石油沥青

In this study, two types of imported bitumens are selected and foam ability tests are carried out under different conditions. The testing results show that water content significantly affects the decay curve, and the occurring time of the maximum expansion ratio will advance with increase of the temperature.

采用两种不同标号的进口重交通石油沥青，在各种条件下进行了发泡性能试验；对试验结果的分析和比较发现：加水量对衰退曲线影响显著，最大膨胀比出现的时间随温度的升高而提前。

The effect of coconut amine on the viscosity and stability of residue asphaltene system was studied and the change in viscosity and colloid stability with coconut amine content was discussed briefly.

考察了表面活性剂椰子胺对石油沥青质体系粘度和胶体稳定性的影响，初步探讨了粘度和胶体稳定性随椰子胺质量分数变化的原因。

The results of will be helpful to the further study on the soil corrosivity ofpetroleum asphalt coated pipe

这对石油沥青涂层管线土壤腐蚀性的深进研究，有一定的参考价值

The thionine was successfully modified on pretreated PPCF microelectrode by electrochemical polymerization.

通过电聚合方法在石油沥青基碳纤维微电极表面修饰硫堇，获得了理想的修饰层。

Increasing wearing resistance and durability of asphaltic concrete pavement ,reducing temperature suspectibility of asphalt were shown in several previous investigations.

以前的若干调查研究曾表明，使用炭黑添料能增加路面的耐磨性和耐久性、降低石油沥青的温度感应性等等。

Petroleum asphalt ; Toxicity ; Experimental study ; Mutagenicity

石油沥青；毒性；实验研究；致突变性

The preparation process and product properties of a new kind of one-component moisture curing petroleum asphalt polyurethane waterproof coatings were introduced.

介绍了一种新型湿固化单组分石油沥青聚氨酯防水涂料的制备工艺和产品性能，并且对工艺配方中原料选择和影响因素进行了讨论。

The authors have made a microelectrode with the material of petroleum asphalt fiber.

屠一锋，徐萍，超大比表面石油沥青基碳纤维微电极研究

Petroleum asphalt ; Bap concentration ; acute toxicity ; Ames test ; micronuleus test ; carcinogenic test

石油沥青； Bap含量；急性毒性； Ames试验；微核试验；致癌试验

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。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。