A self-leveling silica sol mortar structure for ground surfaces and its construction method.

Abstract

This invention discloses a self-leveling silica sol mortar structure for ground surfaces and its construction method, comprising a concrete base layer, an interface agent layer, and a silica sol mortar self-leveling layer; the interface agent layer is disposed on the concrete base layer; the silica sol mortar self-leveling layer is disposed on top of the interface agent layer; and a high-bond-energy silica sol mortar self-leveling colored penetrating agent layer is further disposed on the silica sol mortar self-leveling layer. This invention solves the problems of cracking, hollowing, sanding, and poor flatness that occur after traditional cement mortar is laid. After the silica sol mortar leveling layer is poured and laid, the floor surface has extremely strong impact resistance and good adhesion. Moreover, due to the high fluidity of the mortar, it can be pumped over long distances and self-levels, making it easy to control the flatness. It can be used for one-time self-leveling on most surfaces, saving labor costs and simplifying construction.

Description

Technical Field

[0001] This invention relates to the field of flooring technology, specifically to a silica sol mortar self-leveling structure for floors and its construction method. Background Technology

[0002] With the continuous development of architecture, the requirements for the practicality of buildings are becoming increasingly stringent. Beyond aesthetics and practicality, environmental protection and economy are also essential. The floor slab is the part of a building that comes into contact with the underlying soil layer. It bears the ground load of the lower floors and must possess good wear resistance, moisture resistance, waterproofing, and thermal insulation properties. However, due to varying settlement patterns, the shrinkage deformation of large basement structures with extra-long and extra-wide decorative surfaces, as well as temperature stress in the concrete, can easily lead to problems such as hollow areas, cracking, sanding, and peeling. While traditional expansion joints can minimize hollow areas and cracking, the finishing layer often uses fine aggregate concrete as its main structure. As a post-construction layer, it is prone to localized hollow areas at the interface with the original concrete slab. Furthermore, inadequate curing can easily lead to uneven shrinkage and cracking. The construction of fine aggregate concrete layers is also very cumbersome in terms of both materials and tools, resulting in low efficiency. It also requires curing according to the material's properties, and inadequate curing can easily lead to subsequent quality defects. Existing technologies also include self-leveling construction methods to address the aforementioned defects in flooring construction.

[0003] For example, Chinese patent CN114278048A discloses an antistatic polyurethane mortar self-leveling floor and its construction process. The coating structure formed by the construction method is a single-layer structure, consisting of three layers from top to bottom: a conductive (antistatic) surface layer, a conductive layer, and a base layer. The three film-forming resins are all polyurethane materials with the same chemical composition. The base layer is used to pre-treat the surface of the concrete substrate; the conductive layer is used to receive and conduct static electricity; and the antistatic surface layer is used to prevent the generation of static electricity, thus improving the antistatic ability of the floor. It can bond firmly to the concrete substrate and is not prone to cracking, peeling, or blistering. However, the polyurethane floor designed in this patent lacks anti-slip, wear-resistant, and corrosion-resistant properties, and is not easy to clean, has high maintenance costs, and cannot guarantee the flatness after construction, requiring multiple manual leveling operations, resulting in high construction costs.

[0004] CN209227979U discloses a rigid solvent-free polyurethane mortar self-leveling floor, which, from bottom to top, includes a base layer, an epoxy primer layer, a quartz sand layer, a rigid solvent-free polyurethane self-leveling layer, and a water-based polyurethane topcoat layer. After curing, this rigid solvent-free polyurethane mortar self-leveling floor exhibits good wear resistance and chemical corrosion resistance. Its surface is easy to clean and resistant to water, seawater and wastewater, various alkaline substances, diluents, salt water, mineral oil, lubricating oil, and fuels, increasing the floor's wear resistance and crack coverage. However, its construction cost is high, labor intensity is high, and construction period is long. Furthermore, it cannot effectively solve problems such as peeling and sanding in the later stages of construction.

[0005] As can be seen from the above, the existing technology cannot effectively solve the problems of floor cracking, sanding, and poor flatness during construction. Therefore, it is urgent to solve these problems. Summary of the Invention

[0006] Therefore, the present invention provides the following technical solution:

[0007] A self-leveling silica sol mortar structure for ground surfaces includes a concrete base layer, an interface agent layer, and a self-leveling silica sol mortar layer.

