Why add wood fiber in mortar

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Due to the capillary action of the fiber structure, the moisture inside the system is quickly transmitted to the surface and interface of the slurry, so that the uniform distribution of moisture inside the slurry significantly reduces the crust phenomenon. And the bonding strength and surface strength are obviously improved, and this mechanism also plays a role in cracking resistance due to the reduction of tension in the drying process. The dimensional stability and thermal stability of wood fiber have played a good role in thermal insulation and anti-cracking in thermal insulation materials. Lignocellulose is insoluble in water, weak acid and alkaline solution; pH value is neutral, which can improve the corrosion resistance of the system.
Lignocellulose has small specific gravity, large specific surface area, excellent heat preservation, heat insulation, sound insulation, insulation and air permeability, uniform thermal expansion without cracking of the shell; higher wet film strength and covering effect. Lignocellulose has excellent flexibility and dispersibility. After mixing, it forms a three-dimensional network structure, which enhances the supporting force and durability of the system, and can improve the stability, strength, compactness and uniformity of the system.
The structural viscosity of the wood fiber makes the uniformity of the processed prefabricated slurry (dry and wet material) stable and reduces the shrinkage and expansion of the system, which greatly improves the accuracy of the construction or prefabricated parts. Wood fiber has a strong antifreeze and heat resistance, when the temperature reaches 150 ℃ can be insulated for several days; when up to 200 ℃ can be insulated for tens of hours; when more than 220 ℃ can also be insulated for several hours.
Wood fiber used in wall mortar surface
1. Fiber plastering mortar is applied to the wall surface layer, which can effectively prevent the occurrence of wall cracking and achieve the effect of anti-cracking and anti-seepage.
2, fiber mortar surface layer has good construction finishing operation characteristics. It has no effect on the appearance of mortar surface layer.
Fiber can make up for the technical defects of new lightweight wall materials to the greatest extent. All kinds of lightweight energy-saving wall materials have different degrees of surface cracking and insufficient impermeability defects, affecting its popularization and application, in the use of these wall materials at the same time, supporting the use of companion fiber mortar as a plastering surface, can fully make up for its performance defects, is conducive to improving the quality of the project.
Wood fiber used in gypsum-based plasters and gypsum products
1, improve the uniformity, making it easier to apply mortar, while improving the ability to resist vertical flow. Enhance fluidity and pumpability, thereby improving work efficiency.
2. High water retention, prolonging the workable time of the mortar, and forming high mechanical strength during setting.
Wood fiber used in insulation mortar base
1, fiber mortar mortar grass-roots scraping greasy batch swing layer is firm, beautiful and smooth, suitable for all kinds of architectural coatings. All kinds of exterior wall coatings are widely used in the schedule, the construction mortar put forward higher requirements, fiber mortar because of good crack resistance, impact resistance and frost resistance, can be the right to improve its engineering characteristics, to meet the requirements of the construction process and fundamentally ensure the quality of construction.
2, improve the efficiency of plastering construction to reduce losses. Fiber mortar because of its adhesion, stability is better than the net cement mortar, plastering construction on the ash easy and slow mortar drop significantly reduced, can improve the efficiency of plastering to reduce the loss of materials.
3, is conducive to ensure the construction quality of decorative brick surface. The use of fiber mortar as the base, due to the reduction or basic disappearance of its cracking phenomenon, plays an extremely important role in ensuring the strength of the facing brick sticking and preventing the occurrence of brick joint cracking and hollowing.

Key words:

Wood fiber