Using Polymer Modified Asphalt Emulsions in Surface Treatments A ...

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4.0 PME Testing Plan and Strawman Specification 4.1 Strawman Specification for Emulsion Residues With input from a number of researchers and users and approbation from Federal Lands Highway, the a suggested Strawman Specification was developed with is provided below in Table 23. Note that the BBR will be replaced by low temperature parameters modeled from intermediate temperature DSR results. Table 23: Strawman Emulsion Residue Performance-Related Specification PURPOSE TEST CONDITIONS REPORT Residue Recovery Forced Draft Oven Tests on Residue from Forced Draft Oven 24 hrs @ambient + 24 hrs @60ºC % Residue High Temperature DSR-MSCR T h Jnr (Rutting/Bleeding) DSR freq sweep T h G* & phase angle Polymer Identifier (Elasticity/Durability) DSR-MSCR T h @3200 Pa % Recoverable Strain High Float Identifier DSR – (Bleeding)* non-linearity T h Test to be developed Tests on PAV (run on emulsions evaporated in the PAV pan using the Forced Draft Oven procedure) Low Temperature (Aged 10ºC & 20ºC G* DSR freq sweep Brittleness)* Model Low Temperature Phase Angle Polymer Degradation Recoverable Strain DSR-MSCR T (Before/After PAV)* h @3200 Pa Ratio 4.2 Testing Plan To verify the format of the Strawman specification, a testing plan was developed as part of this study for use as report-only for several Federal Lands Highway field projects scheduled for completion in the Summer of 2008. Additional tests will be run during this time to better define the test conditions and limits. Laurand Lewandowski of PRI Asphalt has worked closely with the FLH / NCPP research team to develop the proposed testing plan presented herein. PRI will be equipped to run all proposed tests for those suppliers or agencies that do not currently have the capability. Several suppliers have indicated that they do have the test equipment and expertise needed. While the testing during this evaluation has an estimated cost of $2,000 to $3,000 per asphalt emulsion, it is expected that the final 115
specification tests will cost approximately $1,000. The full list of PME Testing Plan protocols for the 2008 evaluations is provided below in Table 24. 116
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Using Polymer Modified Asphalt Emul
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2.10 SURFACE TREATMENTS, DISTRESS,
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EXECUTIVE SUMMARY Needs to be Compl
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DISCLAIMER This document is dissemi
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1. Compile published research on th
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2.0 LITERATURE REVIEW OF POLYMER MO
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the emulsion solution is termed the
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molecular weights ranging up to 100
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Elastomeric polymers exhibit a low
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The first commercial process that w
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2.2.3 Synthetic Rubber and Latex Sy
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Latex Modified Unmodified 80 Chip R
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of residual asphalt (3). Additional
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Sabbagh and Lesser (1998) note that
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2.2.6 Plastics The plastic polymer
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high temperature performance, but w
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2.2.7 Polymer Blends Select polymer
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Table 2: Polymer Modification Metho
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Forbes et al found that asphalt emu
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Lubbers and Watson (2005) present t
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Takamura and Heckmann (1999) sugges
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Neat Asphalt + 8% LDPE1 + 8% LDPE2
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Figure 16: Effect of SBS Concentrat
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destruction of the polymer modifier
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emulsified and non-emulsified aspha
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However, in developing the SPG, Epp
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• Forced Air-Drying Method - This
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• Wet Track Abrasion Loss - used
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ductility (61). King characterizes
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Polymer modified asphalt emulsions
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3 40-120º F 5.02 12.81 6.04 14.92
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emulsions require a much longer set
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Figure 20: Chip Seal Aggregate Rete
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design specifications are meticulou
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Holleran (n.d.) recommends using SB
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Page 75 and 76: Microsurfacing applications by defi
Page 77 and 78: Thus, the cohesive properties of SB
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Page 81 and 82: Moreover, although the moduli of th
Page 83 and 84: Numerous decision tools and best pr
Page 85 and 86: 3.0 LABORATORY TESTING AND SPECIFIC
Page 87 and 88: and performance-related specificati
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Page 91 and 92: • Polymer/Asphalt Compatibility a
Page 93 and 94: angle at the lowest pavement temper
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Page 103 and 104: Table 17: Comparison of Microsurfac
Page 105 and 106: Emulsion/Aggregate Performance Test
Page 107 and 108: the FLH report-only format be used
Page 109 and 110: leading the negatives. If post-blen
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Page 113 and 114: traffic areas, as are durable, poli
Page 115 and 116: esearchers, with the leading candid
Page 117 and 118: Table 13 illustrates a draft Strawm
Page 119 and 120: Laboratory Design Procedures • Ch
Page 121: • Develop/improve performance met
Page 125 and 126: PROPERTY TEST METHOD SPEC. RESULT B
Page 127 and 128: 14. Takamura, Koichi, “SBR Latice
Page 129 and 130: 38. Turk, Johannes, and Schmidt, Ma
Page 131 and 132: 62. Desmazes, C., Lecomte, M., Lesu
Page 133 and 134: 86. European Standard EN 14895, “
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Using Polymer Modified Asphalt Emulsions in Surface Treatments A ...

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