Features: High strength, high modulus, low extensibility, good anti-fatigue and anti-tearing performance. resistant to high-temperature track, delaying and decreasing crack reflection.

特点：高强度、模量，低延伸率、疲劳开裂，耐高温车辙，延缓减少反射裂缝。

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The equations of caustic curve and its initial curve for a crack illuminated by an oblique incident light beam in reflection arrangement were deduced using the space analytic geometry method.

本文用空间解析几何方法，推导了在一般非平行斜入射光条件下，裂纹体表面所形成的反射焦散线和初始曲线的方程。

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The reflection crack of the old road surface to the asphalt is one of the main reason for the road diseases under the traffic load.

在交通荷载的作用下，旧路面对沥青加铺层形成的反射裂缝是造成沥青路面病害的主要原因之一。

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