Ariston Pacific, Inc. 5/9/2016 - Laserfiche WebLink

1 1 2 The Contractor may choose to utilize recycled asphalt pavement (RAP) or reclaimed 3 asphalt shingles (RAS) in the production of HMA. The RAP may be from pavements 4 removed under the Contract, if any, or pavement material from an existing stockpile. 5 The RAS may be from reclaimed shingles. 6 7 The Contractor may use up to 20 percent RAP by total weight of HMA with no additional 8 sampling or testing of the RAP. If greater than 20 percent RAP by total weight of HMA 9 or any amount of RAS is utilized in the production of HMA, the Contractor shall sample 10 and test the RAP and RAS during stockpile construction in accordance with WSDOT 11 FOP for AASHTO T 308 for determination of asphalt binder content and WSDOT FOP 12 for WAQTC/AASHTO T 27/T 11 for gradation of the aggregates. The RAP shall be 13 sampled and tested at a frequency of one sample for every 1,000 tons produced and 14 not less than ten samples per project. The RAS shall be sampled and tested at a 15 frequency of one sample for every 100 tons produced and not less than ten samples per 16 project. The asphalt content and gradation test data shall be reported to the Contracting 17 Agency when submitting the mix design for approval on the QPL. If utilized, the amount 18 of RAS shall not exceed 5-percent of the total weight of the HMA. The Contractor shall 19 include the RAP and RAS as part of the mix design as defined in these Specifications. 20 21 The grade of asphalt binder shall be as required by the Contract. Blending of asphalt 22 binder from different sources is not permitted. 23 24 The Contractor may only use warm mix asphalt (WMA) processes in the production of 25 HMA with 20 percent or less RAP by total weight of HMA and no RAS. The Contractor 26 shall submit to the Engineer for approval the process that is proposed and how it will be 27 used in the manufacture of HMA. 28 29 When the Contracting Agency provides aggregates or provides a source for the 30 production of aggregates, the Contract Provisions will establish the approximate 31 percentage of asphalt binder required in the mixture for each class of HMA. 32 33 Production of aggregates shall comply with the requirements of Section 3-01. 34 35 Preparation of stockpile site, the stockpiling of aggregates, and the removal of 36 aggregates from stockpiles shall comply with the requirements of Section 3-02. 37 38 5-04.3(1) Hot Mix Asphalt Mixing Plant I 39 In the first paragraph, the last sentence of item number 4 is revised to read: 40 41 The Contractor shall provide for the setup and operation of the field testing facilities of 42 the Contracting Agency as provided for in Section 3-01.2(2). 43 44 The first paragraph is supplemented with the following: 45 46 6. Equipment for Processing RAP and RAS. When producing HMA for mix designs 47 with greater than 20 percent RAP by total weight of HMA or any amount of RAS the 48 HMA plant shall be equipped with screens or a lump breaker to eliminate oversize 49 RAP/RAS particles from entering the pug mill or drum mixer. 50 51 5-04.3(3)A Material Transfer Device/Vehicle 52 The first paragraph is supplemented with the following new sentence: I AMENDMENTS TO THE 2014 STANDARD SPECIFICATIONS BOOK Revised: 8/3/15