CN215250470U - Concrete member with excellent mildew-proof and freeze-proof performance - Google Patents
Concrete member with excellent mildew-proof and freeze-proof performance Download PDFInfo
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- CN215250470U CN215250470U CN202121437612.9U CN202121437612U CN215250470U CN 215250470 U CN215250470 U CN 215250470U CN 202121437612 U CN202121437612 U CN 202121437612U CN 215250470 U CN215250470 U CN 215250470U
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Abstract
The application discloses concrete member with excellent mould proof antifreeze performance, it includes the concrete body, concrete body surface spraying organosilane inoxidizing coating, the surface spraying that the concrete body was kept away from to the organosilane inoxidizing coating has polyacrylic resin first protective layer. Organosilane inoxidizing coating improves the intensity, hardness and the waterproof performance of concrete body in this application, and the inner structure of polyacrylic resin first protective layer protection concrete body has the effect that improves the concrete protection.
Description
Technical Field
The present application relates to the field of concrete protection, and in particular to a concrete member having excellent mold and freeze protection properties.
Background
The concrete is one of the most important civil engineering materials in the present generation, and is an artificial building material prepared from a cementing material, granular aggregate, water, an additive and an admixture which are added if necessary according to a certain proportion, and subjected to uniform stirring, dense forming, curing and hardening. The concrete has the advantages of rich raw materials, low price, simple production process, high compressive strength, good durability, wide strength grade range and the like, so the consumption of the concrete is increased more and more. The concrete is widely applied to the fields of bridge construction, tunnel construction, road construction and the like, and concrete materials can be used for piers, anti-collision walls and the like of highway bridges. With the improvement of infrastructure, concrete is closer to the daily life of people.
However, with increasing age, bare concrete is susceptible to attack by various substances: water can cause calcification of the concrete; acids can damage the structure of the concrete; the chloride accelerates the oxidation of Fe in the reinforced concrete, so that the Fe is oxidized into Fe3O4、Fe(OH)3The compounds lead to the increase of the volume of the steel bars in the concrete, thereby extruding the concrete, causing the concrete to generate cracks and bringing great potential safety hazard to the life of people;in some rainy areas, the surface of the concrete can be mildewed and blackened.
The concrete is protected by painting on the surface of the concrete in the prior art, but the paint body is easy to crack because the shrinkage coefficients of the paint body and the concrete are inconsistent, rainwater permeates into the concrete from a gap of the paint body, so that the paint body on the surface of the concrete falls off, and the protection effect is poor.
SUMMERY OF THE UTILITY MODEL
In order to improve the protection effect of concrete, the application provides a concrete member with excellent mildew-proof and anti-freezing performances.
The concrete member with excellent mildew-proof and antifreezing performance provided by the application adopts the following technical scheme:
a concrete member with excellent mildew-proof and anti-freezing performances comprises a concrete body, wherein the concrete body is a hollow concrete body
The surface of the concrete body is sprayed with an organosilane protection layer, and the surface of the organosilane protection layer, which is far away from the concrete body, is sprayed with a polyacrylic resin first protection layer.
By adopting the technical scheme, the organosilane in the organosilane protective layer permeates into the concrete surface layer and is subjected to chemical bonding reaction with the concrete body, thereby realizing dealcoholization of the alkyl silanol, forming a compact and water repellent protective layer with a certain thickness, and having the function of water proofing of the concrete surface. If the concrete body has micro cracks, the coupling substance in the organosilane protective layer can penetrate into the cracks in the concrete body and has the chemical bonding reaction water repellency effect and the skeleton support strengthening effect, so that the micro cracks in the concrete body can be repaired, and the strength, the hardness and the waterproof performance of the concrete body are improved. The first polyacrylic resin protective layer has good water resistance, salt resistance and acid resistance, prevents water, acid and chloride from entering the concrete body, protects the internal structure of the concrete body, and can effectively protect the organosilane protective layer, thereby improving the protective effect of the concrete.
Optionally, the depth of the organosilane protective layer penetrating into the concrete body is 3 mm-10 mm.
By adopting the technical scheme, when the depth of the organosilane protection layer penetrating into the concrete body is less than 3mm, the effective components in the organosilane protection layer are difficult to completely penetrate into the concrete body to repair micro cracks, and the organosilane protection layer loses long-acting property; when the depth of the organosilane protective layer penetrating into the concrete body is more than 10mm, the organosilane protective layer spraying liquid is difficult to completely adhere to the surface of the concrete, the phenomenon of sagging of the spraying liquid is serious, and the permeation and impregnation effects of the organosilane protective layer are affected.
