Anti-crack waterproof concrete roof

Abstract

The utility model discloses an anti-crack waterproof concrete roof which comprises a concrete layer, a waterproof layer and a waterproof layer. The first waterproof layer is arranged in the holes, and the thickness of the first waterproof layer ranges from 30 mm to 50 mm; the second waterproof layer is arranged on one side of the concrete layer, and the thickness of the second waterproof layer ranges from 1.5 mm to 2.5 mm. The first waterproof layer is arranged in the pores of the concrete layer, so that the first waterproof layer is an embedded waterproof layer, and the problem that the waterproof layer loses efficacy due to the fact that the waterproof layer and the concrete layer are not firmly bonded is solved. The first waterproof layer and the second waterproof layer are arranged at the same time, so that the concrete roof has better anti-cracking and waterproof effects.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering and construction, in particular to a crack-resistant and waterproof concrete roof. Background Art

[0002] Civil engineering projects are dominated by concrete structures. Concrete structures inevitably have cracks due to internal and external factors, especially leakage on the building roof, which seriously affects the normal use of the building. Common types of cracks include shrinkage cracks, temperature cracks, structural stress cracks, etc. Once cracks appear in concrete, water, carbon dioxide, harmful ions, etc. will invade from the cracks, which will cause steel corrosion on the one hand and further deteriorate the concrete structure on the other hand. Therefore, concrete cracking must be controlled. Common means of controlling cracks include using admixtures with low hydration heat to replace part of the cement, using retarders appropriately, reducing the amount of cement while ensuring the design strength of the concrete, or adding fibers or appropriate expansion agents.

[0003] The technical problems existing in the conventional technologies mentioned above are as follows: ① Regarding the method of adding low hydration heat admixtures to replace part of the cement, the current specifications and some projects have restrictions on the proportion of admixtures added, and this method has a limited effect on reducing concrete cracking; ② The method of using retarders will extend the setting time of the concrete slurry to varying degrees. Before the newly poured concrete sets, the upper surface of the concrete component exposed to the air shrinks due to rapid water loss, which is prone to form plastic cracks. At the same time, most of the existing retarders can only delay the time when the exothermic peak occurs, but cannot reduce the peak value. , and even the exothermic peak of many concretes with retarders added is higher than that of concrete without retarders, resulting in a larger temperature difference between the inside and outside of the concrete, which makes it easier to form temperature cracks; ③ The means of reducing the amount of cement are also limited by the minimum cement amount in the specifications and standards, and the effect on reducing concrete cracking is still relatively limited; ④ Although the addition of fibers can improve the tensile properties of concrete to inhibit the formation of initial cracks, this part of the tensile stress still exists inside the concrete, and the fibers are mostly organic components, and the concrete is a strongly alkaline environment. The fiber performance will gradually decline during long-term use and will still cause concrete cracking.

[0004] Therefore, how to provide a crack-resistant and waterproof concrete roof is still a technical problem that needs to be solved. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide a crack-resistant and waterproof concrete roof, which can improve the durability of the concrete structure itself and save a large amount of material and labor costs required for subsequent maintenance and repair of water leakage caused by concrete cracks.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a crack-resistant waterproof concrete roof, comprising:

[0007] A concrete layer, wherein the concrete layer has pores therein;

[0008] A first waterproof layer, the first waterproof layer is arranged in the pore, and the thickness of the first waterproof layer is 30 to 50 mm;

[0009] A second waterproof layer, wherein the second waterproof layer is arranged on one side of the concrete layer, and the thickness of the second waterproof layer is 1.5-2.5 mm.

[0010] Furthermore, the second waterproof layer includes waterproof layer 1, waterproof layer 2 and waterproof layer 3 which are connected in sequence, the thickness of waterproof layer 1 is 1-1.5 mm, the thickness of waterproof layer 2 is 0.4-0.8 mm, and the thickness of waterproof layer 3 is 0.1-0.3 mm.

[0011] Furthermore, the thickness of the waterproof layer 1 is 1.2 mm, the thickness of the waterproof layer 2 is 0.6 mm, and the thickness of the waterproof layer 3 is 0.2 mm.

