Summary of Rubber Modified Asphalt Product Specifications around ...

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7.2 Construction of Asphalt Rubber Chip Seals There are weather and other requirements for asphalt rubber chip seal applications that must be followed to ensure a successful product. Table 9 shows that the application normally requires a high binder application temperature and hot coated aggregate. California has found that precoating the aggregate will increase the bonding and rock retention. Table 9. Requirement during Asphalt Rubber Chip Seal Construction by Agencies Agency Ambient/pavement temperature California/Caltrans Pavement ≥ 13 o C (55 o F); The ambient air temperature should be 16-43°C (60-110F). Arizona DOT Ambient and pavement surface temperatures ≥ 24C (75 o F). Binder Temperature The binder application temperature is 196-213°C (385-415 o F). Chip Rock Temperature Chip application temperatures107- 163°C (225- 325F). Chip rock application temperature ≥ 121C (250 o F). Compaction Minimum of one complete coverage with one or more pneumatictired rollers shall begin within 90 seconds following the placement of the screenings. Distance between the rollers and the screenings spreader shall not exceed 60 m. A minimum of 3 complete coverages. Sweeping shall be a multi-step operation. Rolling is important. Shall use three pneumatic rollers. 17
Agency Ambient/pavement temperature Texas DOT Generally air temperature is ≥ 27C (80 o F) , or above 21C (70 o F) and rising. Binder Temperature Binder application temperature < 218C (425 o F). 8.0 Asphalt Rubber Interlayers Specifications Chip Rock Temperature Preheat aggregate to between 121- 177C (250- 350°F). Compaction Immediately after the distributor has started spraying the hot asphaltrubber, uniformly apply the aggregate at the rate specified by the Engineer. After rolling, sweep away excess as soon as aggregate has sufficiently bonded. Asphalt Rubber Interlayers are a Stress Absorbing Membrane Interlayer (SAMI), which is a membrane seal that is used to retard the rate of reflection cracking from an underlying layer into new overlays. It consists of an application of an Asphalt Rubber Chip Seal. An HMA overlay is then placed over the SAMI. If necessary, traffic may be allowed to operate on the SAMI prior to construction of the overlay. 8.1 Design of Asphalt Rubber Chip Seal Interlayer Asphalt rubber chip seal interlayers have been commonly used in many agencies. Table 10 shows the general design related information. 18
Page 1 and 2: Summary of Rubber Modified Asphalt
Page 3 and 4: Acknowledgements We appreciate the
Page 5 and 6: Appendix I: Arizona Asphalt Rubber
Page 7 and 8: 3.0 Asphalt Rubber Binder Specifica
Page 9 and 10: Agencies Source Gradation Additives
Page 11 and 12: Agencies Source Gradation Additives
Page 13 and 14: Agency CRM percentage Blending temp
Page 15 and 16: 4.2 Material Property Testing of Te
Page 17 and 18: Table 4. Mix Design Parameter Compa
Page 19 and 20: under snow plow activity and freeze
Page 21: 6.0 Terminal Blend Mix Specificatio
Page 25 and 26: 8.2 Construction of Asphalt Rubber
Page 27 and 28: 9.0 Summary and Recommendations for
Page 29 and 30: Appendix A: Ontario Specifications
Page 31 and 32: compound. Continue blending the RA
Page 33 and 34: 1151.05.06.04 Rubberized Asphalt Ce
Page 35 and 36: i. Acceptance and pay adjustment of
Page 37 and 38: centipoises (see Note 1) LP-11 Cone
Page 39 and 40: 1151.03 DEFINITIONS Section 1151.03
Page 41 and 42: 1151.05.06 Rubber Modified Asphalt
Page 43 and 44: 313.07.06.02 Paving Clause 313.07.0
Page 45 and 46: a) PFGAC, if the PFGAC is less than
Page 47 and 48: Appendix B: Ontario Specifications
Page 49 and 50: D. A letter from the CR supplier in
Page 51 and 52: 313.07.15.06 Rubber Modified Asphal
Page 53 and 54: considered to be 0.65. Table R1 Tri
Page 55 and 56: supplier provides ingredients and i
Page 57 and 58: The Contractor shall be solely resp
Page 59 and 60: Section Limit defines the chainage
Page 61 and 62: The referee laboratory will be desi
Page 63 and 64: RUBBERIZED ASPHALT CONCRETE MIXTURE
Page 65 and 66: The CRM shall be sufficiently dry s
Page 67 and 68: special provisions. 2. The minimum
Page 69 and 70: AGGREGATE The aggregate for Type G
Page 71 and 72: manner specified for asphalt concre
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C. Asphalt modifier shall be tested
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B. Place one rubber ball on each si
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Test Parameter ASPHALT-RUBBER BINDE
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A. The temperature of the aggregate
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modifier. ASPHALT MODIFIER The asph
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sieve and record that number (next
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The Contractor shall provide a Haak
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modifier, and CRM. Paving asphalt a
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not more than 163°C after applying
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Appendix G: California Terminal Ble
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6. California Test 371 test results
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Prepaving Conference Schedule a pre
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HMA Acceptance Quality Characterist