[0008] The interface agent layer is disposed on the upper part of the concrete base layer;

[0009] The silica sol mortar self-leveling layer is set on top of the interface agent layer;

[0010] Preferably, the interface agent layer has a double-layer structure, specifically including a first interface agent layer and a second interface agent layer; the first interface agent layer is located between the second interface agent layer and the concrete base layer; the second interface agent layer is located between the first interface agent layer and the silica sol mortar self-leveling layer.

[0011] Preferably, the thickness of the silica sol mortar self-leveling layer is 10–60 mm.

[0012] Preferably, a high bond energy silica sol mortar self-leveling colored penetrant layer is further provided on the upper part of the silica sol mortar self-leveling layer.

[0013] Preferably, the thickness of the high bond energy silica sol mortar self-leveling colored penetrant layer is 2-4 mm.

[0014] This invention proposes a construction method for a self-leveling silica sol mortar structure for ground surfaces, comprising the following steps:

[0015] S1. Inspect the concrete base surface for cracks and hollow areas; and grind the concrete base surface to remove surface dust.

[0016] S2. Mark the locations of cracks and hollow areas on the concrete base surface that existed in step S1 and repair them.

[0017] S3. Apply an interface agent to the concrete substrate surface after steps S1-S2 to form an interface agent layer.

[0018] S4. After the interface agent layer dries, the silica sol mortar is poured by self-flow to form a silica sol mortar self-leveling layer.

[0019] S5. The surface layer can be cured and polished after drying.

[0020] S6. Seal the dried silica sol mortar self-leveling layer with a high bond energy silica sol mortar self-leveling colored penetrating agent layer.

[0021] Preferably, the cracked or hollow areas of the concrete base floor in step S2 are partially cut open, and the first leveling and repair is carried out using silica sol mortar self-leveling.

[0022] Preferably, in step S3, the first layer of interface agent is evenly applied to the surface of the concrete base layer using a brown brush, allowing it to fully penetrate into the base concrete.

[0023] The second layer of interface agent is evenly applied onto the first layer of interface agent after it has dried.

[0024] For the curing step in S5, at a room temperature of +20℃, people can walk on the self-leveling silica sol mortar after 4-6 hours of natural curing.

[0025] Preferably, after step S6, for the completed surface layer, use a concrete cutter to cut expansion joints along the positions marked in step S2, clean them, press in the backing strip, and seal them with elastic sealant.

[0026] Compared with the prior art, the present invention has at least the following advantages:

[0027] 1. This invention transforms the rigidity of traditional cement into flexibility, utilizing silica sol leveling material to solve problems such as cracking, hollowing, dusting, sanding, delamination, low later-stage strength, and poor surface smoothness that often occur with traditional cement mortar leveling. The silica sol mortar leveling layer used in this invention, after being poured and laid, gives the floor surface extremely strong impact resistance. Furthermore, this silica sol mortar has excellent adhesion, and due to its high fluidity, it can be pumped over long distances, making construction convenient. It also self-levels, making it easy to control the smoothness, allowing for one-time self-leveling on most surfaces, saving on the cost of manual leveling.

[0028] 2. In the floor structure designed in this invention, the silica sol mortar is in contact with the concrete base layer, and there is no need to lay thermal insulation and sound insulation pads or thermal insulation materials in between. Moreover, the silica sol mortar is easy to construct, has high strength, good flatness, and good stability, and can directly replace the traditional fine stone concrete leveling of the structural surface.

[0029] 3. The thickness of the silica sol mortar self-leveling layer is between 10 and 60 mm. Compared with the traditional mortar self-leveling structure, it greatly reduces the thickness of the space and effectively improves the usable space of the floor.

[0030] 4. On the completed silica sol mortar self-leveling layer, apply a high-bond-energy silica sol mortar self-leveling colored penetrating agent layer to enhance the wear resistance and decoration of the floor surface, meeting the needs of some mid-to-high-end parking garages and other special scenarios.

