CN212105242U - Repair reinforcing structure suitable for concrete surface layer defect - Google Patents
Repair reinforcing structure suitable for concrete surface layer defect Download PDFInfo
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- CN212105242U CN212105242U CN202020360545.4U CN202020360545U CN212105242U CN 212105242 U CN212105242 U CN 212105242U CN 202020360545 U CN202020360545 U CN 202020360545U CN 212105242 U CN212105242 U CN 212105242U
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Abstract
The utility model discloses a restoration reinforcing structure suitable for concrete surface defect, including the concrete main part, there is the surface defect layer on the top layer of concrete main part, the surface on surface defect layer is provided with the pretreating agent layer, the pretreating agent layer is including the first fluorosilicate surface pretreating agent layer, second fluorosilicate surface pretreating agent layer and the third fluorosilicate surface pretreating agent layer that set gradually, and spraying thickness reduces in proper order, the top on third fluorosilicate surface pretreating agent layer is provided with silicate waterborne infiltration crystallization type surface treating agent layer. In this way, the utility model discloses can improve the suitability of material to concrete surface defect, the material is transparent simultaneously, does not influence the outward appearance of concrete, can not drop, belongs to inorganic infiltration crystallization type material, and the durability is good, when repairing the reinforcing to the surface course concrete, still has certain water-resistant permeability, prevents external erosion to the concrete.
Description
Technical Field
The utility model relates to a building material technical field especially relates to a restoration reinforcing structure suitable for concrete top layer defect.
Background
In the concrete preparation process, due to the wall effect of a template-concrete interface, bleeding of the upper surface layer of the concrete and release agent, the cement hydration of the surface layer of the concrete is usually hindered, and when the concrete curing condition is insufficient, the surface moisture is lost to cause the adverse conditions of insufficient curing, insufficient cement hydration and the like, so that the compactness and the strength of the surface layer of the concrete are lower than those of the internal concrete in different degrees, and the durability of the concrete is also influenced; therefore, the surface concrete is disadvantageous both during the production and after the formation, compared to the interior of the concrete.
The most common reinforcement treatments for concrete surfaces are of two types: one is an organic treating agent, most of the organic surface treating agents are volatile organic compounds and organic coatings, and silicone, epoxy resin, acrylate, chloroprene rubber and the like are commonly used; the second is inorganic treating agent, mainly silicate paint and cement paint, etc., the silicate surface treating agent commonly used at present is sodium silicate, potassium silicate, lithium silicate, etc., the silicate paint can permeate into the concrete, and has complex physical and chemical reaction with cement hydration products to generate new insoluble substances to block capillary holes and cracks, so that corrosive media in the external environment can be prevented from entering the concrete for a long time, the concrete and reinforcing steel bars are protected from being corroded, the aim of repairing and enhancing is achieved, and the durability of the reinforced concrete structure is improved; for the cement-based paint, active substances in the cement-based paint permeate into concrete through capillary action, react with calcium hydroxide and free calcium ions in the concrete to generate crystals insoluble in water and block capillary pores, so that the effect of repairing and reinforcing the surface of the concrete is achieved, and the durability of a concrete structure is improved.
The organic surface treating agent is easy to pollute air in the manufacturing and using processes, is easy to age under ultraviolet rays and high temperature rays, has poor durability and short service life, and therefore, the organic surface treating agent not only pollutes the environment, but also causes the structure to be corroded after the surface treating layer fails to function. Compared with organic surface treatment agents, the inorganic surface treatment agent is more environment-friendly, has good durability and relatively long service life, but has the defects that when silicate coatings are used for concrete surfaces with serious defects and large porosity or when free calcium ions in concrete are small, crystals generated by reaction are not enough to fill internal pores, and the surface concrete treatment effect is poor or no effect is achieved; although the cement-based coating is stable in volume and can be bonded with concrete into a whole, the rigid material has no elasticity and cannot adapt to foundation deformation and temperature deformation, and once deformation occurs, a treatment layer is cracked, and the cement-based coating can also fail.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a restoration reinforcing structure suitable for concrete surface defect, can improve the suitability of material to concrete surface defect, and the material is transparent simultaneously, does not influence the outward appearance of concrete, belongs to infiltration crystallization type material, can not drop, and the inorganic class material of affiliation, the durability is good, in the reinforcing of repairing to surface concrete, still has certain water resistance permeability, prevents external erosion to the concrete.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a repair reinforcing structure suitable for concrete surface defect, including the concrete main part, there is the surface defect layer on the top layer of concrete main part, the surface on surface defect layer is provided with the pretreating agent layer, the pretreating agent layer includes along deviating from first fluorosilicate surface pretreating agent layer, second fluorosilicate surface pretreating agent layer and the third fluorosilicate surface pretreating agent layer that the direction on surface defect layer set gradually, the spraying thickness on first fluorosilicate surface pretreating agent layer, second fluorosilicate surface pretreating agent layer and third fluorosilicate surface pretreating agent layer reduces in proper order, the top on third fluorosilicate surface pretreating agent layer is provided with the treating agent layer, the treating agent layer is silicate waterborne infiltration crystallization type surface treating agent layer.
