厂拌热再生沥青混合料路用性能试验研究

Experimental Research on Road Performance of Plant-mix Hot Recycled Asphalt Mixture

通过车辙试验、真空饱水马歇尔试验、冻融劈裂试验和低温弯曲破坏试验对AC-16型厂拌热再生沥青混合料(PHRAM)的路用性能进行评价,并在较高沥青混合料回收料(RAP)掺量的条件下掺入再生剂进行对比研究。结果表明:PHRAM的高温性能与RAP掺量成正相关,而其水稳定性能和低温性能与RAP掺量成负相关;再生剂的掺入能够有效改善较高RAP掺量下PHRAM的水稳定性能和低温性能。

Evaluate the road performance of AC-16 plant-mixed hot recycled asphalt mixture(PHRAM)through rutting test,vacuum saturated Marshall test,freeze-thaw splitting test and low-temperature bending failure test,and under the condition of higher asphalt mixture reclaimed material(RAP)content,mixed with regenerating agent for comparative study.The results show that the high temperature performance of PHRAM is positively correlated with RAP content,while its water stability and low temperature performance are negatively correlated with RAP content;The incorporation of regenerant can effectively improve the water stability and low temperature performance of PHRAM at higher RAP content.