Standard method for penetration of bituminous materials

ASTM D5

Summary

The purpose of ASTM D5 is to measure the penetration values of bituminous materials and asphalt.

Test Details

ASTM D5 uses a penetrometer with a standard needle to test semi-solid and solid bituminous materials, such as roofing shingles. A sample is melted, cooled, and subjected to repeat contact with a needle to determine its penetration value. Different samples may be prepared to test for a variety of variables, such as temperature and other service conditions. A higher penetration value indicates a softer consistency.

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