Optionally, the spraying thickness of the first polyacrylic resin protection layer is 0.5 mm-1.0 mm.
By adopting the technical scheme, when the spraying thickness of the first polyacrylic resin protective layer is less than 0.5mm, the first polyacrylic resin protective layer is difficult to play a durable waterproof and acid-proof protection role; when the spraying thickness of the polyacrylic resin first protective layer is larger than 1.0mm, the polyacrylic resin first protective layer spraying liquid is difficult to adhere to the surface of the organosilane protective layer, so that the organosilane protective layer is partially exposed outside, and the polyacrylic resin first protective layer is difficult to play a protection role at the moment.
Optionally, a reinforcing layer is added between the organosilane protective layer and the first polyacrylic resin protective layer.
By adopting the technical scheme, the reinforcing layer is formed by spraying the concrete reinforcing agent, the concrete reinforcing agent has extremely low surface tension, can quickly permeate into the unprotected concrete body and react with byproducts of cement hydration in the concrete to generate silicon dioxide gel, and the silicon dioxide gel can block capillary micropores in the concrete body, so that the compactness, compressive strength, hardness and wear resistance of the concrete surface are increased, and the supplementary protection effect is further played.
Optionally, a silicone resin anti-loss layer is additionally arranged between the reinforcing layer and the first polyacrylic resin protective layer.
By adopting the technical scheme, the silicone resin in the silicone resin anti-loss layer inhibits the loss of precipitated calcium ions in the concrete, and can effectively reduce the damage of calcium loss to the concrete structure, thereby reducing the possibility of weathering, corrosion and cracks of the concrete caused by calcium loss.
Optionally, the spraying thickness of the silicone resin anti-loss layer is 0.1 mm-0.5 mm.
By adopting the technical scheme, when the spraying thickness of the silicone resin anti-loss layer is less than 0.1mm, the content of active ingredients in the silicone resin anti-loss layer is too small, and the effect of inhibiting calcium loss is difficult to play; when the spraying thickness of the silicone resin anti-loss layer is more than 0.5mm, a serious liquid sagging phenomenon can be generated, so that the silicone resin anti-loss layer is difficult to attach to the organosilane protective layer, and effective penetrating ingredients in the organosilane protective layer can be peeled off from the surface of concrete.
Optionally, a polyacrylic resin second protective layer is additionally arranged between the silicone resin anti-loss layer and the polyacrylic resin first protective layer.
By adopting the technical scheme, when the concrete has calcium loss, the concrete is firstly inhibited by the silicone resin anti-loss layer, and the organic paint is dissolved in the polyacrylic resin second protective layer, so that the loss of calcium in the concrete is further reduced by the organic paint; the polyacrylic resin second protective layer further enables substances such as external water and acid to be difficult to enter the concrete body, the water resistance, salt resistance and acid resistance of the concrete member are enhanced, and the use stability and durability of the concrete member are further improved.
Optionally, the spraying thickness of the polyacrylic resin second protective layer is 0.2 mm-0.5 mm.
By adopting the technical scheme, when the spraying thickness of the polyacrylic resin second protective layer is less than 0.2mm, the effect of the organic paint is reduced; when the spraying thickness of the polyacrylic acid resin second protective layer is more than 0.5mm, the adhesion between the polyacrylic acid resin second protective layer and the polyacrylic acid resin first protective layer is inconvenient, so that the liquid sagging is generated.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the application, the organosilane protective layer and the polyacrylic resin first protective layer are additionally arranged on the surface of the concrete, so that the effects of preventing the concrete from water absorption and mildew, freezing and thawing weathering and brine corrosion can be effectively achieved, the internal structure of the concrete body is protected, and the protective effect of the concrete is improved;
2. according to the application, the silicon resin anti-loss layer is additionally arranged between the organosilane protective layer and the first polyacrylic resin protective layer, so that the calcium loss of concrete can be inhibited, and the possibility of weathering, corrosion and cracks of the concrete caused by the calcium loss is reduced;
3. the polyacrylic resin second protective layer is additionally arranged between the silicone resin anti-loss layer and the polyacrylic resin first protective layer, so that the use stability and durability of the concrete member are improved.
Drawings
Fig. 1 is a schematic sectional view of the entire structure of the present embodiment.
