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Optimizing Rubberized Asphalt with Evotherm and Evoflex® RMA · PDF file 6/3/2019...

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  • Optimizing Rubberized Asphalt with Evotherm and Evoflex® RMA Trey Wurst

    VPRIS Tuesday, 19 June, 2019

  • Evotherm is the industry’s leading warm mix paving solution.

    Comprehensive additive package

    Optimized to deliver

    • Mixing

    • Coating

    • Workability

    • Compaction

    • Adhesion

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Evotherm uses natural chemicals derived from pine trees

    Additives are comprised of specialty surfactants derived from pine trees

    Specifically developed for use in asphalt applications

    – Heat stable

    – High flash point

    – Low odor Hydrophillic head

    Asphalt

    Hydrophobic tail

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Rubberized Asphalt Improvements with Evotherm

    1. Lower Emissions

    2. Improved Compaction

    4 Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Lower emissions

    Hot mix Evotherm

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Fume exposure compared to HMA

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Lower stack emissions with Evotherm compared to HMA

    250 °F Evotherm, 310°F HMA control

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Improved Rubberized Mix Compaction with Evotherm

    Evotherm and Evolfex RMA│ Tuesday, June 19, 20198

  • Improved Rubberized Asphalt Compaction with Evotherm

    9 Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Product Development Efforts Evoflex RMA

    10 Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • 11

    Florida DOT Specification

    ▪ 1993 inception

    ▪ Politics versus performance

    ▪ 7% minimum mandate

    ▪ 2014 binder specification update (PG 76-22 Hybrid ARB)

    ▪ Separation specification

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Hybrid pellets

    GTR, SBS and chemical additives

    •Solubilize SBS polymer and disperse within GTR matrix

    •Pre-disperse polymer, improves networking efficiency

    •Flexible formulation components (custom compound options)

    •Additive interaction improves storage stability

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • How easy is it?

    13

    ▪ Easy drop in to existing SBS systems

    ▪ 8mm pellet can be pneumatically conveyed

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • How is asphalt modified?

    ▪ Terminal blend using a Siefer mill

    ▪ Plant blend with GTR blend unit

    14 Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Product Designation Meaning

    • Evoflex RMA name designation is created based on ingredient content

    • Evoflex RMA 725 for example

    7 2 5

    75% GTR 20% SBS 5% Chemistry

    15 Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

    Storage Stability

    16

    • Elite Binder Properties

    • Long Term tank storage

  • Evoflex RMA Fatigue Performance

    17

    0

    200

    400

    PG 76-22 StellarFlex GTRH

    278 249

    Texas Overlay Test, cycles

    Evoflex RMA PG 76-22

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • -20

    -18

    -16

    -14

    -12

    -10

    -8

    -6

    -4

    -2

    0

    0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000

    Number of Passes

    R u

    t D

    e p

    th (m

    m )

    Stripping

    Inflection

    Point

    (SIP)

    Number of

    Passes to

    Stripping

    Inflection Point

    (SIP)

    Number of

    Passes

    Failure, N f

    Evoflex RMA – Rutting Performance

    18

    0

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    0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000

    V e rt

    ic a l D

    e fo

    rm a ti

    o n

    ( m

    m )

    Loading Cycles (n)

    Left Wheel

    Right Wheel

    TxDOT Specification: > 10,000 Cycles @ 12.5 mm Rutting

    PG 76-22 PMA

    0

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    0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000

    V e

    rt ic

    a l

    D e

    fo rm

    a ti

    o n

    ( m

    m )

    Loading Cycles (n)

    Left Wheel

    Right Wheel

    TxDOT Specification: > 10,000 Cycles @ 12.5 mm Rutting

    Evoflex RMA PG 76-22

    Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Field Performance –PA-63

    19 Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Wisconsin GTR Trial – June 2019

    20 Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Where has Evoflex RMA been utilized?

    ▪ Arizona

    ▪ Florida

    ▪ Georgia

    ▪ Illinois

    ▪ Kentucky

    ▪ New Hampshire

    ▪ New Jersey

    ▪ Ohio

    ▪ Pennsylvania

    ▪ Tennessee

    ▪ Vermont

    ▪ Wisconsin

    21 Evotherm and Evolfex RMA│ Tuesday, June 19, 2019

  • Presentation title │ Date22

    Come over to the booth with Questions Thanks for your time!

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