Experimental study on the road performance of high modulus asphalt mixtures with polyolefin additives
WANG Hao
WEI Jincheng
ZHANG Dongxiao
AN Ping
DI Enzhou
Abstract：To analyze the application of high modulus asphalt mixtures in cold regions,polyolefin-based high-modulus agents are separately added to 90# matrix asphalt and Styrene-Butadiene-Styrene(SBS)modified asphalt to prepare high modulus modified asphalt mixtures AC-10-SBS(H),AC-20-90#(H),and AC-20-SBS(H).The impact of adding high modulus agents on the road performance of asphalt mixtures is analyzed.The results indicate that:The addition of high modulus agents can effectively enhance the road performance of AC-20 graded 90# matrix asphalt and SBS modified asphalt mixtures;the low-temperature performance of high modulus 90# matrix asphalt mixtures decreases,while the low-temperature performance of high-modulus SBS modified asphalt mixtures improves and meets regulatory requirements,with optimal values for Hamburg rut depth,dynamic modulus,freeze-thaw strength splitting ratio,and fatigue life.The low-temperature performance,water stability,and fatigue life of AC-10-SBS(H)are superior to those of AC-20-SBS(H),while the high-temperature stability of AC-20-SBS(H)is better than that of AC-10-SBS(H);at a temperature of 15 ℃ and a loading frequency of 10 Hz,the dynamic modulus of AC-20 and AC-10 high modulus modified asphalt mixtures are similar.It is recommended that in cold regions,AC-10 and AC-20 high modulus asphalt mixtures adopt a combination of high-modulus agent and SBS modified asphalt.
Keywords：SBS modified asphalthigh modulus asphalt mixtureroad performance
Publication Date：2025-03-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 86-92,109 )