PHASE II REPORT - Caltrans

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6.2 STOCKPILE AND STORAGE. If the mineral aggregates are stored or stockpiled, they must be handled in a manner that will prevent segregation and contamination. The aggregate will be accepted at the job site stockpile or when loading into the units for delivery to the laydown machine. The stockpile shall be accepted based on five gradation tests according to AASHTO T-2. If the average of five tests is within the gradation tolerances, the materials will be accepted. If the test results indicate that the material is outside the gradation limits, the material will be removed from the stockpile site or blended with other aggregate from the stockpile to achieve an acceptable product. Materials used for blending shall meet the requirements of Table 6.3 and shall be blended in an acceptable manner to assure a consistent product. Blending will require a new mix design. The aggregate shall be passed over a 3/8 inch (9.5-mm) scalping screen prior to transfer to the laydown machine to remove oversize material. 6.2.1 WATER AND ADDITIVES. Water shall be potable and free from harmful soluble salts or other contaminants. The slurry surfacing mixture shall be homogeneous during and following mixing and spreading and possess sufficient stability to prevent premature breaking in the spreading equipment. Additives may be added to the emulsion mix or any of the component materials to provide control of the setting characteristics of the mixture. They must be included as part of the mix design and be compatible with the other components of the mix. 6.2.2 MINERAL FILLER. Mineral filler may be used in the mixture and shall be introduced into the mineral aggregate and shall be an approved brand of non-air entrained Portland cement or hydrated lime that is free from lumps. Visual inspection and supplier certification are required. The amount of mineral filler to be added shall be part of the mix design process and shall be considered as part of the aggregate gradation. If additional consistency is required during the placement of the mixture, a +/- one percent change in mineral filler will be permitted without requiring a new mix design. 6.3 PAVING MIXTURE Prior to the beginning of work, the contractor shall submit a proposed mix design for approval to the contracting agency. A laboratory capable of performing the tests that are noted in Table 6.4 85
shall perform the mix design. The proposed slurry surfacing mixture shall conform to the requirements of Table 6.4. The percentages of each individual material shall be shown on the design form. Field adjustments may be necessary once the work is under way but individual materials shall be within the limits contained in Table 6.5. Set Time Table 6.4: Slurry Surfacing Mix Design Requirements Traffic Temperature Humidity Hi Med Low Hi Med Low Hi Normal Test or field Condition Units 95°F 77°F 50°F (35°C) (25°C) (10°C) 90% 50% PFS-1 (Mixing) Mixing Torque - maximum kg-cm 9 9 9 9 9 9 9 9 Mixing time - minimum Spread index - maximum @ 120 sec. 120 120 120 120 120 120 120 120 sec. kg-cm 12 12 12 12 12 12 12 12 Blot test - 30 sec. - clear clear water water N/A clear clear clear clear clear water water water water water Coating PFS-2 (Wet Cohesion) - 100% 100% 95% 95% 95% 100% 100% 95% 30 min. cohesion - minimum kg-cm 12 12 12 12 12 12 12 12 60 min. cohesion - minimum kg-cm 23 20 20 20 20 20 20 20 90 min. cohesion - minimum kg-cm 25 25 25 25 25 25 25 25 12 hr. cohesion - minimum PFS-3 (Abrasion Loss) kg-cm 28 28 28 28 28 28 28 28 30 min. loss - maximum g/m 2 200 200 400 300 300 300 300 300 1hr. loss - maximum g/m 2 Rapid 100 100 300 100 200 100 100 200 3 hr. loss - maximum g/m 2 PFS-1 (Mixing) 100 100 200 100 100 100 100 100 Mixing Torque - maximum kg-cm 9 9 9 9 9 9 9 9 Mixing time - minimum Spread index - maximum @ 120 sec. 120 120 120 120 120 120 120 120 sec. kg-cm 12 12 12 12 12 12 12 12 Blot test - 30 sec. - clear clear water water N/A clear clear clear clear clear water water water water water Coating - 100% 100% 95% 95% 95% 100% 100% 95% PFS-2 (Wet Cohesion) 30 min. cohesion - minimum kg-cm 12 12 12 12 12 12 12 12 60 min. cohesion - minimum kg-cm 23 20 20 20 20 20 20 20 90 min. cohesion - minimum kg-cm 25 25 25 25 25 25 25 25 12 hr. cohesion - minimum PFS-3 (Abrasion Loss) kg-cm 28 28 28 28 28 28 28 28 30 min. loss - maximum g/m 2 200 200 400 300 300 300 300 300 1hr. loss - maximum g/m 2 Slow 100 100 300 100 200 100 100 200 3 hr. loss - maximum g/m 2 100 100 200 100 100 100 100 100 86
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PHASE II REPORT Slurry Seal / Micro
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CALTRANS Fugro Consultants, Inc. Co
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CALTRANS Fugro Consultants, Inc. Co
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For the Phase II work, the research
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2.0 CHAPTER 2 INTRODUCTION 2.1 BACK
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3.0 Findings from the ruggedness te
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START Test Mix Components Accept Ma
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For all the above considerations, t
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Type II and III microsurfacings are
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“M” Refers to an ASSHTO Standar
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Viscosity: A property of the mix th
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3.6.2 The European Mixing Test Base
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Mix Torque kg-cm 70 60 50 40 30 20
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Clamping Pressure 200Kpa Interface
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Samples Holes 0.8 inches (~0.20 mm
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• Abrasion: CAT. This test may be
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3.7.1 Step 1: Materials Selection T
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3.7.6 Step 6: Evaluate the Long Ter
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4.2 LABORATORY TEST METHODS DEVELOP
Page 39 and 40: Table 4.2.2: TB-113 Results for Mix
Page 41 and 42: In addition to the “base mixture
Page 43 and 44: The resulting mix had the following
Page 45 and 46: Features: Produces a tangential flo
Page 47 and 48: Mixing Containers type and size: a.
