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Concrete healant

A concrete repairing agent and retarding technology, applied in the field of concrete repairing agents, can solve the problems of ordinary polymer-modified cement mortar having no self-leveling performance, unusable concrete repair works, and impermeable concrete, etc. The effect of long construction time and simple construction

Active Publication Date: 2013-01-30
苏州市姑苏新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A concrete repair agent, by weight, comprises the following components:

[0052]

[0053] Among them: low alkalinity sulfoaluminate cement, CSA expansion agent, polycarboxylate superplasticizer, tartaric acid, lithium carbonate, fluorine surfactant, active nano-SiO 2 , cellulose ether (viscosity of 400 centipoise), redispersible latex powder and dry powder defoamer are all commercially available products;

[0054] The fine aggregate is 70~140 mesh river sand.

[0055] The preparation method of the above-mentioned Examples 1 to 3 is: weighing various raw materials according to the above-mentioned proportions, and then mixing them in a mixer until they are evenly stirred.

[0056] According to the industry standard JC / T 984-2011 "Polymer Cement Waterproof Mortar", the product performance of the invention is tested, and the specific performance indicators are shown in the following table:

[0057]

[0058] As can be seen from the above table, the concrete repair ag...

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PUM

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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, belonging 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 from cement concrete. However, with the passage of time, some of these infrastructures are located in relatively harsh natural conditions (such as large temperature differences between day and night, seasonal wet and dry seasons, strong waves scouring, serious saline-alkali corrosion, etc.), and some Due to changes in use conditions (such as frequent rolling of heavy and overloaded vehicles, sharp increase in traffic flow, etc.) and frequent occurrence of traffic accidents in some areas, the infrastructure of cement concrete construction, especially highways, is seriously damaged. [0003] Due to the large scale of investment in the construction of cement and concrete infrastru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B22/06C04B22/10C04B111/72
Inventor 王惠明李光球薛亮亮陈晓龙
Owner 苏州市姑苏新型建材有限公司
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