Summary of Rubber Modified Asphalt Product Specifications around ...

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efore applying hot A-R. When directed, mark length of each rock land to verify the aggregate rate. H. Hot A-R Binder Placement. 1. General. Adjust the application temperature, not exceeding 425°F, to obtain the proper application characteristics. Uniformly apply at the rate specified or as directed. The maximum shot width is 13 ft. Adjust the shot width as directed so operations do not encroach on traffic or interfere with the traffic control plan. Use paper or other approved material at the beginning and end of each shot to construct a straight transverse joint and to prevent overlapping of the asphalt. Unless otherwise approved, longitudinal joints must match lane lines. 2. Limitations. Do not apply asphalt to the roadway until: traffic control methods and devices are in place as shown on the plans or as directed, the loaded aggregate spreader is in position and ready to begin, haul trucks are loaded with enough aggregate to cover the shot area, and haul trucks are in place behind the spreader box. 3. Test Sections. Place a test section at an approved location to demonstrate that equipment is capable of uniformly mixing and placing the A-R binder. The Engineer may stop work at any time and require additional test sections to be shot if: the application is not uniform; on 3 consecutive shots, application rate differs by more than 0.03 gal. per square yard from the rate directed; or any shot differs by more than 0.05 gal. per square yard from the rate directed. 4. Nonuniform Application. Stop application if not uniform due to streaking, ridging, puddling, or flowing off the roadway surface. Verify equipment condition, operating procedures, application temperature, and material properties. Determine the cause of nonuniform application and correct it. I. Aggregate Placement. The aggregate must be surface dry before application. When shown on the plans, preheat aggregate to between 250°F and 350°F. Cover each load with tarping material to minimize the temperature drop of the preheated aggregate. Immediately after the distributor has started spraying the hot asphalt-rubber, uniformly apply the aggregate at the rate specified by the Engineer. J. Rolling. Start the rolling operation on each shot as soon as aggregate is applied. Use sufficient rollers to cover entire mat width in 1 pass (1 direction). Roll in a staggered pattern. Unless otherwise shown on the plans, make at least 5 passes. If rollers are unable to keep up with spreader box, stop application until rollers have caught up, or furnish additional rollers. Keep roller tires free of asphalt. K. Repair. Repair areas where coverage is incomplete. Make repairs by patching, hand spotting, or other method, as approved. When necessary, apply additional hot A-R binder to embed the aggregate. L. Brooming. After rolling, sweep away excess as soon as aggregate has sufficiently bonded. M. Final Acceptance. Maintain surface treatment until the Engineer accepts the work. Repair any surface failures. Before final project acceptance, remove all temporary stockpiles and restore the area to the original contour and grade. 318.5. Measurement. A. A-R Binder. A-R binder, including all components, will be measured in tons just before delivery to the point of application. B. Aggregate. Contractor-supplied aggregate will be measured by the cubic yard in the trucks as applied to the road. C. Loading, Hauling, and Distributing Aggregate. If the Department furnishes the aggregate, the loading, hauling, and distributing will be measured by the cubic yard in the trucks as applied on the road. 318.6. Payment. The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit prices bid for “A-R Binder” of the type specified; “Aggregate” of the 173
type, grade and surface aggregate classification specified; or “Loading, Hauling, and Distributing Aggregate.” These prices are full compensation for surface preparation, tack coat, heating and mixing, hauling and placing all materials, rolling and removing excess aggregate, cleaning up stockpiles, test sections, equipment, labor, tools, and incidentals. 174
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Summary of Rubber Modified Asphalt
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Acknowledgements We appreciate the
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Appendix I: Arizona Asphalt Rubber
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3.0 Asphalt Rubber Binder Specifica
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Agencies Source Gradation Additives
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Agencies Source Gradation Additives
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Agency CRM percentage Blending temp
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4.2 Material Property Testing of Te
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Table 4. Mix Design Parameter Compa
