Study on the effect of basalt fiber on the low temperature cracking resistance of asphalt mixture
DONG Yuming
TIAN Xiaoli
XING Peng
Abstract：In this study,the enhancement effect and mechanism of basalt fiber dosage on the low temperature cracking resistance of 90#road asphalt mixture,SBS modified asphalt mixture and rubber powder modified asphalt mixture under the condition of 0,-10 and-20℃using the semi-circular bending test method.The results indicate that the optimal content of basalt fiber is 0.30%.At this content,compared to those without basalt fiber,the ultimate tensile stress of 90#asphalt mixture,SBS modified asphalt mixture,and rubber powder modified asphalt mixture under-20℃low temperature conditions increased by 11.45%,9.17%,and 12.92%respectively,the fracture toughness increased by 17.85%,10.75%,and 19.23%respectively,the fracture energy increased by 33.28%,57.53%,and 55.97%respectively.When the temperature decreases from 0 to-20℃,the fracture energy attenuation rate of the crumb rubber-modified asphalt mixture is reduced by 21.61%relative to the control mixture without fiber reinforcement.
Keywords：AC-13 asphalt mixturebasalt fiberSCB testlow temperature crack resistance
Publication Date：2026-01-25
Online Publishing Date：2026-03-17(First online date of this platform, not the publication date of the document)
Pages：5( 135-139 )