ASTM D4402/D4402M-23 pdf download – Standard Test Method For Viscosity Determination Of Asphalt At Elevated Temperatures Using A Rotational Viscomete.
1.1 This testing procedure describes how to measure the apparent viscosity of asphalt within the temperature range of 40 to 260 °C [100 to 500 °F] using a rotational viscometer in conjunction with a temperature-regulated thermal chamber to control the testing temperature.
1.2 The values provided in either the SI (International System of Units), cgs (Centimeter-Gram-Second), or inch-pound systems are to be considered as separate standards. The values within each system may not be precise equivalents; hence, to adhere to the standard, each system should be used on its own. Combining values from these different systems may lead to non-compliance with the standard.
