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Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy
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Warm polymer modified-asphalt03022013submitted kict main eng 03032013 - copy

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  • 1. 1st International Mongolia Road Expo & ConferenceБү лээн асфальт технологийн хү рээнд Монгол улсын авто замын нө хцө лд тохирсон Полимерээр сайжруулсан асфальтын нэмэлт бодисыг гаргаж авах ажлын ө рнө л Yongjoo Kim, Ph. D. Senior Researcher SOC Research Institute Highway Research Division Korea Institute of Construction Technology 2013. 3. 6 1
  • 2. 1st International Mongolia Road Expo & ConferenceАгуулга 1.Asphalt Pavement 2.Polymer-Modified Asphalt Pavement 3.Warm-Mix Asphalt Technology 4.Reasons of Early Failures in Mongolian Road 5.Development of Warm Polymer-Modified Asphalt for Mongolian Road 6.Conclusions 2
  • 3. 1st International Mongolia Road Expo & ConferenceHistory of KICT Activity in Mongolia(2012. March) Met Mr. Batjargal (ESTO) at World ofAsphalt(2012. April) Technical consulting of reasons whyearly distresses were occurred in South Gobi road(2012. August) KICT-MoR and KICT-MRA MOU Mr. Onon visited KICT(2012. September) built field trials of Warmpolymer-modifier asphalt pavement in South Gobiroad and Ulaanbaatar(2012. November) Participation of technical seminarto introduce warm polymer-modified asphalttechnology(2012. December) Technical training for researchersand engineers of MRT, MRA, UB, ESTO.(2013. February) Meeting with MRT, MRA, UB, ESTOto discuss about new technology of warm polymer-modified asphalt pavement(2013. March) Participation of Mongolia Road Expo&Conference 3
  • 4. 1st International Mongolia Road Expo & Conference1. Hot-Mix Asphalt (HMA) Pavement  Hot Mix Asphalt (HMA) is a combination of approximately 95% stone, sand, or gravel bound together by 5% bitumen.  Bitumen is heated and mixed with the heated aggregate at an HMA facility  The asphalt mixture is placed and then compacted using a heavy roller, which is driven over the asphalt pavement. 4
  • 5. 1st International Mongolia Road Expo & ConferenceClassification of Asphalt Pavement by MaterialsType of asphalt pavements can be classified by combination ofaggregate, bitumen and additives Dense-Graded Asphalt Pavement Polymer-Modified Asphalt Pavement Crumb Rubber Asphalt Pavement Stone Mastic Asphalt Pavement Porous Asphalt Pavement Recycling Asphalt Pavement 5
  • 6. Classification of Asphalt Pavement byTemperature Criteria 200°C 200°C 200°C 180°C 180°C 180°C 160°C Producing 160°C 160°C 140°C 140°C 140°C Compacting 120°C 120°C Producing 120°C 100°C Compacting 100°C 100°C 80°C 80°C 80°C Technology Trend = Lower Temperatures 60°C 60°C 60°C 40°C 40°C 40°C Producing & 20°C 20°C 20°C Compacting6
  • 7. 1st International Mongolia Road Expo & ConferenceKey Factors of Building Good PavementIf you want to build good pavement, you should consider the followingfour key factors.Material Selection Mix Design Production ConstructionHigh quality and Laboratory mix Mixing and Paving andconsistent materials design and producing compactingshould be selected performance test temperatures process should beby standard should be should be controlled proceed withspecification. conducted at well accurately at proper equipped asphalt plant. temperature. laboratory. Bitumen & Aggregate Design Aggregate Structure Design Binder Content 7
  • 8. 1st International Mongolia Road Expo & Conference2. Polymer-Modified Asphalt Pavement Polymer-Modified Asphalt Mixture Polymer-Modified Asphalt + + = Bitumen Polymer Aggregate Polymer- Modified Polymer-Modified Asphalt Asphalt Bitumen Aggregate Aggregate Polymer 8
