Granite Construction 5/14/2020 - Laserfiche WebLink

I 1 The Contractor may use up to 20 percent RAP by total weight of HMA with no additional 2 sampling or testing of the RAP. The RAP shall be sampled and tested at a frequency of one 3 sample for every 1,000 tons produced and not less than ten samples per project. The 4 asphalt content and gradation test data shall be reported to the Contracting Agency when 5 submitting the mix design for approval on the QPL. The Contractor shall include the RAP as 6 part of the mix design as defined in these Specifications. 7 8 The grade of asphalt binder shall be as required by the Contract. Blending of asphalt binder 9 from different sources is not permitted. I 10 11 The Contractor may only use warm mix asphalt (WMA) processes in the production of HMA 12 with 20 percent or less RAP by total weight of HMA. The Contractor shall submit to the 13 Engineer for approval the process that is proposed and how it will be used in the 14 manufacture of HMA. 15 16 Production of aggregates shall comply with the requirements of Section 3-01. 17 Preparation of stockpile site, the stockpiling of aggregates, and the removal of aggregates 18 from stockpiles shall comply with the requirements of Section 3-02. I 19 20 5-04.2(1) How to Get an HMA Mix Design on the QPL 21 If the contractor wishes to submit a mix design for inclusion in the Qualified Products List I 22 (QPL), please follow the WSDOT process outlined in Standard Specification 5-04.2(1). 23 24 5-04.2(2) Mix Design —Obtaining Project Approval I 25 No paving shall begin prior to the approval of the mix design by the Engineer. 26 27 Nonstatistical evaluation will be used for all HMA not designated as Commercial HMA in 1 28 the contract documents. 29 30 Commercial evaluation will be used for Commercial HMA and for other classes of HMA in I 31 the following applications: sidewalks, road approaches, ditches, slopes, paths, trails, gores, 32 prelevel, and pavement repair. Other nonstructural applications of HMA accepted by 33 commercial evaluation shall be as approved by the Project Engineer. Sampling and testing I 34 of HMA accepted by commercial evaluation will be at the option of the Project Engineer. The 35 Proposal quantity of HMA that is accepted by commercial evaluation will be excluded from 36 the quantities used in the determination of nonstatistical evaluation. I 37 38 Nonstatistical Mix Design. Fifteen days prior to the first day of paving the contractor shall 39 provide one of the following mix design verification certifications for Contracting Agency 40 review; 41 42 • The WSDOT Mix Design Evaluation Report from the current WSDOT QPL, or one of I 43 the mix design verification certifications listed below. •44 • The proposed HMA mix design on WSDOT Form 350-042 with the seal and 45 certification (stamp &signature) of a valid licensed Washington State Professional I 46 Engineer. 47 • The Mix Design Report for the proposed HMA mix design developed by a qualified 48 City or County laboratory that is within one year of the approval date.** I 49 I 2020 PAVEMENT MAINTENANCE OVERLAY PAGE 43 OF 79 SPECIAL PROVISIONS WORK ORDER 3727 FEBRUARY 20,2020