نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده مهندسی عمران، دانشگاه پیام نور (واحد تهران شمال)، تهران، ایران.
2 دانشکده مهندسی عمران و محیط زیست، دانشگاه صنعتی امیرکبیر (پلی‌تکنیک)، تهران، ایران
3 دانشکده مهندسی عمران، دانشگاه سمنان، سمنان، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Although one of the successful modifications for pavement asphalts was the blending of asphalt and the recycled crumb rubber using conventional wet process, problems with asphalt rubber such as phase separation and weakness in workability, which led to the introduction of the terminal blend process (TB) for the proper blending of asphalt and rubber. Rubber particles are completely digested in an asphalt binder due to the terminal blending process, which could cause a reduction in viscosity and a weakness at high temperature for TB rubberized asphalt compared to conventional asphalt rubber. In order to reduce the problems of TB rubberized asphalt, it is necessary to modify it. The main aim of this paper is to modify the TB rubberised asphalt by adding 2% and 4% of the nanoclay. First, after preparation of seven asphalt samples, the prepared nanocomposite structure was analysed using XRD and SEM tests. Then, the TB rubberised asphalt nanocomposite ageing, rheological, and physical specifications were investigated. The results showed that modification of TB rubberised asphalt by nanoclay reduced the temperature susceptibility and phase separation of it. On the other hand, it has been shown, compared to TB rubberised asphalt, TB rubberised asphalt nanocomposite has a high viscosity, softening point, and ageing resistance and also improved performance high temperatures.
کلیدواژه‌ها [English]
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