[0031] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0032] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0034] Figure 1 A tomographic diagram of a self-leveling silica sol mortar structure for ground surfaces provided by the present invention;

[0035] Figure 2 A tomographic diagram of the structure of a high-bond-energy silica sol mortar self-leveling colored penetrant layer after construction of a silica sol mortar self-leveling structure for ground surfaces provided by the present invention;

[0036] Figure 3 This is a tomographic diagram of the interface base layer in a self-leveling silica sol mortar structure for ground surfaces, provided by the present invention.

[0037] Figure reference numerals: 1. Concrete base layer; 2. Interface agent layer; 21. First interface agent layer; 22. Second interface agent layer; 3. Silica sol mortar self-leveling layer; 4. High bond energy silica sol mortar self-leveling colored penetrating agent layer. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0039] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0040] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0041] Example 1

[0042] This embodiment describes a self-leveling silica sol mortar structure for ground surfaces, see attached diagram. Figure 1 As shown, Figure 1 A tomographic diagram of a self-leveling silica sol mortar structure for ground surfaces provided by the present invention.

[0043] The silica sol mortar self-leveling structure includes a concrete base layer 1, an interface agent layer 2, and a silica sol mortar self-leveling layer 3.

[0044] The interface agent layer 2 is disposed on the concrete base layer 1;

[0045] The silica sol mortar self-leveling layer 3 is disposed on the upper part of the interface agent layer 2;

[0046] Furthermore, the thickness of the silica sol mortar self-leveling layer 3 is 10-60 mm, preferably 30-40 mm.

[0047] In the preferred construction scheme, the thickness of the silica sol mortar self-leveling layer 3 is 8mm.

[0048] Compared to existing self-leveling floor structures, the use of silica sol leveling material solves the problems of traditional cement mortar leveling, such as cracking, hollowing, dusting, sanding, delamination, low later strength, and poor flatness. After the silica sol mortar leveling layer is poured and laid, the floor surface has extremely strong impact resistance and excellent adhesion to the original concrete base layer. It solves the problems associated with traditional cement mortar in one go. Moreover, due to its high fluidity, it can be pumped over long distances and self-levels, making it easy to control flatness. It can be used for one-time self-leveling on most surfaces, simplifying construction.

[0049] Example 2

[0050] Based on Example 1, the self-leveling silica sol mortar structure for ground surfaces described in this invention will be further explained.

[0051] refer to Figure 3 As shown, Figure 3 This is a tomographic diagram of the interface substrate in a silica sol mortar self-leveling structure for ground surfaces provided by the present invention. The interface agent layer 2 involved in the above embodiment has a double-layer structure, specifically including a first interface agent layer 21 and a second interface agent layer 22; the first interface agent layer 21 is located between the second interface agent layer 22 and the concrete substrate 1; the second interface agent layer 22 is located between the first interface agent layer 21 and the silica sol mortar self-leveling layer 3.

[0052] In addition, in a preferred embodiment, a high bond energy silica sol mortar self-leveling colored penetrant layer 4 is further provided on the silica sol mortar self-leveling layer 3, such as... Figure 2 As shown, Figure 2 The tomographic diagram of a silica sol mortar self-leveling structure for ground surfaces, provided by the present invention, showing the structure of a high bond energy silica sol mortar self-leveling colored penetrant layer after its construction.

[0053] The thickness of the high bond energy silica sol mortar self-leveling colored penetrant layer 4 is 2-4 mm.

[0054] During construction, after the poured and laid silica sol mortar self-leveling layer dries, a high-bond-energy silica sol mortar self-leveling colored penetrating agent layer is applied for sealing treatment to enhance the wear resistance and decorative properties of the self-leveling floor. The application of a high-bond-energy silica sol mortar self-leveling colored penetrating agent layer is primarily for use in mid- to high-end parking garages, hospitals, schools, and other special locations.

[0055] The floor structure designed in this application is in direct contact with the concrete base layer, eliminating the need for intermediate insulation and soundproofing pads or insulation materials. Furthermore, the silica sol mortar self-leveling system is easy to apply, boasts high strength, excellent flatness, and good stability, and can directly replace traditional fine aggregate concrete leveling for structural surfaces. Moreover, the thin layer of silica sol mortar significantly reduces the required floor thickness, effectively increasing the usable floor space.

