Summary of Rubber Modified Asphalt Product Specifications around ...

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Job Mix Formula Verification HMA produced for JMF verification must be produced using the WMA technology shown in the JMF submittal. Use the OBC specified on your CEM-3512. No adjustments are allowed. When RAP is used, the asphalt binder set point for HMA must be the OBC specified on your CEM-3512 minus RAP percentage multiplied by the combined average asphalt binder content of the processed fractioned RAP stockpiles. Perform the AASHTO T 324 (Modified) test for compliance with the mix design requirements. Submit test data and one tested sample set from the AASHTO T 324 (Modified) test. The Engineer may verify that the HMA complies with the mix design requirements for AASHTO T 324 (Modified) and California Test 371. If you request, the Engineer verifies RHMA-G-WMA quality requirements within 5 business days of sampling. Production General HMA and RHMA produced using WMA technology must be produced at a temperature between 290 °F and 325 °F. Comply with Section 39-1.08A, "General," of the Standard Specifications except the HMA plant asphalt binder set point for HMA production must be the OBC specified on your CEM-3511. When RAP is used, asphalt binder set point for HMA production must be the OBC specified on your CEM- 3511 minus RAP percentage multiplied by the combined average binder content of the processed fractioned RAP stockpiles. HMA additives used for antistrip treatment and WMA technologies may be either in a liquid or dry state. The HMA plant must have a sampling device in the feed line connecting the additive storage to the additive metering system. The sampling equipment must comply with California Test 125. Proportioning Warm Mix Asphalt Technologies HMA plants using WMA technology must comply with the Department's MPQP. Proportion all ingredients by weight. The HMA plant process controller (PPC) must be the sole source of ingredient proportioning control and be fully interfaced with all scales and meters used in the production process. The addition of the HMA additive must be controlled by the PPC. Weighing and metering devices used for the production of additive enhanced HMA must meet the requirements of the MPQP. When a loss-in-weight meter is used for dry HMA additive, the meter must: 1. Meet the requirements of the MPQP 2. Have an automatic and integral material delivery control system for the refill cycle Calibrate the loss-in-weight meter by: 1. Including at least 1 complete system refill cycle during each calibration test run 2. Operating the device in a normal run mode for 10 minutes immediately before starting the calibration process 95
3. Isolating the scale system within the loss-in-weight feeder from surrounding vibration 4. Checking the scale system within the loss-in-weight feeder for accuracy before and after the calibration process and daily during mix production 5. Using a 15-minute or 250-pound-minimum test run size for a dry ingredient delivery rate of less than 1 ton per hour 6. Complying with the limits of Table B, "Conveyor Scale Testing Extremes," in the MPQP Produce additive enhanced HMA by using either a continuous mixing or a batch type HMA plant. Liquid ingredient additive, including a normally dry ingredient made liquid, must be proportioned with a mass flow meter at continuous mixing plants. Use a mass flow meter or a container scale to proportion liquid additives at batch mixing plants. Continuous mixing plants using HMA additives must comply with the following: 1. Dry ingredient additives for continuous production must be proportioned with a conveyor scale or a loss-in-weight meter. 2. HMA PPC and ingredient measuring systems must be capable of varying all ingredient feed rates proportionate with the dry aggregate delivery at all production rates and rate changes. 3. Liquid HMA additive must enter the production stream with the binder. Dry HMA additive must enter the production stream at or before the mixing area. 4. When dry HMA additives are used at continuous mixing HMA plants, baghouse dust systems must return all captured material to the mix. 5. HMA additive must be proportioned to within ±0.3 percent of the target additive rate. Batch mixing plants using HMA additives must comply with the following: 1. Metered HMA additive must be placed in an intermediate holding vessel before being added to the stream of asphalt binder as it enters the pugmill. 2. When a container scale is used, weigh additive before combining with asphalt binder. Keep the container scale separate from other ingredient proportioning. The container scale capacity must be no more than twice the volume of the maximum additive batch size. The container scale's graduations must be smaller than the proportioning tolerance or 0.001 times the container scale capacity. 3. Dry HMA additive proportioning devices must be separate from metering devices for the aggregates and asphalt binder. Proportion dry HMA additive directly into the pugmill or place in an intermediate holding vessel to be added to the pugmill at the appropriate time in the batch cycle. Dry ingredients for batch production must be proportioned with a hopper scale. 4. Zero tolerance for the HMA additive batch scale is ±0.5 percent of the target additive weight. The indicated HMA additive batch scale weight may vary from the preselected weight setting by up to ±1.0 percent of the target additive weight. Production Data Collection The HMA PPC must produce an electronic log of production data consisting of a series of snapshots captured at a maximum of 1-minute intervals throughout daily production. Each snapshot of production data must be a register of production activity at that time and not a summation of the data over the preceding interval to the previous snapshot. The amount of material represented by each snapshot is the amount produced during the 0.5-minute interval before and the 0.5-minute interval after the capture 96
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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
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
Page 73 and 74: C. Asphalt modifier shall be tested
Page 75 and 76: B. Place one rubber ball on each si
Page 77 and 78: Test Parameter ASPHALT-RUBBER BINDE
Page 79 and 80: A. The temperature of the aggregate
Page 81 and 82: modifier. ASPHALT MODIFIER The asph
Page 83 and 84: sieve and record that number (next
Page 85 and 86: The Contractor shall provide a Haak
Page 87 and 88: modifier, and CRM. Paving asphalt a
Page 89 and 90: not more than 163°C after applying
Page 91 and 92: Appendix G: California Terminal Ble
Page 93 and 94: 6. California Test 371 test results
Page 95 and 96: Prepaving Conference Schedule a pre
Page 97 and 98: HMA Acceptance Quality Characterist
Page 99: Quality Characteristic Hot Mix Asph
Page 103 and 104: if the atmospheric temperature is b
Page 105 and 106: 3. From the center of the specified
Page 107 and 108: The asphalt-rubber shall contain a
Page 109 and 110: Appendix J: Arizona Specifications
Page 111 and 112: TABLE 413-3 MINERAL AGGREGATE CHARA
Page 113 and 114: source(s) of mineral aggregate, pro
Page 115 and 116: 413-7 Construction Requirements: 41
Page 117 and 118: discharge chute of the drier in ord
Page 119 and 120: Screeds shall include any strike-of
Page 121 and 122: in nominal thickness. (C) Rolling P
Page 123 and 124: Appendix K: Arizona Specifications
Page 125 and 126: 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
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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
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Draft 9-25-2011 218
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