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Anti-corrosion and anti-rust type anti-crack waterproof agent

An anti-crack waterproof agent and anti-rust technology, applied in the field of concrete admixtures, can solve the problems of unresolved expansion reaction rate of calcium expansion agent, inability to take into account anti-corrosion, anti-rust, waterproof and impermeability, anti-cracking and other problems, so as to improve engineering applications effect, improve the waterproof and impermeability level, reduce the effect of erosion

Pending Publication Date: 2021-08-27
TIANJIN JINSHENGYUAN SPECIAL BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide an anti-corrosion and anti-cracking anti-rust waterproofing agent, which is used to solve the problem that the existing concrete additives cannot take into account the effects of anti-corrosion and anti-rust, waterproof and anti-seepage, and anti-cracking, and the unresolved calcium expansive agent in 40 The problem of expansion reaction rate at ~60°C

Method used

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  • Anti-corrosion and anti-rust type anti-crack waterproof agent
  • Anti-corrosion and anti-rust type anti-crack waterproof agent
  • Anti-corrosion and anti-rust type anti-crack waterproof agent

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The specific preparation steps of the anti-corrosion and anti-rust type anti-crack waterproofing agent in this embodiment are as follows:

[0036] (1) 49wt% ultrafine mineral powder and 49wt% ultrafine fly ash are compounded into ultrafine mineral admixture, as anticorrosion component; Get 2wt% sodium hexametaphosphate as antirust component, and The ultra-fine mineral admixture is evenly mixed to obtain anti-corrosion and anti-rust components.

[0037] (2) Mix 72wt% limestone powder, 7wt% anhydrite, 3wt% iron slag powder, 9wt% bauxite powder, and 9wt% non-metal oxide-metal oxide mixture as raw materials, and add water to prepare Raw meal balls; the raw meal balls were calcined at 1300°C for 40 minutes to obtain clinker balls; the clinker balls were ground and passed through a 150 μm sieve, and the sieve residue was not more than 2% of the total mass, and the undersize The specific surface area is 230~330m 2 / kg to obtain hydration-regulated calcium expansion clinker. ...

Embodiment 2

[0040] When preparing the anti-corrosion and anti-rust anti-cracking waterproof agent in this example, based on the preparation steps of the above-mentioned Example 1, only the anti-corrosion and anti-rust component distribution ratio is adjusted to 50wt%, the expansion component distribution ratio is adjusted to 30wt%, waterproof and impermeable The proportion of components was adjusted to 20wt%, and other preparation processes and parameters were kept the same as in Example 1.

Embodiment 3

[0042] When preparing the anti-corrosion and anti-rust anti-crack waterproof agent in this example, based on the preparation steps of the above-mentioned Example 1, only the anti-corrosion and anti-rust component distribution ratio is adjusted to 10wt%, the expansion component distribution ratio is adjusted to 70wt%, waterproof and impermeable The proportion of components was adjusted to 20wt%, and other preparation processes and parameters were kept the same as in Example 1.

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Abstract

The invention discloses an anti-corrosion and anti-rust type anti-crack waterproof agent which comprises the following components in percentage by mass: 25-35% of an anti-corrosion and anti-rust component, 35-55% of an expansion component and 20-30% of a waterproof and anti-seepage component, the anti-corrosion and anti-rust component comprises an anti-corrosion component and an anti-rust component in percentage by mass; AND the anti-corrosion component is any one or more of superfine mineral powder, superfine fly ash and superfine silica fume, and the anti-rust component comprises any one or more of sodium hexametaphosphate, triisopropanolamine, sodium carbonate and anhydrous sodium metasilicate. According to the invention, on the basis of self-waterproofing of a concrete structure with expansion compensation and shrinkage and improved waterproof and impermeable grade, the anticorrosive and rust-resistant admixture is compounded, a proper component proportion is adopted, the expansion reaction rate can be regulated and controlled at 40-60 DEG C, the waterproof and impermeable grade of the concrete is improved, the erosion effect of harmful ions in the environment on the concrete structure is reduced, the three effects of corrosion prevention, rust resistance, water resistance, impermeability and crack resistance are considered, and the engineering application effect is improved.

Description

technical field [0001] The invention relates to the field of concrete admixtures, in particular to an anti-corrosion and anti-rust anti-cracking waterproof agent. Background technique [0002] At present, concrete is widely used in various construction engineering structures, and the crack resistance and durable design of concrete determine the safety and service life of buildings. On the one hand, the expansion agent can be added to compensate the shrinkage of the concrete, and the crack resistance of the concrete itself can be improved from the source, which can effectively avoid cracks in the concrete, especially harmful cracks; on the other hand, the addition of waterproof and impermeable components , which can improve the waterproof and impermeability grade of concrete; combining the above two improvement methods, the primary factor of concrete structure self-waterproof is crack resistance, and the second is to improve the waterproof and impermeability grade of concrete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B103/61C04B103/65C04B103/67
CPCC04B40/0039C04B2103/65C04B2103/61C04B2103/67
Inventor 徐伟栋李晓华郭培英刘迪李健李召辉
Owner TIANJIN JINSHENGYUAN SPECIAL BUILDING MATERIALS