净味剂对SBS改性沥青存储稳定性影响及净味效果评价

Effect of Deodorizer on Storage Stability of SBS Modified Asphalt and Evaluation of Flavor Purification Effect

为研究两种类型净味剂在不同掺量下对不同类型SBS改性沥青长期存储稳定性的影响和净味效果,找出两者间的关联性,对净味SBS改性沥青进行三大指标试验和离析试验,并评价其净味效果。结果表明:净味改性沥青的三大指标均能满足规范要求。两种净味剂均能提高SBS改性沥青的存储稳定性,且粉末净味剂的效果更佳。两种净味剂都能使H_(2)S、NO、CO三种气体的浓度和沥青烟的质量有所降低,但液体净味剂的整体效果更出色。两种净味剂在II型改性沥青中,净味效果优于在I型改性沥青中。在不同的实验条件下,两种净味剂均在相同的掺量下达到最佳效果。故在实际应用中,推荐液体净味剂的掺量为0.005%,粉末净味剂的掺量为0.05%。

To study the effects of two types of deodorizers on the long-term storage stability and deodorization effect of different types of SBS modified asphalt at different dosages,identify the correlation between the two,conduct three major index tests and segregation tests on the deodorized SBS modified asphalt,and evaluate its deodorization effect.The results show that the three major performance indicators of deodorized modified asphalt can meet the regulatory requirements.Both types of deodorizers can improve the storage stability of SBS modified asphalt,and the effect of powder deodorizers is better.Both types of deodorizers can reduce the concentration of H_(2)S,NO,CO gases and the quality of asphalt smoke,but the overall effect of liquid deodorizers is better.The two deodorizers have a better deodorization effect in type II modified asphalt than in type I modified asphalt.Under different experimental conditions,both deodorizers achieved the best results at the same dosage.Therefore,in practical applications,it is recommended to add 0.005%liquid deodorant and 0.05%powder deodorant.