QPL Mix Designs: Streamlining HMA Mix Design Approval Process
Detailed information about changes in the HMA mix design approval process, focusing on contractors now paying for testing, development of Standard Practice QC-8, communication protocols, requirements for WSDOT Qualified Products List submission, and the role of the Materials Laboratory and QPL Engineer.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. Download presentation by click this link. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
E N D
Presentation Transcript
2015 27th Annual WAPA/WSDOT Asphalt Pavement Training Conference HMA Mix Designs on the QPL Steve Davis Bituminous Materials Engineer State Materials Laboratory
QPL Mix Designs Background Getting away from cost recovery Looking at ways for contractors to have WSDOT approved designs for non WSDOT purposes Contractor will now pay for testing Unused mix designs Secondary Supplier designs Meetings with WAPA, Standard Practice QC-8 was developed Included in April 2015 amendment package
QPL Mix Designs What this means for the Regions All communication regarding entire design process will now be between the Contractor and HQ Materials Laboratory All HMA Mix Designs will be referenced from the QPL to the contract. Same as previous process Production history must be in compliance with Standard Specification 5- 04.3(11)D
QPL Mix Designs What this means for the Contractor All communication regarding entire design process will now be between the Contractor and HQ Materials Laboratory Initial contact will be the QPL Engineer to start the process Designs will be allowed for use outside of WSDOT contracts
QPL Mix Designs What this means for the Contractor SUBMISSION TO THE WSDOT QUALIFIED PRODUCTS LIST Once the HMA mix design has been developed, the Contractor/Producer shall contact the QPL Engineer (www.wsdot.wa.gov/Business/MaterialsLab/QPL.htm) or (360) 709-5442 to initiate the HMA mix design submittal process. To initiate the mix design submittal process the Contractor/Producer shall provide the following: Company contact and billing information A completed copy of WSDOT Form 350-042EF and test reports in accordance with Section 5-04.3(7)A1 of the Standard Specifications A completed QPL Application ASA Report for the aggregate source(s) QPL Contractor/Producer Product Information page(s) for the PGAB and the anti-stripping additive
QPL Mix Designs What this means for the Materials Laboratory The QPL Engineer will provide the following to the Contractor/Producer: QPL evaluation tracking number Initial letter detailing mix design evaluation Cost sheet for mix design evaluation detailing submittal requirements and associated charges After payment is received for the mix design evaluation the QPL Engineer shall provide: Assigned delivery date of materials and documentation to State Materials Laboratory Estimated date of completion Final letter indicating QPL status
QPL Mix Designs What this means for the Materials Laboratory Preference will be given to mix designs submitted for WSDOT contracts. HMA mix design evaluation for WSDOT contracts shall be completed within 25 calendar days of acceptance by the State Materials Laboratory. Acceptance will be determined when all required documentation, materials and payment have been received at the State Materials Laboratory. HMA mix design evaluations submitted that are not for WSDOT contracts will be completed within approximately 40 calendar days of acceptance by the State Materials Laboratory. The State Materials Laboratory reserves the right to limit the number of HMA mix design evaluations accepted that are not for WSDOT contracts at any given time. Workload and staffing will dictate the number of HMA mix designs accepted at one time.
QPL Mix Designs Mix Design Evaluation The HMA mix design submitted by the Contractor/Producer will be evaluated by the State Materials Laboratory in accordance with Section 9-03.8(2) and 9- 03.8(6) of the Standard Specifications. HMA mix designs will be placed on the QPL provided they meet the requirements of Section 9-03.8(2) and 9-03.8(6) of the Standard Specifications. Voids in Mineral Aggregate (VMA) must be within 1.5% of the minimum specification in accordance with Section 9-03.8(2) of the Standard Specifications for the class of HMA evaluated. % Gmm at N design must be within 1.5% of the specification in Section 9- 03.8(2) of the Standard Specifications for the class of HMA evaluated. Voids Filled with Asphalt (VFA) in Section 9-03.8(2) will not be part of the mix design evaluation. A mix design that fails to meet the requirements listed in Section 7.2, 7.2.1, and 7.2.2 will not be accepted or placed on the QPL
QPL Mix Designs QPL Listing Page The Contractor/Producer will be issued a QPL mix design record providing the mix design is in compliance with Section 9 of this Standard Practice. The QPL listing for HMA mix designs will show the following information: Company name HMA Class Aggregate Source(s) PGAB Grade PGAB Supplier Anti-stripping additive brand and quantity (if applicable)
QPL Mix Designs Referencing Mix Designs from QPL to Contracts Requests for reference HMA mix designs for non WSDOT projects will be completed on WSDOT Form 350-041EF and emailed to BituminousMaterials@wsdot.wa.gov. Reference HMA mix design reports will be issued for new mix designs on active and awarded WSDOT contracts once accepted and placed on the QPL. Reference HMA mix design reports will be issued for current mix designs on active and awarded WSDOT contracts provided the HMA production history is in compliance with Standard Specifications Section 5-04.3(11)D.
QPL Mix Designs Removal From the QPL HMA mix designs will be automatically removed from the QPL in accordance with Standard Specifications Section 5-04.3(7)A. HMA mix designs may be removed from the QPL if found in nonconformance with the Standard Specifications or this Standard Practice. Causes for removal from the QPL may include, but are not limited to the following: Failure to comply with requirements of Standard Practice QC 8. HMA mix designs that are out of compliance in accordance with Section 5- 04.3(11)D of the Standard Specifications. Failure to notify WSDOT of changes in HMA production. Removal at the request of the Contractor/Producer
QPL Mix Designs Designs Grandfathered onto the QPL HMA mix designs that have been completed in the past 24 months (April 2013 to present), will be placed on the QPL provided: The original design meets the requirements of Section 9-03.8(2) and 9- 03.8(6) of the Standard Specifications. Voids in Mineral Aggregate (VMA) must be within 1.5% of the minimum specification in accordance with Section 9-03.8(2) of the Standard Specifications for the class of HMA evaluated. % Gmm at N design must be within 1.5% of the specification in Section 9-03.8(2) of the Standard Specifications for the class of HMA evaluated. HMA production history is in compliance with Standard Specifications Section 5-04.3(11)D.
QPL Mix Designs Contractor Costs QPL Application & Admin Fee General Mix Design Charge (with one set of Hamburg and one set of IDT specimens) Estimated Average Cost Typical Mix Design Additional Cost Estimate Information General Mix Design Charge with Lottman testing in lieu of Hamburg and IDT Secondary Supplier Design* High RAP RAS * $1350 savings if more than one mix design is submitted at the same time. Same source, JMF, etc. $550 $7,500 $8050 Add $450 per mix design $6,150* Add $800 Add $800
Questions? davissj@wsdot.wa.gov (360)709-5424
