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Coating material for preventing concrete from carbonization
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A concrete and coating technology, applied in the field of concrete, can solve the problems of inconspicuous effect and increased production cost, and achieve the effects of reduced production cost, improved polyurea structure, and good compatibility
Inactive Publication Date: 2016-12-07
王青
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Abstract
Description
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Problems solved by technology
At present, the main method is to modify the formula of concrete to form a "closed hole" inside to prevent the outside air from entering, but the effect is not obvious, and the production cost is greatly increased.
Method used
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Experimental program
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Effect test
Embodiment 1
[0029] A coating material for preventing concrete carbonation, which is prepared from the following components in parts by weight:
[0040] The preparation method is that the above-mentioned raw materials are added into a mixing barrel and stirred evenly to obtain the coating material for preventing carbonation of concrete.
[0041] The anti-carbonation coating material of concrete prepared in this embodiment is coated on the concrete surface, and its experimental test index is shown in the following table:
[0042] project
Embodiment 2
[0044] A coating material for preventing concrete carbonation, which is prepared from the following components in parts by weight:
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Abstract
The invention discloses a coating material for preventing concrete from carbonization. The coating material is prepared from the following components in parts by weight: 15-20 parts of styrene-acrylic emulsion, 10-25 parts of acrylic acidemulsion, 30-45 parts of cement, 30-55 parts of fly ash, 3-5 parts of preservative, 1-1.5 parts of dispersing agent, 0.2-0.5 part of defoamer, 0.4-0.6 part of anti-settling agent, 0.1-0.3 part of leveling agent and 25-30 parts of water. By utilizing the viscosity of the styrene-acrylic emulsion and acrylic acid emulsion, the cement, fly ash and other raw materials are mixed to form a compact slurry, and the slurry is coated on the outer surface of the concrete to form a compact hard protective layer on the concrete surface so as to perform favorable isolation functions on carbon dioxide, oxygen and other components in air, thereby achieving the effect of preventing the concrete surface from carbonization; and thus, the concrete has favorable weather resistance and fouling resistance.
Description
technical field [0001] The invention relates to the technical field of concrete, in particular to a coating material for preventing carbonization of concrete. Background technique [0002] Concrete structure is one of the most widely used structures. In my country, about 70% of housing construction and 50% of bridge structures use concrete structure. With the increase of the service time of these engineering structures, more and more attention has been paid to the durability damage of concrete materials and structures. Many engineering structures often cause functional degradation or even structural damage due to durability, which brings unnecessary costs to the society. loss. [0003] Concrete carbonation is one of the important durability indicators of concrete. Because carbon dioxide or water in the atmosphere reacts with calciumhydroxide in cement stones to form calciumcarbonate through the cracks of concrete, the alkalinity of concrete is reduced, making the concrete...
Claims
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Application Information
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