Laboratory Test on Bitumen
Crude petroleum obtained from different sources contains different proportions of different constituents. Hence its properties may differ. Therefore to judge their suitability as binders, following tests are recommended;
i) Penetration test
ii) Ductility test
iii) Softening point test
iv) Specific gravity test
v) Flash point and fire point test
vi) Float test
vii) Viscosity test
viii) Loss on heating test
ix) Solubility test
To determine all of these properties, a variety of tests have been specified by Institutions like ASTM, I.S.I., Asphalt institute and B.S.I. Here ASTM is followed. Prepared samples are tested to determine some of above properties.
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