Reflective cracking is the main problem of the asphalt concrete overlay on a functional airfield cement concrete pavement. It can reduce the serviceability and service life of the airfield pavement. The improvement effect of an epoxy asphalt geogrid stress-absorbing layer on the reflective cracking resistance of the asphalt concrete overlay on the functional airfield cement concrete pavement was studied with numerical analysis and a three-point bending test. The stress-absorbing layer is shown to significantly reduce concentrated stresses of the overlay, and the optimum values of thickness and modulus of the layer are about 0.5 cm and 800 MPa, respectively. Moreover, this layer can increase the bending strength and strain energy density of the airfield pavement structure, and the latter using the new composition with the optimum spraying volume of 2.0 l/m2 grows by 85.4% in comparison with a conventional absorbing layer at 0°C. The new layer greatly improves the reflective cracking resistance of the asphalt concrete overlay and can effectively delay or eliminate the onset and evolution of reflective cracking.

中文翻译：

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改善飞机场沥青路面的反射抗裂性能

反射裂缝是功能性机场水泥混凝土路面上沥青混凝土覆盖层的主要问题。它会降低飞机场路面的使用寿命和使用寿命。通过数值分析和三点弯曲试验研究了环氧沥青土工格栅应力吸收层对功能性飞机场水泥混凝土路面沥青混凝土表层反射抗裂性的改善效果。应力吸收层显示出可显着降低覆盖层的集中应力，并且该层的厚度和模量的最佳值分别约为0.5 cm和800 MPa。此外，该层可以增加飞机场路面结构的抗弯强度和应变能密度，与使用0°C的常规吸收层相​​比，使用新型喷雾剂的最佳喷涂量为2.0 l / m2的后者增长了85.4％。新层大大提高了沥青混凝土外墙的抗反射开裂性能，并可以有效地延迟或消除反射开裂的发生和发展。