采用沥青薄膜加热试验和紫外线老化试验，对沥青的针入度、软化点、延度和粘度等性能指标进行了试验研究。
By thin film oven test and ultraviolet photooxidation test, asphalt performance indices were studied, including penetration, softening point, ductility and viscosity.
试验结果表明，在一定的工艺条件下，通过对基片的加热控制可以获得单一方向生长的柱状晶结构薄膜。
Under the given conditions, we can get films of columnar crystals of growth of single direction by controlled heating of substrate.
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