2013 Concrete Pavement Construction at MnROAD Tom Burnham, P.E. Minnesota Department of Transportation TRB AFD40 Monthly Seminar September 12 th, 2013.

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Presentation transcript:

2013 Concrete Pavement Construction at MnROAD Tom Burnham, P.E. Minnesota Department of Transportation TRB AFD40 Monthly Seminar September 12 th, 2013 Office of Materials and Road Research

MnROAD 2013 Project Themes Innovation Preservation Sustainability

MnROAD 2013 Construction (June)  Cell 613: Maximum recycled content mix  7.5” Concrete pavement  High percentage (75%) of recycled concrete used as coarse aggregate in concrete mix  Innovative (narrow) pre-formed joint seals  Geotextile drains under dowel baskets  Cells : Fiber-reinforced bonded concrete overlay of asphalt (whitetopping)  4” FRC over 7” existing HMA (milled)  5” FRC over 6” existing HMA (milled)  Sealed vs unsealed joints  Cells 140, 240: Ultra-thin FRC unbonded concrete overlay of concrete  3” FRC over 7” existing PCC  Fabric interlayer (2 thicknesses)

MnROAD 2013 Construction (September/October)  Cell 39: Resurface pervious concrete overlay  Diamond grind existing 4” pervious concrete overlay to restore ride quality  Determine feasibility of process (clogging?)  Cell 32: Thin concrete pavement rehabilitation  Repairs on 5” concrete pavement constructed in 2000  Full-depth half panel replacements  Innovative load transfer devices (CoVex dowels)  Retrofit dowels (round and plate)  Diamond grind surface to remove significant joint faulting

MnROAD Cell 613 High Percentage Recycle Concrete Aggregate Mix 7.5” PCC 75% coarse agg= Recycled PCC Var thickness Class 1 (2008) Silty/Clay Var thickness (5”?) Class 5 (2008)

MnROAD Cell 613 Geotextile joint drains RoaDrain geotextile supplied by Tensar

MnROAD Cell 613 ¼” Preformed Seals Seals supplied by D.S. Brown

MnROAD Cells Fiber Reinforced Concrete Overlay of Asphalt (Whitetopping) 5” FRC 6 lbs/yd 3 Propex Sealed/unseal jts 6” HMA Silty/Clay 4” FRC 6 lbs/yd 3 Propex Sealed/unseal jts 7” HMA Silty/Clay

MnROAD Cells

Fiber Reinforced Concrete Performance-based specification (20% residual strength): ASTM C1609: Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam With Third-Point Loading) Element Materials Technology, June 5, 2013

MnROAD Cells 140 & 240 Ultra-thin Fiber Reinforced Concrete Overlay of Existing Concrete Pavement 3” FRC 6’x6’ panels, 6 lb/yd 3 Propex Fabric interlayer (std and thin) Silty/Clay Var thickness PCC 5.5-7” design (1993) 5” Class 5 Sp (1993) Silty/Clay

MnROAD Cells 140 & 240 Nonwoven Geotextile Fabric Interlayer Used glue to secure standard/thin fabric to existing concrete Fabric supplied by Propex

MnROAD Cells 140 & 240 Fibers supplied by Propex

MnROAD Cells 140 & 240 Fiber Optic Sensors Partnership with Missouri University of Science and Technology and NDSU

MnROAD Cells 140 & 240 Fiber Optic Sensors Partnership with Missouri University of Science and Technology and NDSU

MnROAD Cell 39 Thin Pervious Bonded Concrete Overlay 4” Pervious PCC (2008) 6”PCC (1993) 5” CL 5 Silty/Clay

MnROAD Cell 39 Thin Pervious Bonded Concrete Overlay May 2009 Constructed with rough ride Numerous panel cracks, areas of debonding Scheduled to be diamond ground to improve ride quality Will assess ability of pervious pavements to be diamond ground (clogging?)

MnROAD Cell 32 Rehabilitation of 5 inch thick concrete pavement Half panel full-depth concrete replacement, retrofit dowel bars and plates, diamond grinding to improve ride quality

PNA CoVex Plate Dowels