  • 9. Role of Polymer-Modified Asphalt Pavement Plastic Deformation Low Temperature Heavy Traffic Condition Cold Weather Condition (Rutting) CrackingPMA Pavement lead to 1) Improve resistance to rutting 2) Reduce fatigue cracking 3) Mitigate thermal cracking 4) Resist top-down cracking 9
  • 10. Benefit of Polymer-Modified Asphalt This is The benefit of the Polymer PG 70-34 Polymer-Modified Bitumen PG 58-28 Unmodified Bitumen-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 Temperature ºC 10
  • 11. Improvement of Bitumen Adhesion Polymer-Unmodified Modified Bitumen Asphalt 11
  • 12. Producing Methods of PMA Mixture Straight Asphalt Straight Asphalt Straight Asphalt Straight Asphalt Polymer Polymer Mixing Transfer Transfer Aggregate Aggregate Aggregate Aggregate Polymer Polymer Pre-Mixed Type Plant-Mixed Type  Suitable for large amount of  No need storage tank production  No need high shear mixerAdvantage  Stable quality  Suitable for Small and large amount production  No thermal aging  Phase separation  Sensitive to operating condition  High shear mixer neededDisadvantage  Storage tank needed  Thermal aging during high temp. storage 12
  • 13. 1st International Mongolia Road Expo & Conference3. Warm-Mix Asphalt Technology Hot-Mix Asphalt Pavement Warm-Mix Asphalt Pavement 180°C 180°C Production Temperature 160°C 160°C Construction 140°C 140°C Temperature Production 120°C Temperature 120°C 100°C 100°C Construction 80°C Temperature 80°C 13
  • 14. Benefits of Warm-Mix AsphaltBy Decreased Production,and CompactionTemperatures,We can have many benefits Producing Process1. Saving Energy2. Reducing Emissions3. Less Oxidation WARM WARM Paving Construction HOT HOT1. Better workability and compactability2. Extending Constriction Period3. Reducing Traffic Opening Time 14
  • 15. LEADCAP WMA Technology In 2009, the Korea Institute of Construction Technology (KICT) LEADCAP Family and Kumho Petrochemical, Ltd. developed a new warm-mix asphalt LEADCAP-B (Base) technology. Named “Low Energy and Low Carbon-Dioxide Asphalt Pavement (LEADCAP)” LEADCAP is an additive of a wax- LEADCAP-M based composition including a (Modified) crystal controller and an adhesion promoter. Easy to reduce viscosity of bitumen to compact at warm temperature LEADCAP-A (Advanced) Improve moisture susceptibility and stripping resistance between aggregate and bitumen 15
  • 16. Improvement of Rutting ResistanceTo evaluate rutting potential of LEADCAP WMA mixture wouldLEADCAP WMA mixtures at wet be more resistance to ruttingcondition, the mobile moving than HMA mixture.load simulator (MMLS3) testwas conducted at wet conditionat 40˚C 16
  • 17. Improvement of Stripping ResistanceBefore After WMA-LEADCAP HMA 17
  • 18. Improvement of Compactability at WarmTemperatureLEADCAP WMA pavement achieved acomparable air void as the control HMApavement section 1st Field Trial 2nd Field Trial 18
  • 19. Reducing Traffic Opening TimeTemperature (C) Time (min) LEADCAP WMA Pavement HMA Pavement 5 hrs 20 min 7 hrs 30 min 19
  • 20. Field Experiences in Foreign Counties 2012.92010.9 2010.11 2011.8 2012.7 2011.9 2010.12 2012.9 2011.9 2012.8 20
  • 21. 1st International Mongolia Road Expo & Conference4. Reasons of Early Failures in Mongolian RoadTraffic Loading Environment Loading Early FailuresInappropriate Materials Quality Control & Quality Assurance 21
  • 22. 1st International Mongolia Road Expo & ConferenceProblem Statement of South Gobi Road Heavy Traffic Cold Weather Early Failure after 1 year Service Life No QA/QC 22
  • 23. Problem Statement of Ulaanbaatar City Road Stripping Thermal Crack Bad Smoothness No QA/QC 23
  • 24. 1st International Mongolia Road Expo & Conference5. Development of Warm Polymer-ModifiedAsphalt for Mongolian Road  Improve engineering properties N2 Polymer N4 Polymer  Improve workability  Improve moisture suceptibility  Better compactability LEADCAP WMA additive 24
