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首页> 外文期刊>Advances in materials science and engineering >Effects of Paving Technology, Pavement Materials, and Structures on the Fatigue Property of Double-Layer Pavements
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Effects of Paving Technology, Pavement Materials, and Structures on the Fatigue Property of Double-Layer Pavements

机译：铺路技术，路面材料和结构对双层路面疲劳性能的影响

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Double-layer paving technology, which is a new technology for construction asphalt pavements, has received increasing research attention for several years. However, few studies have focused on the effect of asphalt pavement layer thickness and mixture-type combinations on the fatigue properties of a double-layer pavement. Therefore, the fatigue properties of the double-layer and traditionally paved asphalt pavements were studied in this work. The effects of two paving technologies, three mixture combinations, and two asphalt layer thickness combinations on the fatigue properties of asphalt pavements were studied through bending beam tests, and a fatigue equation of different asphalt pavements was established using the two-parameter Weibull distribution. Subsequently, the fatigue lives of different pavements were compared and analyzed under the same cyclic load. Results indicate that the flexural strength and fatigue life of the double-layer pavement increased by at least 10% and 54%, respectively, compared with those of a traditionally paved pavement structure. The goodness of fit of the equation established using the Weibull distribution exceeded 0.90. For the traditional paving technology, compared with the pavement structure combination of 4-cm AC-13 surface layer/6-cm AC-20 bottom layer, the fatigue life of a 3-cm AC-13 surface layer/7-cm AC-20 bottom layer can be increased by at least 8%, while the fatigue lives of other pavement structures are reduced significantly. The results also indicate that the fatigue life of the double-layer pavement structure with the 3-cm AC-13 surface layer/7-cm AC-20 bottom layer can be increased by at least 114% compared with that of the traditionally paved pavement structure (4-cm AC-13 surface layer/6-cm AC-20 bottom layer). Additionally, the fatigue lives of other pavement structures can be improved. To effectively improve the fatigue life of an asphalt pavement, a double-layer pavement structure with the 3-cm AC-13 surface layer/7-cm AC-20 bottom layer combination is recommended.
机译：双层铺路技术，是建筑沥青路面的新技术，已收到几年的研究人员。然而，很少有研究专注于沥青路面层厚度和混合物型组合对双层路面的疲劳性能的影响。因此，在这项工作中研究了双层和传统铺设沥青路面的疲劳性能。通过弯曲梁试验研究了两种铺路技术，三种混合物组合和两种沥青层厚度组合对沥青路面疲劳性能的影响，并使用双参数Weibull分布建立了不同沥青路面的疲劳方程。随后，比较不同路面的疲劳寿命并在相同的循环载荷下分析。结果表明，与传统铺设的路面结构相比，双层路面的弯曲强度和疲劳寿命分别增加了至少10％和54％。使用Weibull分配建立的等式的适合度超过0.90。对于传统的铺路技术，与4cm-13表面层/ 6厘米Ac-20底层的路面结构组合相比，3cm-13表面层/ 7厘米的疲劳寿命/ 7厘米20个底层可以增加至少8％，而其他路面结构的疲劳寿命显着降低。结果还表明，与传统铺设的路面相比，通过3cm-13表面层/ 7-cm Ac-20底层的双层路面结构的疲劳寿命可以增加至少114％结构（4厘米AC-13表面层/ 6厘米AC-20底层）。另外，可以提高其他路面结构的疲劳寿命。为了有效地改善沥青路面的疲劳寿命，建议使用具有3cm-13表面层/ 7-cm AC-20底层组合的双层路面结构。

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