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S.P. 8680-165 2011 MnROAD Reconstruction

S.P. 8680-165 2011 MnROAD Reconstruction. Pre-Letting Conference April 8, 2011. Cell 105-205 & 6. XXXXX. Low Volume Road. XXXX. Cell 63 & 96. Stockpile Area. Mainline (I-94). Secured Area Roadway Closed to Traffic. XX. Demo Slab (200’). Construction Timeline.

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S.P. 8680-165 2011 MnROAD Reconstruction

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  1. S.P. 8680-1652011 MnROAD Reconstruction Pre-Letting Conference April 8, 2011

  2. Cell 105-205 & 6 XXXXX Low Volume Road XXXX Cell 63 & 96 Stockpile Area Mainline (I-94) • Secured Area • Roadway Closed to Traffic XX Demo Slab (200’)

  3. Construction Timeline • Construction will begin July 11, 2011 or 8 days after notice to proceed, whichever is later • Construction Completion Date is September 1, 2011

  4. Removals Existing Cells 4” 5+” 12*+” * Subgrade will be excavated to 4% cross slopes.

  5. Grading Work • OGAB Special, subgrade cross slope 4%, top of base cross slope 2% • Base material to minimum 6” at centerline. • OGAB Special will be continued and day lighted into ditches. • Demonstration Slab (Demo Slab)= 6” OGAB Special

  6. Instrumentation • Days needed for instrumentation (Mn/DOT) after • - Excavation completion cell 6 (2 days) • - Aggregate Base installed cell 6 (3 days) • - Removal of concrete and PASSRC cell 5 (2 days) • - Install geotextile fabric cell 5 (2 days)

  7. Concrete Paving – 3 Mixes • Cell 505 and 605 Pavement Mix Design shall comply with the following • CA-15 coarse aggregate gradation. • Cell 306 Pavement Mix Design shall comply with the following: • CA-35 coarse aggregate gradation. • Cell 406 Pavement Mix Design shall comply with the following: • Either a CA-15 or CA-35 coarse aggregate gradation. • Cell 505, 605, 306, 406 shoulders, and Demonstration Slab: • Provide Roller Compacted Concrete (RCC) as per specifications.

  8. Finished Textures Cell 306 and 406 – Longitudinal Tining Cell 505 and 605 – Transverse Broom Cell 63 and 96 – Traditional Grind

  9. Demonstration Slab • Located in the stockpile area • 200’ long • Same operations as shoulders on cell 6 * 4” RCC Concrete * 6” OGAB Special * Installed at 4% cross slope. • Goal for the demo slab * Experience with materials * Experience with RCC placement * Experience with OGAB Special.

  10. Shoulders • Cell 505 and 605 • RCC Placed directly on existing materials. • Wick Drains to be installed prior to paving • Cell 505 shoulders will be jointed similarly to mainline • Cell 605 – no joints • Cell 306 and 406 • RCC placed on OGAB Special • Cell 306 shoulders will be jointed similarly to mainline. • Cell 406 – no joints

  11. Cell 63 and 96 • 4” x 5’ x 6’ misc. concrete panel repair in cell 63. • Both cells 63 and 96 will receive a traditional concrete grind

  12. Extra Research Quantities Demonstration Slab • 4” RCC pavement 8’ x 200’ • 6” OGAB special 10’ x 202’ Research Samples • 1 cubic yard extra of each concrete mix (3 mixes total) • 15 cubic yards extra of OGAB Special

  13. Questions? Melissa K. Cole, P.E. MnROAD Forensic Engineer (651) 366-5432 melissa.cole@state.mn.us

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