A crack control device for mass concrete
By using a double-helix structure cooling pipe and a metal thermal conductive layer in large-volume concrete, the problems of small contact area and unreasonable layout of the cooling pipe were solved, achieving efficient temperature control, preventing cracks, and ensuring construction quality and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ARCHITECTURAL DESIGN INST FUKIEN PROV
- Filing Date
- 2025-06-27
- Publication Date
- 2026-06-02
AI Technical Summary
In existing technologies, large-volume concrete has low heat exchange efficiency and difficulty in effectively controlling temperature differences during the hardening process due to the small contact area between the cooling pipes and the concrete and the unreasonable layout. This makes it easy for cracks to form.
The cooling pipe design adopts a double-helix structure, with the inlet and return spiral sections arranged alternately to form a continuous and winding cooling water path, which increases the contact area with the concrete and improves the heat exchange effect and reduces the temperature difference through the metal thermal conductive layer.
It effectively prevents cracks from forming in large-volume concrete during the hardening process, improves heat exchange efficiency, reduces internal temperature differences, and ensures construction quality and safety.
Smart Images
Figure CN224313435U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction, specifically to a crack control device for large-volume concrete. Background Technology
[0002] Mass concrete refers to large-volume concrete structures with a minimum geometric dimension of 1 meter or more, or concrete that is expected to develop harmful cracks due to temperature changes and shrinkage caused by the hydration of cementitious materials. Because mass concrete is affected by the heat of hydration during hardening, its internal temperature rises significantly, easily causing structural shrinkage cracking, thus affecting the quality and durability of the concrete structure.
[0003] In existing technologies, the temperature control and crack prevention of large-volume concrete generally employs pre-embedded cooling pipes to cool the interior of the concrete through cold water circulation. However, traditional solutions typically use straight cooling water pipes, resulting in a small contact area between the pipes and the concrete, low heat exchange efficiency, and difficulty in effectively controlling the internal temperature of the concrete. Furthermore, the cooling pipes are mostly laid out in a straight line, causing the cooling water to gradually heat up during the heat exchange process, significantly weakening the cooling effect on the later sections of concrete. This leads to excessive temperature differences between different locations within the concrete, making it highly susceptible to cracking and affecting structural safety and construction quality. Utility Model Content
[0004] The purpose of this invention is to provide a crack control device for large-volume concrete, which has a good heat exchange effect and can effectively prevent cracks from forming in large-volume concrete during the hardening process.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A crack control device for large-volume concrete, comprising:
[0007] Circulating water tank;
[0008] The water pump is installed inside the circulating water tank;
[0009] Several cooling pipes are embedded in the concrete;
[0010] The cooling pipe includes an inlet spiral section, a return spiral section, and an end connection section.
[0011] The inlet spiral section and the return spiral section are staggered to form a double spiral structure that extends forward and backward, and the end connecting section connects the rear ends of the inlet spiral section and the return spiral section.
[0012] The front end of the inlet spiral section is connected to the water delivery end of the water pump, and the return spiral section is connected to the inner cavity of the circulating water tank to form a circulating cooling water path for cooling the inside of the concrete.
[0013] Compared with the prior art, the advantages of this utility model are:
[0014] 1. By staggering the inlet spiral section and the return spiral section, a double spiral structure is formed, which increases the contact area between the cooling pipe and the concrete, improves the heat exchange effect of the cooling pipe, reduces the hydration heat of the concrete, and thus effectively prevents cracking of large-volume concrete.
[0015] 2. By combining the end connection section and the double helix structure, the cooling pipe forms a continuous and bent cooling water path, avoiding the impact of the traditional straight-in and straight-out layout of the cooling pipe, which weakens the cooling effect on the concrete in the later stage. This reduces the temperature difference between the front and rear ends of the concrete structure, thereby effectively controlling the generation of cracks. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of an embodiment of a crack control device for large-volume concrete according to the present invention.
[0017] Figure 2 yes Figure 1 Structural perspective view;
[0018] Figure 3 This is a simplified structural diagram of the cooling pipe of this utility model;
[0019] Figure 4 yes Figure 3 Side view;
[0020] Figure 5 yes Figure 3 Enlarged view of a local structure.
