Basement waterproof and anti-condensation composite structure and preparation method thereof

Abstract

The invention provides a waterproof and anti-condensation composite structure for a basement and a preparation method of the waterproof and anti-condensation composite structure, and belongs to the technical field of waterproofing. The basement waterproof and anti-condensation composite structure comprises a negative pressure waterproof layer located on the outer side of a concrete layer, and the negative pressure waterproof layer is suitable for preventing liquid water molecules of the concrete layer from overflowing through the negative pressure waterproof layer; the anti-condensation and mildew-proof layer is located on the side, away from the concrete layer, of the negative pressure waterproof layer, and the anti-condensation and mildew-proof layer is suitable for preventing condensate water in a basement from being generated on the surface of the anti-condensation and mildew-proof layer so as to prevent the anti-condensation and mildew-proof layer from breeding mildew. The negative pressure waterproof layer of the waterproof and anti-condensation composite structure for the basement can effectively improve the impermeability and the self-repairing ability, the anti-condensation layer and the mildew-proof layer can achieve active anti-condensation, surface mildew is remarkably inhibited, and the waterproof and anti-condensation composite structure for the basement is good in waterproof and anti-condensation performance. By means of the waterproof and anti-condensation composite structure for the basement, the protection effect, structural durability and environmental comfort of an underground building can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waterproofing, and in particular to a basement waterproofing and dew prevention composite structure and a preparation method thereof. BACKGROUND

[0002] As an important part of a building, a basement is widely used in residential, commercial and industrial buildings, and bears multiple functions such as parking, storage, equipment placement and civil air defense. However, due to its long-term underground environment, it is easily affected by factors such as underground water, rainwater penetration and high air humidity, resulting in basement water seepage, moisture return and dew formation, which further causes wall and floor mold and peeling, and even endangers the structural durability and indoor use function. SUMMARY

[0003] Therefore, in order to at least partially solve the above-mentioned technical problems, the present application provides a basement waterproofing and dew prevention composite structure and a preparation method thereof.

[0004] According to an embodiment of one aspect of the present application, a basement waterproofing and dew prevention composite structure is provided, comprising:

[0005] a negative pressure waterproofing layer located on the outer side of the concrete layer, the negative pressure waterproofing layer being adapted to block liquid water molecules of the concrete layer from overflowing outside the negative pressure waterproofing layer; and a dew prevention and mildew prevention layer located on the side of the negative pressure waterproofing layer away from the concrete layer, the dew prevention and mildew prevention layer being adapted to prevent condensate water in the basement from generating on the surface of the dew prevention and mildew prevention layer, so as to prevent the dew prevention and mildew prevention layer from breeding mildew.

[0006] According to an embodiment of another aspect of the present application, a preparation method of a basement waterproofing and dew prevention composite structure is provided, comprising:

[0007] applying a negative pressure waterproofing slurry on the concrete layer to form a negative pressure waterproofing layer; and

[0008] applying a dew prevention and mildew prevention slurry on the negative pressure waterproofing layer to form a dew prevention and mildew prevention layer.

[0009] The basement waterproofing and dew prevention composite structure provided by the above-mentioned embodiments of the present application has the following advantages: the negative pressure waterproof layer adopts the water-permeable mastic with the cement-based permeable crystalline active masterbatch doped therein, which generates insoluble crystals in capillary pores and micro-cracks under water permeation activation conditions, forms deep densification, and has a self-repairing ability that can be triggered repeatedly, so that the waterproofing continuity and impermeability can be maintained when uneven settlement of the foundation or micro-cracks of the structure occur; the dew prevention and mildew prevention layer is a functional composite layer with aerogel doped therein and a porous adsorption structure, the aerogel significantly reduces the thermal conductivity, increases the temperature of the inner surface of the enclosure structure, expands the dew point safety margin, and weakens the condensation formation conditions from the source, which belongs to the active dew prevention path; the inherent porous network has the functions of reversible moisture absorption and water vapor redistribution (humidity peak clipping and time lag release), which can effectively reduce the risk of instantaneous super-dew point caused by short-time humidity fluctuation; through the cooperation of the two mechanisms of "thermal regulation and control + humidity buffering", the dew prevention and mildew prevention layer significantly reduces the surface dew area and shortens the dew duration, reduces the residence of condensate water film, thereby inhibiting the breeding and spread of mildew, and keeping the structure inside and surface in a dry and clean state for a long time. Compared with the existing rigid waterproofing or single thermal insulation dew prevention scheme, the present application realizes the integration of waterproofing, self-repairing, thermal insulation, dew prevention and mildew prevention in the same composite system, has few interfaces, has strong adaptability, can stably operate under the conditions of temperature and humidity fluctuation and external water pressure change, significantly reduces the maintenance frequency and material replacement demand, improves the durability and life cycle use benefit of the structure, and improves the environment quality of the underground space. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, but not limit the present application.