Description of reference numerals:
1. a concrete body; 2. an organosilane protective layer; 6. a reinforcement layer; 3. a first protective layer of polyacrylic resin; 4. a silicone anti-run-off layer; 5. a second protective layer of polyacrylic resin; 7. and (5) reinforcing steel bars.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
The embodiment of the application discloses a concrete member with excellent mildew-proof and anti-freezing performances.
Referring to fig. 1, the concrete member with excellent mildew and freeze resistance comprises a concrete body 1 and a reinforcing steel bar 7 arranged in the concrete body 1, wherein an organic silane protective layer 2, a reinforcing layer 6, a silicone resin anti-loss layer 4, a polyacrylic resin second protective layer 5 and a polyacrylic resin first protective layer 3 are sequentially sprayed on the surface of the concrete body 1.
Referring to fig. 1, an organosilane protection layer 2 is formed by spraying a silane coupling agent KH-560 on the surface of a concrete body 1, the silane coupling agent KH-560 is purchased from Nanjing chemical reagent GmbH, a coupling substance in the organosilane protection layer 2 permeates into the concrete body 1, the depth of the coupling substance permeating into the concrete body is observed through a short-acting coloring agent in the spraying process, so that the depth is 8mm, the permeation of the coupling substance increases the adhesive force of Ga and Mg compounds in the concrete body 1, and a skeleton supporting effect is achieved, so that the surface layer of the concrete is dense and hydrophobic, a repairing effect on microcracks in the concrete body 1 can be achieved, and the strength and the hardness of the concrete can be improved on the basis of repairing; the organosilane protection layer 2 is sprayed on the surface of the concrete body 1 which has no large cracks temporarily, if the water seepage of the concrete body 1 is large before the organosilane protection layer 2 is sprayed, the microcracks on the concrete body 1 can be changed into the large cracks, and the organosilane protection layer 2 can repair the microcracks before the microcracks are enlarged, so that the effect of avoiding the microcracks from being enlarged is achieved.
Referring to fig. 1, the reinforcing layer 6 is formed by spraying a concrete reinforcing agent, the concrete reinforcing agent is purchased from tianjin permanent concrete repair technology limited, the product number is G-6, the concrete reinforcing agent has extremely low surface tension, and rapidly permeates into the concrete body to react with a byproduct of cement hydration in the concrete to generate silica gel, and the silica gel can block capillary micropores in the concrete body, so that the compactness, compressive strength, hardness and wear resistance of the surface of the concrete body 1 are increased.
Referring to fig. 1, the silicone resin run-off prevention layer 4 is formed by spraying silicone resin having CAS number of 67763-03-5, and the thickness of the silicone resin run-off prevention layer 4 is 0.3mm if CO in the concrete body 1 is present2And CaCO in the concrete body 1 due to excessive moisture3Will mix with CO2And H2Reaction of O to Ca (HCO)3)2Solution, Ca (HCO)3)2After the solution flows through the organosilane protective layer 2, the solution contacts with the silicone anti-loss layer 4, and the silicone anti-loss layer 4 can play a role in sealing to prevent Ca (HCO) separated out from concrete3)2The loss is continued, so that the damage of calcium loss to the concrete structure is effectively reduced; the silicone resin anti-loss layer 4 can better bond the organosilane protective layer 2 and the polyacrylic resin second protective layer 5, so that the stability of the concrete member is improved.
Referring to fig. 1, the polyacrylic resin second protective layer 5 is formed by spraying a mixed solution of polyacrylic resin emulsion and organic paint, wherein the polyacrylic resin emulsion is purchased from yokewa seikaga technologies ltd, the organic paint is purchased from yokewa belchang paint technologies ltd, the product number is H06-21, and the thickness of the polyacrylic resin second protective layer 5 is 0.4 mm; in the construction process, if the construction environment is too cold, the moisture in the concrete body 1 can be solidified into ice in the solidification process of the concrete body 1, when the surrounding environment is heated, the moisture solidified in the concrete body 1 is liquefied, the volume is reduced after liquefaction, and a plurality of cavities flow down in the concrete body 1, so that the stability of the concrete structure is seriously influenced; the situation is similar to the above situation, when the moisture in the formed concrete body 1 is too much, if the weather is too cold, the water is solidified in the concrete, the volume of the ice formed by the solidification of the water is increased, and the original compact concrete body 1 may be cracked; the polyacrylic resin second protective layer 5 can form a three-dimensional network structure with certain strength and toughness, the three-dimensional network structure has excellent heat insulation performance, and the influence of sudden drop of external temperature on the concrete body 1 can be effectively reduced, so that the possibility that the concrete body 1 is frost-cracked in severe environment is reduced, and the stability of the concrete member is improved.
