OFFICE OF MATERIALS & SURFACING DOT. Connecting South Dakota and the Nation. Asphalt Conference. April 6, Rick Rowen. SDDOT Bituminous Engineer

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1 Asphalt Conference April 6, 2016 Rick Rowen SDDOT Bituminous Engineer

2 New highway bill: Fixing America s Surface Transportation act of 2015 (FAST) New State Transportation funding bill in 2015 New Standard Specifications for Roads and Bridges Book dated 2015 Gyratory compactor will be used for D, E, G, HR and composite mix designs Security tags needed on all samples delivered by Contractor to Pierre materials lab

3 ( Millions) SDDOT Tonnage from 2003 to ( 2 ( 1.5 ( 1 ( 0.5 ( 0 (

4 2016 HMA Projects so far, 1.3 million tons 18 QC/QA Projects, 0.7 million tons 25 D, E, G, S, and HR 0.4 million tons Composites 0.2 million tons

5 SDDOT ASPHALT CONCRETE 2015»Q2 350,000»Q2R TONNAGE 300, , , , , , , , ,950 73, »Q3»Q3R»Q4R»E1»HR»S 50,000 45,400 0 CLASS

6 DOT 2015 (QC/QA vs non QC/QA mix) QC/QA Tonnage 83% Non QC/QA Tonnage 17% SDDOT

7 DOT 2015 (Virgin MA vs RAP mix) RAP Tonnage 56% Virgin MA Mix Tonnage 44% SDDOT

8 RAP in 24 out of 48 mixes

9 PG BINDER USE PG PG PG PG PG Tons Used PG GRADE

10 High temperature 58 C (136 F) 64 C (147 F)

11 Low temperature -34 C (-29 F) -28 C (-18 F)

12 2015 PG Binder Types * PG * PG * PG * PG * 1 PG * 48 *

13 Binder Testing Binder specification changes in the future MSCR test procedure instead of elastic Recovery (AASHTO T350) AASHTO M332 Specification Different system to select binder i.e. grade bumping by using the following S (standard), H (high), V (very high), E (extremely high)

14 South Dakota (20 year ESALs) 0 to 300,000 ESALs 3865 miles 300,000 to 1,000,000 ESALs 3046 miles 1,000,000 to 3,000,000 ESALs 1528 miles 3,000,000 to 10,000,000 ESALs 276 miles over 10,000,000 ESALs 0 miles

15 Trucks ADT Q1 < 75 trucks 25% Q trucks 42% Q trucks 17% Q trucks 12% Q5 > 1200 trucks 4%

16 Asphalt Pavement Analyzer (T 340) Gyratory samples compacted to Ndes (4-5 % Va) test at High PG binder temperature 8000 cycles, hose 100 psi and load 100 lbf record average of rut depth measurements

17 D OT

18 Q2 Asphalt Pavement Analyzer Results Rutting *

19 Q2R Asphalt Pavement Analyzer Results Rutting *

20 Q3 Asphalt Pavement Analyzer Results Rutting *

21 Q3R Asphalt Pavement Analyzer Results Rutting *

22 Q4R Asphalt Pavement Analyzer Results Rutting *

23 FHWA Every Day Counts Intelligent Compaction (IC) Group set up for IC usage in SD Workshop at 2016 DAPA meeting High Friction Surface Treatment constructed in SF and RC Regions Warm Mix Asphalt 20+ projects Safety edge on several projects

24 Intelligent Compaction

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26 Inplace density average QC/QA Projects Q2 Q2R Q3 Q3R Q4R

27 In place density average for E, G, and HR mixes HR E1 G

28 Q2 Projects Density lower upper *

29 Q2R (20% RAP) Projects Density lower upper

30 Q3 Projects Density lower upper

31 Q3R (20% RAP) Projects * Density lower upper

32 D OT Safety Edge

33 Warm Mix Warm Mix Additives used ( warm mix or compaction aid) Foamed, Advera, Evotherm, Rediset WMA Research Project (2008) still field testing Still must set up approved products list or method of approval Addition at plant site, need specs on Requirements for amount of additive and spec tolerance

34 Safety Rumble strips or stripes Centerline rumble strips Longitudinal joint density Method spec Monitor density at joint on a few E and HR projects Monitor condition joints on older projects

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37 Research Projects Mechanistic-Empirical Design Guide Dynamic Modulus testing of AC SDSM&T (MEPDG materials testing) and Mr testing Warm Mix Asphalt by P. Sebaly in NV Creep testing asphalt concrete by ReSpec RAP specifications in SD by NCAT Thermal imaging camera uses Fibers in asphalt mixtures (RC and SF) Asphalt crack sealing (start in 2016)

38 D OT New Micro-milling Special Provision to be used on some Projects in 2016

39 Tack coat, no dilution above 0.07 gal./sq. yd. Material type CSS-1h or SS-1h New SDDOT tack rates for 2016 projects 0.09 old pavement 0.06 between lifts

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41 CONSTRUCTION MATERIALS Crude Oil Price (barrel) RAP and Warm Mix Use * ($) US Infrastructure C O N S T R U C T I O N M A T E R I A L S / B U I L D I N G A S T R O N G A M E R I C A

42 RAP testing for gradation, binder content and binder properties

43 Approved Product lists Warm mix additives Release agents Crack sealants Research Project New Chip Seal Special Provision Design and compatibility requirements Revised Micro-surfacing Special Provision New Micro-milling specification

44 MEPDG 6 Projects a year SDSM&T

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46 MEPDG work from individual materials tests or catalogue of test results data Input data AMPT test results Input Mr (ksi) subgrade Input Mr (ksi) base Input asphalt thickness Determine if meets design requirements on predicted performance If not reenter with new asphalt thickness

47 Low Temperature Cracking Resistance DCT test, Disc-Shaped Compact Tension test SCB test, Semi Circular Bend Test Purchase equipment 2016

48 Hamburg wheel-tracking test device Moisture resistance Rutting

49 Q2 PG 64-22

50 Q3 PG binder

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