[0011] Figure 1 The cross-sectional schematic view of the basement waterproofing and dew prevention composite structure provided by the embodiments of the present application is shown in the figure.

[0012] Figure 2 The cross-sectional schematic view of the basement waterproofing and dew prevention composite structure provided by another embodiment of the present application is shown in the figure.

[0013] Figure 3 The flowchart of the preparation method of the basement waterproofing and dew prevention composite structure provided by the embodiments of the present application is shown in the figure.

[0014] Explanation of reference signs:

[0015] 1-concrete layer;

[0016] 2-negative pressure waterproof layer;

[0017] 3-dew prevention and mildew prevention layer;

[0018] 4-outer waterproof layer. DETAILED DESCRIPTION

[0019] To make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the embodiments and drawings. However, the present application can be implemented in different forms, and should not be interpreted as being limited to the embodiments presented herein. On the contrary, the embodiments are presented to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. In the drawings, the sizes and relative sizes of layers and regions can be exaggerated for clarity, and the same reference signs represent the same elements throughout.

[0020] The terms used herein are merely used to describe specific embodiments, and are not intended to limit the present application. The terms "include", "comprise" and the like used herein indicate the presence of the stated features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0021] Current basement waterproofing systems mainly rely on external waterproofing membranes, coating waterproofing materials or structural self-waterproofing designs. In long-term service, the following problems still exist: (1) Micro-cracks are generated due to foundation settlement, structural deformation, etc., which destroy the continuity of the waterproof layer and form water seepage channels. (2) The moisture-proof and mildew-proof measures lack initiative, and condensation and mildew often occur, which affects the use comfort and structural durability. (3) The functions are fragmented, and lack of integrated design. In related technologies, the "multi-layer superposition" structure is generally used, and the waterproofing, self-repairing, moisture-proofing, mildew-proofing and other functions are dispersed in multiple layers of materials. The multi-layer combined construction is complex, the interface bonding durability is insufficient, the function coupling is poor, and it is difficult to form a synergistic effect.

[0022] Therefore, the present application provides a basement waterproofing and condensation prevention composite structure that integrates multiple mechanisms and has waterproofing and anti-permeation, self-repairing capability and active thermal and humidity control performance. It not only can achieve stable waterproofing in areas with high crack risk, but also can effectively prevent condensation and mildew from the aspects of thermodynamics and humidity management, thereby improving the adaptability and long-term reliability of the overall system.

[0023] Figure 1 A cross-sectional schematic view of the basement waterproofing and condensation prevention composite structure provided by the embodiments of the present application is shown.

[0024] According to an exemplary embodiment of the present application, the present application provides a basement waterproofing and condensation prevention composite structure, as shown in Figure 1 , which comprises:

[0025] The negative pressure waterproof layer 2 is located outside the concrete layer 1, and is suitable for preventing liquid water molecules of the concrete layer 1 from overflowing outside the negative pressure waterproof layer 2.

[0026] The anti-condensation and mildew-proof layer 3 is located away from the concrete layer 1 of the negative pressure waterproof layer 2, and is suitable for preventing the condensate water in the basement from generating on the surface of the anti-condensation and mildew-proof layer 3, so as to prevent the anti-condensation and mildew-proof layer 3 from breeding mildew.

[0027] In the embodiment of the present application, the negative pressure waterproof layer 2 comprises cement, powder, quartz sand, cellulose ether and cement-based permeable crystalline active master batch.

