Novel concrete alkalinity testing device

Abstract

The utility model relates to the technical field of alkali activity measurement, and provides a novel concrete alkalinity testing device which comprises a fixed base, a test piece placing table, a protective sleeve and a measuring table, the test piece placing table and the protective sleeve are arranged on the fixed base, the protective sleeve is sleeved outside the test piece placing table, and the measuring table is arranged at the top of the protective sleeve. A liquid sprayer and a white light source are further arranged on the protective sleeve, the white light source is arranged at the upper end of the side wall of the protective sleeve, the liquid sprayer is arranged at the lower end of the side wall of the protective sleeve, and an observation window is further arranged on the side wall of the protective sleeve. When the device is used for testing the alkalinity of the concrete, the steps are simple, the operation is convenient, the observation is visual, the flexibility is strong, and the test result error is small.

Description

Technical Field

[0001] The utility model relates to the technical field of alkali activity measurement, in particular to a novel concrete alkalinity testing device. Background Art

[0002] With the rapid development of society and the rise of the construction industry, the inspection and measurement of building materials plays an important role in ensuring the quality of construction, and has a significant impact on important factors of the entire engineering construction, such as the quality grade of the building and the safety factor of the building.

[0003] At present, the construction industry measures the alkali activity of concrete by using macroscopic tests, which are carried out by testing the expansion of concrete. The existing devices have many steps and complex operations when measuring the alkali activity of concrete. There are problems such as non-intuitive observation and lack of flexibility, which easily lead to errors in the test results.

[0004] Therefore, in view of the above problems, a new concrete alkalinity testing device is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and develops a novel concrete alkalinity testing device. The utility model has the advantages of intuitiveness, true reliability, simple operation, high flexibility and the like.

[0006] The technical solution for solving the technical problem of the utility model is as follows: the utility model provides a novel concrete alkalinity testing device, comprising a fixed base, a specimen placing table, a protective sleeve and a measuring table. The specimen placing table and the protective sleeve are arranged on the fixed base, the protective sleeve is arranged outside the specimen placing table, the measuring table is arranged on the top of the protective sleeve, a liquid sprayer and a white light source are also arranged on the protective sleeve, the white light source is arranged at the upper end of the side wall of the protective sleeve, the liquid sprayer is arranged at the lower end of the side wall of the protective sleeve, and an observation window is also arranged on the side wall of the protective sleeve.

[0007] As an optimization, the measuring platform includes a handle and an image collector. The top of the protective sleeve is a placement opening, the placement opening is through-through from top to bottom, the image collector is arranged at the placement opening, and the handle is arranged on the image collector.

[0008] As an optimization, the image collector includes a support, a net, a digital SLR camera and an optical filter. The support is threadedly connected to the placement port, a net is arranged under the support, the digital SLR camera is arranged in the net, and an optical filter is arranged at the front end of the digital SLR camera.

[0009] As an optimization, the liquid sprayer includes a rubber water storage bag, a telescopic tube and a spray head which are connected in sequence. The rubber water storage bag is arranged on the outside of the protective sleeve, the telescopic tube passes through the wall of the protective sleeve, and the spray head is arranged in the protective sleeve and is located above the specimen placement table.

[0010] As an optimization, the specimen placing table is connected to the fixed base through a height adjustment bolt. The specimen placing table is a circular steel plate, and foam absorbent paper of the same size as the specimen placing table is set on the specimen placing table.

[0011] As an optimization, the white light source is a 30W xenon lamp, the white light source is at a 45° angle to the protective sleeve, a rectangular opening is opened on the wall of the protective sleeve, an observation window is set at the rectangular opening, and the observation window is a transparent acrylic plate, and the protective sleeve is a stainless steel sleeve.

[0012] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0013] The device arranges a liquid sprayer, a white light source and a measuring platform on a protective sleeve. The liquid sprayer can spray liquid on the concrete test block, the white light source is used for irradiation, and the measuring platform is used for photographing and testing. The whole device is more convenient to use, intuitive, has simple operating steps, strong flexibility, and small error in test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a structural diagram of the support and the net of the measuring platform of the utility model;

[0018] Figure 4 The utility model is a structural diagram of a digital SLR camera and an optical filter.

