Concrete healant

Abstract

The invention discloses concrete healant, which comprises following components by weight percent: 30 to 55 percent of gelatinization materials, 40 to 65 percent of fine aggregates, 0.1 to 0.5 percent of water reducing component, 0.05 to 0.5 percent of early-strengthening component, 0.05 to 0.2 percent of delayed-coagulation component, 0.2 to 1.0 percent of nano materials, 0.5 to 1.0 percent of high-activity substances, 0.01 to 0.2 percent of water retention thickening component, 0.2 to 2.0 percent of polymer and 0.02 to 0.2 percent of defoaming agent. The concrete healant not only has characteristics of good mobility, fast strength development, high adhesion strength and small retraction, but also can fill active substances into original concrete gaps and can produce compact crystals, so that the cohesion strength of the new and the old concrete interfaces can be remarkably improved, and the concrete healant is applicable to the concrete mending projects of bridges, caves, industrial workshops and civil construction.

Description

technical field [0001] The invention relates to a concrete repair agent, which belongs to the technical field of building materials. Background technique [0002] It has been more than 170 years since the advent of concrete in 1830, and many important and large-scale infrastructures have been constructed of cement concrete. However, with the passage of time, due to the harsh natural environmental conditions in which some of these infrastructures are located (such as large temperature differences between day and night, seasonal dryness and wetness, strong waves, severe saline-alkali corrosion, etc.), some Due to changes in usage conditions (such as frequent rolling of heavy and overloaded vehicles, sudden increase in traffic volume, etc.), and frequent occurrence of traffic accidents in some areas, the infrastructure of cement concrete construction, especially expressways, has been severely damaged. [0003] Due to the huge scale of investment in the construction of cement c...

AI Technical Summary

Problems solved by technology

[0006] However, the existing polymer-modified cement mortar generally has no penetration function and cannot penetrate into the concrete, so it cannot fundamentally solve the problems of sanding, cracking and low strength of the original concrete.

At the same time, since ordinary polymer modified cement mortar has no self-leveling performance, it cannot be used in concrete repair projects where construction operations are difficult or cannot be artificially constructed.

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