[0028] In the embodiment of the present application, the mass ratio of the cement, powder, quartz sand, cellulose ether and cement-based permeable crystalline active master batch is (20-40):(2-15):(40-70):(0.01-0.5):(0.1-2), for example, 20:2:40:0.01:0.1, 30:2:40:0.1:2, 35:2:40:0.1:2, 35:2:63:0.1:1, 35:2:63:0.1:2, 40:15:70:0.5:2, but is not limited to the values mentioned above. If the mass ratio of the cement-based permeable crystalline active master batch is too large, the negative pressure waterproof layer is prone to cracking, and the cost is high. If the mass ratio is too small, the repair ability of the negative pressure waterproof layer to the cracks of the concrete layer is weakened.

[0029] In the embodiment of the present application, the thickness of the negative pressure waterproof layer 2 is 2mm-8mm, for example, 2mm, 3mm, 4mm, 5mm, 6mm or 8mm, but is not limited to the values mentioned above. If the thickness of the negative pressure waterproof layer 2 is too large, cracks are prone to occur, which affects the waterproof performance. If the thickness of the negative pressure waterproof layer 2 is too small, it is difficult to effectively achieve the waterproof function. By controlling the thickness of the negative pressure waterproof layer 2 to be 2mm-8mm, good waterproof performance can be achieved.

[0030] In the embodiment of the present application, the anti-condensation and mildew-proof layer 3 comprises anti-condensation mortar and aerogel. The aerogel is, for example, silica-based aerogel.

[0031] In the embodiment of the present application, the mass ratio of the anti-condensation mortar and aerogel is (5-50):1, for example, 5:1, 10:1, 20:1, 25:1, 30:1, 40:1 or 50:1, but is not limited to the values mentioned above. If the mass ratio of the anti-condensation mortar and aerogel is too large (for example, greater than 50:1), the thermal conductivity of the anti-condensation and mildew-proof layer 3 is too high, and the anti-condensation effect cannot be achieved. If the mass ratio of the anti-condensation mortar and aerogel is too small (for example, less than 5:1), the mechanical properties of the anti-condensation and mildew-proof layer are insufficient, and the cost is high. By controlling the mass ratio of the anti-condensation mortar and aerogel to be (5-50):1, the mechanical properties and anti-condensation effect can be considered.

[0032] In the embodiments of the present application, the thickness of the anti-condensation and mildew-proof layer is 5mm-20mm, for example, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 15mm, 20mm, but is not limited to the values. If the thickness of the anti-condensation and mildew-proof layer 3 is too large, cracks are prone to occur, affecting the anti-condensation performance; if the thickness of the anti-condensation and mildew-proof layer 3 is too small, it is difficult to effectively realize the anti-condensation function. By controlling the thickness of the anti-condensation and mildew-proof layer 3 to be 5mm-20mm, good anti-condensation and mildew-proof effect can be realized.

[0033] In some embodiments, referring to Figure 2 As shown in the figure, the inner side of the concrete layer 1 is further formed with an outer waterproof layer 4.

[0034] In the embodiments of the present application, by using a specific proportion of glue powder and graded quartz sand (quartz stone mesh number is 20-200 mesh, continuous grading), the glue powder forms a continuous bonding network in the cement paste, and the rigid skeleton formed by the graded quartz sand not only provides strength, but also forms a micron-level continuous pore channel. The channel allows water vapor molecules to pass through (vapor permeability), but can effectively block liquid water molecules, and is particularly suitable for solving the problem of negative pressure bulging of the concrete layer due to internal moisture overflow, which is not considered in traditional waterproof materials.

[0035] In the embodiments of the present application, the flexible sealing waterproof of the organic polymer (glue powder) is combined with the inorganic active waterproof of the permeable crystalline master batch. The negative pressure waterproof layer plays a first barrier role (physical waterproof), and the permeable crystalline active substance penetrates into the internal capillary pores of the concrete to react to form insoluble crystals, block the pores, and significantly improve the impermeability of the concrete body, realizing the double protection of'skin type' waterproof and 'internal medicine type' waterproof.

