指物料经使用或储存过久，已经失去原有的性能或色泽，而导致物料价值减少者。
公路路面废旧料循环利用率达到40%。
The recycling rate of road-surface materials reached 40 percent.
可加装自动比例新旧料混合，并配合吸料机运作，达到自动化生产立即回收效果。
Can be equipped with automatic proportion and mixing, and together with the material sucking machine, automated production to achieve the effect of immediate recycling.
针对西阎高速、西潼高速和西户高速公路沥青路面铣刨旧料，进行泡沫沥青厂拌冷再生的研究。
The study on plant-mixed cold recycling technology for foamed asphalt is carried on based on the milled waste material of Xiyan Expressway, Xitong Expressway as well as Xihu Expressway.
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