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A-1 APPENDIX A Responses of Survey on Agency Specifications Regarding Mixing and Compaction Temperatures

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Table A1. NCHRP Project 9-39 survey response. 1. Procedure to determine mixing and 2. Procedure to determine mixing and 3. Procedure to determine mixing and 4. Procedure to determine mixing and 5. Are the same procedures used to compaction temperature for unmodified compaction temperature for polymer- compaction temperature for crumb compaction temperature for air blown or determine plant production and laydown State/Organization hot mix asphalt? modified hot mix asphalt? rubber-modified hot mix asphalt? chemically-modified asphalt ? temperatures? Comments Temp/visc curves from supplier; based Alabama Supplier's recommendation N/A N/A Set by contractor; <350 F on A.I. method Mix @ 276-286F; Compact @ 259- Mix @ 325-335F; Compact @ 305- Mix @ 325-335F; Compact @ 305- Alaska N/A Yes 267F 315F 315F Test for presence/amount of modifier as Arkansas T 245/T 312 T 245/T 312; Supplier recommendation N/A N/A Yes part of QPL procedure. PG 70-22 & 76-22 w/SB,SBS,SBR T 245/T 312; Use supplier T 245/T 312; Use supplier Set by contractor; <325F unless higher recommendation If mix temperature recommendation If mix temperature Mixing and compaction temperature Arizona T 245/T 312 temperature recommended by supplier & >325F or if compaction temperature > >325F or if compaction temperature > both @ 325F approved by ADOT 300F 300F California T 49/T 202 T 49/T 202 T 49/T 202 T 49/T 202 Yes Use Haake viscometer for modified asphalt Colorado T 245/T 312 T 245/T 312 N/A N/A Yes Connecticut T 245/T 312 Supplier recommendation N/A T 245/T 312 Only used as a guide Dist. Of Columbia T 245/T 312 T 245/T 312 T 245/T 312 N/A Yes Delaware T 245/T 312 Supplier recommendation N/A N/A Set by contractor Set by contractor based on supplier Set by contractor based on supplier Set by contractor based on supplier Set by FDOT based on lab and field Florida recommendation and contractor recommendation and contractor recommendation and contractor's Based on experience experience; 320F experience; 315F experience; 330F experience Georgia T 245/T 312 Supplier recommendation N/A N/A Yes Hawaii T 245/T 312 N/A N/A N/A Yes Idaho Supplier recommendation Supplier recommendation N/A N/A Yes Dense-graded = 300+9F; Dense-graded = 300+9F; PG 58-28, 64-28, 70-28, 64-22, 70-22, 76- Indiana N/A Must meet appropriate PG spec. Yes Open-graded = 260+9F Open-graded = 260+9F 22 Supplier recommendation and contractor's Illinois Mix@295 5F; Compact@295 5F Mix@325 5F; Compact@305 5F N/A N/A experience Iowa Mix and compact @ 275 F Mix and compact @ 275 F Supplier recommendation N/A Yes Kansas Supplier recommendation; <350F Supplier recommendation; <350F N/A N/A Yes

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Table A2. NCHRP Project 9-39 survey response. 1. Procedure to determine mixing and 2. Procedure to determine mixing and 3. Procedure to determine mixing and 4. Procedure to determine mixing and 5. Are the same procedures used to compaction temperature for unmodified compaction temperature for polymer- compaction temperature for crumb compaction temperature for air blown or determine plant production and laydown State/Organization hot mix asphalt? modified hot mix asphalt? rubber-modified hot mix asphalt? chemically-modified asphalt ? temperatures? Comments Maintain temperature @plant within Based on PG grade & supplier 15F of approved temperature based on Roadway temp based on PG grade; PG 58- Based on PG grade & supplier recommendation; for PG 76-22 PG grade; @ plant PG 58-22 & 64-22: 22 & 64-22: min=230F, max=330F; PG Kentucky recommendation; for PG 64-22 N/A N/A mix@340 5F, min=250F, max=330F; PG 70-22: 70-22: min=275F, max=350F; PG 76-22: mix@300 5F, compact @ 265 5F compact@ 310 5F min=300F, max=350F; PG 76-22: min=300F, max=350F min=310F, max=350F Supplier recommendation, but may be Louisiana Supplier recommendation Supplier recommendation Supplier recommendation N/A adjusted based on ambient temperature, haul distance, etc. Supplier recommendation may also be used, but may be adjusted based on ambient temp, Maine AASHTO T 245/T 312 AASHTO T 245/T 312 N/A AASHTO T 245/T 312 Yes haul distance, etc. Typical placement tempeerature 275-325F Controlled by paving operation based on Maryland AASHTO T 245/T 312 Supplier recommendation N/A N/A ambient temperature, haul distance, etc. Massachusetts AASHTO T 245/T 312 Supplier recommendation AASHTO T 245/T 312 N/A Yes Michigan Supplier recommendation Supplier recommendation Supplier recommendation Supplier recommendation Y es Supplier recommendation, but may be Minnesota Supplier recommendation Supplier recommendation N/A Supplier recommendation adjusted based on ambient temperature, haul distance, etc. Temperature/viscosity curves from Temperature/viscosity curves from Temperature/viscosity curves from Temp/visc curves verified by AASHTO Mississippi N/A Y es supplier supplier supplier T 316 per 100,000 gallons Missouri Supplier recommendation Supplier recommendation N/A N/A Yes Suppliers generally use T 245/T 312 with Montana Supplier recommendation Supplier recommendation N/A Supplier recommendation Y es allowance for field adjustment NDOR Spec - Nebraska AASHTO T 245/T 312 Supplier recommendation N/A Y es mix=350F,compact=325F Nevada N/A Supplier recommendation N/A N/A Y es Does not use unmodified asphalt New Hampshire T 245/T 312 T 245/T 312 N/A N/A Yes New Jersey T 245/T 312 Supplier recommendation N/A T 245/T 312 Y es New Mexico Supplier recommendation Supplier recommendation N/A Supplier recommendation Y es New York T 245/T 312 Supplier recommendation N/A T 245/T 312 Yes PG 64-22 JMF@ 300F; Mix @ plant within 15F of JMF; North Carolina T 245/T 312 Supplier recommendation N/A N/A PG 70-22 JMF@ 315F; Roadway temperature within +15 to -25F PG 76-22 JMF@ 335F of JMF North Dakota T 245/T 312; Supplier recommendation T 245/T 312; Supplier recommendation N/A N/A Y es

