Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
D3319-23 – Standard Test Method Technical Guide
📖 Scope and Significance
ASTM D3319-23 provides a standardized laboratory procedure for estimating the polishing potential of coarse aggregates intended for use in bituminous pavements. By simulating the mechanical polishing action of vehicular traffic, this practice enables engineers to classify and rate aggregates based on their ability to maintain skid resistance over time. The test focuses on the frictional properties measured using the British Pendulum Tester.
The standard emphasizes that the quality of results depends heavily on the competence of the testing personnel and the calibration of the equipment. Agencies meeting the requirements of Specification D3666 are generally considered capable of performing this procedure reliably. Regarding units, the values stated in inch-pound units are regarded as the standard, while SI units in parentheses are provided for information only. An exception is made for sieve cloth specifications, where per Specification E11, SI units are the standard for wire cloth openings and wire diameters.
⚠️ Competence and Reliability: The quality of the results produced by this standard are dependent upon the competence of the personnel performing the procedure and the capability, calibration, and the maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing.
🏗️ Unit Standardization: While inch-pound units are the standard for this practice, note that per Specification E11, the dimensions of wire cloth openings and wire diameters in sieves are considered standard in SI units. Inch-pound designations for sieves are provided in parentheses for information.
📊 Key Terminology and Measured Properties
The standard defines specific metrics to quantify the friction of aggregate test specimens throughout the polishing sequence. All measurements are taken using the British Pendulum Tester, following the principles of Test Method E303.
| 🟦 Metric | 📏 Definition |
|---|---|
| Initial Friction Value (PV-i) | The British Pendulum Tester reading on the test specimens before they are subjected to accelerated polishing in the polishing machine. |
| Polish Value (PV-n) | A measure of the polish state reached by a test specimen subjected to the specified hours (n) of accelerated polishing. The measurement is made using the British Pendulum Tester as described in this practice and Test Method E303. |
| Residual Polish Value (RPV-n) | The value recorded when a constant PV-n is achieved four consecutive times with repeated swings of the pendulum, indicating a stable state of polish. |
🛠️ Referenced Standards and Supporting Equipment
The successful execution of this practice relies on several key ASTM standards to govern materials, sampling, and equipment specifications.
| 📜 Standard © 2026 TNLab — This article is a technical interpretation for reference only. The original standard as published by ASTM International takes precedence. 📥 Standard Documents Download |
|---|