ASTM D7226-13 (R2017) PDF Download

ASTM D7226-13 (R2017) is a test method used to measure the viscosity of emulsified asphalts. The viscosity of emulsified asphalts is an important factor in determining their flow properties and their utility in various applications. For example, the viscosity affects the sprayability and workability of the material when used for road construction.

This test method is specifically designed to measure the apparent viscosity of emulsified asphalt at a specified temperature, usually 50°C, but it can also be performed at other agreed-upon temperatures. The rotational paddle viscometer is used to automate and standardize the measurement process, ensuring consistent results. The test involves rotating the paddle at a preset speed of 100 r/min and measuring the resistance to rotation, which is an indication of the viscosity of the emulsified asphalt.

The standard applies to all types of emulsified asphalts described in ASTM Specifications D977 and D2397. By providing a standardized method for viscosity measurement, this test method helps in evaluating the flow properties and workability of emulsified asphalts, allowing for better quality control in their production and application.