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M-002 Preparation of Compacted Concrete Specimens of Modified and Unmodified Hot Mix Asphalt by Means of the <strong>SHRP</strong> Gyratory Compactor M-008 Preparation of Test Specimens of Bituminous Mixtures by Means of Rolling Wheel Compaction M-007 Short- and Long-Term Aging of Asphalt Concrete Mixtures 2.2 ASTM Documents D 8 Standard Definitions of Terms Relating to Materials for Roads and Pavements D 3497 Standard Test Methods for Dynamic Modulus of Asphalt Mixtures D 3549 Method for Thickness or Height of Compacted Bituminous Paving Mixture Specimens E 1 Specification for Thermometers 3. TERMINOLOGY 3.1 Definitions for many terms to asphalt are found in the following documents: 3.1.1 ASTM D8 Standard Definitions 3.1.2 AASHTO MP1 Performance-Graded Asphalt Binder 4. SUMMARY OF PRACTICE 4.1 Compacted asphalt concrete test specimens are subjected to a water and temperature conditioning process. The water sensitivity characteristics of the compacted mixtures are determined based upon measurements of percent stripping, the environmental conditioning system (ECS) modulus, and the coefficients of permeability for air and water flow. 5. SIGNIFICANCE AND USE 5.1 The measured water sensitivity characteristics may be used to evaluate or characterize asphalt concrete mixtures. 5.2 The water sensitivity characteristics of asphalt concrete mixtures can be used to determine their suitability for use as highway paving materials. This information may also be used to compare and select binders, modifiers, mixtures, additives, and aggregates for asphalt concrete. 138
6. APPARATUS 6.1 Environmental Condition System (ECS)--Any closed-loop computer-controlled test system that meets the minimum requirements outlined in table 1. The ECS must be capable of within an asphalt concrete specimen increasing the temperature to 100°C and decreasing it to -20°C within 2 hours. It must be able to "pull" distilled water through a specimen at specified vacuum levels. The ECS must be able to apply axial load pulses (220 4- 5 N static and 6700 4- 25 N dynamic) in a haversine wave form with a load duration of 0.1 s and a rest period of 0.9 s between load pulses. The system must also be capable of measuring axial deformations and be equipped with computer software which can compute axial compressive stress and recoverable axial deformation strain at various load cycles. In addition, the ECS must be capable of applying loads sufficient to obtain deformations between 50 to 100 #strain. The ECS is illustrated in figures 1, 2, and 3. Table 1. Minimum Test System Requirements Measurement and Control Parameters Range Resolution Accuracy Load (compression) 0 to 6700 N _< 2.5 N + 5 N Axial Deformation 0 to 6.5 mm < 0.0001 + 0.0001 Chamber Temperature -20 to 100*C _< 0.5°C + 0.5oc Vacuum Pressure 0 to 635 mm Hg < 25 nun Hg + 25 mm Hg Air Flow 20 to 20,000 cm3/min < 20 cm3/min + 10 cm3/min Water Flow 0 to 2525 cm3/min < 2 cm3/min -1- 1 cm3/min Water Reserve Temperature 25 + 3°C < 0.50C + 0.5°C 6.2 Testing Machine--a pneumatic or hydraulic testing machine that meets the requirements outlined in section 4.3 of T167. 6.3 Specimen End Platens--Two aluminum end platens are shown in figure 4. The end platens shall be 102 4- 2 mm diameter by 51 4- 2 mm thick. Each end platen will have a drainage hole at its center that is 4.76 4- 0.5 mm in diameter and one side of each end platen will be patterned with grooves as shown in figure 4. In addition, the platen must have a groove around its perimeter at mid height which is of sufficient width and depth to hold the O-rings described in section 6.5.2. 6.4 Perforated Teflon Disks--As shown in figure 4. The perforations must coincide with the grooving pattern in the specimen end platens. 139
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SHR -A-379 The SUPERPAVE Mix Design
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Acknowledgments The research descri
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M-003 Determining the Shear and Sti
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Introduction This volume of the Fin
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Table 2. AASHTO and Other Test Meth
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T48 Method of Test for Flash and Fi
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10. KEY WORDS Asphalt binder, aspha
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Table 1. Performance-Graded Asphalt
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2.2 ASTM Standards: C802 Conducting
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7. APPARATUS 7.1 Bending Beam Rheom
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7.6 Calibrated Thermometers--Calibr
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11.3 Perform a daily quality contro
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NOTE9.--The specified preload on th
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dG d2 --_ I d __
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CO U_ P z_ MLLI L_O° _ _ _c_ r_ j4
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m) _L wO O_ W _Z _W W_ Z w W_ 0 _ w
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1.4 Maximum bending stress--The max
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Sy = log S(8) + log S(15) + ... log
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Z 1.3 1.2 1.1 , , .... J 1 • '; "
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T240 Test Method for Effect of Heat
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5.2 The complex shear modulus is an
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7. HAZARDS 7.1 Standard laboratory
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9.1.1.2.3 A thermocouple probe shal
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Typically, reliable test results ma
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figure 1 can be generated by gradua
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150 "ZERO" STRAIN VALUE O" STRAIN V
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5.3 For evaluating an asphalt binde
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time. A change in the load signal e
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9.1.1 Load cell--Verify calibration
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11.2 Immediately after demolding, p
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13.1.5 the average failure strain,
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IA A 5,0 I 6 0 86,0 9,5 FILLET O,K.
