HMA Update 53 rd Annual Asphalt Paving Conference Curtis Bleech HMA Operations Engineer February 2009
MDOT Mission Providing the highest quality integrated transportation services for economic benefit and improved quality of life.
Items to Cover 2009 PWL Specification FUSP504(C) Mix Design Specification FUSP 501(F) Ride Quality Specification - FUSP 502(P) HMA Lab & Technician Qualification Program CQP
Items to Cover 2009 Round Robin Core Dry Shoulder Density 2010 Standard Specifications for Construction RAP HMA Committees
2009 PWL Specification No changes from the 2008 Specification Changes will likely be coming for 2010
2009 Superpave Mixtures Specification No changes from the 2008 Specification Changes will likely be coming for 2010 - Gyration Levels will be looked at - Possibility of reducing the number of mix levels; i.e. may combine E1& E3 for ex. - Restricted Zone
Pavement Ride Quality FUSP 502(P) FHWA:APPR:02-01-08 Uses IRI for Acceptance SP Allows use of PROVAL Bridge Deck Ride Spec. Pilot Requires PROVAL PROVAL will be method to identify bumps vs. California Profilograph; PROVAL is free 2009 Ride Rodeo PROVAL recommended method to use for trouble shooting ride issues
HMA Lab & Technician Qualification Program 2008 Implementation Round Robin Quality Manual Lab Assessment Qualified Technicians
HMA Lab & Technician Qualification Program Basic Components of the HMA LQP QA lab requirements AMRL Assessment & Proficiency Sampling Completion of a Lab Quality Manual (QM) Annual Evaluation by C&T Staff for compliance to the QM Participation in C&T administered HMA Round Robin Employ Qualified Technicians
HMA Lab & Technician Qualification Program Basic Components of the HMA LQP QC lab requirements Completion of a Lab Quality Manual (QM) Annual Evaluation by internal or external source for compliance to the QM Participation in C&T administered HMA Round Robin Employ Qualified Technicians
HMA Lab & Technician Qualification Program Basic Components of the HMA LQP HMA QA Technicians Must maintain certification through MDOT approved training at Ferris State University Successfully complete an annual IAT for HMA for appropriate mixture type (Superpave or Marshall)
HMA Lab & Technician Qualification Program Basic Components of the HMA LQP HMA QC Technicians Must maintain certification through MDOT approved training at Ferris State University Successfully complete an annual internal or external evaluation for appropriate mixture type (Superpave or Marshall) Note: the IAT process can be used as a basis for this even though it won t be administered by MDOT
HMA Lab & Technician Qualification Program Basic Components of the HMA LQP Maintaining Records HMA Unit at C&T will maintain the database Disqualification (Authority of Engineer of C&T) Lab Facilities Failure to correct deficiency within 20 days will result in notification to the Engineer of Const. & Technology Technicians Falsifying data Failure to meet the IAT program requirements Failure to obtain recertification through Ferris
Construction Quality Partnership 2009 Pilot Projects with Training Initiative SP Requiring Specific Training MDOT & Contractor Personnel Req d prior to start of constr. activities There is a cost
Construction Quality Partnership (CQP)
CQP & HMA Pilot Projects On-line Flagger Training www.onlineflagger.com 4 hours Apprx. $55 MDOT: 1. Project Inspector 2.Proj. Engr. Contractor: 1. Traffic Regulator 2.Foreman 3. Field Superintendent
CQP & HMA Pilot Projects "Components of Compaction http://training.hotmix.org/index.php?productid=360 45 minutes Apprx. $55 MDOT 1. Project Inspector 2. Project Engineer Contractor 1. Roller Operator 2. Foreman 3. QC Density Specialist
2009 Round Robin 2009 Round Robin is Underway 2/17-2/20 #1 sample pickup 3/13 #1 test results due from labs 3/23 #1 test results resp. & request for explanation of variances 3/30 #1 lab written response to committee due 4/6 #1 Evaluation of response and email back to lab 4/10 #2 sample pickup 4/17 #2 test results due from labs 4/22 #2 test results resp. & request for explanation of variances 4/29 #2 lab written response to committee due 5/4 Final evaluation
Core Dry Pilot Non-destructive Faster test results Phase 1 - Lansing C&T (2008) Phase 2 C&T Laboratory Evaluation Phase 3 Region Evaluation Data Comparison Time Comparison Cost Comparison
Shoulder Density HMA Tech. Comm. Tiered Approach HMAOC Approved Concept Draft Concept Has Been Developed Details & Specification to be worked out
Draft Tier 1 Designed and constructed according to AASHTO standards and equivalent structurally to mainline Applicability: When expected design ESALS are equivalent to mainline. Examples HOV and HOT Lanes, or when mobility and maintenance of traffic for construction dictate. Density target = 92% Details: Shoulders could be paved either integrally or separate AV = 4% or 3%
Draft Tier 2 Shoulders Paved Separate Designed and constructed utilizing existing sub-base and base conditions with minor or no improvements. Details: Separate AV = 3% Density target =???
Draft Tier 3 Shoulders Paved Integral Designed and constructed utilizing existing sub-base and base conditions with minor or no improvements. Details: Integral AV = 4% Separate shoulder populations for density Density target =??
2010 Standard Specifications for Construction Division 5 MDOT Draft Revisions into Trauner Comm s. Review Trauner Language Drafts to MITA Impasse Issues Final Version Ready for use in 2011 Construction Season
Recycled Asphalt Pavement (RAP) HMA is 100% Recyclable 2008 Recycled Apprx. 1.2 million Tons Sustainability Shingles Specification
HMA Committees Hot Mix Asphalt Operations Committee HMA Technical Committee HMA Data Committee HMA Research Committee HMA Training Committee
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