Cellulose fiber is a kind of organic floc fiber material produced by chemical treatment and mechanical process of natural renewable wood. It is widely used in concrete mortar, gypsum products, wood pulp sponge, asphalt road and other fields to prevent coating cracking, improve water retention the stability of production and construction of the suitability, increase strength, enhance the surface adhesion. Its technical functions are mainly thixotropic, protection, absorption, carrier and filler.
Due to the capillary action of the fiber structure, the water in the system is rapidly transferred to the surface and interface of the slurry, so that the water in the slurry is evenly distributed and the crust phenomenon is obviously reduced. The bond strength and surface strength are improved obviously. This mechanism also plays an important role in cracking resistance due to the decrease of tension during drying. The dimensional stability and thermal stability of wood fiber play a good role in heat preservation and crack resistance.