新型温拌沥青改性剂的研制和性能研究
发布时间：2018-11-09 20:48
【摘要】：我国高速公路正处在飞速发展的时期，沥青路面起主导作用，而当前国内沥青路面施工主要以热拌沥青混合料HMA(Hot Mixture Asphalt)为主，不仅会产生大量二氧化碳等有害气体，同时也加速沥青老化。为了降低沥青施工对环境的污染，，提出了一种新型节能环保型沥青混合技术即温拌沥青混合技术WMA,WMA就是采用一定的技术措施，在降低沥青粘度的前提下，保证沥青的使用性能不低于HMA的沥青混合料技术。 本文通过调研和分析研究国内外先进的沥青温拌改性剂的基础上，提出一种由SBS、石油树脂、硫化剂为主要成分的实验室自制新型温拌改性剂。通过沥青常规试验和粘度试验探讨了不同掺量不同组分比的新型温拌改性剂对基质沥青的性能影响，利用红外光谱仪分析温拌改性沥青的微观结构，为温拌改性机理提供理论指导。 研究表明：实验室自制温拌改性剂最佳组分配合比:SBS：石油树脂：硫化剂=5：3：3，考虑经济成本及沥青性能因素，当自制温拌改性剂掺量为基质沥青的6%，对沥青性能改善效果最佳。根据粘温曲线可知，温拌改性沥青的最适宜加热温度为150℃。同Sasobit温拌改性剂对比试验得出：自制温拌改性剂在改善沥青高温性能和感温性能方面与Sasobit相当,同时提高沥青低温性能的能力略强于Sasobit。红外光谱分析可知，温拌改性沥青制备过程中不仅仅发生物理反应，同时还伴随着化学反应。
[Abstract]:The highway in our country is in the period of rapid development, the asphalt pavement plays a leading role, but the main construction of domestic asphalt pavement is mainly hot mix asphalt mixture HMA (Hot Mixture Asphalt), which will not only produce a lot of harmful gases such as carbon dioxide. It also accelerates the aging of asphalt. In order to reduce the environmental pollution caused by asphalt construction, a new energy-saving and environment-friendly asphalt mixing technology, WMA,WMA, is put forward, which adopts certain technical measures to reduce the viscosity of asphalt. Asphalt mixture technology to ensure that the performance of asphalt is not lower than that of HMA. Based on the investigation and analysis of the advanced asphalt warm mix modifiers at home and abroad, a new type of warm mix modifier, which is mainly composed of SBS, petroleum resin and curing agent, is proposed in this paper. The influence of the new warm mix modifier with different content and different component ratio on the performance of the base asphalt was studied by routine test and viscosity test. The microstructure of the modified asphalt was analyzed by infrared spectroscopy. It provides theoretical guidance for the mechanism of warm mixing modification. The results show that the optimum composition ratio of the self-made warm modifier in laboratory is: SBS: petroleum resin: curing agent = 5: 3: 3, considering the economic cost and asphalt performance factors, when the self-made temperature modifier is 6% of the base asphalt, The effect of improving asphalt performance is the best. According to the viscosity temperature curve, the optimum heating temperature of the modified asphalt is 150 鈩
本文编号：2321519
[Abstract]:The highway in our country is in the period of rapid development, the asphalt pavement plays a leading role, but the main construction of domestic asphalt pavement is mainly hot mix asphalt mixture HMA (Hot Mixture Asphalt), which will not only produce a lot of harmful gases such as carbon dioxide. It also accelerates the aging of asphalt. In order to reduce the environmental pollution caused by asphalt construction, a new energy-saving and environment-friendly asphalt mixing technology, WMA,WMA, is put forward, which adopts certain technical measures to reduce the viscosity of asphalt. Asphalt mixture technology to ensure that the performance of asphalt is not lower than that of HMA. Based on the investigation and analysis of the advanced asphalt warm mix modifiers at home and abroad, a new type of warm mix modifier, which is mainly composed of SBS, petroleum resin and curing agent, is proposed in this paper. The influence of the new warm mix modifier with different content and different component ratio on the performance of the base asphalt was studied by routine test and viscosity test. The microstructure of the modified asphalt was analyzed by infrared spectroscopy. It provides theoretical guidance for the mechanism of warm mixing modification. The results show that the optimum composition ratio of the self-made warm modifier in laboratory is: SBS: petroleum resin: curing agent = 5: 3: 3, considering the economic cost and asphalt performance factors, when the self-made temperature modifier is 6% of the base asphalt, The effect of improving asphalt performance is the best. According to the viscosity temperature curve, the optimum heating temperature of the modified asphalt is 150 鈩
本文编号：2321519
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