Comparison between fatigue performance of horizontal cores from different asphalt pavement depths and laboratory specimens
Comparison between fatigue performance of horizontal cores from different asphalt pavement depths and laboratory specimens
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不同沥青路面深度水平芯材与实验室试件疲劳性能比较
DOI：
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发表时间：
2012
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影响因子：
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通讯作者：
A. Abbas
中科院分区：
文献类型：
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作者：
Raouf Mbarki;M. Kutay;N. Gibson;A. Abbas
本研究比较了从不同岩层(顶层和底层)获得的野外岩心和实验室生产的实验室压实试件的疲劳性能。现场岩心来自位于美国弗吉尼亚州麦克莱恩的特纳-费尔班克公路研究中心(TFHRC)的加速路面测试(APT)设施。对100 mm厚沥青路面顶层50 mm和底层50 mm的试件进行了单轴推拉(压-拉)疲劳试验。样品是通过水平取芯从六个APT巷道提取的板条获得的。将现场岩心的损伤特征曲线(即粘弹性连续损伤理论的C-S曲线)和疲劳寿命与室内试件进行了比较。试验测试结果和随后的分析结果显示，顶部和底部现场试件的损伤特征曲线和疲劳寿命是相似的，而现场和实验室试件的损伤特征曲线和疲劳寿命是不同的。
This study presents a comparison between the fatigue performance of field cores obtained from different layers (top and bottom) and laboratory produced–laboratory compacted specimens. The field cores were obtained from the Accelerated Pavement Testing (APT) facility at Turner-Fairbank Highway Research Center (TFHRC), located in McLean, Virginia, USA. Uniaxial push-pull (compression-tension) fatigue tests were conducted on samples obtained from the top 50 mm and the bottom 50 mm layers of 100 mm thick asphalt pavements. The samples were obtained by horizontally coring slabs extracted from six APT lanes. The damage characteristic curves (i.e., C versus S curve of the viscoelastic continuum damage (VECD) theory) and the fatigue lives of the field cores were compared with those of the laboratory specimens. The experimental test results and the subsequent analysis findings revealed comparable damage characteristic curves and fatigue lives for the top and bottom field specimens; meanwhile, the field and laboratory specimens exhibited different damage characteristic curves and fatigue lives.