ghasem tahmoresi; Hassan Divandari
Volume 3, Issue 10 , January 2022, , Pages 49-58
Abstract
Annually, a part of the budget of different countries is spent on repairing and repairing the damages caused to the pavements. In our country, where most of the pavements are asphalt and the low resistance of pavements to dynamic loads and their short service life are among the most important problems ...
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Annually, a part of the budget of different countries is spent on repairing and repairing the damages caused to the pavements. In our country, where most of the pavements are asphalt and the low resistance of pavements to dynamic loads and their short service life are among the most important problems in the field of road protection and maintenance, which cause various breakdowns on the road. Instrumentation begins. Nanotechnology is used in pavement engineering due to its unique properties in improving the properties of asphalt mixtures. In the present study, a review of new ideas for the use of nano-clay, nano-iron oxide, carbon nanoparticles with different percentages as a modifying additive in asphalt bitumen has been done. Then, the mechanical properties and behavior and temperature sensitivity properties of the modified asphalt mixture with nanomaterials that have the ability to improve the performance of the flexible asphalt surface are investigated. And the effect of using nanoparticles with lower percentages and better performance for a way resistant to environmental factors with a longer useful life on the asphalt mixture has been obtained. Research shows that the addition of optimal amounts of nanomaterials to modify asphalt bitumen increases the strength, durability, flexibility, fatigue resistance, slip resistance, impermeability and ease of application of asphalt mixtures. Therefore, improving the mentioned properties increases the service life of flexible pavement.
Hadi Azizi; Hassan Divandari
Volume 2, Issue 12 , March 2021, , Pages 40-57
Abstract
Recently, with the advent of nanotechnology and the manufacture of nanoparticles, a huge change has taken place in the functional demands of materials. The role of the pavement surface layer, which is made of asphalt mixtures, in the performance of pavements is inevitable. The use of nanotechnology in ...
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Recently, with the advent of nanotechnology and the manufacture of nanoparticles, a huge change has taken place in the functional demands of materials. The role of the pavement surface layer, which is made of asphalt mixtures, in the performance of pavements is inevitable. The use of nanotechnology in the construction of transportation infrastructure is roughly equivalent to the human effort to send humans to the moon in the 1960s. In 2005, the idea of building asphalt for highways that could repair themselves seemed far-fetched to many. Therefore, the asphalt industry still needs a transformation so that people can see the possibilities of nanotechnology and understand its benefits. Due to the compositional nature of the asphalt mix, the potential for improvement in the mechanical properties of asphalt using nanotechnology is very important. Modification of nanomaterials began with engineering changes in the molecular structure of asphalt with the aim of influencing the properties of these materials. Nanoscale modifiers can react with bitumen to change the chemical and molecular structure of the bitumen, which can lead to better asphalt performance. In recent years, the use of nanoparticles in changing the behavioral and chemical properties of asphalt has been considered by researchers and researchers have conducted numerous experiments to study these properties in order to improve the properties of asphalt mixtures made with nanoparticles, but this science still needs To more extensive research in order to achieve more comprehensive and accurate results. This paper reviews the studies on the effect of different nanoparticles on the production of cold asphalt in factories produced with emulsion bitumen.