Preferably, the silicate aqueous permeable crystalline surface treatment agent layer is sprayed at least three times.
Preferably, the spraying dosage of each silicate water-based permeable crystallization type surface treating agent layer is 80-120 ml/m2。
Preferably, the spraying directions of the first fluorosilicate surface pretreatment agent layer, the second fluorosilicate surface pretreatment agent layer and the third fluorosilicate surface pretreatment agent layer are perpendicular to each other.
Preferably, the silicate aqueous permeable crystalline surface treatment agent layer is at least one of lithium silicate, potassium silicate and sodium silicate.
The utility model has the advantages that: the utility model provides a pair of repair reinforcing structure suitable for concrete surface defect can improve material suitability and reliability to concrete surface defect, and every component in this kind of dual component concrete surface treatment agent can independently react with hydration product calcium hydrate and free calcium ion in the concrete and generate insoluble substance, and fluorosilicate pretreating agent has the promotion effect to silicate treating agent's sclerosis coagulation; simultaneously, this restoration reinforcing structure all belongs to inorganic infiltration crystallization type material, and the material is transparent, does not influence the outward appearance of concrete, belongs to infiltration crystallization type material, can not drop, belongs to inorganic class material, and the durability is good, when repairing the reinforcing to surface course concrete, still has certain water-resistant permeability, prevents external erosion to the concrete, has richened the restoration reinforcing structure system of current concrete surface layer defect, has good market prospect.
Drawings
Fig. 1 is a schematic view of a repair reinforcement structure for concrete surface defects according to the present invention;
the parts in the drawings are numbered as follows:
1. a concrete body; 2. a surface defect layer; 3. a first fluorosilicate surface pretreatment agent layer; 4. a second fluorosilicate surface pretreatment layer; 5. a third layer of a fluorosilicate surface pretreatment agent; 6. a silicate aqueous osmolyte-crystalline surface treatment agent layer.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Example (b):
as shown in fig. 1, a repairing and reinforcing structure suitable for concrete surface defects comprises a concrete body 1, wherein a surface defect layer 2 exists on the surface of the concrete body 1, the defects of the concrete surface are usually caused by the wall effect of a template-concrete interface, bleeding of the concrete upper surface layer and blocking of cement hydration of the concrete surface layer by a release agent, and when the concrete curing conditions are insufficient, the unfavorable conditions of insufficient curing, insufficient cement hydration and the like caused by surface moisture loss result in that the compactness and strength of the concrete surface layer are lower than those of the internal concrete to different degrees, so that the repairing and reinforcing treatment on the defects of the concrete surface layer is needed.
As shown in fig. 1, a pretreatment agent layer is arranged on the surface of the surface defect layer 2, the pretreatment agent layer is a fluorosilicate surface pretreatment agent layer, the fluorosilicate surface pretreatment agent can penetrate into concrete in a short time after being sprayed and reacts with a cement hydration product calcium hydroxide to generate insoluble substances, and the insoluble substances block cracks and capillary pipelines so as to heal the concrete and improve the compactness and strength of the concrete; meanwhile, the fluorosilicate can accelerate the early reaction rate of the silicate and accelerate the coagulation and hardening of the silicate, thereby improving the early treatment effect.
