SBS改性沥青配伍性试验研究

Experimental Study on the Compatibility of SBS Modified Asphalt

采用燕山石化4303星型SBS改性剂对韩国双龙A-90沥青进行改性，研究不同掺量SBS改性剂与基质沥青的配伍性，以及不同掺量稳定剂和助溶剂对SBS改性沥青性能的影响。试验结果表明：不同掺量的改性剂对基质沥青的改性效果不同，在3．5％-5．5％范固内随着掺量的增加改性效果随之提高；加入稳定剂、助溶剂可有效改善SBS改性剂与沥青之间的相容性；SBS改性剂的最佳掺量为4．7％，助溶剂的最佳掺量为1．7％，稳定剂的最佳掺量为1．4‰。

Yanshan Petrochemical 4303 star shaped SBS was applied in the modification of Korea Shuan- glong A - 90 asphalt, to study on the compatibility between different dosages of SBS modifying agents and base asphalt, and the effects of different dosage stabilizer and cosolvent on SBS modified asphalt performance. The results showed that different dosages of modifying agents had different modifying effects on base asphalt, and within the scope of 3.5% - 5.5% , the modifying effect improved with the increasing of modifying agent. The addition of stabilizer and solvent would effectively improve the compatibility of SBS modifier and asphalt. Besides, the optimum SBS modifier dosage is 4.7% ; the optimum cosolvent dosage is 1.7% ; the optimum mix stabilizer dosage is 1.4‰.