Page 49 and 50: • 50 rpm mixing speed This config
Page 51 and 52: The shape of the traces for differe
Page 53 and 54: Figure 4.10: Mix M4 Trace with Stan
Page 55 and 56: The recommended mixing procedure fo
Page 57 and 58: Figure 4.14: AMT Trace for Mix M1,
Page 59 and 60: Figure 4.16: Automated Cohesion Tes
Page 61 and 62: As illustrated in Figures 4.17 and
Page 63 and 64: Note that the ratio of the two aver
Page 65 and 66: • Dry Loss Method - Two identical
Page 67 and 68: Loss (%) 35 30 20 15 10 5 0 Effect
Page 69 and 70: The differences in the samples were
Page 71 and 72: Both systems were correctly defined
Page 73 and 74: Time (Min) Wet Loss M1 (g) Table 4.
Page 75 and 76: observation. For long term abrasion
Page 77 and 78: 4.3.2 Evaluation of Cohesion-Abrasi
Page 79 and 80: 4.4 REVISED MIX DESIGN METHOD (VERS
Page 81 and 82: Step 5: Evaluate the Cohesion Prope
Page 83 and 84: 5.0 CHAPTER 5 RUGGEDNESS TESTING 5.
Page 85 and 86: These levels will be far enough apa
Page 87 and 88: 5.3.3 ACT Test For this test, the c
Page 89: 6.1.2 AGGREGATE Mineral aggregate s
Page 93 and 94: 6.5.2 TEST STRIP. With the coordina
Page 95 and 96: 6.6.5 MACHINE CALIBRATION. Each uni
Page 97 and 98: 6.7 METHOD OF MEASUREMENT 6.7.1 ARE
Page 99 and 100: Delays in the progress of the resea
Page 101 and 102: 2.4 IDA Werke EUROSTAR Power contro
Page 103 and 104: 4.3 If the mix does not break, the
Page 105 and 106: 8.0 PROCEDURE 8.1 Maintain the aggr
Page 107 and 108: 11.2.1.1 BT: brown color transfer t
Page 109 and 110: Note: Closing all other programs ru
Page 111 and 112: − Eurostar mixer - the parameter
Page 113 and 114: Figure A.5: Display of Functional U
Page 115 and 116: To stop the test, select the drop d
Page 117 and 118: 2.3 ISSA TB-100, Test Method for We
Page 119 and 120: 5.4 Suitable specimen casting mold
Page 121 and 122: 8.2 The amounts of material compone
Page 123 and 124: 9.2 Completely cover the specimen w
Page 125 and 126: APPENDIX C RESULTS OF RUGGEDNESS AM
Page 127 and 128: Figure C.2: Ruggedness Trials Trial
Page 129 and 130: Figure C.4: Ruggedness Trials Trial
Page 131 and 132: CEL#: 10-17749 LAB #: Date Tested:
Page 139 and 140: CAT: COHESION ABRASION TEST (FRENCH
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CEL#: 10-17749 LAB #: Date Tested:
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2.CAT-Cohesion Abrasion Test: Frenc
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GRADATION ANALYSIS FOR AGGREGATE A1
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Source: Lopke (A2) Aggregate: ISSA
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GRADATION ANALYSES FOR AGGREGATE A3
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SODIUM SULFATE SOUNDNESS FOR AGGREG
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SODIUM SULFATE SOUNDNESS FOR AGGREG
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ABRASION LOSS BY AASHTO T-96 FOR AG
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SAND EQUIVALENT FOR AGGREGATES A1,
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ABRASION LOSS BY ASTM D6928 FOR AGG
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CEL# 10-17749 Source: Sem Materials
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CEL# 10-17749 Source: VSS Emultech
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CEL# 10-17749 Source: Ergon Materia
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Automated Mixing Test Mix: M3 Agg:
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CEL#: 10-17749 1)apply tack coat to
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Aggregates: Emulsions: Mixes: CAT R
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ACT RESULTS FOR ALL MIXES TEST RESU
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ACT RESULTS FOR ALL MIXES 228
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not effective if placed on pavement
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Table F.1: Draft Outline for Refere
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David Peshkin will take the lead in
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Ride quality has been shown to impa
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agency will be held prior to constr
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An agency that desires to participa
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PHASE II REPORT - Caltrans

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