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337 -2.6.2 Cellulose Fibers: Use cellulose fibers meeting the following <br />requirements: <br />1 . Fiber length ............. 0.25 inch [6.0 mm] (maximum) <br />2. Sieve Analysis <br />a. Alpine Sieve Method <br />Percent passing No. 100 [150 µm] sieve60 -80 <br />b. Ro -Tap Sieve Method <br />Percent passing No. 20 [850µm] sieve80 -95 <br />Percent passing No. 40 [425µm] sieve45 -85 <br />Percent passing No. 100 [150µm sieve5 -40 <br />3. Ash Content: ... ........... 18% non- volatiles (±5%) <br />4. pH: .................................................... 7.5 (± 1.0) <br />5. Oil Absorption:......... 5.0 (± 1 .0) (times fiber weight) <br />6. Moisture Content: ........................... 5.0 (maximum) <br />Provide certified test results for each batch of fiber material indicating <br />compliance with the above tests. <br />337 -3 General Composition of Mixes. <br />337 -3.1 General: Use a bituminous mixture composed of aggregate (coarse, fine, or <br />a mixture thereof), asphalt rubber binder, and in some cases, fibers and /or hydrated lime. <br />Size, uniformly grade and combine the aggregate fractions in such proportions that the <br />resulting mix meets the requirements of this Section. The use of RAP material will not be <br />permitted. <br />337 -3.2 Specific Component Requirements by Mix: <br />337 -3.2.1 FC -5: <br />337 - 3.2.1.1 Aggregates: Use an aggregate blend which consists of <br />either 100% crushed granite or 100% crushed Oolitic limestone. <br />In addition to the requirements of Section 901, meet the <br />following coarse aggregate requirements. Use either crushed granite or crushed limestone. <br />Use crushed limestone from the Oolitic formation, which contains a minimum of 12% non- <br />; carbonate material (as determined by FM 5 -510), and has been approved for this use. <br />In addition to the requirements of Section 902, meet the <br />following fine aggregate requirements. Use either crushed granite screenings, or crushed <br />Oolitic limestone screenings for the fine aggregate. <br />337 - 3.2.1.2 Asphalt Binder: Use an ARB -12 asphalt rubber binder. If <br />called for in the Contract Documents, use a PG 76 -22 asphalt binder. <br />337 - 3.2.1.3 Hydrated Lime: Add the lime at a dosage rate of 1.0% <br />by weight of the total dry aggregate to mixes containing granite. <br />337 - 3.2.1.4 Fiber Stabilizing Additive: Add either mineral fibers at a <br />dosage rate of 0.4% by weight of the total mix, or cellulose fibers at a dosage rate of <br />0.3% by weight of total mix. <br />337 -3.2.2 FC -9.5 and FC -12.5: <br />337 - 3.2.2.1: Aggregates: In addition to the requirements of <br />Sections 901 and 902, use coarse and fine aggregate components which also meet the <br />aggregate requirements for an SP -9.5 or SP -12.5 Superpave mix, respectively, as specified <br />in Section 334. <br />Use an aggregate blend that consists of crushed granite, <br />crushed Oolitic limestone, or a combination of the two. (Aggregates other than those listed <br />March 2007 01000 -73 03- 4122.D <br />