It is pointed that with rock asphalt content increasing,its effectives wears off.When content increases from 20% to 25%,performance of mixture has little change.

• 研究认为,随着岩沥青掺量的增加,其对混合料路用性能的影响逐渐减弱,当掺量由20%25增加到25%25时,性能变化很小。