[0036] In the embodiments of the present application, the anti-condensation mortar with internal addition of aerogel is used, and by the physical adsorption and storage of condensed water based on the optimized porous structure of the anti-condensation mortar and the good thermal and humid regulation performance of the aerogel, the generation of wall surface condensed water is effectively reduced, and the breeding of mold is prevented.

[0037] Figure 3 The flowchart of the preparation method of the basement waterproof and anti-condensation composite structure provided in the embodiments of the present application.

[0038] According to an exemplary embodiment of the present application, the present application provides a preparation method of a basement waterproof and anti-condensation composite structure, referring to Figure 3 As shown in the figure, the method comprises operation S1-operation S2.

[0039] Operation S1, the negative pressure waterproof slurry is coated on the concrete layer to form a negative pressure waterproof layer.

[0040] In the embodiment of the present application, operation S1 comprises operations S11-S13.

[0041] In operation S11, the concrete layer is pretreated.

[0042] In the embodiment of the present application, the pretreatment of the concrete layer comprises: removing loose sand on the surface of the concrete layer, cleaning the surface of the concrete layer to ensure the firmness and cleanliness of the concrete layer; and thoroughly wetting the concrete layer with clean water, and then the subsequent construction can be performed after the concrete layer is wetted without obvious water. Alternatively, after removing loose sand on the surface of the concrete layer and cleaning the surface of the concrete layer, a permeable interface agent is brushed on the concrete layer, and then the subsequent construction can be performed.

[0043] In operation S12, the negative pressure waterproofing slurry is prepared.

[0044] In the embodiment of the present application, the preparation of the negative pressure waterproofing slurry comprises adding the first mixed powder into water to obtain the negative pressure waterproofing slurry.

[0045] In the embodiment of the present application, the first mixed powder comprises cement, glue powder, quartz sand, cellulose ether, and cement-based permeable crystalline active masterbatch. The mass ratio of the first mixed powder to water is 1:(0.18-0.22), for example, 1:0.18, 1:0.20, or 1:0.22, but is not limited to the values mentioned. If the mass ratio of the first mixed powder to water is too large, the material will not be uniformly dispersed, the material will have poor workability, and the bonding strength will be reduced. If the mass ratio of the first mixed powder to water is too small, the strength will be reduced, the coating will sag, and the impermeability will be insufficient.

[0046] In the embodiment of the present application, the first mixed powder is added into water, and an electric mixer (with a power not less than 1000 W) is used to stir for 3 minutes, stand for 2 minutes, and then stir for another 2 minutes, until the negative pressure waterproofing slurry is stirred into a uniform and lump-free state for standby.

[0047] In operation S13, the negative pressure waterproofing slurry is coated on the concrete layer to form a negative pressure waterproofing layer.

[0048] In the embodiment of the present application, the negative pressure waterproofing mortar is repeatedly applied on the concrete layer, and the thickness of each application is not less than 1.0 mm, and the thickness of the final negative pressure waterproofing layer is not less than 3 mm. After the first application is completely dry, the next application is performed.

[0049] In the embodiment of the present application, after the negative pressure waterproofing layer is formed, no curing is required, and the finished product can be protected from being damaged by external forces before it is completely hardened.

[0050] In operation S2, an anti-condensation and anti-mildew slurry is coated on the negative pressure waterproofing layer to form an anti-condensation and anti-mildew layer, and operation S2 comprises operations S21-S24.

[0051] In operation S21, the negative pressure waterproof layer is controlled to a preset verticality and flatness.

[0052] In the embodiment of the present application, before the anti-condensation and mildew slurry is coated on the negative pressure waterproof layer, the verticality and flatness of the negative pressure waterproof layer are ensured to meet the finishing acceptance requirements.

[0053] In operation S22, the anti-condensation and mildew slurry is prepared.

[0054] In the embodiment of the present application, the second mixed powder is added to water, and a low-speed stirrer is used to stir into a uniform and particle-free high paste. After standing for 3-5 min, the second mixed powder is stirred again for uniform use.

[0055] In the embodiment of the present application, the mass ratio of the second mixed powder to water is 1:(0.6-0.9), for example, 1:0.6, 1:0.7, 1:0.8, or 1:0.9, but is not limited to the values given. If the mass ratio of the second mixed powder to water is too large, the viscosity of the material will be too large, which cannot be constructed and the hydration is insufficient, resulting in insufficient product quality strength. If the mass ratio of the second mixed powder to water is too small, the material will be dripping.

