Development of recycled micro PET fiber

在条件恶劣的情况下，采用纤维混凝土对边坡和隧道进行支护。混凝土中的纤维被认为可以提高抗裂性和韧性。纤维的微粉化也可以增加纤维的单位体积的总表面积，并由于尺寸效应而改善纤维的拉伸强度。因此，增加了纤维的增强。在这项研究中，我们研究了由废弃的PET瓶制成的微型PET纤维。通过大量试验，摸索出了超细涤纶纤维混凝土的部分性能。研究发现，聚酯纤维的微粉化对混凝土的加固效果更好。

Fiber reinforced concrete is used for supporting of slope and tunnel when condition is severe. Fibers in concrete are considered to improve crack resistance and toughness. Micronization of fiber increases in total surface area of fiber per unit volume also can be expected and improves tensile strength of fibers due to size effect. As a result, reinforcement by fibers is increased. In this study, we examined micro PET fibers made from waste PET bottles. Through many experiments, ome properties of micro PET fiber reinforced concrete were found out. It is found that micronization of PET fiber is more effective on reinforcing concrete.