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--__6_- -_A AL AL _ o 0 _ _ _ "_ f-
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I __;___ i --_'-- :" (_ . /_/Spring
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points within the pressure vessel a
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NOTE7.--Aging temperature in the PA
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13. KEY WORDS Accelerated aging, el
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to temperaturetransducerand te_llpe
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3. SUMMARY OF METHOD 3.1 The paving
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7. PRECAUTIONS 7.1 Solvents should
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9.4 Final Extraction and Recovery 9
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Glass Wool Plug Figure 2. Extractio
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5.761 in I.D. 6 holes 3/16 in I.D.
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1/4 I.D. 5 3/4 in I.D. 6 holes 5/16
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Polypropylene Cloth Filter I" .....
Page 95 and 96: 114 in I.D. 11 1/4 in I.D. 8 holes
Page 97 and 98: 3. SUMMARY OF TEST METHOD 3.1 A sol
Page 99 and 100: drying should be re-dried. Caution:
Page 101 and 102: 8.16 Clean the funnels, volumetric
Page 103 and 104: Adsorption/Desorption Testing Data
Page 105 and 106: 2.3 ASTM Standards: D 4402 Measurem
Page 107 and 108: 5.6.3 Start time of test; 5.6.4 Spe
Page 109 and 110: 9.1.1 Weigh the aggregate fractions
Page 111 and 112: 11. CALCULATIONS AND INTERPRETATION
Page 113 and 114: 3.1 Test System--The test system is
Page 115 and 116: 4.3 Determine Air Void Content--Det
Page 117 and 118: • vertical displacement of the sp
Page 119 and 120: The following engineering quantitie
Page 121 and 122: the axial actuator is under closed
Page 123 and 124: Figure 2. Platen-Specimen Assembly
Page 125 and 126: Figure 4. Positioning of Vertical a
Page 127 and 128: tO0 © © ....... OT...=.c on A TEM
Page 129 and 130: Standard Method of Test for Determi
Page 131 and 132: 3. SUMMARY OF METHOD 3.1 This test
Page 133 and 134: 6.5.1 For analog strip-chart record
Page 135 and 136: 8. PROCEDURE 8.1 Measure the bulk s
Page 137 and 138: movement per minute. Both the horiz
Page 139 and 140: If E is greater than 0.01, substitu
Page 141 and 142: Table 1. Correction Factors for Hor
Page 143 and 144: Figure 2. Specimen Loading Frame wi
Page 145: Standard Method of Test for Determi
Page 149 and 150: 9.3 Heat or cool the asphalt concre
Page 151 and 152: pressed. Otherwise, measure and rec
Page 153 and 154: 10.7.2.3 Apply a repeated axial com
Page 155 and 156: 11.3.1 Peak Stress (kPa) per load c
Page 157 and 158: 12.1.3 Aggregate Type and Gradation
Page 159 and 160: Specimen Temperature Hi/Lo Limit Pr
Page 161 and 162: i Pressure Differential Gauge /_ 0
Page 163 and 164: I0 0 0 0 0 0 0 0 0 Ooo00 0 0 '_,Oo
Page 165 and 166: " Total Elastic 0 Ei._ 0 121 Plasti
Page 167 and 168: T201 Method of Test for Kinematic V
Page 169 and 170: 6.4.4 One metal spatula or spoon 6.
Page 171 and 172: 11.1.1 Asphalt Binder Grade 11.1.2
Page 173 and 174: D 1561-81a Preparation of Bituminou
Page 175 and 176: After filling, close all containers
Page 177 and 178: l i /l Gmb = . (1) B-Cwhere A = Mas
Page 179 and 180: 8. REPORT 8.1 The report shall incl
Page 181 and 182: 1 RAMP, ..:i!i!iiiii:i:i:i:i:i:i:i:
Page 183 and 184: Standard Method of Test for Determi
Page 185 and 186: 3.3 Epoxy Nut to Neutral Axis of Sp
Page 187 and 188: 5.1.6 Cumulative Dissipated Energy
Page 189 and 190: plot 6.1.11 Plot of Dissipated Ener
Page 191 and 192: Figure 2. Nut Epoxied to Neutral Ax
Page 193 and 194: Figure 4. Nut/Block/Screw/LVDT Conn
Page 195 and 196: 0 OO £ m -r"_ mlO 5 10 4 , [ 'T I
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As a minimum, the test system, shou
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With the ink marker, trace diar_.et
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5. CALCULATIONS A_er the specime_ f
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Step Motor L,.._ Loading Rod Swivel
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ATHENA TEMPERATURECONTROLLER ii:!i:
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Standard Practice for The Laborator
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2.2 SHRP Documents B-006 Extraction
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using the same SUPERPAVE ® perform
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must be used with the modifier from
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8.2.3 Sections 8.3 and 8.4 present
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8.8.2 Conditioning and Testing--Car
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9. LABORATORY EVALUATION OF AGGREGA
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shear, volumetric and frequency swe
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12.2 The HMA plant should produce t
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Table 1. Modifier Selection and Cha
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Table 5. Guidelines for Binder Modi
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Standard Practice for Grading or Ve
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6. TEST PROCEDURE FOR GRADING AN UN
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7. TEST PROCEDURE FOR VERIFYING THE
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8. REPORT 8.1 If the grade of the a
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1.4 In order to attain adequate pre
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5.4 Calculate the bulk specific gra
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Standard Practice for Measurement o
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Table 1. Test Matrix for Level 2 Mi
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6. SPECIMEN PREPARATION 6.1 All tes
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Record axial deformation, shear def
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7.3.5 Since the specimen will be su
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NOTE 15.--At each temperature, the
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Table 7. Time Estimate for Level 2
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NOTEA1.2.--This stress-controlled t
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