  • 25. Ductility and Rotational Viscosity 35 3.0 2.8 29.8 30 2.5 25.2 25 1.9 P 2.0 a s ) ( 1.7 . 20 1.5 15 1.0 @ C 5 3 1 ºm 10 7.9Duyc)(t Rli n o a y v s c t l i 0.5 5 0 0.0 Stright Asphalt WMA PMA-N2 WMA PMA-N4 Stright Asphalt WMA PMA-N2 WMA PMA-N4 Type of Asphalt Binder Type of Asphalt Binder The ductility of WMA PMA-N2  The rotational viscosity of WMA and WMA PMA-N4 increases PMA-N2 and WMA PMA-N4 about 17.3cm to 21.9 ºC decreases about 0.9Pa.s to compared to straight asphalt. 1.1Pa.s compared to straight It indicates that WMA PMA asphalt. would be more flexible than  It is good indicator of straight asphalt at room effectiveness of WMA additive temperature. to reduce the viscosity of polymer-modified asphalt at 135 ºC 25
  • 26. PG & Crack Resistance at Low Temperature Performance Grade Performance Grade Flexibility FlexibilityHigh Temp. Cold Bending Test PG 70-34 ② PG 58-28 70 ① 58 28 Deformation (mm) 34 ① Unmodified Unmodified WARM Bitumen Bitumen PMA Bitumen ② WARM PMALow Temp. Bitumen 26
  • 27. 1st International Mongolia Road Expo & ConferenceWhy We Should Use Warm Polymer-ModifiedAsphalt in MongoliaTraffic Loading Environment Loading Inappropriate Materials Quality Control & Quality Assurance 27
  • 28. Field Trials of Warm PMA Pavement inUlaanbaatar City Road Condition Information Weather Condition 2012.09 (Fall) Mix Type 13mm Dense-Graded Asphalt Additive Type-1 WMA(LEADCAP) Additive Type-2 WPAM(PMA+LEADCAP0 Mixing Type Plant-mixed 140±5℃ (WMA) Mixing Temperature 150±5℃ (WMA PMA) Compaction 130±5℃ (WMA) Temperature 140±5℃ (WMA PMA) HMA WMA WMA PMA Gmm (g/ ㎤ ) 2.388 2.443 2.437 Core Density (g/ 2.344 2.341 2.382 ㎤) Air Voids (%) 1.8 4.1 2.5 28
  • 29. Field Trials of Warm PMA Pavement in South GobiRoad Condition Information Weather Condition 2012.09 (Fall) Mix Type 19mm Dense-Graded Asphalt Additive Type-1 WMA PMA-1 Additive Type-2 WMA PMA-2 Mixing Type with LEADCAP Plant-mixed 150±5℃ (WMA PMA-1) Mixing Temp. 155±5℃ (WMA PMA-2) 140±5℃ (WMA PMA-1) Compaction Temp. 145±5℃ (WMA PMA-2) HMA WMAPMA-1 PWMA-2 Gmm (g/ ㎤ ) 2.505 2.492 2.499 Core Density (g/ 2.267 2.295 2.305 ㎤) 29 Air Voids (%) 9.5 7.9 7.8
  • 30. 1st International Mongolia Road Expo & ConferenceQuality Control with KICT Researcher 30
  • 31. Everyone is Happy because of Warm PMAPavement 31
  • 32. 1st International Mongolia Road Expo & ConferenceTraining and Technical Know-How Transfer 32
  • 33. 1st International Mongolia Road Expo & Conference6. Conclusions1. Due to the heavy traffic and severe weather condition, early distresses, such as cracks, rutting, potholes and stripping have occurred from Mongolian pavements.2. In order to enhance crack and rutting resistances and improve paving quality control, warm polymer modified asphalt pavement is selected to reduce rutting at high temperature and cracking at low temperature and reduce the mixing and compacting temperatures. As a result, it provides better compaction on the road and the ability to haul paving mix for longer distances.3. The WMA PMA is suitable to Mongolian roads in order to improve rutting and crack resistance at high and low temperatures4. The WMA PMA field trials were successfully completed in South Gobi road and Ulaanbaatar.5. Field experiences confirmed that warm PMA is effective to producing and compacting mixtures at temperature of 20°C lower than HMA mixture 33
  • 34. 1st International Mongolia Road Expo & Conference‘NOTHING’ is not an option Warm Polymer-modified asphalt pavement will lead to improve road condition in Mongolia 34
  • 35. 1st International Mongolia Road Expo & Conference Thank You Баярлалаа 35

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