| Budget Amount *help |
¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
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| Outline of Final Research Achievements |
This research program focused on the effectiveness of recycled nylon fiber from used fishing nets as a reinforcing material of concrete and mortar. The addition of fiber results in the decrease in compressive strength of concrete because of fiber's low Young's modulus. The reduction in strength is observed to be lower with higher fiber fraction and longer fibers. The addition of fiber affords a more ductile mode of failure, which leads to an increase in the load carrying capacity of fiber reinforced mortar. In the experiment, #-shape shows high effectiveness because it enhances flexural performance of mortar. Durability against free-thaw repetitions and chloride ion invasion are enhanced by adding the fiber. The experimental results confirmed that recycled nylon fiber has the potential for effectively reinforcing concrete and mortar and would be a possible way to recycle them, which can realize sustainability in the world.
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