Safer, Smarter, Sustainable Pavements through Innovative Research. Jerry Geib March 28, 2018

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1 Safer, Smarter, Sustainable Pavements through Innovative Research Jerry Geib March 28, 2018

2 TPF-5(375) National Pavement Preservation Study 3 years at $50k/year

3 MN weather MnDOT site Ride Data

4 4% coldest population 4M Minnesotans 2.9M other Americans 8.8M Canadians 87M Russians 108M Chinese

5 Low Temperature Cracking Development of SuperPave Original MnROAD Test Sections (PG 64-22, PG 58-28) 1999 MnROAD Test Cells (PG 58-28, PG 58-34, PG 58-40) Linear Feet Cell 1 Cell 2 Cell 3 Cell 4 Cell 14 Cell 15 Cell 16 Cell 17 Cell 18 Cell 19 Cell 20 Cell 21 Cell 22 Cell 23 = 5 Year (PG 58-28) = 10 Year (PG 64-22) = 10 Year (PG 58-28) February 2, F

6 Jan. 4, F in Embarras, MN

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12 National Pavement Preservation Study Mille Lacs County Rum River Bridge RP Pease US-169 High Volume Road 4 mile section MnROAD CSAH 8 Low Volume Road 2.5 mile section RP 185.3

13 National Pavement Preservation Study (Northern Test Sections) Northern High Traffic Preservation on US-169 City of Pease City of Milaca ---> (4 miles North) MP 188 MP Control 27 Thinlay Overlay (ABR over Chip Seal (FA 2.5)) 26 Thinlay Overlay (ABR) 25 Thinlay Overlay (HiMA) 24 Ultra Thin Bonded Wearing Coarse N 23 Thinlay Overlay (Virgin) 22 Thinlay Overlay (ABR with Delta S) starts 1/2 mile from US-169 CSAH - 8 (WB) CSAH - 8 (EB) Control 20 Control - Low IRI 19 Convensional Fog Seal 18 Control 17 Rejuvenating Fog Seal 16 Control 15 Control 14 Control 13 Scrub Seal (FA 2.5) 12 Microsurfacing (Type II) over Scrub Seal (FA 2.5) 11 Microsurfacing (Type II) over Fibermat Chip Seal (FA 2.5) Minnesota DOT Road Research Project (MnROAD) National Center for Asphalt Technology (NCAT) US-169 NB Lane CSAH-8 EB and WB Lanes 5 miles South of Milaca - Just East of Pease - Mille Lacs County 1/10 mille Test Sections Control Control Control Thinlay Overlay (ABR over Chip Seal (FA 2.5)) Thinlay Overlay (ABR over Scrub Seal (FA 2.5)) Thinlay Overlay (ABR over fibermat (FA 2.5)) Rejovenating Fog Seal with black diamond dust Conventional Fog Seal with black diamond dust Double Microsurfacing (Type II over Type II) Microsurfacing (Type II) Microsurfacing (Type II) over crack seal and Transverse Mastic Scrub Seal (FA2.5) Microsurfacing (Type III) over Scrub Seal (FA 2.5) Microsurfacing (Type III) over Fibermat Chip Seal (FA 2.5) Fibermat Chip Seal (FA 2.5) Triple Chip Seal (FA 2 over FA 2.5 over CA-70) Double Chip Seal (FA 2 over FA 2.5) Microsurfacing (Type-III) over Single Chip Seal (FA 2.5) Single Chip Seal (FA 2.5) Single Chip Seal (FA2.5) over Crack Seal / Transverse Mastic Crack Seal / Transverse Mastic Open Control Thinlay Overlay (4.75 mm with RAP and RAS) Delta S Ultra Thin Bonded Wearing Coarse Control Control Control Thinlay Overlay (4.75 mm with RAP and RAS) Thinlay Overlay (4.75 mm) Control Northern Low Traffic Preservation CSAH-8 10 Fibermat Chip Seal (FA 2.5) 9 Double Microsurfacing (Type II over Type II) MP Microsurfacing (Type II with fibers)) 7 Microsurfacing (Type II) over Crack Seal / Transverse Mastic 6 Microsurfacing (Type-II) over Single Chip Seal (FA 2.5) Layers 7.5" HMA PG58-28 CSAH-8 Traffic 400 ADT Not to Scale Each Section 528 feet long Layers 7.5" HMA PG58-28 US-169 Traffic 1800 ADT 5 Triple Chip Seal (FA 2 over FA 2.5 over CA-50/70) 4 Double Chip Seal (FA 2 over FA 2.5) 12" Granular Base Section Numbering so on 12" Granular Base 3 Single Chip Seal (FA 2.5) Clay Clay Subgrade 8001 Subgrade 2 Single Chip Seal (FA2.5) over Crack Seal / Transverse Mastic Construcited Construcited so on 1 Crack Seal / Transverse Mastic Treatments - August 2016 Treatments - August Control - High IRI ABR - Asphalt Binderr Replacement MP Passing Driving US-169 Northbound 13

14 National Pavement Preservation Study Goals National Study (Climatic zones) Provide consistently collected data / analysis Quantify the life extending benefits Improve and/or extend the pavement life Cost effectiveness

15 PreTreatment Condition US-169 Northbound Lanes

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19 PreTreatment Condition CSAH-8 East and Westbound Lanes

20 Average IRI (in/mile) Pre-Construction Post-Construction Micro surfacing, CSAH 8 10-Nov Apr-17 8-May May Jun Jun Jul Jul-17 8-Aug Aug-17 7-Sep Sep-17 5-Oct Oct-17 6-Nov Nov Nov-17 Sec. 4 - Over Single Chip Seal Sec. 8 - Over Fibermat Chip Seal Sec. 9 - Over Scrub Seal Sec Over Crack Seal and Transverse Mastic Sec Type II Sec Double (Type II over Type II)

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24 Open Graded Friction Coarse OGFC August 2016 Hardrives Contractor OGFC/PCC conventional tack OGFC/PCC ultrafuse tack OGFC/HMA ultrafuse tack OGFC/HMA conventional tack 24

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26 It was not our wealth that made our highways possible; rather it October 24, 2013 was our highways that made our wealth possible, Thomas Harris McDonald Commissioner of Public Roads

27 Thank You Jerry Geib

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29 ADT I US MN total % >2, ,314 5, ,000-1,084 2,059 3, k , k , k >100k

30 St. Louis CR 4 & 16 CR , 30% RAP. Cracked every 50 during the 1 st winter. CR , 20% RAP. No cracking during the 1 st winter.

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32 Minnesota s Story (about 20 years ago) Design for the loads (and Hope to) Survive the environment (thermal cracking)

33 Minnesota s Story (today) Design for the loads Design for the environment

34 MINNESOTA ALABAMA

35 MINNESOTA Total area 12 th 30 th ALABAMA 86,935 sq. mi. 52,420 Population 22 nd 24 th 5,519,952 4,863,300 Lane miles 5 th!! 17 th 285, ,068

36 MINNESOTA DOT Lane miles 21 th 19 th ALABAMA 29,260 29,568 Interstate lane miles 4,030 4,558

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38 Auburn dew points 70-74F Very Humid, quite uncomfortable 75-80F Extremely uncomfortable, fairly oppressive Over 80F Severely high, deadly for asthma Summer of ~ 70+ dew points from June 15 Sept 11. MN 12 days total over 70+ Jan days below 0, Feb 12 days below 0