| 1. | Road asphalt road surface water damage formation and preventing and controlling countermeasure
公路沥青路面水损坏的形成及防治对策 |
| 2. | The fabrication of modified road asphalt by extracting paraffin from liaohe crude oil vacuumized residue
辽河原油的减压渣油深拔蜡并改性制取道路沥青 |
| 3. | The cost of the modified asphalt decrease if the road asphalt will be modified with betonite and org anic betonite
，泪膨润土、有机膨润土复配改性沥青，可以降低其成本。 |
| 4. | The cost of the modified asphalt decrease if the road asphalt will be modified with microwave irradiation waste rubber powder
用微波复照废旧橡胶粉改性沥青，可以降低其成本。 |
| 5. | Abstract : by analyzing the characteristics of imported crude oils , and carrying the experiments , the basic idea and method of preparing road asphalt from these crude oils are presented
文摘:简要分析了进口油沥青原料的特点，并通过具体的研究实验阐述了进口油石油沥青开发的基本思路与方法。 |
| 6. | 4 the road asphalt was modified with powder sbr and betonite which reserves abundantly and cheap and organic betonite which was industrialization production firstly . the result show : softening point distinctly increased and penetration decreased
4 、首次用富产价廉的膨润土和已经工业化生产的有机膨润土分别复配粉末sbr对道路沥青进行改性。 |
| 7. | Literatures on the topic of used rubber modified road asphalt were overviewed . by using the used rubber powder , the problem of temperature sensitivity if road asphalt could be resolved . a large number of experiments were conducted on the topic of rubber modified asphalt and the aging properties
本论文用废轮胎胶粉对道路沥青材料进行改性进行了文献综述,利用胶粉作为改性剂,以解决我国道路沥青温度敏感性大的问题,进行了橡胶粉改性沥青性能试验、改性沥青老化后性能等大量试验。 |
| 8. | Abstract : through deep vacuum distillation , the 90 high grade road asphalt meeting the standard of sinopec and the esso standard and the 70 high grade road asphalt meeting the standard of the ministry of communications and the national standard were directly produced with high gum and high asphalt saudi arab middle crude
文摘:大连西太平洋石油化工有限公司采用减压深拔技术，加工胶质、沥青质含量高的沙特阿拉伯中质原油，直接生产出符合中石化标准及埃索标准的90号等级道路沥青及符合交通部标准、国家标准的70号高等级道路沥青产品，为今后生产高等级道路沥青积累了有益的经验。 |
| 9. | And reached the following specific conclusions : rubber content with the increase of resistance to ageing rubber modified asphalt increased ageing after less than for low - temperature service , the quality of reduced losses , soften point increase needle into a normal degree . summed up the aging asphalt and modified asphalt laws made spent rubber for asphalt modified agents , the principles of the size options and dosage of rubber powder for spent rubber modified asphalt road asphalt in the application provided a good technical support
得出了随胶粉含量的增加胶粉改性沥青的抗老化性能提高,老化后低温延度比减小、质量损失量减小、软化点提高,针入度呈正态分布及改性沥青老化的规律,提出了废胶粉用作沥青改性剂时粒径选择和掺量确定的原则,为废胶粉改性沥青在公路沥青路面中的应用提供了良好的技术支持。 |
| 10. | In accordance to the defects presented in using the chinese road asphalt technical standards to assess the asphalt performance as well as the facts that the shrp test equipment of usa can not be widely employed in china since its being very expensive , the shrp rheological concept is utilized in the research project to carry out the exploration of the rheological properties of modified and non - modified asphalt by using conventional tests such as penetration and ductility . the conclusions obtained by using the conventional test rheological index to assess asphalt performance are compared with those by using the shrp rheological index and their certain correlation are found
针对目前我国道路石油沥青技术标准评价沥青路用性能存在的种种缺陷，以及美国shrp试验设备因其昂贵性而暂时无法在国内大量推广应用这一事实，本课题试图利用shrp流变思想，采用针入度、延度等常规试验设备进行改性及非改性沥青流变特性的研究，并将常规试验流变指标评价沥青路用性能的结论与shrp流变指标评价结论作比较，找出它们之间的相关关系，从而肯定了采用常规试验设备进行沥青流变特性及路用性能研究的有效性。 |
