Nowadays, the increasing amount of wastes is a concerning reality and the environmental aspects has become a major priority. Following this worry, the purpose of this experimental study was to investigate the possibility of using pulp and paper inorganic wastes, named dregs and grits, in bituminous mixtures as aggregate replacement to reduce environmental effects of these wastes disposal. First...

Mining for coal and its utilization have various impacts on the surrounding environment. Huge volumes of waste materials which are by-products of both the underground and open cast coal mining, pose one of the major environmental hazards in addition to air pollution caused by coal burning in power plants in the Czech Republic. Some of these risks could be reduced when having accurate and compre...

Three hundred and five coal samples were taken from the main coal mines of twenty-six provinces, autonomous regions, and municipalities of China. The method of pyrohydrolysis was applied to measure the fluorine content in the samples, which exhibit logarithmic normal frequency distributions. The range of fluorine content in dry coal varies from 25 to 1230 mg/ kg with a geometric mean of 136 mg/...

blown bitumen (110/10) was mixed with heavy vacuum slops (h.v.s), 60/70 penetration grade bitumen and recycled isotactic polypropylene (ipp) at different levels. the resulting resins were used to impregnate non-woven poly(ethylene terephthalate) fibers to form composites. the modulus and penetration grade of the resulting bituminous resins were determined. it was found that these bituminous res...

This paper deals with the fundamental differences between industrial and paving-grade bituminous binders. The is presented in two main sections: 1) a review of materials’ colloidal structure required properties for paving applications; 2) wide range experimental tests which binders were studied compared. In this research, 160/220 bitumen was compared to same penetration lower penetration, 70/10...

Materials recycled with foam bitumen are promising materials for pavements economically and environmentally. However, there different opinions in the literature about how these positioned pavement. It is clear that their performances will not be suitable wearing course, but they used plant mixture base course because contain bitumen, neglected evaluation of materials. In study, 4 bituminous mix...