基于不同纤维改性的 OGFC-13 沥青混合料路用性能研究
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陈良锐(1992—),男,工程师,从事道路交通设计工作。

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U414

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Research on road performance of OGFC-13 asphalt mixture based on different fiber modifications
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    摘要:

    纤维改性剂所纤维的改性作用改善沥青基上材料的路用性能。为探究 OGFC-13 沥青混合料在各类纤维不同体积掺量条件下的路用性能表现,本文特制备聚丙烯腈纤维、聚酯纤维、木质素纤维、玄武岩纤维 4 种纤维掺拌到的沥青混合料进行路用性能试验。研究结果表明:1) OGFC-13 沥青混合料随纤维掺量的增加,其动稳定度不断增长,当各种纤维掺量超过 0.3% 时,动稳定度呈下降趋势;2) 当纤维体积掺量为 0.3% 时,玄武岩纤维的沥青混合料动稳定度为 3 252 次/mm,高温抗车辙性能最佳;3) 当聚酯纤维与玄武岩纤维掺量为 0.2% 时,沥青混合料低温最大弯拉应变达到 1.8 254,其聚酯纤维在沥青路面低温抗裂性能试验温度下的作用还不及稳定;4) 渗水:纤维材料向 OGFC-13 沥青混合料排水性能呈下降趋势,尤其是木炭纤维对渗透系数的影响最大,当掺量至 0.2% 时,渗水系数由 1 154 mL/a 陡降至 635 mL/a,降幅达到 44.97%;5) 综合来看,玄武岩纤维在 OGFC-13 沥青混合料中的改性效果最佳,且其掺量体积分数应控制在 0.3% 以内。本文成果可为宜林沥青摊铺罩面层的工程应用提供一点借鉴。

    Abstract:

    Through the fiber modification of fiber asphalt, the road performance of concrete materials can be improved. In order to explore the road performance of OGFC-13 asphalt mixture under different volume ratios of various fibers, 4 kinds of asphalt mixtures as polyacrylonitrile fiber, polyester fiber, lignin fiber and basalt fiber are specially prepared for road performance test. The results show that: 1) The dynamic stability of OGFC-13 asphalt mixture increases with the increase of fiber contents, and when the fiber contents of various fibers exceed 0.3%, the dynamic stability shows a downward trend; 2) When the fiber volume content is 0.3%, the dynamic stability of the asphalt mixture containing basalt fiber is 3 252 times/mm, and the high temperature stability is the best; 3) When the content of polyester fiber and basalt fiber is 0.2%, the maximum tensile strain of asphalt mixture at low temperature is the same, which is 2 834, but the role of polyester fiber in the low temperature crack resistance of asphalt asphalt mixture is unstable; 4) The drainage performance of OGFC-13 asphalt mixture mixed with fiber material shows a downward trend, especially the wood fiber has the greatest influence on the permeability coefficient, when the content is 0.2%, the water permeability coefficient drops sharply from 1 154 mL/a to 635 mL/s, a decrease of 44.97%; 5) On the whole, the modification effect of basalt fiber in OGFC-13 asphalt mixture is the best, but its content volume fraction should be controlled within 0.3%. The results can provide a certain reference for the engineering application of warm mix asphalt with this layer covering.

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陈良锐,尹晓桐.基于不同纤维改性的 OGFC-13 沥青混合料路用性能研究[J].工程建设,2024,(1):57-61

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  • 在线发布日期: 2026-07-30
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