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under snow plow activity and freeze
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6.0 Terminal Blend Mix Specificatio
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Agency Ambient/pavement temperature
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8.2 Construction of Asphalt Rubber
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9.0 Summary and Recommendations for
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Appendix A: Ontario Specifications
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compound. Continue blending the RA
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1151.05.06.04 Rubberized Asphalt Ce
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i. Acceptance and pay adjustment of
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centipoises (see Note 1) LP-11 Cone
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1151.03 DEFINITIONS Section 1151.03
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1151.05.06 Rubber Modified Asphalt
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313.07.06.02 Paving Clause 313.07.0
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a) PFGAC, if the PFGAC is less than
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Appendix B: Ontario Specifications
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D. A letter from the CR supplier in
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313.07.15.06 Rubber Modified Asphal
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considered to be 0.65. Table R1 Tri
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supplier provides ingredients and i
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The Contractor shall be solely resp
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Section Limit defines the chainage
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The referee laboratory will be desi
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RUBBERIZED ASPHALT CONCRETE MIXTURE
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The CRM shall be sufficiently dry s
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special provisions. 2. The minimum
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AGGREGATE The aggregate for Type G
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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
Page 127 and 128: 414-6.02 Mineral Aggregate: Aggrega
Page 129 and 130: Mineral admixture shall be mechanic
Page 131 and 132: Before asphaltic concrete is placed
Page 133 and 134: furnished with the machine: Ski-typ
Page 135 and 136: The accepted quantities of asphalti
Page 137 and 138: Asphalt-Rubber Stress-Absorbing Mem
Page 139 and 140: If the asphalt-rubber membrane has
Page 141 and 142: Appendix M: Texas Asphalt Rubber Sp
Page 143 and 144: • a modifier is introduced separa
Page 145 and 146: A and B aggregates differ by more t
Page 147 and 148: Flat and elongated particles Tex-28
Page 149 and 150: When shown on the plans, the Engine
Page 151 and 152: (16) Development of JMF3. Evaluate
Page 153 and 154: At any time during production, the
Page 155 and 156: acceptable tolerances listed in Tab
Page 157 and 158: Appendix O: Texas Specifications -
Page 159 and 160: Gradation Requirements for Mineral
Page 161 and 162: Table 4 (continued) Test Methods, T
Page 163 and 164: Table 6 Master Gradation Bands (% P
Page 165 and 166: (13) Trial Batch Testing. Test the
Page 167 and 168: Hamburg Wheel tests meet the specif
Page 169 and 170: air voids will be determined based
Page 171 and 172: Contractor’s or the Engineer’s
Page 173 and 174: may make as many independent densit
Page 175 and 176: In-Place Placement Pay In-Place Pla
Page 177: a sampling port. Keep A-R binder fr
Page 181 and 182: Control records shall include at a
Page 183 and 184: Appendix R: Florida Asphalt Rubber
Page 185 and 186: 341-8 Placement of Asphalt Concrete
Page 187 and 188: AR-OGFC as specified in 401.03.03.E
Page 189 and 190: Submit to the ME a certification of
Page 191 and 192: Table 902.07.03-1 JMF Master Ranges
Page 193 and 194: Table 902.07.04-1 Production Contro
Page 195 and 196: Appendix T: Massachusetts Asphalt R
Page 197 and 198: °C per hour. 6. Mechanical Blender
Page 199 and 200: Appendix U: China Asphalt Rubber Sp
Page 201 and 202: g/cm 3 . It should not contain stee
Page 203 and 204: S16 0~3 100 80~100 50~80 25~60 8~45
Page 205 and 206: 矿料间隙率VMA (%) 不小于 19
Page 207 and 208: 试件击实温度 160~170 试件
Page 209 and 210: 初压开始温度 breakdown roller
Page 211 and 212: 压路机类型 Type of Roller 静
Page 213 and 214: 0.075mm ±2 ≤ 2.36mm 逐盘在线
Page 215 and 216: Blend Composition: 13.0% - 12.5mm A
Page 217 and 218: Percent Passing 100 90 80 70 60 50
Page 219 and 220: Draft 9-25-2011 % Air Voids 9.0 8.0
Page 221 and 222: Draft 9-25-2011 VFA 90.0 85.0 80.0
Page 223: Draft 9-25-2011 218
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