Keywords

Copper oxide nanoparticles, CuO NPs, Chemical method, Green method, Atomic Force Microscopy, Bacteria, Fungi and Biofilm.

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Keywords

In this work, the effect of microwave on asphalt, heating rat, resistance to deformation and retain stability was examined. Two different asphalt samples were used. The first, standard asphalt, A and the second one with %2 of sulfur in bitumen, B have been exposed to microwave. The measured temperature on the surface showed an increase up to 120 ºC in 5 minutes for sample A, while it reached to 145 ºC for sample in the second cycle of exposure to microwave in the same time. The increase rate in temperature for B samples was slightly lower. The presence of sulfur in asphalt reinforced the physical properties and the asphalt became more resistant to water and rutting for sample B after exposure to microwave radiation. Theoretically, the rise of temperature was found to be, 0.64 ºC/minute for one ton of asphalt needing microwave power energy of 1000 watt, but practically, some of this energy loss can be attributed to the conductivity and the penetration of the wave out of asphalt region. This study proved that the better incident angle reducing this loss by using the equation ɵ=sin-1, x/, 1/ α, and was found to be 28ºC and 37ºC for sample A and B respectively. The results showed the possibility of using microwave radiation in repairing the damaged roads asphalt with economic effective and green method.

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