The feasibility of waste nylon filament used as reinforcement in asphalt mixture
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The recycle and reuse of waste nylon filament is a new problem. The aim of this paper is to discuss the feasibility of waste nylon filament used as reinforcement in asphalt mixture (AM). Before preparation, the physical and mechanical properties of waste nylon filament were investigated. Then the waste nylon filament was mixed with asphalt and aggregate to prepare waste nylon filament asphalt mixture (WNFAM) using Marshall design method. The properties of WNFAM were evaluated through Marshall stability test, rutting test, flexural test and freeze-thaw split test. The related results indicate as follows: waste nylon filament has an excellent physical and mechanical property, and can be used as reinforcement in asphalt mixture; the reasonable asphalt content is 5.0%-5.5%, and the waste nylon filament is 0.1%-0.2%. Besides, the addition of waste nylon filament can improve the high-temperature stability, low-temperature crack resistance and durability of asphalt mixture. It is the binding effect provided by the waste nylon filament on the aggregate and the fiber reinforced composite strength theory that are attributed to this improvement and reinforcement. The research result can offer technical support for waste nylon filament used in road construction materials.
KeywordsWaste nylon filament Property Asphalt mixture Performance Mechanism
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This research was sponsored by Yangzhou Science and Technology Development Project (YZ2016266).This research was also sponsored by Qing Lan Project of JiangSu Province (2020).
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