Pre-Construction Testing
Performing a mix design is crucial to the success of your project. The following tests are applicable when performing a mix design for either the McLeod Method or Kearby Method. Refer to the mix design section for more details on these design methods.
AGGREGATE
| Gradation | AASHTO T27/ASTM C136 | Required |
|---|---|---|
| Absorption | AASHTO T84-94 | Required for McLeod |
| Bulk Specific Gravity | AASHTO T84-94 | Required |
| Flakiness Index | CFLHD DFT-508 | Required for McLeod |
| Loose Unit Weight | ASTM C29 | Required |
ASPHALT CEMENT OR ASPHALT EMULSION
| Residue by Distillation | AASHTO T59/ASTM D6997 | Required |
|---|
MIXTURE
| Sweep Test | ASTM D7000 | Recommended |
|---|
The below are some of the tests that could be required or recommended when developing a specification. Please review your local specifications for area specific tests. Materials should be qualified before construction starts. Refer to ISSA A165 for the below target values.
AGGREGATE
| Gradation | AASHTO T27/ASTM C136 | Required |
|---|---|---|
| LA Abrasion | AASHTO T96/ASTM C131 | Required |
| Fractured Faces | AASHTO T335/ASTM D5821 | Required |
| Flat and Elongated | ASTM D4791 | Required |
| Flakiness Index | CFLHD DFT-508 | Optional |
| Soundness of Aggregate | AASHTO T104/ASTM C88 | Optional |
ASPHALT EMULSION
Tests on Emulsion
| Viscosity | AASHTO T72 | Required |
|---|---|---|
| Storage Stability | AASHTO T59/ASTM D6930 | 24 hour storage stability recommended if not used in 72 hours |
| Residue by Distillation | AASHTO T59/ASTM D6997 | Required |
| Particle Charge | AASHTO T59 | Optional |
| Sieve | AASHTO T59 | Required |
| Demulsibility | AASHTO T59 | Required |
Tests on Residue
| Ductility | AASHTO T51 |
Required for unmodified emulsions |
|---|---|---|
| Penetration | AASHTO T49/ASTM D5 |
Required |
| Elastic Recovery | AASHTO T301 |
Required |
| Float Test | AASHTO T50 |
Reqired for High Float Emulsions |
HOT ASPHALT CEMENT
| Viscosity | AASHTO T202 | Required |
|---|---|---|
| Penetration | AASHTO T49 | Required |
| Ductility | AASHTO T51 | Required |
| Elastic Recovery | AASHTO T | Required |
| Softening Point | AASHTO T53 | Required |
| Flash Point | AASHTO T48 | Required |
| Solubility | AASHTO T | Required |
| DSR | AASHTO T315 | Modified Tire Rubber Only |
Construction Testing
| Periodic checks of the application rate (aggregate and asphalt) | Recommended |
|---|---|
| Sampling and testing of the asphalt emulsion of binder | Recommended |
| Sampling and testing of the aggregate | Recommended |
Before taking samples, draw and dispose of 1 gal and then take two 1/2 gal samples.
Post-Construction Testing
| Percent Embedment | Sand Patch Test | Recommended |
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