Effect of Silicon Carbide Nanotube(SiCNT)on the Mechanical Properties and Moisture Susceptibility of Hot Mix Asphalt

Asphalt pavements are damaged by moisture. Strength loss is caused by moisture damage. Anti-stripping agent is used to address this damage in asphalt mixtures. Bitumen modification is also effective method to prevent moisture damage. To this aim, in this study, bitumen was modified by silicon carbide nanotube (SiCNT) in three percentages (1%,3% and 5%) by weight. After the modification effort was performed, asphalt mixtures were designed according to SuperpaveTMprocedure. Indirect Tensile (IDT) Strength test was employed determining moisture damage in asphalt mixtures modified by SiCNT. As a result, moisture susceptibility of two percentages (3% and 5%) of SiCNT ensured the specification limit.

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