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通过试验分析不同比例的再生剂和温拌剂对于温拌再生沥青的共同作用,对含有100%人工老化沥青的温拌再生沥青的性能与化学特性进行了分析评价.选用3种温拌添加剂与1种商业再生剂GST来再生人工的老化沥青.再生结合料的性能试验包括针入度、软化点以及旋转黏度试验,傅里叶红外光谱试验则用来探讨再生结合料的化学特性.性能试验结果表明,再生剂GST具有再生人工老化沥青的能力;由于再生剂与温拌添加剂的共同作用对于100%老化沥青的再生性能有很大的影响,因此选择两者的合适用量是再生100%老化沥青的关键.红外光谱试验结果表明,再生主要是一种调节化学组分的过程,而且随着温拌添加剂的加入,温拌再生沥青的红外谱图在化学官能图方面并没有发生明显的变化.
The effects of different proportions of regenerant and warm mix agent on warm mixed recycled asphalt were analyzed through experiments, and the properties and chemical properties of warm mixed recycled asphalt with 100% artificial asphalt were analyzed and evaluated.Three kinds of warm mix additive and A kind of commercial regenerant GST to regenerate the artificial aging asphalt.Reinforced binder performance tests include penetration test, softening point and rotational viscosity test, and Fourier transform infrared spectroscopy test is used to explore the chemical properties of recycled binder. The results show that regenerant GST has the ability to regenerate artificially aged bitumen. Since the synergistic effect of regenerant and warm-mix additive has a great influence on the regeneration performance of 100% aged bitumen, the suitable dosage of both is 100% The key of asphalt is that the infrared spectrum test results show that regeneration is mainly a process of adjusting chemical components, and with the addition of warm mix additives, infrared spectrum of warm mix asphalt does not change significantly in the chemical functional chart .