Dynamic creep analysis of Electric Arc Furnace Dust (EAFD)

Dynamic creep analysis of Electric Arc Furnace Dust (EAFD) – Modified asphalt

Alsheyab, Mohammad A.T. / Khedaywi, Taisir S.

Graphical abstract

Highlights•EAFD is a hazardous waste formed as a byproduct from steelmaking industry.•EAFD-modified asphalt is one solution to tackle this hazardous material.•Mechanical properties of pavement with EAFD-modified asphalt are promising.•The optimum values of %EAFD depend on the load and temperature.

AbstractElectric Arc Furnace Dust (EAFD) is one of the by-products of steel making industry which has been classified as hazardous materials. This research aims at solving the problem of this hazardous waste by solidification/stabilization through mixing it with asphalt concrete mixtures. One type of asphalt cement and one type of aggregate were used. EAFD was used as an additive to the asphalt cement with five contents (0%, 5%, 10%, 15% and 20%) by volume of binder. Marshall Specimens were prepared, and exposed to simulation of dynamic creep tests. Three testing temperatures (25, 40 and 55°C) and three loading frequencies (1, 4 and 8Hz) were used. Resilient modulus, creep stiffness, and accumulated micro-strain were analyzed. Results showed that the mixture of asphalt with EAFD has positive impact on enhancing the resilient modulus and creep stiffness and on decreasing the accumulated micro-strain in most operation conditions at different temperatures and frequencies. The optimum mixture with highest performance was at 10% of EAFD.