Quite some time, because of the development of fiber feeding machine work neglected production in our country, the cellulose fiber, mineral fiber, asbestos fiber,chemical fiber or acrylic fiber , has been packaged into a small package from large packaging, and then manufactured by the way of artificial feeding , so it’s easy to lose feed, more feed or less feed ,there is no guarantee that wet mixing and dry mixing time, influence the stability of mixture gradation.
Wood fiber feeder machine must be familiar to everyone, but the specific introduction is not much to understand, the following are charateristics of road fiber feeder:
Flocculent cellulose fiber is a kind of lignin fiber, the appearance is flocculent or close to powder, the color is white or gray.Flocculent cellulose fiber is a kind of high quality and high purity engineering fiber made of pure flocculent fiber through physical action and unique process. The function of cellulose fiber is mainly forming a layer of asphalt film firmly on the surface layer of asphalt aggregate in asphalt concrete, and it can thicken the film due to the action of lignin fiber, so as to improve the aging resistance of asphalt layer and extend its life.
Flocculent lignin fibers are also referred to as road fibers generally. Flocculent lignin fiber has the following five functions, so that it becomes the choice of material in the paving of the road!
Reinforcement Function — the fiber forms three – dimensional mesh bars in the asphalt mixture.It can resist cracking to a certain extent at low temperature.
Stabilizing effect — the fiber can stabilize the asphalt membrane. At high temperature, the inner space of the fiber absorbs part of the asphalt that is heated and expanded, so as not to become free asphalt, so as to prevent oil flooding and improve the stability at high temperature.
Dispersion function — fiber stabilizer has good dispersion, it can make asphalt, mineral powder and other components in the mixture evenly dispersed. Prevent the formation of micelle – like substances caused by the road surface oil.
Adsorption function — fiber can increase the adhesion between asphalt and mineral powder, greatly improve the viscosity of asphalt , strengthen the bonding capacity between aggregates, and play a role in strengthening asphalt mixture.
Thickening effect – fiber stabilizer can absorb more asphalt in asphalt mixture through the adsorption function of asphalt on the fiber surface.It makes the surface of aggregate form thicker asphalt structure film and improves the durability of the mixture.During production, transportation, and paving, asphalt flows to the bottom of the mixture due to its own gravity. After fiber stabilizer is added in the mixing process, the fiber will firmly hold the asphalt with its unique three-dimensional network structure to prevent the asphalt from dripping and segregation. And the fiber has a very strong stiffening characteristics, can greatly enhance the asphalt mortar,so as to improved the stability greatly at high and low temperature.