纤维沥青混凝土蠕变性能试验研究  

Experiment Research on the Creep Performance of Fiber Reinforced Asphalt Concrete

作　　者：陈丽芳 张森 黄春水 CHEN Lifang;ZHANG Sen;HUANG Chunshui(College of Civil Engineering, Xuchang University,Xuchang Henan 461000;Henan Province Highway Engineering Bureau Group Co. , Ltd.,Zhengzhou Henan 450052)

机构地区：[1]许昌学院土木工程学院,河南许昌461000 [2]河南省公路工程局集团有限公司,河南郑州450052

出　　处：《河南科技》2018年第8期102-107,共6页Henan Science and Technology

基　　金：河南省教育厅科研项目(16B580003);许昌学院横向科研项目(2017HX029)

摘　　要：通过不同纤维体积率和长径比的纤维沥青混凝土的弯曲蠕变试验,研究纤维体积率和长径比对混凝土蠕变变形、蠕变速率、蠕变柔量和卸载瞬时回弹模量的影响,建立了纤维沥青混凝土蠕变速率、蠕变柔量和卸载瞬时回弹模量的计算模型。试验研究和理论分析表明:纤维含量特征参数能综合反映纤维体积率和长径比对沥青混凝土蠕变速率、蠕变柔量和卸载瞬时回弹模量的影响。在本文试验范围内,纤维沥青混凝土最佳纤维体积率为0.35%,长径比为324,纤维含量特征参数为1.13。Based on the flexural creep test of fiber asphalt concrete with different fiber volume fractions and aspect ra.tios, the influence of fiber volume fraction and aspect ratio on the creep deformation, creep rate, creep compliance and unloading momentary modulus of resilience of asphalt concrete was studied, calculation models for the creep rate, creep compliance and unloading momentary modulus of resilience were established. The experimental study and theoretical analysis show that, the fiber content characteristic parameter can reflect comprehensively the influence of the fiber volume ratio and fiber aspect ratio on the creep rate, creep compliance and unloading momentary modulus of resilience of asphalt concrete; within the scope of the test in this article, the optimum fiber volume ratio, fiber aspect ratio and fiber content characteristic parameter are 0.35%, 324 and 1.13 respectively.

关 键 词：纤维沥青混凝土 黏弹性能 蠕变试验 纤维含量特征参数 

分 类 号：U416.217[交通运输工程—道路与铁道工程]