Pre-Construction Testing
| Evaluation of Existing Pavement Structure | If pavement distresses suggest weak subgrade, or if traffic levels are forecast to increase, check the strength of pavement and subgrade layers with Falling Weight Deflectometer FWD or Dynamic Cone Penetrometer DCP | Recommended |
|---|---|---|
| Ground Penetrating Radar (GPR) | Verify thickness consistency of existing asphalt and granular layers | Optional |
| Pavement Sampling | Obtain material for mix design and verify thickness of asphalt layers | Required |
| Mix Design | Conduct mix design for emulsified asphalt in accordance with CR201 or AASHTO PP 86-17 and MP 31-17. Conduct mix design for foamed asphalt in accordance with CR202. | Required |
| Measuring existing slope / cross fall | Ensure CIR can be constructed per contract requirements | Recommended |
Construction Testing
|
Bituminous Recycling Agent Injection Rate |
Verify amount of recycling agent per mix design and accuracy of meter readings by volumetric distribution |
Required |
|
Asphalt for Foaming |
Supplier generated COA or laboratory testing to comply with mix design parameters |
Recommended |
|
Asphalt Temperature for Foaming |
Probe or infrared temperature gun |
Required |
|
Asphalt Foaming Properties |
Expansion Ratio and Half-life |
Required |
|
Emulsified Asphalt |
Visual sieve test on site |
Recommended |
|
Emulsified Asphalt |
Supplier generated COA or laboratory testing to comply with mix design parameters |
Recommended |
|
Emulsified Asphalt Temperature |
Probe or infrared temperature gun |
Recommended |
|
Cement and Lime |
Supplier generated COA |
Recommended |
|
Cement Dry Spread Rate |
Volumetric distribution |
Required |
|
Cement and Lime Slurry Application Rate |
Volumetric distribution |
Required |
|
Lime or Cement Slurry Solids |
% solids by drying or hydrometer |
Recommended |
|
Corrective Aggregate Gradation |
Supplier generated COA or laboratory analysis (AASHTO T 11 and T 27 or ASTM C117 and C136) |
Required |
|
Corrective Aggregate Physical Properties |
Supplier generated COA or laboratory analysis (AASHTO T 96, T 176 or ASTM C131, D2419) |
Recommended |
|
Corrective Aggregate Addition Rate |
Volumetric distribution |
Required |
|
RAP Maximum Particle Size |
AASHTO T 27 ASTM C136 Air dried or wet gradation |
Required |
|
RAP Gradation |
Air dried or wet gradation measured to No. 30 Sieve |
Recommended |
|
RAP Temperature |
Probe measurement or infrared temperature gun |
Recommended |
|
Moisture Content of Recycled Mixture |
AASHTO T 329 AASHTO T 265, ASTM D2216 or ASTM D4643 |
Recommended |
|
Control Strip |
Nuclear gauge per AASHTO T 355 (ASTM D2950) or Owner Agency equivalent |
Required |
|
Depth of Milling |
Tape measurement |
Recommended |
|
Cross-slope |
4 ft. (1 m) Smart level |
Recommended |
|
Depth of Recycled Material |
Depth probe measurement |
Recommended |
|
Mat Width |
Tape measurement |
Recommended |
|
Recycled Material Compacted Density |
Nuclear gauge AASHTO T 355 (ASTM D2950) or Owner Agency approved method |
Required |
Post-Construction Testing
| Visual Appearance | Verify there are no unacceptable defects before placing surface course | Required |
|---|---|---|
| Mat Moisture Content After Curing | AASHTO T 329 or AASHTO T 265 (ASTM D2216 or ASTM D4643) | Required |
| Surface Tolerance | 10 ft. (3 m) Straight edge | Recommended |
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