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Table A3. NCHRP Project 9-39 survey response. 1. Procedure to determine mixing and 2. Procedure to determine mixing and 3. Procedure to determine mixing and 4. Procedure to determine mixing and 5. Are the same procedures used to compaction temperature for unmodified compaction temperature for polymer- compaction temperature for crumb compaction temperature for air blown or determine plant production and laydown State/Organization hot mix asphalt? modified hot mix asphalt? rubber-modified hot mix asphalt? chemically-modified asphalt ? temperatures? Comments Supplier recommendation, Ohio AASHTO T 245/T 312 Supplier recommendation N/A N/A but adjust as needed Unmodified- mix @ 305 20F Compact@ 290F; Oklahoma Mix @ 325F, compact @ 300F Mix @ 325F, compact @ 300F N/A N/A Modified- mix @325 20F Compact @ 300F Oregon T 245/T 312 Supplier recommendation N/A Supplier recommendation Yes PG 52-28 @ 240-300F; PG 58-28 @ 260- Maintain temperature within specification Pennsylvania T 245/T 312 Supplier recommendation N/A Supplier recommendation 310F; PG 64-22 @ 265-320F; PG 76-22 value based on PG grade; NAPA EC-101 @ 280-330F Puerto Rico T 245/T 312 N/A N/A N/A Yes Rhode Island T 245/T 312 T 245/T 312; <330 F T 245/T 312; <330 F T 245/T 312 Yes Typical range = 285-300F South Carolina T 245/T 312 T 245/T 312 T 245/T 312 N/A Yes Supplier recommendation, but may be South Dakota T 245/T 312 Supplier recommendation N/A N/A increased up to 25F based on ambient temperature, haul distance, etc. PG 64-22 @ 290-320F; PG 70-22 @ 320- Plant & roadway temperature must be Tennessee T 245/T 312 Supplier recommendation; but 340F Supplier recommendation; but 340F N/A 350F; PG 76-22 @ 320-350F; PG 82-22 within specified range based on PG Grade @ 320-350F Texas Supplier recommendation Supplier recommendation Supplier recommendation Supplier recommendation Yes Items 1 and 2 generally followed by HMA Supplier recommendation, if available; Supplier recommendation, if available; Utah T 245/T 312 N/A producer, but may be set by contractor; otherwise based on experience otherwise based on experience <335 F Supplier recommendation, but may be Vermont Supplier recommendation Supplier recommendation N/A N/A adjusted based on ambient temperature, haul distance, etc. Virginia T 245/T 312 T 245/T 312 N/A N/A Yes Washington Supplier recommendation Supplier recommendation N/A N/A Yes Suppliers generally use T 245/T 312 Plant & Roadway temperature must be within 25 F of the median temperature West Virginia T 245/T 312 Supplier recommendation N/A N/A from AASHTO T 245/T 312 or recommended by supplier Mix @ supplier recommendation; Mix @ supplier recommend.ation; Mix @ supplier recommendation; Wisconsin N/A Supplier recommendation Compact @ 275 5 F Compact @ 275 5 F Compact @ 275 5 F

