Granite Construction 5/14/2020 - Laserfiche WebLink

I 1 Compaction shall take place when the mixture is in the proper condition so that no undue 2 displacement, cracking, or shoving occurs. Areas inaccessible to large compaction I 3 equipment shall be compacted by other mechanical means. Any HMA that becomes loose, 4 broken, contaminated, shows an excess or deficiency of asphalt, or is in any way defective, 5 shall be removed and replaced with new hot mix that shall be immediately compacted to I 6 conform to the surrounding area. 7 8 The type of rollers to be used and their relative position in the compaction sequence shall 1 9 generally be the Contractor's option, provided the specified densities are attained. Unless 10 the Engineer has approved otherwise, rollers shall only be operated in the static mode when 11 the internal temperature of the mix is less than 175°F. Regardless of mix temperature, a I 12 roller shall not be operated in a mode that results in checking or cracking of the mat. Rollers 13 shall only be operated in static mode on bridge decks. 14 I 15 5-04.3(10)B HMA Compaction —Cyclic Density 16 Low cyclic density areas are defined as spots or streaks in the pavement that are less than 17 90 percent of the theoretical maximum density. At the Engineer's discretion, the Engineer 18 may evaluate the HMA pavement for low cyclic density, and when doing so will follow 19 WSDOT SOP 733. A $500 Cyclic Density Price Adjustment will be assessed for any 500- 20 foot section with two or more density readings below 90 percent of the theoretical maximum 21 density. 22 I 23 5-04.3(10)C Vacant 24 25 5-04.3(10)D HMA Nonstatistical Compaction I 26 27 5-04.3(10)D1 HMA Nonstatistical Compaction — Lots and Sublots 28 HMA compaction which is accepted by nonstatistical evaluation will be based on acceptance 1 29 testing performed by the Contracting Agency dividing the project into compaction lots. 30 31 A lot is represented by randomly selected samples of the same mix design that will be 32 tested for acceptance. A lot is defined as the total quantity of material or work produced for 33 each Job Mix Formula placed. Only one lot per JMF is expected. A sublot shall be equal to 34 one day's production or 400 tons, whichever is less except that the final sublot will be a 35 minimum of 200 tons and may be increased to 800 tons. Testing for compaction will be at 36 the rate of 5 tests per sublot per WSDOT T 738. 37 38 The sublot locations within each density lot will be determined by the Engineer. For a lot in 39 progress with a CPF less than 0.75, a new lot will begin at the Contractor's request after the I 40 Engineer is satisfied that material conforming to the Specifications can be produced. 41 42 HMA mixture accepted by commercial evaluation and HMA constructed under conditions I 43 other than those listed above shall be compacted on the basis of a test point evaluation of 44 the compaction train. The test point evaluation shall be performed in accordance with 45 instructions from the Engineer. The number of passes with an approved compaction train, 46 required to attain the maximum test point density, shall be used on all subsequent paving. 47 48 HMA for preleveling shall be thoroughly compacted. HMA that is used to prelevel wheel ruts 49 shall be compacted with a pneumatic tire roller unless otherwise approved by the Engineer. 2020 PAVEMENT MAINTENANCE OVERLAY PAGE 58 OF 79 SPECIAL PROVISIONS I WORK ORDER 3727 FEBRUARY 20,2020