2016 MnROAD Phase-III Ideas
(Updated 6/16/2016 team meetings rank top 5 for each state, what is missing, and short term/tech transfer ideas)
# / Asphalt Topics (Past) / Tech Transfer Topic(now) / Short Term
“Analysis Idea”
(less than a year – crunch data from state projects or MnROAD) / Long Term
MnROAD
Research
Sections
(longer)
1 / Longitudinal joint construction performance
(Summarize each states current activities and what the NRRA team suggests as future action plan - Sources of deterioration; construction innovations, pavement preservation approaches). / Propose
5/7/16
2 / High recycled asphalt mixtures
(Balance performance, economics, constructability, innovative uses of recycled materials. Build from work done in Illinois, Wisconsin). / MO
MI
3 / Design, construction, and performance of thin surfacing layer alternatives in cold climates (Design, construction, performance in terms of friction, noise, and LCC benefit of UTBWC, 4.75 mm, 9.5 mm, etc.) / MN
4 / Rehabilitation of asphalt roadways with HMA overlays
(Surface prep, Texas underseals, performance tests. Include UTBWC. Evaluate 2361 HMAthin surface seal with spray paver application to address past debonding issues). / MN
MO
5 / Performance Test Summary
(Summarize current activities states are doing and the future. AFT, DCT, fatigue, E*, APA/HWTT, etc. can/will be used to predict pavement performance). / Propose
5/7/16 / MO
See 27
APA
6 / Full-depth reclamation
(Stabilized and unstabilized, sensitivity of performance to in place materials characteristics, additive types, mix design, add rock, etc. Optimal design balance between FDR base and surfacing thicknesses).
7 / Asphalt aging
(Effective methods to delay, and mitigate, the effects asphalt mix aging, benefits to LCC)
How does this effect the performance testing along with the use of rejuvenators/additives
John Garrity – MN asked more about this area of needs / MO
IL
8-10 / Rehabilitation of concrete roadways with HMA overlays
(surface prep before overlay construction with thin and thick overlays).
9 / Tack coats
(Summarize each states current activities and what the NRRA team suggests as future action plan - innovative alternatives, approach with higher RAP/RAS mixes, performance impacts). / Propose
5/7/16 / MI
8-10 / Rehabilitation of concrete roadways with HMA overlays
(crack/seat or rubblization methods).
See 36 also
11 / High strength asphalt layers / innerlayers
(technologies to producer higher strength HMA layers including use of chemicals and fiber reinforcement, impact on design and performance). Both HMA and PCC (possible use of the old westbound PCC) / MN
MO
WI
MI
12 / Identify asphalt mix additives that aid in compaction
(additives or construction technologies that can be used to achieve higher density in the field).
13 / Surface characteristics HMA
(further study based on results of Phase II).
14 / Field validation of cells built for different modes of cracking
(evaluate mechanisms and performance relative to fatigue, thermal, reflective, and top-down cracking)
15 / Cold mix asphalt / Cold in Place
(improvements to produce high quality HMA mixes). / WI
WAPA
16 / Warm mix asphalt
(research relative to chemical and foaming technologies, tie to LTPP and NTPEP).
17 / Verification of pavement designs using limit strain concept and high modulus layers.
18 / Porous HMA pavement rehabilitation options
(best practices for rehabilitation of porous pavements).
19 / Porous HMA new pavements
(follow-up to Phase II work, advances in technology, long-term performance)
20 / Construction and performance of pavement using central plant mixed bituminous with foamed asphalt (Eastern states are successfully constructing with these mixes. Evaluate performance at high and low traffic levels, final surfacing alternatives).
21 / Rehab of PCC using thick HMA overlays
(Performance and LCC of highly modified or high strength mixtures, head to head with similar thickness of concrete overlay. Can the envelope be expanded with this rehab technique).
22 / Paving fabrics in HMA overlays
(Design, construction, and performance using geosynthetics as part of an overlay project).
23 / Innovative production of asphalt mixtures
(Are there opportunities to demonstrate and/or evaluate new technologies in this area? Recent advances have been made in asphalt chemistry, RAP processing and incorporation, and plant output, among other things. Emphasize the valuable renewable asset represented by our nations asphalt roadways).
24 / Recycling usage in Minnesota RAP/ RAS
(Other states using increased percentages in shoulders. Innovations and alternate incorporation approaches).
25 / Implement improved 100% coverage QC/QA tools to minimize construction defects.
26 / Performance of warm mix pavements designed and constructed with asphalt foam manifolds.
27 / Laboratory and field performance of sustainable asphalt mixtures
(With the need to utilize existing materials to support sustainability there are questions as to how well a pavement system will perform when using higher percentages of RAP and RAS. Asphalt mixture characteristics (AFT, DCT, fatigue, E*, APA/HWTT, etc.) will be used to predict pavement performance. Develop fatigue testing to characterize the fatigue life of the mixture. Construct test section(s) at MnROAD to determine impact on performance of using high recycled materials on high traffic, cold weather pavement system. The study will determine which combination of mixture characteristics has on optimum performance life). / Like 5
Combine together? / MO
28 / Thinlay (MN suggested)
4.75 / MN
WI
29 / Rubber modified asphalt (WI suggestion) / WI
30 / Effects of REOB on mix performance (MN suggested)
Rejuvenators / other non-SBS related / Bio binders / Delta T critical temperatures / MN
WI
Flint Hills
31 / PG Grading System vs MSCR (modification methods X1-332 appendix) (MO suggested)
Appendix 332 focus / MO
32 / Regressed air void design (WI suggested)
3.0 air voids / asphalt addition / WI
33 / SuperPave 5 Evaluation (IL suggested)
Design at 5% voids and construct at 5% voids – 50/60 gyratatios
(Mihai – UofMN thoughts) / IL
UofMN
34 / Rubblization (TT)
Mill and keep C/L elevation with AC overlay / Proposed 6/2/16
35 / Cold Central Plant mix (Mihai) / UofMN
36 / Asphalt overlays over whitetopping or unbonded concrete overlays
Best Practices for this type of rehabilitation
Dan S / APA