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Quality Characteristic Hot Mix Asph
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3. Isolating the scale system withi
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if the atmospheric temperature is b
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3. From the center of the specified
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The asphalt-rubber shall contain a
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Appendix J: Arizona Specifications
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TABLE 413-3 MINERAL AGGREGATE CHARA
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source(s) of mineral aggregate, pro
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413-7 Construction Requirements: 41
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discharge chute of the drier in ord
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Screeds shall include any strike-of
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in nominal thickness. (C) Rolling P
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Appendix K: Arizona Specifications
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TABLE 414-3 MINERAL ADMIXTURE Mater
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414-6.02 Mineral Aggregate: Aggrega
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Mineral admixture shall be mechanic
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Before asphaltic concrete is placed
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furnished with the machine: Ski-typ
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The accepted quantities of asphalti
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Asphalt-Rubber Stress-Absorbing Mem
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If the asphalt-rubber membrane has
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Appendix M: Texas Asphalt Rubber Sp
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• a modifier is introduced separa
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A and B aggregates differ by more t
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Flat and elongated particles Tex-28
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When shown on the plans, the Engine
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(16) Development of JMF3. Evaluate
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At any time during production, the
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acceptable tolerances listed in Tab
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Appendix O: Texas Specifications -
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Gradation Requirements for Mineral
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Table 4 (continued) Test Methods, T
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Table 6 Master Gradation Bands (% P
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(13) Trial Batch Testing. Test the
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Hamburg Wheel tests meet the specif
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air voids will be determined based
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Contractor’s or the Engineer’s
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may make as many independent densit
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In-Place Placement Pay In-Place Pla
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a sampling port. Keep A-R binder fr
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type, grade and surface aggregate c
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Control records shall include at a
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Appendix R: Florida Asphalt Rubber
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341-8 Placement of Asphalt Concrete
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AR-OGFC as specified in 401.03.03.E
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Submit to the ME a certification of
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Table 902.07.03-1 JMF Master Ranges
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Table 902.07.04-1 Production Contro
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Appendix T: Massachusetts Asphalt R
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°C per hour. 6. Mechanical Blender
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Appendix U: China Asphalt Rubber Sp
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g/cm 3 . It should not contain stee
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S16 0~3 100 80~100 50~80 25~60 8~45
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矿料间隙率VMA (%) 不小于 19
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试件击实温度 160~170 试件
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初压开始温度 breakdown roller
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压路机类型 Type of Roller 静
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0.075mm ±2 ≤ 2.36mm 逐盘在线
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Blend Composition: 13.0% - 12.5mm A
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Percent Passing 100 90 80 70 60 50
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Draft 9-25-2011 % Air Voids 9.0 8.0
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Draft 9-25-2011 VFA 90.0 85.0 80.0
Page 223:
Draft 9-25-2011 218
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