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| Viscoelastic prediction model of fiber reinforced asphalt concrete-FRA |
| Received:August 31, 2017 Revised:October 09, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20170831001 |
| KeyWord:fiber reinforced asphalt concrete viscoelastic behaviour three parameter solid model relaxation modulus creep compliance |
| Author | Institution |
| 徐勋倩 |
南通大学 交通学院, 南通 |
| 郭贺贺 |
南通大学 交通学院, 南通 |
| 仇云强 |
南通大学 交通学院, 南通 |
| 沙海洋 |
南通大学 交通学院, 南通 |
| 张振 |
南通大学 交通学院, 南通 |
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| Abstract: |
| The mechanical behavior of fiber reinforced asphalt concrete (FRA) depends on the physical and geometrical characteristics of the asphalt mixture and the fiber.Considering the geometric characteristics of the fiber,a model for predicting the viscoelastic behavior of FRA was constructed through the three parameter solid model.Using this model,the effects of fiber volume integral,specific radius and elastic modulus on FRA relaxation modulus and creep compliance were investigated.The results show that the fiber's content and specific radius have a great influence on the relaxation modulus and creep compliance of FRA while the fiber's elasticity modulus has less affect on them.Through experiments,it was proved that the FRA prediction model has a high precision.Based on the experimental and theoretical study in this paper,the optimum blending ratio and length diameter ratio of polypropylene fiber (PAN) for SMA-13 asphalt concrete are found to be 0.3%~0.4% and 600~900 respectively. |
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