[0056] Example 3

[0057] Based on Examples 1 and 2, this invention provides a simple description of a construction method for a self-leveling silica sol mortar structure for ground surfaces.

[0058] A construction method for a self-leveling silica sol mortar structure for ground surfaces includes the following steps:

[0059] S1. Inspect the surface of concrete base 1 for cracks and hollow areas; and grind the surface of concrete base 1 to remove surface dust.

[0060] Specifically, during construction, the base layer is sandblasted using a professional floor sandblasting machine to remove loose material and laitance from the weak surface, creating a rough surface that forms a good bonding interface. The sandblasted surface is free of soft laitance, dense, and free of loose material or debris. Areas not treated by the large sandblasting machine must be treated with a flatbed grinder. After sandblasting and dust removal, the surface cracks and hollow areas are checked again. The loose soil generated after base layer sanding must be vacuumed up, ensuring that the surface is free of impurities and dust that could affect adhesion.

[0061] S2. Mark the locations of cracks and hollow areas on the surface of the concrete base layer 1 from step S1 and repair them.

[0062] S3. Apply an interface agent to the surface of the concrete base layer 1 after steps S1-S2 to form an interface agent layer 2.

[0063] S4. After the interface agent layer 2 dries, the silica sol mortar is poured and laid by self-flowing to form the silica sol mortar self-leveling layer 3.

[0064] S5. Curing the surface layer after construction and drying can also be done by polishing the surface.

[0065] S6. Seal the dried silica sol mortar self-leveling layer 3 with a high bond energy silica sol mortar self-leveling colored penetrant layer 4.

[0066] Furthermore, for the cracked and hollow areas of the concrete base 1 in step S2, the ground is partially cut open, and self-leveling mortar with silica sol is used for the first leveling and repair.

[0067] Furthermore, in step S3, two coats of interface agent are applied to the surface of the concrete base layer 1, namely the first interface agent layer 21 and the second interface agent layer 22. The interface agent is diluted with water before application. The dilution ratio for the first coat of interface agent is 1:5, and the dilution ratio for the second coat of interface agent is 1:3.

[0068] The first coat of interface agent is applied evenly to the surface of the concrete base layer 1 using a 600mm wide brown brush, allowing it to fully penetrate into the base concrete. Wait approximately 12 hours before applying the second coat.

[0069] The second layer of interface agent is evenly applied onto the first interface agent layer 21 after it has dried, and it dries in about 3 hours.

[0070] During the application process, care should be taken to ensure that the coating is applied evenly and without any omissions, and to prevent the formation of localized pooling of liquid.

[0071] In step S4, when laying the silica sol mortar, first mark the boundaries according to the construction section division. Based on the pumping capacity of the silica sol mortar self-leveling pump, boundaries are generally set approximately every 18 meters. Use a chalk line to mark the lines; the boundaries should generally be placed in the center of the column. Then, attach the dividing sponge strips to the marked lines. Next, use the sponge strips to seal stair treads, doorways, drains, boundaries, column edges, etc. Before construction, carefully check the corners to ensure that any potential leaks are strictly sealed. For expansion joints, use wide sponge strips; to prevent misalignment, use wooden blocks or square steel to support them later.

[0072] In step S4, the silica sol mortar is laid using a self-leveling pump. The pumped material should be transported to the construction area in advance. After the self-leveling silica sol mortar self-leveling layer has flowed out to a width of about 500mm and leveled itself, an operator wearing tall rubber boots and holding a long-handled toothed steel scraper gently combs the surface of the self-leveling silica sol mortar self-leveling layer 3 for the first time. The gentle troweling helps to remove air bubbles from the interior of the silica sol mortar self-leveling layer, thus aiding in leveling and density.

[0073] Afterwards, once the self-leveling silica sol mortar has flowed out over a width of about 1000mm, workers wearing spiked shoes and holding long steel scrapers will gently comb through the surface of the self-leveling silica sol mortar a second time. The gentle troweling will also help to compact the surface.

