نوع مقاله : مقاله پژوهشی
نویسندگان
1 عضو هیات علمی/دانشگاه صنعتی امیرکبیر
2 گروه مهندسی عمران، واحد بین المللی کیش، دانشگاه آزاد اسلامی، جزیره کیش، ایران،
3 دکتری، گروه راه و ترابری، دانشگاه علم و صنعت، تهران، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
valuation of Moisture Sensitivity of Modified Asphalt Mixtures with Nanofiber Carbn
ABSTRACT
In this study, the effect of using nanocarbon fiber as a bitumen modifier on the moisture sensitivity of asphalt mixtures has been investigated by considering the mechanism of its effect on the adhesion between bitumen and aggregate. In order to investigate moisture damage, indirect tensile strength test was used on samples made with two types of aggregates: limestone and granite. To simulate environmental conditions, samples of asphalt mixtures are subjected to 1, 3 and 5 ice-melting cycles.
The results of mechanical tests show that the use of nanofiber carbon (CNF) increases the ITS values and the indirect tensile strength ratio in both types of aggregates and thus reduces the severity of the expulsion event in the modified samples. Also, the use of 0.2% nanocarbon fiber has the best effect in increasing the resistance of asphalt mix to moisture damage.
KEYWORDS:
Indirect tensile test, modified bitumen; Moisture breakdown, nanofiber carbon
کلیدواژه‌ها [English]
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