculated as follows: Q = Q s ™T m + q d) where: 420 Q = total quality assurance adjustment quantity Qs = quality assurance adjustment for smoothness as calculated in 401.19(c) qm = lot adjustments for mixtures qd = lot adjustments for density If the total adjustment points for a lot are greater than 15, the pavement will be evaluated by the Division of Materials and Tests. If the Contractor is not required to remove the mixture, quality assurance adjustments of the lot will be assessed or other corrective actions as determined by th e Division of Materials and Tests.

410.20 Appeals If the QC test results do not agree with the acceptance test results, a request, along

with the QC test results, may be made in writing for additional testing. Additional 410.20 364 testing may be requested for one or more of the following tests: binder content, 470 gradation, or MSG of the mixture samples, and bulk specific gravity of the density cores. The request for the appeal for MSG, BSG of the density cores or binder content and gradation shall be submitted within seven calendar days of receipt of the Department’s written results for that sublot. The sublot and specific tests shall be specified at the time of the appeal request. Only one appeal request per sublot is allowed. Once the appeal request has been granted, the Engineer will perform additional testing. The appeal results will replace all previo us test results for acceptance of mixture in accordance with 410.09 and density in acco rdance with 410.16. The results will be 480 furnished to the Contractor. The backup mixture samples or density cores will be tested in accordance with the following:

410.21 Method of Measurement 500

SMA mixtures will be measured by the ton of the type specified, in accordance with 109.01(b). The measured quantity will be divided by the MAF to determine the pay quantity. Joint adhesive will be measured by the linear foot in accordance with 109.01(a).

410.22 Basis of Payment

The accepted quantities for this work will be paid for at the contract unit price per ton for QC/QA – HMA, of the type specified, – SMA, complete in place. 510 Payment for furnishing, calibrating, operating the inertial profiler, and furnishing IRI profile information will be made in accordance with 401.18. Furnishing and operating the 16 ft straight edge shall be included in the cost of other pay items within this section. 410.21 365 Joint adhesive will be paid for by the linear foot, complete in place. Adjustments to the contract payment with respect to mixture, density, and smoothness for mixture produced will be included in a quality assurance adjustment 520 pay item. The unit price for this pay item will be $1.00 and the quantity will be in units of dollars. The quantity is th e total calculated in accord ance with 410.19. A change order will be prepared to reflect contract adjustments in accordance with 109.05. Payment will be made under: Pay Item Pay Unit Symbol Joint Adhesive, ____________ ................................................. LFT course type 530 QC/QA - HMA, _____, _____, _____, ______ mm, - SMA .... TON (ESAL (1))(PG(2))(Course(3))(Mix(4)) Quality Assurance Adjustment .................................................. DOL