沥青，人造沥青：某种厚厚的、黑而粘的物质，由炭焦、木焦或石油的剩余物中提炼出来，用于防水、盖屋顶、填缝和铺路。
Any of various thick, dark, sticky substances obtained from the distillation residue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving.
改性沥青桥梁伸缩缝在寒区应用时，由于低温作用普遍开裂，而且填缝料和梁端连接处普遍存在界面裂缝。
Most modified asphalt bridge expansion joints fend to have existed cracks because of low temperature, when they applied in cold area.
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