نتایج جستجو برای: bitumen modification
تعداد نتایج: 129104 فیلتر نتایج به سال:
Although various polyolefins have intermittently been used for making roads since the 1980s, recycling of plastic waste into raises new challenges related to production, performance and durability plastic-modified asphalt. This review critically discusses incorporating recycled plastics bitumen/asphalt in terms selection, chemical compatibility, long-term potential contributions fuming, micropl...
The development of transportation plays an important role in the development of nation. With flexible pavements being widely used in India, steps must be taken to increase the life of the bituminous pavements. Flexible pavements are often plagued with problems of cracking and rutting due to repeated traffic loads. Hence one needs to address these problems in order to improve the performance of ...
Syrian petroleum coke, produced by a delayed coking unit, is characterized by a high percentage of fines which tends to reduce its commercial value. Blending coke fines using appropriate binders, such as bitumen and polyacrylic acid, can lead, however, to an improved coke that is similar in structure, appearance and other properties to better-quality coke lumps. In this work, samples of Syrian ...
Bitumen fumes emitted during road paving or roofing contain polycyclic aromatic hydrocarbons (PAHs). Experimental studies have been previously performed to test the carcinogenic potency of bitumen fumes. Some of them have been criticised either on the grounds that the fume condensates were not representative of fumes to which humans are exposed or because the fumes were never characterised in t...
Neural Networks technology provides several reliant analysis in many science and technology applications. In particular neural network is often applied to the development of statistical models for intrinsically non-linear systems, since neural networks behave better in complex conditions. In this research, applications of neural networks in determination of optimum bitumen content, Marshall Sta...
Plastic waste that has not been appropriately managed caused concern for various stakeholders and a negative impact on the environment. A way to minimize this issue is by promoting circular economy through recycling. Despite this, many plastic wastes cannot be economically recycled; one of them multilayer plastics due difficulty in sorting out types materials contained layers. As an alternative...
BACKGROUND The negative health effects of polycyclic aromatic hydrocarbons (PAHs) are well established for modern human populations but have so far not been studied in prehistoric contexts. PAHs are the main component of fossil bitumen, a naturally occurring material used by past societies such as the Chumash Indians in California as an adhesive, as a waterproofing agent, and for medicinal purp...
Human soft tissue specimens obtained by dissection of Greco-Roman Period mummies buried in the Dakhleh Oasis in Egypt's Western Desert had radiocarbon analytical results many of which were substantially older than accompanying artifacts suggested. Mass spectrometry suggested the presence of hydrocarbons. Gas chromatography/mass spectrometry (GCMS) confirmed that the “resin” applied to these bod...
Bitumen extraction from oil sands is the core process in the production of oil from oil sands. This floatation process is carried out in large vessels called separation cells. Optimal control of the interface between Bitumen froth and Middlings in these cells can result in a significant improvement in Bitumen recovery and increase process efficiency downstream, resulting in large economic benef...
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