[0021] Labeling Explanation: 1 Circulating water tank, 100 Top cover, 101 Drain outlet, 2 Water pump, 3 Cooling pipe, 31 Inlet spiral section, 32 Return spiral section, 33 End connection section, 300 Metal thermal conductive layer, 4 Concrete, 5 Diverter pipe, 6 Manifold, 7 Thermometer. Detailed Implementation
[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:
[0023] like Figure 1-5 The image shown is a schematic diagram of an embodiment of a crack control device for large-volume concrete provided by this utility model:
[0024] A crack control device for large-volume concrete, comprising:
[0025] Circulating water tank 1;
[0026] Water pump 2 is installed inside circulating water tank 1;
[0027] Several cooling pipes 3 are embedded in concrete 4;
[0028] The cooling pipe 3 includes an inlet spiral section 31, a return spiral section 32, and an end connection section 33.
[0029] The inlet spiral section 31 and the return spiral section 32 are staggered to form a double spiral structure extending forward and backward, and the end connecting section 33 is connected between the rear ends of the inlet spiral section 31 and the return spiral section 32.
[0030] The front end of the inlet spiral section 31 is connected to the water delivery end of the water pump 2, and the return spiral section 32 is connected to the inner cavity of the circulating water tank 1 to form a circulating cooling water path for cooling the inside of the concrete 4.
[0031] It also includes a diversion pipe 5 and a collection pipe 6; the front end of the diversion pipe 5 is connected to the water delivery end of the water pump 2, and the rear end of the diversion pipe 5 is connected to the front end of each water inlet spiral section 31. The front end of the collection pipe 6 is connected to the inner cavity of the circulating water tank 1, and the rear end of the collection pipe 6 is connected to the front end of each water return spiral section 32.
[0032] Several cooling pipes 3 are arranged in a row with left and right intervals. A thermometer 7 is provided between two adjacent cooling pipes 3. The detection end of the thermometer 7 extends into the concrete 4.
[0033] Preferably, the detection end of the thermometer 7 is located in the middle of the concrete 4. When the temperature of the middle of the concrete 4 detected by the thermometer 7 exceeds the preset threshold, ice water can be added to the circulating water tank 1 to achieve a rapid cooling effect.
[0034] The top opening of the circulating water tank 1 is provided with a top cover 100, and the outer wall of the circulating water tank 1 is provided with a drain outlet 101 that communicates with its inner cavity.
[0035] The inlet spiral section 31, the return spiral section 32, and the end connecting section 33 are integrally molded.
[0036] A metal thermally conductive layer 300 is provided on the outer wall of the cooling pipe 3.
[0037] Furthermore, the metal thermal conductive layer 300 is a copper foil thermal conductive layer or an aluminum foil thermal conductive layer wrapped around the outer peripheral wall of the cooling pipe 3.
[0038] It should be noted that after concrete 4 has fully hardened, that is, after most of the heat of hydration of concrete 4 has been released, the cavity of cooling pipe 3 is filled with cement grout.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A crack control device for large-volume concrete, characterized in that, include: Circulating water tank (1); Water pump (2) is installed inside circulating water tank (1); Several cooling pipes (3) are embedded in concrete (4); The cooling pipe (3) includes an inlet spiral section (31), a return spiral section (32), and an end connection section (33). The inlet spiral section (31) and the return spiral section (32) are staggered to form a double spiral structure extending forward and backward, and the end connecting section (33) is connected between the rear ends of the inlet spiral section (31) and the return spiral section (32); The front end of the water inlet spiral section (31) is connected to the water delivery end of the water pump (2), and the return spiral section (32) is connected to the inner cavity of the circulating water tank (1) to form a circulating cooling water path for cooling the inside of the concrete (4).
2. The crack control device for large-volume concrete according to claim 1, characterized in that: It also includes a diversion pipe (5) and a collection pipe (6); the front end of the diversion pipe (5) is connected to the water delivery end of the water pump (2), the rear end of the diversion pipe (5) is connected to the front end of each water inlet spiral section (31), the front end of the collection pipe (6) is connected to the inner cavity of the circulating water tank (1), and the rear end of the collection pipe (6) is connected to the front end of each water return spiral section (32).
3. The crack control device for large-volume concrete according to claim 1, characterized in that: Several cooling pipes (3) are arranged in a row with left and right intervals. A thermometer (7) is provided between two adjacent cooling pipes (3). The detection end of the thermometer (7) extends into the concrete (4).
4. The crack control device for large-volume concrete according to claim 1, characterized in that: The top opening of the circulating water tank (1) is provided with a top cover (100), and the outer wall of the circulating water tank (1) is provided with a drain outlet (101) that communicates with its inner cavity.
5. The crack control device for large-volume concrete according to any one of claims 1 to 4, characterized in that: The inlet spiral section (31), the return spiral section (32), and the end connecting section (33) are integrally molded.
6. The crack control device for large-volume concrete according to claim 5, characterized in that: A metal thermally conductive layer (300) is provided on the outer wall of the cooling pipe (3).