Modification of Bitumen with Carbonized Rice Husk

Abstract The bitumen was modified with carbonized rice husk before and after mechanochemical activation. After mechanochemical activation, the carbon content in the carbonized rice husk increased to 57.5% and microstructured particles were found. Carbonized rice husk led to an increase in penetration from 11,0 to 14,0 dmm, the average contact angle from 94,0 to 112,3° and value of the difference in the contact angle from 2 to 6°, a decrease in the softening point from 105,0 to 84,4 °C, and a shift in the loss tangent curves from 118 to 138 °C.