Test Details The test method described in ASTM D4402 uses a rotational viscometer to measure a material’s resistance to rotation at a given temperature. Torque and speed measurements are recorded to calculate the viscosity of the bitumen sample. This data can be used...
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...
Test Details Unlike substances such as water or plastic, bitumen does not have a clearly defined melting point. In many applications, it is vital to know the temperature threshold at which the material may soften enough that product performance could be impacted. The...
Test Details The Solar Reflectance Index (SRI) is an objective measurement of how a given surface reacts to heat. This may include the surface temperature of the material, how much heat is reflected away from the material, and how much heat is absorbed. ASTM E1980 is...
Test Details ASTM C1371 uses data captured by a portable differential thermopile emissometer to quantify the emittance of materials with a thermal conductance of 1100 W m-2 K-1 or greater, near room temperature. Many opaque roof materials are assessed using the...