[0074] It should be noted that during construction, high temperatures and airflow should be avoided, and the area should be open for 20 minutes, after which it can be walked on.

[0075] Treatment of joints between different construction areas: For the area being constructed first, after 2 hours, remove the sponge strip from the boundary of that area and firmly attach protective material around it to prevent contamination of the completed self-leveling area during the self-leveling construction of adjacent areas. When the self-leveling construction of subsequent areas reaches the joint, use a scraper to control the flatness.

[0076] For the curing step in S5, at a room temperature of +20℃, people can walk on the self-leveling silica sol mortar after 4-6 hours of natural curing. If necessary, the surface of the self-leveling silica sol mortar can be sanded 24 hours after it has been laid.

[0077] Under normal dry conditions (+20℃, 50% RH), the walk-through opening time is 2 days, and it can be used normally after 7 days. The specific drying time also depends on the site conditions during construction. For example, high ground humidity and poor drying conditions will prolong the drying time.

[0078] After step S6, the expansion joints are cut using a concrete cutter on the completed surface layer. After cleaning, a backing strip is pressed in and sealed with elastic sealant. The cutting location of the expansion joints depends on the actual construction conditions. The cutting positions of the expansion joints during this construction process are marked when the concrete base surface is inspected before construction. The specific operation is understandable to those skilled in the art, so it will not be described in detail.

[0079] The advantages of the ground after construction are: (1) excellent flatness; (2) the mortar can be pumped and construction is convenient; (3) quick drying and setting; (4) good wear resistance; (5) low shrinkage rate; (6) fire rating A; (7) thin thickness, reducing self-weight.

[0080] Example 4

[0081] Based on embodiments 1-3, this embodiment introduces the structure of microcrystalline thermal insulation mortar self-leveling layer and silica sol mortar self-leveling layer in the laying of self-leveling floor.

[0082] The similarities to the above embodiments will not be repeated.

[0083] During the construction process, a 20mm thick microcrystalline thermal insulation mortar self-leveling layer is laid on the interface agent layer 2. Due to the good adhesion and fast drying speed of the microcrystalline thermal insulation mortar self-leveling layer, a silica sol mortar self-leveling layer with a thickness of 20mm can be quickly applied after the microcrystalline thermal insulation mortar self-leveling layer is applied. Both are applied by pumping, resulting in excellent leveling properties and a good flatness. The overall effect after construction is outstanding, effectively solving common drawbacks. Moreover, the microcrystalline thermal insulation mortar self-leveling layer has characteristics such as high strength, good thermal insulation and sound insulation performance, and low water absorption rate, making the overall construction more convenient. People can walk on it 4-6 hours after construction.

[0084] Example 5

[0085] Based on embodiments 1-3, this embodiment introduces the structure of a self-leveling floor using sound insulation boards and silica sol mortar self-leveling layers.

[0086] The similarities to the above embodiments will not be repeated.

[0087] During this construction process, sound insulation boards are laid under a self-leveling layer of silica sol mortar. The thickness of the sound insulation boards is 8-20mm, and the thickness of the self-leveling layer is 30mm. The construction speed is 1000-1200㎡ / day. Compared to the traditional method of using fine aggregate concrete combined with sound insulation boards, which requires manual leveling and cannot guarantee flatness, and because the insulation boards are on a soft base, cracking and hollowing are unavoidable, the use of self-leveling silica sol mortar effectively solves these problems.

[0088] Table 1 below shows a quality comparison between silica sol mortar and fine aggregate concrete.

[0089] Table 1. Quality Comparison of Silica Sol Mortar and Fine Aggregate Concrete

[0090]

[0091] Table 2 below shows a comprehensive comparison of silica sol mortar and fine aggregate concrete.

[0092]

[0093] As can be seen from the table comparison, compared with fine stone concrete flooring, the silica sol mortar self-leveling flooring used in this invention solves the problems of sanding, hollowing, unevenness, and cracking that occur after existing flooring is laid, greatly saving costs and providing high flooring quality.

[0094] The structure using silica sol mortar self-leveling layer and sound insulation board has a much better overall construction effect than traditional construction methods, and silica sol self-leveling mortar has a significant effect compared to fine stone concrete. Moreover, people can walk on it 4-6 hours after construction.