Referring to fig. 1, the polyacrylic resin first protection layer 3 is formed by spraying polyacrylic resin emulsion, the polyacrylic resin emulsion is purchased from the Hubei Yuanjiangchu technology limited company, the thickness of the polyacrylic resin first protection layer 3 is 0.8mm, and the polyacrylic resin in the polyacrylic resin first protection layer 3 has good water resistance, salt resistance and acid resistance, so that water, acid, chloride ions and other substances are difficult to enter the concrete body 1, and the internal structure of the concrete body 1 is effectively protected.
The concrete member with excellent mildew-proof and anti-freezing performance provided by the embodiment of the application has the following implementation principle: the organosilane protective layer 2 can enhance the compactness and the hydrophobicity of the surface of the concrete member, repair fine cracks in the concrete body 1 and prevent large cracks; the reinforcing layer 6 increases the compactness, compressive strength, hardness and wear resistance of the surface of the concrete body 1, and further plays a role in supplementary protection; when the concrete body 1 has calcium loss, part of CaCO in the concrete body 13Transformation ofIs Ca (HCO)3)2Ca (HCO) generated by the chemical combination reaction in the concrete body 13)2Ca (HCO) when flowing through the silicone run-off prevention layer 43)2Is blocked by the silicone anti-loss layer 4, so that the solution generated by calcium loss is difficult to flow to the polyacrylic resin second protective layer 5 even if Ca (HCO)3)2Can break through the silicone resin anti-run-off layer 4, and the polyacrylic resin second protective layer 5 is hydrophobic, so that Ca (HCO)3)2It is difficult to continue the forward flow, further reducing Ca (HCO)3)2Meanwhile, if the polyacrylic resin first protective layer 3 is mechanically damaged, the protective effect on the concrete body 1 is lost, and the polyacrylic resin second protective layer 5 can prevent rainwater, acidic substances or chlorides and other substances from entering the concrete body 1, so that the long-acting property of protection is further enhanced; the three-dimensional network structure in the polyacrylic resin second protective layer 5 has a certain heat preservation effect, and the possibility that the concrete body 1 is cracked due to freezing is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A concrete member having excellent mold and freeze preventing properties, comprising a concrete body (1), characterized in that: the concrete body (1) surface spraying organosilane inoxidizing coating (2), the surface spraying that organosilane inoxidizing coating (2) kept away from the concrete body has polyacrylic resin first protective layer (3).
2. The concrete member having excellent mold and freeze proofing properties according to claim 1, wherein: the depth of the organosilane protective layer (2) penetrating into the concrete body (1) is 3 mm-10 mm.
3. The concrete member having excellent mold and freeze proofing properties according to claim 1, wherein: the spraying thickness of the polyacrylic resin first protective layer (3) is 0.5 mm-1.0 mm.
4. The concrete member having excellent mold and freeze proofing properties according to claim 1, wherein: and a reinforcing layer (6) is additionally arranged between the organosilane protective layer (2) and the first polyacrylic resin protective layer (3).
5. The concrete member having excellent mold and freeze proofing properties according to claim 4, wherein: and a silicone resin anti-loss layer (4) is additionally arranged between the reinforcing layer (6) and the first polyacrylic resin protective layer (3).
6. The concrete member having excellent mold and freeze proofing properties according to claim 5, wherein: the spraying thickness of the silicone resin anti-loss layer (4) is 0.1 mm-0.5 mm.
7. The concrete member having excellent mold and freeze proofing properties according to claim 5, wherein: and a polyacrylic resin second protective layer (5) is additionally arranged between the silicone resin anti-loss layer (4) and the polyacrylic resin first protective layer (3).
8. The concrete member having excellent mold and freeze proofing properties according to claim 7, wherein: the spraying thickness of the polyacrylic resin second protective layer (5) is 0.2 mm-0.5 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121437612.9U CN215250470U (en) | 2021-06-25 | 2021-06-25 | Concrete member with excellent mildew-proof and freeze-proof performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121437612.9U CN215250470U (en) | 2021-06-25 | 2021-06-25 | Concrete member with excellent mildew-proof and freeze-proof performance |
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| CN215250470U true CN215250470U (en) | 2021-12-21 |
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