INFLUENCE OF SWELLING TIME ON PROPERTIES OF RUBBER POWDER MODIFIED ASPHALT

Abstract

Abstract: A series of crumb rubber modified asphalt samples was prepared with different swelling times and analyzed by dynamic shear rheomter and bending beam rheometer. The influence of swelling time on properties of crumb rubber modified asphalt though analysis of high temperature parameters (viscosity, soft point, rutting factor) and low temperature parameters (ductility, creep stiffness). The results show that the properties of the modified asphalt were improved both at high and low temperature by adding rubber power into base asphalt, the compatibility and storage stability is better. However, the temperature sensitivity goes up as extending the swelling time, indicating slightly decrease of properties both at high and low temperature.

Key words: modified asphalt, swelling time, rheological property, rubber power, compatibility

CLC Number:

References

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