[0056] In operation S23, the anti-condensation and mildew slurry is coated on the negative pressure waterproof layer to form an anti-condensation and mildew layer.

[0057] In the embodiment of the present application, the anti-condensation and mildew slurry is coated on the negative pressure waterproof layer in 2-3 times, each time with a thickness of 2 mm-3 mm, and the thickness of each time should not be less than 2 mm. The next time of coating should be performed after the previous time of coating is set, each layer should be firmly bonded, and the last time of coating should be smoothed and compacted. The thickness of the completed anti-condensation and mildew layer should meet the design thickness requirement and be not less than 5 mm. When the mortar is coated, continuous construction is preferred for each time of coating. When the construction is stopped, a stepped slope joint should be used at the joint, the distance from the joint to the inner and outer corners should be not less than 200 mm, and the joints of the upper and lower layers of plastering should be staggered by more than 300 mm. The joint should be operated in sequence according to the layer order, and the layers should be tightly overlapped. The inner and outer corner parts of the wall surface should be made into a circular arc shape and compacted.

[0058] In operation S24, the anti-condensation and mildew layer is watered and maintained.

[0059] In the embodiment of the present application, the temperature for maintenance is 10-35℃, and the humidity for maintenance is 50%-90%.

[0060] The basement waterproof, moisture-proof and mildew-proof structure provided by the application comprises a negative pressure waterproof layer, a dehumidification and mildew-proof layer and a concrete layer.

[0061] The basement waterproof, moisture-proof and mildew-proof structure provided by the application comprises a negative pressure waterproof layer, a dehumidification and mildew-proof layer and a concrete layer.

[0062] The basement waterproof, moisture-proof and mildew-proof structure provided by the application comprises a negative pressure waterproof layer, a dehumidification and mildew-proof layer and a concrete layer.

[0063] Embodiment 1

[0064] The negative pressure waterproof layer is formed on the outer side of the concrete layer.

[0065] Specifically, the first mixed powder and water are mixed in a mass ratio of 1:0.2 to obtain the negative pressure waterproof slurry, wherein the first mixed powder comprises cement, glue powder, quartz sand, cellulose ether and cement-based permeable crystalline active masterbatch, and the mass ratio of the cement, glue powder, quartz sand, cellulose ether and cement-based permeable crystalline active masterbatch is 35:10:63:0.1:2. The negative pressure waterproof slurry is coated on the concrete layer in multiple times to form the negative pressure waterproof layer with a thickness of 3 mm.

[0066] The dehumidification and mildew-proof layer is formed on the outer side of the negative pressure waterproof layer.

[0067] Specifically, the second mixed powder and water are mixed in a mass ratio of 1:0.7 to obtain the dehumidification and mildew-proof slurry, wherein the second mixed powder comprises dehumidification mortar and silicon-based aerogel, and the mass ratio of the dehumidification mortar and the silicon-based aerogel is 20:1. The dehumidification and mildew-proof slurry is coated on the negative pressure waterproof layer in multiple times to form the dehumidification and mildew-proof layer with a thickness of 5 mm.

[0068] The negative pressure waterproof layer prepared in Example 1 was subjected to bonding strength test (referring to 7.8 in JCT 984-2011), backwater surface impermeability test (referring to 6.5 in GB 23440-2009), and the test results are shown in Table 1.

[0069] Example 2

[0070] The basement waterproof and anti-condensation composite structure was prepared by the same method as in Example 1, except that the mass ratio of the first mixed powder to water was 1:0.18.

[0071] Example 3

[0072] The basement waterproof and anti-condensation composite structure was prepared by the same method as in Example 1, except that the mass ratio of the second mixed powder to water was 1:0.6.

[0073] Example 4

[0074] The basement waterproof and anti-condensation composite structure was prepared by the same method as in Example 1, except that the mass ratio of cement, rubber powder, quartz sand, cellulose ether, and cement-based permeable crystalline active masterbatch was 35:10:63:0.1:1.

