ABSTRACT
The anti-cracking performance of recycled asphalt base is improved by adding basalt fiber. The dry shrinkage test and temperature shrinkage test of recycled asphalt base with 1%, 2%, 3% and 4% basalt fiber are carried out. The results show that: with the addition of basalt fiber, the drying shrinkage coefficient of recycled asphalt base decreases, and the content increases from 1% to 4%, and the reduction range increases from 10% to 18%. In the first 28 days of curing, the temperature shrinkage coefficient of recycled asphalt base increases with the increase of curing time, and after 28 days, with the hydration reaction becoming stable and forming a certain strength, the temperature shrinkage coefficient tends to be stable. When the temperature is above 0°C, the shrinkage coefficient decreases with the decrease of temperature, while the temperature drops below 0°C, the coefficient of temperature shrinkage increases due to frost heaving.