[0095] The above description is merely a preferred embodiment of this application and does not limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any changes, modifications, substitutions, integrations, and parameter alterations to these embodiments within the spirit and principles of this application, achieved through conventional substitutions or by realizing the same function without departing from the principles and spirit of this application, fall within the scope of protection of this application.

Claims

1. A method for the construction of a self-leveling structure of a silica sol mortar for floors, characterized in that, The structure comprises a concrete base layer (1), an interface agent layer (2), a silica sol mortar self-leveling layer (3), and a microcrystalline thermal insulation mortar self-leveling layer or a sound insulation thermal insulation board. The interface agent layer (2) is arranged on the upper portion of the concrete base layer (1). The silica sol mortar self-leveling layer (3) is arranged on the upper portion of the interface agent layer (2); and the microcrystalline thermal insulation mortar self-leveling layer or the sound insulation thermal insulation board is arranged below the silica sol mortar self-leveling layer (3) and above the interface agent layer (2). A high-energy silica sol mortar self-leveling color penetrating agent layer (4) is further arranged on the upper portion of the silica sol mortar self-leveling layer (3). The interface agent layer (2) has a double-layer structure, comprising a first interface agent layer (21) and a second interface agent layer (22); the first interface agent layer (21) is arranged between the second interface agent layer (22) and the concrete base layer (1); and the second interface agent layer (22) is arranged between the first interface agent layer (21) and the silica sol mortar self-leveling layer (3). The construction method comprises the following steps: S1, checking whether there is cracking or hollowing phenomenon on the surface of the concrete base layer (1); and polishing the surface of the concrete base layer (1) to remove surface dust; S2, marking the position of the cracking or hollowing phenomenon on the surface of the concrete base layer (1) and repairing the same; S3, brushing the interface agent on the surface of the concrete base layer (1) after the treatment in steps S1-S2 to form the interface agent layer (2); S4, after the interface agent layer (2) is dried, laying the microcrystalline thermal insulation mortar self-leveling layer with a thickness of 20 mm or the sound insulation thermal insulation board with a thickness of 8-20 mm on the interface agent layer (2), and then pouring and laying the silica sol mortar self-leveling layer on the microcrystalline thermal insulation mortar self-leveling layer or the sound insulation thermal insulation board to form the silica sol mortar self-leveling layer (3); S5, curing the surface layer, and polishing the surface of the silica sol mortar self-leveling layer (3) after drying; S6, performing the closed treatment of the high-energy silica sol mortar self-leveling color penetrating agent layer (4) on the silica sol mortar self-leveling layer (3) after drying.

2. A method of installing a self-leveling structure of silica sol mortar for a floor according to claim 1, wherein The thickness of the silica sol mortar self-leveling layer (3) is 10-60 mm.

3. A method of installing a self-leveling structure of silica sol mortar for a floor according to claim 2, wherein The thickness of the high-energy silica sol mortar self-leveling color penetrating agent layer (4) is 2-4 mm.

4. The construction method of the silica sol mortar self-leveling structure for the ground according to claim 3, wherein the ground cracking or hollowing portion of the concrete base layer (1) is locally cut in step S2, and the first-time leveling repair is performed by using the silica sol mortar self-leveling.

5. A method of installing a self-leveling structure of silica sol mortar for a floor according to claim 4, wherein In step S3, the first pass of the interface agent is uniformly brushed on the surface of the concrete base layer (1) by using a brown brush, so that the interface agent is fully penetrated into the base layer concrete. The second pass of the interface agent is uniformly brushed on the first interface agent layer (21) after drying.

6. A method of installing a self-leveling structure of silica sol mortar for a floor according to claim 5, wherein In the curing step in step S5, the silica sol mortar self-leveling layer can be walked on after natural curing for 4-6 hours under the condition that the room temperature is +20℃.

7. A method of installing a self-leveling structure of silica sol mortar for a floor according to claim 6, wherein After step S6, the expansion joint is cut by using a concrete cutting machine, the backer rod is pressed in after cleaning, and the elastic joint sealing glue is closed.

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