Project Selection Cody Brand | Soils Engineer October 12, 2018 - - PowerPoint PPT Presentation

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Project Selection Cody Brand | Soils Engineer October 12, 2018 - - PowerPoint PPT Presentation

Feb 10, 2023 137 likes •407 views

Project Selection Cody Brand | Soils Engineer October 12, 2018 mndot.gov Overview Needs Determination Project Timing Mix of Fixes Chip Seals 10/15/2018 mndot.gov 2 Needs Determination 10/15/2018 mndot.gov 3 Needs

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SLIDE 1

Project Selection

Cody Brand | Soils Engineer October 12, 2018

mndot.gov

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SLIDE 2

Overview

  • Needs Determination
  • Project Timing
  • Mix of Fixes
  • Chip Seals

10/15/2018 mndot.gov 2

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SLIDE 3

Needs Determination

10/15/2018 mndot.gov 3

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0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% NHS NON-NHS NHS NON-NHS NHS NON-NHS NHS NON-NHS NHS NON-NHS NHS NON-NHS NHS NON-NHS NHS NON-NHS NHS NON-NHS DISTRICT 1 DISTRICT 2 DISTRICT 3 DISTRICT 4 DISTRICT 6 DISTRICT 7 DISTRICT 8 METRO STATEWIDE AVG.

2017 "GOOD" Ride Quality Index (RQI)

Needs Determination

10/15/2018 mndot.gov 4 NHS TARGET: 65% OR GREATER NON-NHS TARGET: 60% OR GREATER

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0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028

NHS PAVEMENT CONDITIONS (with STIP)

47 MILES 232 MILES 10/15/2018 mndot.gov 5 “POOR” TARGET: 2% OR LESS “GOOD” TARGET: 65% OR GREATER

Needs Determination

“FAIR” “POOR” (RQI < 2.1) “GOOD” (RQI > 3.0)

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SLIDE 6

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028

NHS PAVEMENT CONDITIONS (without Programed Work)

“POOR” (RQI < 2.1) “FAIR”

10/15/2018 mndot.gov 6

“GOOD” (RQI > 3.0)

Needs Determination

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Project Timing

10/15/2018 mndot.gov 7

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Project Timing

10/15/2018 mndot.gov 8

TIME / TRAFFIC PAVEMENT CONDITION

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10/15/2018 mndot.gov 9

  • Measures include:
  • Ride Quality Index (RQI)
  • Remaining Service Life (RSL)
  • Surface Rating (SR)
  • Crack Counts

Defining “Pavement Condition”

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Project Timing

10/15/2018 mndot.gov 10

TIME / TRAFFIC PAVEMENT CONDITION Surface Treatment Major Rehabilitation

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Mix of Fixes

  • Major Rehabilitation
  • Cold In-Place Recycle
  • Full Depth Reclamation
  • Concrete Overlay & Whitetopping
  • Resurfacing
  • Mill & Overlay
  • Surface Treatments

10/15/2018 mndot.gov 11

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Crack Propagation through Bituminous Pavement

10/15/2018 mndot.gov 12

Bituminous Gravel Bituminous Concrete

30% of Bit. pavements have concrete underneath 60% are > 50 Years Old

Bituminous Gravel

75% are > 50 Years Old

Time Time Time Old Bit.

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Mill & Overlay

10/15/2018 mndot.gov 13

Time

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Cold In-Place Recycle

10/15/2018 mndot.gov 14

Time

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Full Depth Reclamation

10/15/2018 mndot.gov 15

Time

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Concrete Overlay / Whitetopping

10/15/2018 mndot.gov 16

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Major Rehabilitation

10/15/2018 mndot.gov 17

TIME / TRAFFIC PAVEMENT CONDITION

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Surface Treatment

10/15/2018 mndot.gov 18

Time Time Micro-mill & UTBWC

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Micro-Milling with Surface Treatments

10/15/2018 mndot.gov 19

Google: “MnDOT Micro Milling”

40 60 80 100 120 140 160 180 Before Micro Mill After Micro Mill After Micro Surfacing After 1 Year After 2 Years After 3 Years After 4 Years Average IRI (inches/mile)

Micro Milling with Micro Surfacing

TH64 US 12 US 10

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Resurfacing

10/15/2018 mndot.gov 20

TIME / TRAFFIC PAVEMENT CONDITION

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Mix of Fixes

10/15/2018 mndot.gov 21

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Chip Seals

  • Minnesota Seal Coat Handbook:

1. Primary Benefit – Protect Pavement from Weather

  • Sun, Wind, and Water causes Oxidation

2. Secondary Benefit – Reduces Raveling / Increases Friction

  • Raveling – loss of fines from the pavement surface
  • Caused by Traffic, Plowing, and Weather

10/15/2018 mndot.gov 22

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Chip Seals

  • Two seal coat test sections constructed in D8
  • TH 19 from Marshall to JCT. TH 67
  • 2001 – Construction – Mill to Concrete, and place 5” Bituminous
  • 2009 – Seal Coat (with 2 control sections)
  • 2016 RQI – No difference between sections
  • TH 23 from US 71 Split to New London
  • 2003 / 2004 – Construction – Regrade, 24” Base, 6” Bituminous
  • 2011 – Seal Coat (with 7 control sections)
  • 2016 RQI – No difference between sections

10/15/2018 mndot.gov 23

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Chip Seals

10/15/2018 mndot.gov 24

MN 56 in D6, Chip Seal Test Section

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Thank you

Cody Brand

cody.brand@state.mn.us

10/15/2018 mndot.gov 25