[0012] Furthermore, the material of the waterproof layer one is X13 high-strength anti-alkali repair agent, the material of the waterproof layer two is X14 high-molecular anti-alkali fiber, and the material of the waterproof layer three is X13 high-strength anti-alkali repair agent.

[0013] Furthermore, it also includes a first thermal insulation layer and a second thermal insulation layer, the first thermal insulation layer is arranged between the first waterproof layer and the second waterproof layer, and the first thermal insulation layer is arranged in contact with the first waterproof layer, and the second thermal insulation layer is arranged in contact with the second waterproof layer.

[0014] Furthermore, it also includes a slope layer and a leveling layer. The slope layer is arranged above the first thermal insulation layer and is arranged in close contact with the first thermal insulation layer. The leveling layer is arranged in close contact with the slope layer.

[0015] Furthermore, it also includes a surface layer, which is arranged above the second thermal insulation layer and is arranged in contact with the second thermal insulation layer.

[0016] Furthermore, the material of the first waterproof layer is a water-based penetrating crystalline waterproofing agent.

[0017] Furthermore, the concrete layer material includes concrete and waterproof material, and the weight ratio of the waterproof material to concrete is 1%-2%. By adding the waterproof material into the concrete layer, the concrete layer itself has a waterproof function.

[0018] Furthermore, the waterproof material is a self-compacting temperature-suppressing and crack-resistant composite waterproof material, which is composed of 80% self-compacting temperature-suppressing and crack-resistant material and 20% high-strength alkali-resistant fiber. The temperature-suppressing component in the waterproof material can effectively reduce the hydration heat release peak value while delaying the setting time to a very low degree, effectively reducing the generation of temperature cracks. At the same time, the material is supplemented by alkali-resistant high-strength fiber, which has the function of inhibiting plastic cracks, and achieves the effect of self-waterproofing of the concrete layer under the joint action.

[0019] The beneficial effects of the utility model are:

[0020] 1) By arranging the first waterproof layer in the pores of the concrete layer, the first waterproof layer is made into an "embedded" waterproof layer, and there is no problem of failure of the waterproof layer due to the loose bonding between the waterproof layer and the concrete layer.

[0021] 2) Water-based penetrating crystalline waterproofing agent is an inorganic material that can achieve an effective period as long as the life of the structure and provide long-term waterproofing.

[0022] 3) The second waterproof layer is a composite waterproof layer that combines rigidity and flexibility. The X13 high-strength anti-alkali repair agent has the characteristics of high strength and high adhesion. It can firmly bond the X14 polymer anti-alkali fiber to the base surface. At the same time, the high strength can provide effective protection for the X14 polymer anti-alkali fiber. At the same time, the X14 polymer anti-alkali fiber has good impermeability and tensile resistance. While ensuring the waterproof and impermeability of the second waterproof layer, it can also adapt to the settlement, deformation and cracking of the structural layer, ensuring the long-term effectiveness of the second waterproof layer.

[0023] 4) By setting waterproof materials in the concrete layer, the main structural concrete layer of the concrete roof has a waterproof function. At the same time, by setting the first waterproof layer and the second waterproof layer, the concrete roof has a triple waterproof effect (concrete layer, first waterproof layer and second waterproof layer), ensuring that the concrete roof has better anti-cracking and waterproof effects, and solving the problem of repeated leakage in traditional roof waterproofing methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic diagram of a concrete roof according to an embodiment of the utility model;

[0027] Figure 2 for Figure 1 A partial enlarged view of .