As shown in FIG. 1, in order to ensure the effectiveness, the full coverage and the appropriate amount of penetration effect of the pretreatment coating, the fluorosilicate surface pretreatment layer comprises a first fluorosilicate surface pretreatment layer 3, a second fluorosilicate surface pretreatment layer 4 and a third fluorosilicate surface pretreatment layer 4 disposed in this order in a direction away from the surface defect layer 2The spraying thicknesses of the treating agent layer 5, the first fluorosilicate surface pretreating agent layer 3, the second fluorosilicate surface pretreating agent layer 4 and the third fluorosilicate surface pretreating agent layer 5 are reduced in sequence, and the spraying directions of the first fluorosilicate surface pretreating agent layer 3, the second fluorosilicate surface pretreating agent layer 4 and the third fluorosilicate surface pretreating agent layer 5 are mutually perpendicular. During construction, the first fluorosilicate surface pretreatment agent layer 3 is sprayed on the concrete surface, the second fluorosilicate surface pretreatment agent layer 4 is sprayed after drying, the third fluorosilicate surface pretreatment agent layer 5 is continuously sprayed after drying, and the total spraying amount is 300ml/m2。
As shown in figure 1, after the pretreatment agent is constructed and the surface is dried, the spraying of the treatment agent is started, namely, a treatment agent layer is arranged above a third silicate surface pretreatment agent layer 5, the treatment agent layer is a silicate water-based permeable crystallization type surface treatment agent layer 6, the silicate water-based permeable crystallization type surface treatment agent reacts with calcium hydroxide and free calcium ions in concrete to generate calcium silicate hydrate crystals to heal cracks, meanwhile, the pretreatment of fluorosilicate accelerates the coagulation and hardening of silicate, the combined action of two procedures greatly improves the treatment effect of the concrete surface, each component in the double-component concrete surface treatment agent provided by the utility model can independently react with the hydration product calcium hydroxide and the free calcium ions in concrete to generate insoluble substances, and the fluorosilicate pretreatment agent has a promoting effect on the coagulation and hardening of the silicate treatment agent, the method has higher applicability and reliability aiming at the concrete surface with different degrees of defects.
As shown in FIG. 1, the silicate aqueous permeable crystalline surface treatment agent layer 6 is sprayed at least three times, and the amount of spraying of each silicate aqueous permeable crystalline surface treatment agent layer 6 is 80 to 120ml/m2And after each spraying, the surface is basically dry, and then the next spraying can be carried out. The silicate aqueous permeable crystallization type surface treating agent is at least one of lithium silicate, potassium silicate and sodium silicate; usually, lithium silicate is used as the main ingredient, and potassium silicate and sodium silicate are used as the auxiliary ingredients, because lithium silicate has lower alkalinity and lower viscosity than potassium silicate and sodium silicateThe concrete has the characteristics of higher reaction activity and better permeability, and can quickly permeate 3-5cm below the surface of concrete; this utility model provides a two ingredient repair reinforcing structure is inorganic infiltration crystallization type material, can not drop, can not influence the concrete outward appearance, and the durability is good, and when improving closely knit nature and repairing the reinforcing to the surface course concrete, still has certain water resistance permeability, and 7d mortar impervious strength can reach 1.2MPa, can effectively prevent external erosion to the concrete.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (4)
1. The utility model provides a restoration reinforcing structure suitable for concrete surface layer defect which characterized in that: comprises a concrete main body (1), a surface layer defect layer (2) is arranged on the surface layer of the concrete main body (1), the surface of the surface layer defect layer (2) is provided with a pretreatment agent layer, the pretreatment agent layer comprises a first fluorosilicate surface pretreatment agent layer (3), a second fluorosilicate surface pretreatment agent layer (4) and a third fluorosilicate surface pretreatment agent layer (5) which are sequentially arranged along the direction deviating from the surface layer defect layer (2), the spraying thicknesses of the first fluorosilicate surface pretreatment agent layer (3), the second fluorosilicate surface pretreatment agent layer (4) and the third fluorosilicate surface pretreatment agent layer (5) are reduced in sequence, a treating agent layer is arranged above the third fluosilicate surface pretreating agent layer (5), the treating agent layer is a silicate aqueous permeable crystallization type surface treating agent layer (6).
2. A repair reinforcement structure for concrete skin defects according to claim 1, wherein: the silicate aqueous permeable crystallization type surface treatment agent layer (6) is arranged by spraying at least three times.
3. According to claimClaim 2 said a repair reinforcing structure suitable for concrete surface layer defect, its characterized in that: the spraying dosage of each silicate water-based permeable crystallization type surface treating agent layer (6) is 80-120 ml/m2。
4. A repair reinforcement structure for concrete skin defects according to claim 1, wherein: the spraying directions of the first fluorosilicate surface pretreatment agent layer (3), the second fluorosilicate surface pretreatment agent layer (4) and the third fluorosilicate surface pretreatment agent layer (5) are mutually vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020360545.4U CN212105242U (en) | 2020-03-20 | 2020-03-20 | Repair reinforcing structure suitable for concrete surface layer defect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020360545.4U CN212105242U (en) | 2020-03-20 | 2020-03-20 | Repair reinforcing structure suitable for concrete surface layer defect |
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| CN212105242U true CN212105242U (en) | 2020-12-08 |
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| CN202020360545.4U Active CN212105242U (en) | 2020-03-20 | 2020-03-20 | Repair reinforcing structure suitable for concrete surface layer defect |
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