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A kind of concrete surface color difference modification coating material

A technology of concrete surface and coating materials, applied in the direction of coating, etc., can solve the problems of poor color restoration and achieve low cost

Active Publication Date: 2020-08-11
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing coating materials on the poor restoration of the original color of the concrete with defects and develop a concrete surface color difference modification coating material

Method used

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  • A kind of concrete surface color difference modification coating material
  • A kind of concrete surface color difference modification coating material
  • A kind of concrete surface color difference modification coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A modified coating material for concrete surface color difference, its formula is (weight percentage):

[0035] Table 1 Formulation of modified coating material A for concrete surface color difference

[0036]

[0037] The preparation method is:

[0038] Put 1 part of ultra-fine Portland cement and 3 parts of water into a mixing tank, keep stirring at 500-1500rpm in a water bath at 50℃ for 24h, and then stand still. After suction filtration, a semi-hydrated product suspension is obtained. After drying at 105°C, it is ground and passed through a 45μm sieve to obtain the cement semi-hydrated product PHCM, which is reserved for future use.

[0039] Add water to the reaction kettle, add TFC-5 and Texanol under stirring, add MP50E and FAMEX 825 in sequence after stirring, and stir at 500-800 rpm until uniform, then primer is obtained.

[0040] Add deionized water to the reaction kettle, add TFC-5, TFE-1, CY-1, TexanolFOAMEX 825 in sequence under stirring. When one component is disper...

Embodiment 2

[0043] A modified coating material for concrete surface color difference, its formula is (weight percentage):

[0044] Table 2 Formulation of modified coating material B for concrete surface color difference

[0045]

[0046] The preparation method is:

[0047] Put 1 part of ultra-fine Portland cement and 4 parts of water into a mixing tank, keep stirring at 500-1500rpm in a water bath at 50°C for 24h, and then stand still. After suction filtration, a semi-hydrated product suspension is obtained. After drying at 105°C, it is ground and passed through a 45μm sieve to obtain the cement semi-hydrated product PHCM, which is reserved for future use.

[0048] Add water to the reaction kettle, add TFC-5 and Texanol under stirring, add MP50E and FAMEX 825 in sequence after stirring, and stir at 500-800 rpm until uniform, then primer is obtained.

[0049] Add deionized water to the reactor, add TFC-5, TFE-1, CY-1, Texanol, Propylene Glycol, FOAEX 825 under stirring, and then add the next one wh...

Embodiment 3

[0052] A modified coating material for concrete surface color difference, its formula is (weight percentage):

[0053] Table 3 Formulation of C color-difference modified coating material on concrete surface

[0054]

[0055] The preparation method is:

[0056] Put 1 part of ultra-fine Portland cement and 5 parts of water into a mixing tank, keep stirring at 500-1500rpm in a water bath at 50℃ for 24h, and then stand still. After suction filtration, a semi-hydrated product suspension is obtained. After drying at 105°C, it is ground and passed through a 45μm sieve to obtain the cement semi-hydrated product PHCM, which is reserved for future use.

[0057] Add water to the reaction kettle, add MP50E under stirring, and stir at 500-800 rpm until it is uniform to obtain the primer.

[0058] Add deionized water to the reactor, add TFC-5, TFE-1, CY-1, Texanol, Propylene Glycol, FOAEX 825 under stirring, and then add the next one when one component is dispersed or dissolved uniformly Components...

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Abstract

The invention relates to a concrete surface color difference modified coating material which consists of a bottom coating, a middle coating and a surface coating. The middle coating is a modified color mixing layer composed of a cement-based semi-hydrated product and can imitate the effect of natural return of alkali to concrete on the premise of being close to the concrete appearance color. The concrete surface color difference modified coating material provided by the invention has the benefits that the difference color can be mixed aiming at the defects of structure surface color difference, water waves, sand lines and the like, and the defect of pure color modification of a traditional coating material is overcome; the concrete surface color difference modified coating material has theadvantages of old-fashioned, green, environmentally friendly and the like.

Description

Technical field [0001] The invention relates to the technical field of concrete engineering decoration, in particular to a modified coating material for concrete surface color difference. Background technique [0002] Concrete is currently the most used structural material in infrastructure construction, and it consumes hundreds of millions of cubic meters each year. Due to improper concrete preparation and improper construction, some surface defects, such as color difference, alkali reversion, sand line, honeycomb, etc., often appear in structural concrete. Although these defects do not directly affect the bearing capacity and durability of the concrete structure, they Seriously affect the appearance of the structure. As people's demand for the appearance of concrete structures continues to increase, under the premise of not demolishing and rebuilding, the concrete structures with surface defects are modified to make the whole visually unpainted effect. This demand is in the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D143/04C09D125/14C09D133/04C09D7/61C09D133/16C09D133/08C09D183/08
CPCC09D125/14C09D133/04C09D133/08C09D133/16C09D143/04C09D183/04C09D183/08
Inventor 李享涛谢永江仲新华朱长华孔庆欣渠亚男苏婉玉陈颜裘智辉李连吉马学军
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI