Concrete optimization testing device

Abstract

The utility model provides a concrete optimization testing device. The concrete optimization testing device comprises a bottom plate; the supporting rod body is fixedly connected with the bottom plate; the positioning rod is connected with the supporting rod body, the positioning rod is perpendicularly arranged relative to the supporting rod body, and the positioning rod is parallel to the bottom plate; the detection assemblies are fixedly connected with the positioning rod, the number of the detection assemblies is multiple, and the multiple detection assemblies are located on the positioning rod and evenly arranged at intervals; wherein a concrete block is placed on the bottom plate, and the other end of the concrete block is in contact with the detection assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete detection, in particular to a concrete optimization testing device. Background Art

[0002] With the development of the construction field, concrete, as a widely used material in the construction field, has a key performance indicator of volume stability. After setting and hardening, concrete may undergo overall or partial volume changes due to factors such as temperature, humidity, load, and carbon dioxide in the atmosphere. Autogenous shrinkage and drying shrinkage are the main shrinkage deformations. Among them, drying shrinkage is the shrinkage caused by the evaporation of internal moisture due to the lower humidity of the external environment than the internal humidity of the concrete; autogenous shrinkage refers to the volume change of concrete itself caused by cement hydration reaction under sealed conditions. When the shrinkage deformation is large and the resistance of concrete is small, the concrete matrix is ​​prone to cracking and damage, leading to the invasion of harmful substances and accelerating the deterioration of concrete and corrosion of steel bars, thereby reducing the service life of the structure.

[0003] In the related art, concrete structure design tends to adopt low water-cement ratio and high content of cementitious materials, combined with the addition of various fine aggregates, to achieve the most compact stacking effect. The use of this high-performance concrete helps to reduce the size of components and reduce their own weight, improve the bearing capacity and seawater corrosion resistance of the structure. However, due to the addition of less water in the matrix, a large number of semi-saturated capillaries are formed after hydration, and the capillary tension acting on the matrix skeleton will cause greater shrinkage deformation. With the increase of concrete strength, the shrinkage cracking problem becomes more serious. The shrinkage deformation of ultra-high performance concrete is even 5 to 15 times that of ordinary concrete, and its volume stability is a significant problem.

[0004] Among them, traditional contact testing devices are usually used to test smaller components. During the experiment, the size of the concrete specimens is single. At the same time, in order to avoid testing errors, the test blocks need to be placed on the test frame for a long time. However, when a large number of test blocks need to be tested, more testing devices are required, which increases the economic burden.

[0005] It can be seen that how to simultaneously test the shrinkage and deformation characteristics of multiple groups of concrete of different sizes to reduce economic costs has become an urgent problem to be solved. Utility Model Content

[0006] The problem solved by the utility model is how to simultaneously test the shrinkage and deformation characteristics of multiple groups of concrete with different sizes to reduce economic costs.

[0007] In order to solve the above problems, the utility model provides a concrete optimization test device, comprising: a base plate; a support rod body, the support rod body is fixedly connected to the base plate; a positioning rod, the positioning rod is connected to the support rod body, and the positioning rod is vertically arranged relative to the support rod body, and the positioning rod is parallel to the base plate; a detection component, the detection component is fixedly connected to the positioning rod, and a plurality of detection components are arranged, and the plurality of detection components are evenly spaced on the positioning rod; wherein a concrete block is placed on the base plate, and the other end of the concrete block is in contact with the detection component.

[0008] Compared with the prior art, the present solution can achieve the following effects: in a specific embodiment, the positioning rod is preferably a high-strength metal cylindrical rod body, the positioning rod is arranged through the supporting rod body, and the positioning rod is kept parallel to the base plate, and a plurality of detection components are arranged at intervals on the positioning rod, and the number of detection components is set by the experimenter according to the actual experimental situation. Under the premise of ensuring the control of variables, multiple groups of experiments can be set simultaneously through the concrete optimization test device provided in the utility model, thereby reducing the experimental cost expenditure.

[0009] In one embodiment of the utility model, the detection assembly includes: a dial gauge fixing bracket, the dial gauge fixing bracket is fixedly connected to the positioning rod; a dial gauge, the dial gauge is connected to the dial gauge fixing bracket, and one end of the dial gauge is in contact with the concrete block.

[0010] Compared with the prior art, the present solution can achieve the following effects: the micrometer used to detect the shrinkage characteristics of concrete makes the experimental results more accurate and reliable.

[0011] In one embodiment of the utility model, the micrometer fixing bracket includes: a connecting rod; a first connecting member, one end of the first connecting member is connected to the connecting rod, and the other end of the first connecting member is connected to the positioning rod; a second connecting member, one end of the second connecting member is connected to the connecting rod, and the other end of the second connecting member is connected to the micrometer.

[0012] Compared with the prior art, the present solution can achieve the following effects: strengthening the structural stability of the test device.

[0013] In an embodiment of the present invention, the first connecting member and the positioning rod are connected via a ring sleeve.

[0014] Compared with the prior art, the present solution can achieve the following effects: the first connecting member is connected to the positioning rod in a ring-shaped manner, which facilitates the movement of the first connecting member relative to the positioning rod.

[0015] In an embodiment of the present utility model, a fixing plate is sandwiched between the supporting rod and the bottom plate, and the supporting rod and the bottom plate are fixedly connected via the fixing plate.

[0016] Compared with the prior art, the present solution can achieve the following effects: the setting of the fixed plate body strengthens the fixed connection strength between the support rod body and the base plate.

[0017] In one embodiment of the present invention, the fixing plate is provided with a plurality of openings.

[0018] Compared with the prior art, the present solution can achieve the following effects: In a specific embodiment, the fixing plate body is provided with four openings for being fixed to the base plate with screws, thereby enhancing the stability and reliability of the concrete optimization test device.

[0019] In an embodiment of the present invention, a plurality of support rods are provided, and any two support rods are symmetrically arranged along the extension direction of the positioning rod.

[0020] Compared with the prior art, the present solution can achieve the following effects: providing the function of supporting and fixing the device structure.

[0021] In an embodiment of the utility model, a plurality of positioning holes are provided through the support rod body along the extension direction of the support rod body, the positioning holes are for the positioning rod to pass through, and the plurality of positioning holes are arranged at intervals along the extension direction of the support rod body.

[0022] Compared with the prior art, the present solution can achieve the following effects: the provision of multiple positioning holes allows the positioning rod to be inserted into positioning holes at different heights according to actual operating conditions, thereby adapting to specific experimental conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of the test device for concrete optimization;

[0024] Figure 2 It is a schematic diagram of the structure of the detection component;

[0025] Figure 3 It is a structural schematic diagram of a fixed plate;

[0026] Description of reference numerals:

[0027] 1. Concrete optimization test device; 2. Concrete block; 10. Bottom plate; 20. Support rod body; 21. Positioning hole; 30. Positioning rod; 40. Detection component; 41. Micrometer fixing bracket; 42. Micrometer; 51. Connecting rod; 52. First connecting piece; 53. Second connecting piece; 60. Fixed plate body; 61. Opening hole. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The utility model is further described in detail below with reference to the accompanying drawings:

[0033] Embodiment 1:

[0034] See also Figures 1 to 3 The present embodiment provides a concrete optimization test device 1, comprising: a base plate 10; a support rod body 20, the support rod body 20 is fixedly connected to the base plate 10; a positioning rod 30, the positioning rod 30 is connected to the support rod body 20, and the positioning rod 30 is vertically arranged relative to the support rod body 20, and the positioning rod 30 is arranged parallel to the base plate 10; a detection component 40, the detection component 40 is fixedly connected to the positioning rod 30, and a plurality of detection components 40 are arranged, and the plurality of detection components 40 are evenly spaced on the positioning rod 30; wherein a concrete block 2 is placed on the base plate 10, and the other end of the concrete block 2 is in contact with the detection component 40.

[0035] Among them, the bottom plate 10 is a base, which plays a certain role in fixing and supporting the concrete optimization test device 1. On the bottom plate 10, a support rod body 20 is fixedly arranged. The support rod body 20 is preferably a high-strength metal rod body with high supporting strength and not easy to deform. The bottom plate 10 is preferably a channel steel with a larger width and a smooth surface without burrs, which is convenient for placing the concrete blocks 2 and ensures that the concrete blocks 2 are on the same horizontal plane.

[0036] The positioning rod 30 is preferably a high-strength metal cylindrical rod body. The positioning rod 30 is set through the support rod body 20, and the positioning rod 30 is kept parallel to the bottom plate 10. A plurality of detection components 40 are arranged at intervals on the positioning rod 30. The number of detection components 40 is set according to the actual experimental situation of the experimenter. Preferably, four detection components 40 are evenly spaced on the positioning rod 30 in this embodiment. Then, the concrete optimization detection device in this embodiment can set four groups of experiments at one time. Among them, taking the study of the drying shrinkage characteristics of ultra-high performance concrete with different mix ratios as an example, the concrete shrinkage deformation research device of the above implementation case is used to carry out the following experimental process. The vertical displacement change of ultra-high performance concrete under the combined action of drying shrinkage and self-shrinkage after solidification is detected and displayed by the detection component 40. In order to further explore the relationship between ultra-high performance concrete with different water-binder ratios and shrinkage characteristics, four groups of experiments are set by the control variable method. It is particularly noted that the four groups of experiments all use the same concrete size type, and the other conditions are the same. Only the water-binder ratio is changed, and the remaining amount is controlled unchanged to explore the drying shrinkage change law of ultra-high performance concrete under different water-binder ratios in the experiment.

[0037] Furthermore, the detection assembly 40 includes: a dial gauge fixing bracket 41 , which is fixedly connected to the positioning rod 30 ; and a dial gauge 42 , which is connected to the dial gauge fixing bracket 41 , and one end of the dial gauge 42 is in contact with the concrete block 2 .

[0038] Specifically, the detection assembly 40 in this embodiment uses a micrometer 42 to detect the shrinkage characteristics of concrete, making the test results more accurate and reliable.

[0039] The dial gauge fixing bracket 41 includes: a connecting rod 51; a first connecting member 52, one end of the first connecting member 52 is connected to the connecting rod 51, and the other end of the first connecting member 52 is connected to the positioning rod 30; a second connecting member 53, one end of the second connecting member 53 is connected to the connecting rod 51, and the other end of the second connecting member 53 is connected to the dial gauge 42.

[0040] Specifically, the micrometer fixing bracket 41 is sunken relative to the positioning rod 30, and one end of the first connecting member 52 is movably connected to the positioning rod 30 to facilitate the movement and selection of the position of the micrometer fixing bracket 41. The connecting rod 51 is a cylindrical rod body to ensure the connection strength. The second connecting member 53 is connected to the connecting rod 51, and the second connecting member 53 is vertically arranged relative to the connecting rod 51.

[0041] The micrometer fixing bracket 41 is fixed on the positioning rod 30 and is used to test the vertical micro displacement after the concrete shrinkage deformation.

[0042] The first connecting member 52 is connected to the positioning rod 30 via a sleeve-type connection.

[0043] Preferably, the first connecting member 52 and the positioning rod 30 are connected in an annular sleeve manner, which facilitates the movement of the first connecting member 52 relative to the point rod, simplifies the movement of the micrometer fixing bracket 41, and ensures the stability and accuracy of the micrometer 42 in the experiment. At the same time, preferably, the second connecting member 53 and the connecting rod 51 are also connected in an annular sleeve manner, and the position of the second connecting member 53 relative to the connecting rod 51 can also be adjusted by rotating to adjust the position of the micrometer 42.

[0044] The micrometer 42 is inserted into the second connecting member 53 .

[0045] See Figure 1 and Figure 3 A fixing plate 60 is sandwiched between the support rod 20 and the bottom plate 10 , and the support rod 20 and the bottom plate 10 are fixedly connected through the fixing plate 60 .

[0046] The provision of the fixing plate body 60 strengthens the fixed connection strength between the supporting rod body 20 and the bottom plate 10 .

[0047] The fixing plate 60 defines a plurality of openings 61 .

[0048] The provision of multiple openings 61 further strengthens the connection stability between the fixed plate body 60 and the base plate 10. At the same time, preferably, the fixed plate body 60 in this embodiment is provided with four rows of eight screw holes of equal diameter arranged equidistantly, and the screw holes are namely the openings 61. The fixed plate body 60 is installed on the upper side of the base plate 10, and the fixed plate body 60 is a steel plate. The support rod body 20 and the fixed plate body 60 are combined by welding to improve the connection strength.

[0049] Furthermore, a plurality of support rods 20 are provided, and any two support rods 20 are symmetrically arranged along the extension direction of the positioning rod 30 .

[0050] Preferably, two support rods 20 are provided in this embodiment, and the same support rods 20 are made of channel steel to increase structural stability.

[0051] Along the extension direction of the support rod body 20 , a plurality of positioning holes 21 are opened through the support rod body 20 , and the positioning holes 21 are for the positioning rod 30 to pass through. The plurality of positioning holes 21 are arranged at intervals along the extension direction of the support rod body 20 .

[0052] Preferably, both ends of the positioning rod 30 are provided with external threads, and the positioning hole 21 is provided with internal threads. The positioning rod 30 is threadably connected to the support rod body 20 through the positioning hole 21 to facilitate the disassembly and replacement of the positioning rod 30 relative to the support rod body 20.

[0053] Therefore, the concrete optimization test device 1 in this embodiment has high efficiency and simple operation: and the device allows multiple groups of concrete to be tested at the same time, and the micro displacement changes are directly read through the micrometer 42, without the time-consuming separate measurement process in the traditional measurement method. This improves the experimental efficiency and simplifies the operation steps, thereby saving time and labor costs.

[0054] It has certain economical efficiency: compared with traditional devices, the cost of testing the same number of test blocks is lower, and it has higher economy and cost-effectiveness.

[0055] It is multifunctional and widely applicable. The concrete optimization test device 1 in this embodiment can not only study the shrinkage and deformation of concrete under different water-cement ratio conditions, but also can test concrete of different sizes.

[0056] Embodiment 2:

[0057] See Figures 1 to 3 In a specific practical operation, the welded fixing plate 60 and the supporting rod 20 are fixed on the bottom plate 10 with screws, the positioning rod 30 is rotated, the positioning rod 30 is kept in a horizontal position, and the four dial gauge 42 fixing frames are connected and fixed to the positioning rod 30 through the collar. Then, concrete of corresponding proportion is prepared, and after the concrete solidifies and hardens, it is sealed with a plastic film and placed on the bottom plate 10. After the four dial gauges 42 are zeroed, they are also fixed on the dial gauge 42 fixing frames to contact the four groups of concrete test blocks, and left to stand, waiting for the concrete to dry and shrink and deform.

[0058] Due to the large shrinkage deformation in the early stage, the readings on the micrometer 42 of each group were frequently observed and recorded in the first three days, and then the data can be tested at intervals of multiple days according to the actual situation. After the experiment, through theoretical analysis and actual investigation, the change law of concrete shrinkage characteristics with different water-binder ratios was obtained. The relationship between concrete shrinkage characteristics and time can be tested to further understand concrete shrinkage characteristics.

[0059] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A concrete optimization test device, It is characterized in that include: Bottom plate (10); A support rod body (20), wherein the support rod body (20) is fixedly connected to the base plate (10); A positioning rod (30), wherein the positioning rod (30) is connected to the supporting rod body (20), and the positioning rod (30) is vertically arranged relative to the supporting rod body (20), and the positioning rod (30) is parallel to the bottom plate (10); A detection component (40), the detection component (40) being fixedly connected to the positioning rod (30), and a plurality of the detection components (40) are provided, and the plurality of the detection components (40) are evenly spaced and arranged on the positioning rod (30); A concrete block (2) is placed on the bottom plate (10), and the other end of the concrete block (2) is in contact with the detection component (40).

2. The concrete optimization test device according to claim 1, It is characterized in that The detection component (40) comprises: A dial gauge fixing bracket (41), wherein the dial gauge fixing bracket (41) is fixedly connected to the positioning rod (30); A dial gauge (42), the dial gauge (42) is connected to the dial gauge fixing bracket (41), and one end of the dial gauge (42) is in contact with the concrete block (2).

3. The concrete optimization test device according to claim 2, It is characterized in that The micrometer fixing bracket (41) comprises: Connecting rod (51); A first connecting member (52), one end of the first connecting member (52) being connected to the connecting rod (51), and the other end of the first connecting member (52) being connected to the positioning rod (30); A second connecting member (53), one end of the second connecting member (53) is connected to the connecting rod (51), and the other end of the second connecting member (53) is connected to the dial gauge (42).

4. The concrete optimization test device according to claim 3, It is characterized in that The first connecting member (52) and the positioning rod (30) are connected via a sleeve-type connection.

5. The concrete optimization test device according to any one of claims 1 to 4, It is characterized in that A fixing plate body (60) is sandwiched between the support rod body (20) and the bottom plate (10), and the support rod body (20) and the bottom plate (10) are fixedly connected via the fixing plate body (60).

6. The concrete optimization test device according to claim 5, It is characterized in that The fixing plate body (60) is provided with a plurality of openings (61).

7. The concrete optimization test device according to any one of claims 1 to 4, It is characterized in that A plurality of the support rod bodies (20) are provided, and any two of the support rod bodies (20) are symmetrically arranged along the extension direction of the positioning rod (30).

8. The concrete optimization test device according to claim 6, It is characterized in that Along the extension direction of the support rod body (20), a plurality of positioning holes (21) are provided through the support rod body (20), the positioning holes (21) are used for the positioning rod (30) to pass through, and the plurality of positioning holes (21) are arranged at intervals along the extension direction of the support rod body (20).

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