[0028] In the figure: 1. concrete layer; 11. pores; 2. first waterproof layer; 3. first thermal insulation layer; 4. slope layer; 5. leveling layer; 6. second waterproof layer; 61. waterproof layer one; 62. waterproof layer two; 63. waterproof layer three; 7. second thermal insulation layer; 8. surface layer. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0030] See attached Figure 1 and attached Figure 2 As shown, a crack-resistant waterproof concrete roof in this embodiment includes a concrete layer 1, and the material of the concrete layer 1 includes a waterproof material and concrete, and the weight ratio of the waterproof material to the concrete is 1%-2%. The waterproof material is a self-compacting temperature-suppressing and crack-resistant composite waterproof material, and the self-compacting temperature-suppressing and crack-resistant composite waterproof material is composited by 80% self-compacting temperature-suppressing and crack-resistant material and 20% high-strength alkali-resistant fiber. The temperature-suppressing component in the material will effectively and significantly reduce the peak value of hydration heat release while delaying the setting time to a very low degree, effectively reducing the generation of temperature cracks. At the same time, this material is supplemented by alkali-resistant high-strength fiber, which has the effect of inhibiting plastic cracks, and achieves the effect of concrete self-waterproofing under the joint action. The waterproof material is produced by Suzhou Jiagusi New Material Technology Co., Ltd.

[0031] The concrete layer 1 has pores 11 inside, and the first waterproof layer 2 is arranged in the pores 11. The thickness of the first waterproof layer 2 is 30 to 50 mm; the material of the first waterproof layer 2 is a water-based penetrating crystalline waterproofing agent. The water-based penetrating crystalline waterproofing agent can penetrate and react when applied to the surface of concrete. Unlike the "skin-type" waterproofing layer, this process is an "embedded" waterproofing layer. There is no problem of failure of the waterproofing layer due to weak bonding. At the same time, the water-based penetrating crystalline waterproofing agent is an inorganic material that can achieve a validity period of the same life as the structure and is long-lasting waterproof. The water-based penetrating crystalline waterproofing agent is produced by Suzhou Jiagusi New Material Technology Co., Ltd.

[0032] In some embodiments, the first thermal insulation layer 3, the slope layer 4, the leveling layer 5 and the second waterproof layer 6 are sequentially arranged on the upper surface of the first waterproof layer 2, and the thickness of the second waterproof layer 6 is 1.5-2.5 mm. The second waterproof layer 6 includes a waterproof layer 1 61, a waterproof layer 2 62 and a waterproof layer 3 63 connected in sequence, and the thickness of the waterproof layer 1 61 is 1-1.5 mm, the thickness of the waterproof layer 2 62 is 0.4-0.8 mm, and the thickness of the waterproof layer 3 63 is 0.1-0.3 mm. Preferably, the thickness of the waterproof layer 1 61 is 1.2 mm, the thickness of the waterproof layer 2 62 is 0.6 mm, and the thickness of the waterproof layer 3 63 is 0.2 mm.

[0033] The material of the waterproof layer 1 61 is X13 high-strength anti-alkali repair agent, the material of the waterproof layer 2 62 is X14 high-molecular anti-alkali fiber, and the material of the waterproof layer 3 63 is X13 high-strength anti-alkali repair agent. The second waterproof layer 6 is a composite waterproof layer that combines rigidity and flexibility. The X13 high-strength anti-alkali repair agent has the characteristics of high strength and high bonding force, and can firmly bond the X14 high-molecular anti-alkali fiber to the leveling layer 5. At the same time, the high strength can provide effective protection for the X14 high-molecular anti-alkali fiber. At the same time, the X14 high-molecular anti-alkali fiber has good impermeability and tensile strength. While ensuring that the composite waterproof layer is waterproof and impermeable, it can also adapt to the settlement, deformation, and cracking of the structural layer, ensuring that the second waterproof layer 6 is long-lasting and effective.

[0034] In some embodiments, a second thermal insulation layer 7 and a surface layer 8 are sequentially disposed on the upper surface of the second waterproof layer 6, and the second thermal insulation layer 7 is disposed in close contact with the second waterproof layer 6. The surface layer 8 is disposed above the second thermal insulation layer 7 and in close contact with the second thermal insulation layer 7.