[0075] Example 5

[0076] The basement waterproof and anti-condensation composite structure was prepared by the same method as in Example 1, except that the mass ratio of anti-condensation mortar to silicon-based aerogel was 50:1.

[0077] Comparative Example 1

[0078] The basement waterproof and anti-condensation composite structure was prepared by the same method as in Example 1, except that the mass ratio of the first mixed powder to water was 1:0.15.

[0079] Comparative Example 2

[0080] The basement waterproof and anti-condensation composite structure was prepared by the same method as in Example 1, except that the mass ratio of the second mixed powder to water was 1:0.5.

[0081] Comparative Example 3

[0082] The basement waterproof and anti-condensation composite structure was prepared by the same method as in Example 1, except that the mass ratio of cement, rubber powder, quartz sand, cellulose ether, and cement-based permeable crystalline active masterbatch was 35:10:63:0.1:0.

[0083] Comparative Example 4

[0084] The basement waterproof and anti-condensation composite structure was prepared by the same method as in Example 1, except that the mass ratio of the anti-condensation mortar to the silica-based aerogel was 60:1.

[0085] Comparative Example 5

[0086] A negative pressure waterproof layer was formed on the outer side of the concrete layer. Specifically, a cement-based capillary crystalline waterproof coating (product model: Oriental Yurui PCC-501) was mixed with water in a ratio of 1:0.3 to form a slurry, which was then applied to the concrete layer.

[0087] Comparative Example 6

[0088] A negative pressure waterproof layer was formed on the outer side of the concrete layer. Specifically, waterproof mortar (product model: Oriental Yurui Hua Sand WM200, product performance in accordance with JC / T 984-2011, mainly including cement, refined sand, fillers, polymer powder and other additives) was applied to the concrete layer.

[0089] Comparative Example 7

[0090] A negative pressure waterproof layer was formed on the outer side of the concrete layer. Specifically, a waterproof mortar (Oriental Yurui TDF polymer mildew-resistant waterproof mortar, mainly including cement, sand and polymer dry powder, waterproofing agent, additives) was applied to the concrete layer.

[0091] Comparative Example 8

[0092] A negative pressure waterproof layer was prepared by the same method as in Example 1, except that no anti-condensation and mildew-resistant layer was prepared.

[0093] Comparative Example 9

[0094] A negative pressure waterproof layer was prepared by the same method as in Example 1, except that the anti-condensation mortar was applied multiple times to the negative pressure waterproof layer to form an anti-condensation layer.

[0095] The structures obtained in Examples 1-5 and Comparative Examples 1-7 were tested for adhesive strength and water back permeability, and the test results are shown in Table 1.

[0096] The anti-condensation and mildew-resistant effects of the structures of Examples 1 and Comparative Examples 8-9 were tested. Specifically, one side of the prepared structure sample plate was placed in a low temperature (5°C) to simulate a cold wall, and the other side was continuously supplied with high temperature and high humidity air (30°C, RH 90%). The time when condensation water droplets appeared on the surface of the sample plate was observed and recorded, and the test results are shown in Table 2.

[0097] Table 1

[0098]

[0099] According to Table 1, compared with Comparative Example 1, the mass ratio of the first mixed powder to water in Example 1-2 is between 0.18-0.22, and the bonding strength and the water back surface impermeability of the basement waterproof and anti-condensation composite structure of Example 1-2 are improved.

[0100] Compared with Comparative Example 2, the mass ratio of the second mixed powder to water in Example 1 and Example 3 is between 1:(0.6-0.9), and the bonding strength and the water back surface impermeability of the basement waterproof and anti-condensation composite structure of Example 1 and Example 3 are improved.

[0101] Compared with Comparative Example 3, the first mixed powder of Example 1 and Example 4 is added with cement-based permeable crystalline active masterbatch in a specific ratio, and the bonding strength and the water back surface impermeability of the basement waterproof and anti-condensation composite structure of Example 1 and Example 4 are significantly improved.

[0102] Compared with Comparative Examples 5-7, the bonding strength and the water back surface impermeability of the negative pressure waterproof layer of Example 1 of the present application are significantly improved.

