Self-leveling mortar with later crack self-repairing function and preparation method thereof

Abstract

The invention relates to self-leveling mortar with a later-period crack self-repairing function, and the self-leveling mortar is prepared from the following raw materials: a cementing material, a fine aggregate, a filler, a modified blast furnace slag aggregate, a composite additive A, a composite additive B and redispersible latex powder. By matching with other ground decoration materials, the later cracking risk of the self-leveling mortar and the later maintenance cost of the product can be reduced, and the service life of the product is prolonged.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a self-leveling mortar with a late crack self-repairing function and a preparation method thereof. Background technique [0002] Modern home improvement ground leveling mostly uses ground self-leveling mortar. When constructing this product, you only need to add water according to the specified amount of water and stir evenly, and pour it manually or by pumping on the ground of the cement mortar leveling layer. Spread out with special construction tools, rely on the self-weight and fluidity of the slurry to self-level, and solidify to form a flat and smooth floor surface. With the promotion and development of the market, in some large and medium-sized cities, this product has been promoted and applied to a certain extent. [0003] However, because the traditional self-leveling mortar is a complex system composed of ternary or multi-component system materials, the requ...

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Problems solved by technology

[0003] However, since the traditional self-leveling mortar is a complex system composed of ternary or multi-component system materials, the requirements for the variety, specification, dosage and matching of raw materials are very strict.

And after the construction of the product is completed, due to the prolongation of the product itself over time, the cementitious materials in the system, such as cement and dispersible latex powder, will deteriorate to a certain extent, reducing the strength and cohesion of the product itself

And the outside will be affected by changes in the complex environment (such as settlement or impact by external forces, etc.), and the product will inevitably have tiny cracks and local damage under the action of external force. produce a further drop

However, if the repair is carried out according to the traditional repair method, not only the location of the crack is difficult to determine, but also the repair work is heavy, time-consuming and labor-intensive

[0004] Therefore, it is urgent to develop a self-leveling mortar with self-repairing function to solve the problem of cracks in the product later, and to a certain extent avoid the tedious repair process in the later stage

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