Is the Basalt fiber instead of lignin fiber in the SMA asphalt mixture?
The combination of these two factors in the United States many states with basalt fiber more. But I personally feel that unless the same road to do two test sections to contrast, or light analysis of these mechanisms Han, and said clearly. Mineral fibers do not have as much bit as lignin fibers absorb asphalt, but the asphalt content is reduced too much and how effective it is.
There are views that mineral fiber and aggregate (fiber is mainly basalt to do) belong to the same material, anti-aging, in particular, is conducive to the recycling of asphalt mixture. And lignin fibers are likely to be used in the process of aging, and in the regeneration process of burning into dust.
I used to think that the lignin fiber itself has the role of absorption of asphalt, need to add 0.4% to 0.7% of the US fiber fiber production company that the lignin fiber itself has the role of absorption of asphalt, Asphalt, usually more than 0.5% of the mineral fiber asphalt, these asphalt absorbed in the lignin hollow tube, and was sucked into the fiber within the asphalt does not increase the thickness of the asphalt film, nor improve the strength of the road, on the contrary asphalt Increasing the amount and increasing the cost, so the advantage of absorbing asphalt is also a disadvantage.
