Elastic cement-based self-leveling mortar and preparation method thereof

Abstract

The invention discloses elastic cement-based self-leveling mortar. The elastic cement-based self-leveling mortar comprises early-strength cement master batch, common cement, waste tire particles, sand, water reducing agent, cellulose and dispersible latex powder. Sodium-silicon emulsion is added into the mortar when the mortar is used. A preparation method of the self-leveling mortar includes: evenly mixing the early-strength cement master batch, the common cement, the waste tire particles and the sand, sequentially adding the water reducing agent, the cellulose and the dispersible latex powder, evenly mixing and stirring all the raw materials, adding the sodium-silicon emulsion during site construction, and stirring. The elastic cement-based self-leveling mortar has the advantages the high permeability and stability of the sodium-silicon emulsion and the early strength and micro-expansibility of the early-strength cement master batch are utilized, an appropriate amount of compound additives are added after the sodium-silicon emulsion and the early-strength cement master batch are mixed according to a certain proportion to regulate the fluidity, crack resistance and operability of the mortar, properties such as early strength and rapid hardening, high fluidity, high bonding strength, crack resistance and durability of the mortar are achieved, and the crack resistance can effectively prevent terrace from cracking.

Description

technical field [0001] The invention belongs to the technical field of building chemical raw materials, and in particular relates to an elastic cement-based self-leveling mortar and a preparation method thereof. Background technique [0002] Cement mortar is a mortar prepared on site by cement, fine aggregate, water, and lime, active admixtures or admixtures as needed. Cement mortar is divided into cement mortar and cement mixed mortar. In construction engineering, the use of cement mortar is firstly used for foundation and wall masonry, as an adhesive for block masonry materials, such as cement mortar for masonry and red bricks, and secondly, it is used for indoor and outdoor Plastering. In the prior art, the floor made of traditional cement-based self-leveling mortar is a hard floor, which is greatly affected by temperature, and will easily crack due to thermal expansion and contraction with weather changes. The service life is relatively short and the maintenance cost is...

AI Technical Summary

Problems solved by technology

In the prior art, the floor made of traditional cement-based self-leveling mortar is a hard floor, which is greatly affected by temperature, and will easily crack due to thermal expansion and contraction with weather changes. The service life is relatively short and the maintenance cost is high. ; And another disadvantage of traditional self-leveling mortar is that the bond strength between the mortar and the ground is not high, and the mortar is easy to separate from the base concrete and easily peels off, resulting in ground defects and safety issues