Fiber Lightweight Aggregate Pipe Segment Fire Performance Study
DOI:
https://doi.org/10.54691/5jcrve41Keywords:
Fiber; Lightweight Aggregate; Pipe Segment; Fire; Mechanical Performance.Abstract
The material characteristics of fiber lightweight aggregate concrete pipes were analyzed, along with the bending toughness of fiber lightweight aggregate concrete. A review was conducted on the bending resistance performance of fiber concrete beams and pipes at normal and high temperatures domestically and internationally. It was found that steel fibers and polypropylene fibers exhibit a positive synergistic effect when used together. They enhance toughness and ductility significantly, contributing greatly to bending toughness. Hybrid fibers can partially replace steel reinforcement, optimize the arrangement of reinforcement, and improve the residual load-carrying capacity of concrete pipes. They effectively address issues such as tight reinforcement spacing in shield tunneling pipes.
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