No abstract

There are large mines of natural bitumen around the world and low price make it a good opportunity for increasing of industrial usage of this material. This paper studies the possibility of producing new material in oxide bitumen properties range from combination of natural bitumen and pyrolysis fuel oil. To achieve this goal first used some experiments to determine the physical properties of raw materials and then after combining more natural bitumen and pyrolysis fuel oil in different samples some test including penetration, softening point and ductility test have been done and results have been compare to ASTM and BS standard. Ultimately seen this combination can produce bitumen with R115/15 and R95/25 grade.

No abstract

Need to proper roads and highways will increase with increasing automotive industry and development of cities and countries. Among petroleum products used in road construction and asphalt application for soil stability and adhesion between layers of asphalt are bitumen soluble and Bitumen Emulsions. Bitumen Emulsions are subset of water emulsion that in this type of emulsion dispersed phase is lipophilic and continuous phase is hydrophilic, for mixing these two phases used surface activating agents called emulsifier. Bitumen Emulsions are under other similar emulsion laws hence; basically Bitumen Emulsions from Thermodynamic point of view are unstable fluid and disperse. Considering the importance and benefits of using Bitumen Emulsions, this paper tries to show influence of various factors such as emulsion source, type and amount of emulsifier, particles size of emulsion and other properties of the emulsions are determined.

The structural phase state, microhardness, and wear resistance of the Fe 64 Ni 36 electrically depos ited coating treated with nitrogen ions is investigated. It is established that ion beam treatment leads to the formation of a solid solution of nitrogen in the matrix γ phase (γ N ), as well as the (Fe, Ni) 4 N nitrideγ' phase in surface layers of the Fe 64 Ni 36 coating. The microhardness of the surface layer of the Fe 64 Ni 36 coat ing modified by nitrogen ions increases to H 0.24 = 7600 MPa. It is shown that the ion beam treatment of the Fe-Ni coating leads to a substantial decrease in its wear intensity.