沥青

The low temperature properties of the binders were greatly improved, the dynamic mechanical properties of SBR-modified asphalts before and after oxidation or sulfurization were characterized at -30~100℃ by using dynamic shear rheometry. The results show that the addition of SBR1500 increased the binder elasticity at low temperature.

结果表明，加入粉末SBR1500后改性沥青材料薄膜前后的延度和流变性能都有明显的改进，而硫化共混改性可显著提高低温下改性沥青的粘弹性能。

We can see copper-bearing asphalt amygdaloidales in the basalt lava and stockwork of native copper in the carbon-rich tuff. There area so much carbon in the ores that people only can see the native copper aggregate after splitting and polishing the ores.

最近，在该熔岩层上下的凝灰岩中鉴别出难识别矿化类型，即与沥青和有机质碳紧密伴生的富铜矿石，甚至在气孔状熔岩中发现呈杏仁体含铜沥青，因而可能构成大规模矿化。

Polymer modified asphalts were prepared with SBR, XSBR, SBS under oxidation or sulfurization conditions using a special mixing technique.

在基质沥青中加入一定量的SBR、XSBR、SBS，观察对沥青材料常规性能以及－30~100℃下动态力学流变性能的影响。

Results According to the information at home and abroad and the research and the study result of toxicologic experiments,hygienic standard was drawn.

石油沥青是石油原油分馏后剩余的副产品，随着石油产量的增加，沥青的产量也随之增加。

In practice, asphalt concretes are compacted to a certain percentage (typically greater than 90%) of their theoretical maximum density,(i.e., the density of a voidless mixture of the asphalt cement and aggregate).

尤其是沥青混凝土要压至他们理论最大密度的特定的百分率（比如90％以上），例如，沥青胶泥和聚合物的有效混合物密度？

According to asphalt mixtures strength theory, analyse the microscopic mechanisation of flyash in the asphalt mixture.

根据沥青混合料的强度理论，分析了粉煤灰对沥青混合料稳定性影响的微观机理。

The admixing technology aging mechanism and the influence of rubber powder on the performance of asphalt were studied.

研究了胶粉和沥青的掺配工艺，分析了废橡胶粉改性沥青的老化机理。

Through the contrast analysis,the optimization combination of asphalted pavement with semi-rigid base has been examined which is more suitable for heavy-haul transportation,to effectively exert the application character of "a strong base and a thin facing" and make the asphalt pavement adapt to the heavy load.

主要分析了柔性基层与半刚性基层沥青路面在重载条件下适应性的优缺点，通过分析比较，得出柔性基层与半刚性基层沥青路面的优化组合更适应重载，以有效发挥强基薄面的应用特点，从而使沥青路面能更好的适应重载。

The hard asphalts after SDADM may be modified by using allocation.

经过溶剂脱沥青后的沥青进行调和改质。

Both Na-MMT and OMMT can be able to increase the softening point and viscosity of asphalts, but OMMT had a better modification effect.

Na-MMT和OMMT均可增大沥青的软化点和粘度，明显提高沥青的耐高温性能，但OMMT改善效果更为显著。

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。