矿物纤维沥青混合料中纤维最佳掺量的试验研究

发布时间：2018-11-16 07:07

【摘要】：纤维沥青混合料中纤维的最佳用量是由纤维吸附沥青的能力、矿质混合料的级配类型以及纤维的分散性的强弱等因素共同决定的。在实际工程中,掺加纤维的混合料类型多为骨架-密实型,如SMA。以骨架-密实型沥青混合料为主要研究对象,按照矿物纤维掺量0%、0.3%、0.5%、0.7%和0.9%为试验前提,选用玄武岩矿物纤维,通过高温车辙试验和低温小梁弯曲试验,对比不同沥青条件下矿物纤维沥青混合料的高温稳定性、低温抗裂性等,确定矿物纤维的最佳掺量,从而改善沥青混合料的路用性能。
[Abstract]:The optimum amount of fiber in fiber asphalt mixture is determined by the ability of fiber to adsorb asphalt, the gradation type of mineral mixture and the dispersion of fiber. In practical engineering, the type of mixture mixed with fiber is mostly skeleton-dense type, such as SMA. Taking the skeleton dense asphalt mixture as the main research object, according to the content of mineral fiber 0 / 0. 3 and 0. 5% and 0. 9% respectively, the basalt mineral fiber is selected. Through high temperature rutting test and low temperature trabecular bending test, the paper compares the high temperature stability and low temperature crack resistance of mineral fiber asphalt mixture under different asphalt conditions, and determines the optimum content of mineral fiber, thus improving the pavement performance of asphalt mixture.
【作者单位】：长春建筑学院;吉林大学交通学院;
【基金】：吉林省教育厅“十二五”科学技术研究项目(吉教科合字2012第550号)资助
【分类号】：U414

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