[0035] Production process:

[0036] First, the roof concrete is poured to form a concrete layer 1. A self-compacting temperature-suppressing and anti-cracking composite waterproofing agent is added to the cast-in-place concrete at a weight of 1%-2% of the cementitious material per cubic meter of concrete. The thickness of the concrete is determined according to the engineering design requirements;

[0037] Secondly, spray the water-based penetrating crystal waterproofing agent twice on the hardened concrete surface, and the first waterproof layer 2 can be formed in the pores 11 of the concrete layer 1. The first waterproof layer 2 is prepared by a three-water two-liquid spraying method, that is, water-water-based penetrating crystal waterproofing agent-water-water-based penetrating crystal waterproofing agent-water spraying method, and the total amount of the water-based penetrating crystal waterproofing agent used for two times is 250mL / ㎡;

[0038] Then, according to the engineering design requirements, the first thermal insulation layer 3, the slope layer 4, and the leveling layer 5 are sequentially constructed on the upper surface of the first waterproof layer 2;

[0039] Then, a 2.0 mm thick second waterproof layer 6 is made on the leveling layer 5, wherein the thickness of the second waterproof layer 62 is 0.6 mm, and the thickness of the first waterproof layer 61 between the second waterproof layer 62 and the leveling layer 5 is 1.2 mm. The remaining X13 high-strength anti-alkali repair agent is evenly applied on the surface of X14 to form a third waterproof layer 63. The third waterproof layer 63 is sufficient to prevent X14 from being exposed, and the thickness of the third waterproof layer 63 is 0.2 mm.

[0040] Finally, the construction of the second insulation layer 7 and the surface layer 8 is completed according to the engineering design method.

[0041] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A crack-resistant and waterproof concrete roof, It is characterized in that include: A concrete layer (1), wherein the concrete layer (1) has pores (11) inside; A first waterproof layer (2), the first waterproof layer (2) being arranged in the pore (11), and the thickness of the first waterproof layer (2) being 30 to 50 mm; A second waterproof layer (6), wherein the second waterproof layer (6) is arranged on one side of the concrete layer (1), and the thickness of the second waterproof layer (6) is 1.5 to 2.5 mm.

2. A crack-resistant and waterproof concrete roof according to claim 1, It is characterized in that The second waterproof layer (6) comprises a waterproof layer 1 (61), a waterproof layer 2 (62) and a waterproof layer 3 (63) which are connected in sequence, wherein the thickness of the waterproof layer 1 (61) is 1 to 1.5 mm, the thickness of the waterproof layer 2 (62) is 0.4 to 0.8 mm, and the thickness of the waterproof layer 3 (63) is 0.1 to 0.3 mm.

3. A crack-resistant and waterproof concrete roof according to claim 2, It is characterized in that The thickness of the waterproof layer 1 (61) is 1.2 mm, the thickness of the waterproof layer 2 (62) is 0.6 mm, and the thickness of the waterproof layer 3 (63) is 0.2 mm.

4. The crack-resistant and waterproof concrete roof according to claim 2, It is characterized in that The material of the waterproof layer 1 (61) is X13 high-strength anti-alkali repair agent, the material of the waterproof layer 2 (62) is X14 high-molecular anti-alkali fiber, and the material of the waterproof layer 3 (63) is X13 high-strength anti-alkali repair agent.

5. The crack-resistant and waterproof concrete roof according to claim 1, It is characterized in that It also comprises a first thermal insulation layer (3) and a second thermal insulation layer (7), wherein the first thermal insulation layer (3) is arranged between the first waterproof layer (2) and the second waterproof layer (6), and the first thermal insulation layer (3) is arranged in contact with the first waterproof layer (2), and the second thermal insulation layer (7) is arranged in contact with the second waterproof layer (6).

6. The crack-resistant and waterproof concrete roof according to claim 5, It is characterized in that It also comprises a slope layer (4) and a leveling layer (5), wherein the slope layer (4) is arranged above the first thermal insulation layer (3) and is arranged in close contact with the first thermal insulation layer (3), and the leveling layer (5) is arranged in close contact with the slope layer (4).

7. The crack-resistant and waterproof concrete roof according to claim 5, It is characterized in that It also comprises a surface layer (8), wherein the surface layer (8) is arranged above the second thermal insulation layer (7) and is arranged in contact with the second thermal insulation layer (7).

8. A crack-resistant and waterproof concrete roof according to any one of claims 1 to 7, It is characterized in that The material of the first waterproof layer (2) is a water-based penetrating crystalline waterproofing agent.

Images