利用添加剂改性制备高模量沥青的研究

Study on Prepare High Modulus Asphalt Modified by Additive

研究了添加剂LH在不同添加量下对不同油源的沥青及同一油源不同牌号沥青的改性效果。结果表明,LH可有效改善沥青的高温性能,而低温性能则主要取决于基质沥青的低温性能。LH对不同油源的沥青具有不同的改性效果,而相同油源不同牌号的沥青则有着相似的改性特性。利用LH制备的高模量沥青在高低温指标上均明显好于欧盟EN 13924标准的相关要求。

The additive LH with different dosages was applied to investigate the modification effects on the asphalts from different crude oils as well as the asphalts with different grades from the same crude oils. It is found that LH improves the high temperature performance of modified asphalt significantly. However, the low temperature performance of modified asphalt mainly depends on the low temperature performance of base asphalt. LH presents different modification effects for asphalts from different crude oils. Meanwhile, asphalts with different grades from same crude oils show similar modification. The results also indicate that the high modulus asphalt added LH show better performance than EN 13924 requires in terms of high and low temperature indexes.