The technical properties of the mortar fiber: the workability of the mortar fiber refers to whether the mortar fiber easily spreads into a symmetrical and continuous thin layer on the outside of masonry, etc., and is close to the base layer; it includes both water retention and mobility Send justice.

Water retention refers to the ability of mortar fibers to connect water. For the mortar with poor water retention, bleeding appears along the side during the application process, and the mortar flows into it, which makes the mortar bond weakly to the base, and the water drop affects the usual bonding and softening of the mortar, and the strength of the mortar is lost. The primary factors affecting the water retention of mortar fibers are the type and amount of cementitious materials, the type, fineness and water consumption of sand. The mortar fiber is mixed with powdery mixed materials such as lime paste and fly ash to improve the water retention of the mortar. The factors that affect the activity of mortar fibers mainly include the type and amount of cementitious materials, the water consumption and the types, particles, shape, thickness and gradation of fine aggregates. In addition, it is also related to the mixed materials and external The type and dosage of the agent are related. In the usual environment, when the substrate is made of porous water-absorbing material, or when the construction is under dry heat conditions, a mortar with much mobility should be selected. On the contrary, if the base absorbs less water, or when the construction is under wet and cold conditions, mortar with low mobility should be selected.

The spray-anchored cement mortar, spray-anchored fine-stone cement concrete and spray-anchored cement concrete used in the protection of slope protection tunnels in large-scale civil engineering works are much higher than the demand for spray-anchored fine-stone cement concrete. The foundation technology of mortar fiber used in shotcrete and shotcrete requires abrasion resistance. If the spray anchor cement mortar is based on external protection, the stress demand is very low, then the demand for surface cement mortar can be met. If the spray anchor cement mortar is a stressed member, the force is the main force and the protection is supplemented, then the cement concrete should be satisfied. Fiber demand.