沥青

Through the heavy repair practice of pavement on Quzhou section of No.320 State Road,the preparation,mixture design,mixing,transportation,paving,roller process and quality control points of TLA modified asphalt are expatiated on,indicating that TLA modified asphalt has good low-temperature and high-temperature resistance performance.

通过320国道衢州段路面大修的工程实践，阐述TLA改性沥青制备、混合料配合比设计、拌和、运输、摊铺、碾压过程及其质量控制要点，表明TLA改性沥青混合料具有良好的抗低温、高温性能。

The use of petroleum asphalt, especially the road asphalt and its important roles in national economywere introduced.

介绍了石油沥青，特别是道路沥青的用途及在国民经济中的重要地位。

Objective:The purpose of the experiment was to study the carcinogenic and mutagenic effects of petroleum asphalt.

目的：研究石油沥青有无致突变和致癌作用。方法：选用大鼠经口急性毒性试验、Ames试验、小鼠经口微核试验、大鼠气管注入及兔经皮涂抹致癌试验，研究石油氧化及直馏沥青的急性毒性以及致癌和致突变作用。

The modified asphalt is composed of 70-95 percent of petroleum asphalt and 5-30 percent of nonmetal powder of abandoned circuit boards by weight.

改性沥青由重量百分数为70～95％的石油沥青和5～30％的废弃电路板非金属粉组成。

Methods Acute oral toxicity test, subchronic inhalation toxicity test and mutagenicity test were conducted to observe the effects of petroleum asphalt in experimental animals.

方法通过石油沥青急性经口毒性、亚慢性吸入毒性及遗传毒性的实验研究，观察在该实验条件下，石油沥青对受试动物的影响。

Its petroleum asphalt can be burnt to produce coke, which is the fuel source for steelmaking; can be blended with anthracite and liquid asphalt, then used as blast furnace refractory material or as the primary component of electrolyte aluminum anodes, electric steelmaking electrodes, heat exchangers, and for other high temperature resistant uses; and can be used undiluted for paving roads and roofs.

其石油沥青，可以烧死生产焦炭，这是燃料来源，为炼钢；可以结合在一起无烟煤和液态沥青，然后用作高炉耐火材料或作为主要成分的电解质铝阳极，电炉炼钢电极，热交换器，并为其它耐高温用途；可用于纯粹为摊铺路面及屋顶铺平道路。

Used only for China's annual oil bitumen membrane roofing repairs up to 240 million ㎡, petroleum asphalt binder by 27 million tons, repair cost of over 1.2 billion.

我国每年仅用于屋面修缮的石油沥青卷材达2.4亿㎡，石油沥青胶结材达27万吨，修缮费用超过12亿元。

Firstly, the smashed and sorted nonmetal powder of abandoned circuit boards is heated to 80-120 DEG C and dried for 30-60min and then added to liquid petroleum asphalt to be blended uniformly through high speed shearing, thus obtaining the modified asphalt.

先将经过破碎分选的废弃电路板的非金属粉，加热到80-120℃干燥30-60min后加入到加热到液态的石油沥青中，经高速剪切使其共混均匀，即得改性沥青。

In the field, this is normally achieved through the use of self-propelled steel-wheeled or pneumatic-tired rollers, and must be carried out while the asphalt cement is sufficiently fluid that it acts as a lubricant and assists the repositioning of the aggregate particles, if necessary, into a denser will apply to sufficiently well-compacted asphalt concrete mixtures.

在该领域，通常的做法是通过自推进钢轮或者气动轮胎滚轴来完成，并且必须要在沥青奖完全液化，可以做润滑脂和辅助聚合颗粒重定位的时候进行，如果需要的话，要使用致密器来充分压缩沥青混凝土混合物。

Has a large fertile "black earth"(representing the world's "black belt" of the total area of 40%), hold more than 70 kinds of mineral resources, such as bitumen, anthracite, iron, manganese, chromium, titanium, lead, zinc, aluminum, mercury, nickel, and a certain amount of natural gas and oil, which account for bituminous and anthracite reserves of the former Soviet Union for 60% of the total.

拥有大片肥沃的&黑土带&（占全世界&黑土带&总面积的40%），蕴藏着70余种矿藏资源，如沥青、无烟煤、铁、锰、铬、钛、铅、锌、铝、汞、镍和一定量的天然气和石油，其中沥青和无烟煤均占前苏联总储藏量的60%。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。