[0103] Table 2

[0104]

[0105] According to Table 2, it is most likely to condense and have the most mold spots without an anti-condensation and mold-proof layer; the condensation is delayed but there are still mold spots when only using the anti-condensation mortar without aerogel; after adding aerogel to the mortar, the mold resistance is significantly improved, only slight mold spots are seen at low dosage, and there are basically no mold spots after a slight improvement; after further increasing the dosage of aerogel and forming a composite anti-condensation and mold-proof layer with the negative pressure waterproof layer, the condensation is significantly delayed and there are no mold spots on the surface. Overall, it is shown that by forming an anti-condensation and mold-proof layer including aerogel on the side away from the concrete layer of the negative pressure waterproof layer, Example 1 of the present application can effectively prolong the condensation time and inhibit the growth of mold.

[0106] The ordinal numbers used in the specification and claims, such as "first", "second", "third", etc., are used to modify the corresponding elements and do not mean that the elements have any ordinal number or represent the order of one element relative to another element or the order of the manufacturing method. The ordinal numbers are used only to clearly distinguish an element with a certain name from another element with the same name.

[0107] The above specific embodiments further illustrate the purpose, technical solutions and advantages of the present application. It should be understood that the above description is only for specific embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A basement waterproofing and condensation prevention composite structure, characterized by, The application relates to a waterproof layer for a basement, which comprises: a negative pressure waterproof layer (2) located on the outer side of a concrete layer (1), wherein the negative pressure waterproof layer is suitable for preventing liquid water molecules of the concrete layer (1) from overflowing outside the negative pressure waterproof layer (2); and a dew-proof and mildew-proof layer (3) located on the side of the negative pressure waterproof layer (2) far away from the concrete layer (1), wherein the dew-proof and mildew-proof layer (3) is suitable for preventing condensate water in the basement from generating on the surface of the dew-proof and mildew-proof layer (3) to prevent the dew-proof and mildew-proof layer (3) from breeding mildew. The material of the negative pressure waterproof layer (2) comprises cement, glue powder, quartz sand, cellulose ether and cement-based permeable crystalline active masterbatch.

2. The basement waterproofing and anti-condensation composite structure of claim 1, wherein, The mass ratio of the cement, the glue powder, the quartz sand, the cellulose ether and the cement-based permeable crystalline active masterbatch is (20-40):(2-15):(40-70):(0.01-0.5):(0.1-2).

3. The basement waterproofing and anti-condensation composite structure of claim 2, wherein, The negative pressure waterproof layer (2) has pores with a pore size of microns.

4. The basement waterproofing and anti-condensation composite structure of claim 1, wherein, Preferably, the thickness of the negative pressure waterproof layer (2) is 2mm-8mm. The material of the dew-proof and mildew-proof layer (3) comprises dew-proof mortar and aerogel.

5. The basement waterproofing and anti-condensation composite structure of claim 1, wherein, The mass ratio of the dew-proof mortar and the aerogel is (5-50):

1.

6. The basement waterproofing and anti-condensation composite structure of claim 5, wherein, The thickness of the dew-proof and mildew-proof layer (3) is 5mm-20mm.

7. The basement waterproofing and anti-condensation composite structure of claim 1, wherein, The application relates to a method for manufacturing a waterproof layer for a basement, which comprises:

8. A method of producing the basement waterproofing and dew preventing composite structure according to any one of claims 1 to 7, characterized by, applying negative pressure waterproof slurry on a concrete layer to form a negative pressure waterproof layer; and applying dew-proof and mildew-proof slurry on the negative pressure waterproof layer to form a dew-proof and mildew-proof layer. The negative pressure waterproof slurry is prepared by: adding first mixed powder into water to obtain the negative pressure waterproof slurry.

9. The production method according to claim 8, characterized by, The first mixed powder comprises cement, glue powder, quartz sand, cellulose ether and cement-based permeable crystalline active masterbatch, and the mass ratio of the first mixed powder and water is 1:(0.18-0.22). The dew-proof and mildew-proof slurry is prepared by: adding second mixed powder into water to obtain the dew-proof and mildew-proof slurry.

10. The preparation method according to claim 8, characterized in that, The second mixed powder comprises dew-proof mortar and aerogel, and the mass ratio of the second mixed powder and water is 1:(0.6-0.9). ​ ​

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