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Table A4. NCHRP Project 9-39 survey response. 1. Procedure to determine mixing and 2. Procedure to determine mixing and 3. Procedure to determine mixing and 4. Procedure to determine mixing and 5. Are the same procedures used to State/Organization compaction temperature for unmodified compaction temperature for polymer- compaction temperature for crumb compaction temperature for air blown or determine plant production and laydown Comments hot mix asphalt? modified hot mix asphalt? rubber-modified hot mix asphalt? chemically-modified asphalt ? temperatures? PG 58-28; mix@305, compact@280 PG Use supplier recommendation for Based on PG Grade; PG 64-28 and 70- 64-22; mix@310, compact@285 PG 64- Wyoming Based on PG Grade N/A N/A modified asphalt and AASHTO T312 for 28 are polymer modified 28; mix@315, compact@290 PG 70- unmodified 28; mix@325, compact@300 Army Corps of Engineers ASTM D2493 NAPA EC 101 as function of PG Grade NAPA EC 101 as function of PG Grade NAPA EC 101 as function of PG Grade Yes British Columbia Min. of Temperature/viscosity curves from Transp & Highways N/A N/A N/A Do not know supplier (Canada) Temperatures vary by supplier and PG New Brunswick DOT Supplier recommendation Supplier recommendation N/A Supplier recommendation Yes grade; Mixing ranges from 290-347 F; (Canada) Compaction varies from 257-334 F Maximum temperatures regulated by ASTM D-1559 and experience; Max. legislation & Danish Asphalt Industries Danish Road Directorate ASTM D-1559 and experience; Max. temperature legislated; Max. mixing N/A N/A Yes based on mix type, binder type, etc.; may be (Denmark) temperature legislated tempereature=374 F, Max. compact lower than by ASTM D-1559 (4.3.1 & temperature= 365 F 4.3.2) Own specifications; Own specifications; Binder @ mixing = Own specifications; Binder @ mixing = Central Road Research Binder @ mixing = 330-365 F, ASTM D2493 330-365 F, Mix @ plant = 285-320 F, 330-365 F, Mix @ plant = 285-320 F, Yes Institute (India) Mix @ plant = 285-320 F, Mix @ roadway = 265-300 F Mix @ roadway = 265-300 F Mix @ roadway = 265-300 F T 245/T 312; If temperature T 245/T 312; If temperature Quebec Min. of French Procedure LC 25-007; similar to corresponding to 0.17 Pas is >338 F, N/A corresponding to 0.17 Pas is >338 F, use Yes Transportation (Canada) AASHTO T 245/T 312 use maximum mixing range of 313-338 maximum mixing range of 313-338 F F Saskatchewan Highways and Based on other agencies and contractor's T 245/T 312 Supplier recommendation N/A Yes Very little modified asphalt used Transp. (Canada) experience N. Y. State Thruway T 245/T 312 N /A N/A N/A Yes Uses N. Y. DOT specifications Authority Ontario Min. of Supplier recommendation; T 245 / T Supplier recommendation; T 245 / T Supplier recommendation; T 245 / T Supplier recommendation; T 245 / T 312 Yes Suppliers use AASHTO T 312 Transportation (Canada) 312 312 312

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Table A5. NCHRP Project 9-39 survey response. 1. Procedure to determine mixing and 2. Procedure to determine mixing and 3. Procedure to determine mixing and 4. Procedure to determine mixing and 5. Are the same procedures used to State/Organization compaction temperature for unmodified compaction temperature for polymer- compaction temperature for crumb compaction temperature for air blown or determine plant production and laydown Comments hot mix asphalt? modified hot mix asphalt? rubber-modified hot mix asphalt? chemically-modified asphalt ? temperatures? ASTM D2493; based on experience 275 Prevalent binder is pen grade 80/100; May Public Works Ministry of Supplier recommendation; Supplier recommendation; F is widely used for compaction N/A Yes also use recommendation from NCHRP Malaysia ASTM D2493 ASTM D2493 temperature Report 459 Manitoba Dept. of ASTM D2493 Supplier recommendation N /A ASTM D2493 (Oxidized asphalt only) Yes Transportation (Canada) Australian Dept. of Optimum mixing = 320-338 F Optimum mixing = 320-347 F Temperature varies within range given Transport & Regional N /A N/A Yes Maximum compaction = 285-320 F Maximum compaction = 302-324 F depending on binder class/type. Services Placement temperature varies based on Compaction temp. varies based on binder Heat AC to 325-338 F; Heat aggregate Chinese Transportation Chinese Method T0619/ T 0625 binder penetration or modifier; penetration or modifier; Start compaction at to 365-428 F depending on polymer; N /A N/A Ministry (Similar to AASHTO T 245/T 312) Unmodified minimum=257 F; Modified temperature not less than: Unmodified=248 Maximum temp= 383 F minimum=320 F F; Modified=302 F Suppliers compact mix with unmodified binder and determine density. Compact Similar to AASHTO T245/T 312 but same mix with modified binder over a range uses temperature at viscosity of 180 20 Japan Road Association Supplier recommendation Supplier recommendation Supplier recommendation Yes of temperatures; determine the temperature cSt for mixing and temperature at that gives same density as unmodified and viscosity of 300 30 cSt for compaction use as minimum compaction temperature. Add 18 F to Metric Conversion Note: oC = (oF - 32) * 5/9