[0019] In the figure, 1. fixed base; 2. specimen placement table; 3. protective sleeve; 4. liquid sprayer; 41. rubber water storage bag; 42. telescopic tube; 43. spray head; 5. white light source; 6. observation window; 7. measuring table; 71. handle; 72. placement port; 73. image collector; 731. support; 732. net; 733. digital SLR camera; 734. optical filter. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of this solution, the utility model is described in detail below through specific implementation methods and in combination with the accompanying drawings. The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The utility model omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the utility model. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] like Figures 1 to 4 As shown, a novel concrete alkalinity testing device comprises a fixed base 1, a specimen placing table 2, a protective sleeve 3 and a measuring table 7. The specimen placing table 2 and the protective sleeve 3 are arranged on the fixed base 1, the protective sleeve 3 is sleeved outside the specimen placing table 2, the measuring table 7 is arranged on the top of the protective sleeve 3, a liquid sprayer 4 and a white light source 5 are also arranged on the protective sleeve 3, the white light source 5 is arranged at the upper end of the side wall of the protective sleeve 3, the liquid sprayer 4 is arranged at the lower end of the side wall of the protective sleeve 3, and an observation window 6 is also arranged on the side wall of the protective sleeve 3.

[0022] The device is provided with a liquid sprayer 4, a white light source 5 and a measuring platform 7 on a protective sleeve 3. The liquid sprayer 4 can spray liquid on the concrete test block, the white light source 5 can irradiate, and the measuring platform 7 can take pictures for testing. The whole device is more convenient to use, intuitive, simple in operation steps, strong in flexibility, and small in error in test results.

[0023] In this embodiment, the measuring platform 7 includes a handle 71 and an image collector 73. The top of the protective sleeve 3 is a placement opening 72, which is through-through. The image collector 73 is arranged at the placement opening 72, and the handle 71 is arranged on the image collector 73. In order to make the measurement more accurate, a whiteboard is laid on the fixed base 1, which can enhance the brightness of the photographed object, make the photo effect better, avoid the appearance of dark shadows, and make the image clearer.

[0024] The image collector 73 includes a support 731, a cover net 732, a digital SLR camera 733 and an optical filter 734. The support 731 is threadedly connected to the placement port 72. The cover net 732 is arranged below the support 731. The digital SLR camera 733 is arranged inside the cover net 732. The optical filter 734 is arranged at the front end of the digital SLR camera 733. Two optical filters 734 are arranged, and the two optical filters 734 transmit light of 500nm to 600nm and 600nm to 800nm ​​respectively, shielding unnecessary stray light, so that the acquired image is clearer.

[0025] In this embodiment, the liquid sprayer 4 includes a rubber water storage bag 41, a telescopic tube 42 and a spray head 43 which are connected in sequence. The rubber water storage bag 41 is arranged outside the protective sleeve 3, the telescopic tube 42 passes through the wall of the protective sleeve 3, and the spray head 43 is arranged inside the protective sleeve 3 and located above the specimen placement table 2. The test solution is stored in the rubber water storage bag 41, transferred to the telescopic tube 42 by extrusion, and evenly sprayed on the concrete test block by the spray head 43. The telescopic tube 42 can be telescopic and rotated to make the solution spraying more accurate.

[0026] In this embodiment, the specimen placing table 2 is connected to the fixed base 1 by a height adjustment bolt, which is convenient for adjusting the position of the concrete test block. The specimen placing table 2 is a circular steel plate. Foam absorbent paper of the same size as the specimen placing table 2 is set on the specimen placing table 2. Foam absorbent paper is set on the upper part of the specimen placing table 2. The foam absorbent paper is replaced once for the convenience of absorbing excess solution.

[0027] In this embodiment, the white light source 5 is a 30W xenon lamp, which is at a 45° angle to the protective sleeve 3. A rectangular opening is provided on the wall of the protective sleeve 3, and an observation window 6 is provided at the rectangular opening. The observation window 6 is a transparent acrylic plate, and the protective sleeve 3 is a stainless steel sleeve.

[0028] In order to achieve accurate measurement of the alkali activity of concrete specimens, a highly acid-base sensitive solution was prepared, which contained a mixed solution of porphyrin platinum (II) complex TFPLPT, pentafluorophenyl compound and phenolphthalein stock solution in a ratio of 5:3:30. The solution has a very high extinction value and good water solubility, and only a small amount of solution is needed for sensitive measurement.

[0029] When the device is used, the solution is first calibrated. The solution with a pH range of about 11.0 to 13.5 is calibrated through the digital SLR camera 733. The relationship between the light wave intensity value and the pH value of each pixel point is established through the matlab software. The foam absorbent paper on the specimen placement table 2 is replaced, and the concrete test block is placed on the specimen placement table 2. The height adjustment bolt on the specimen placement table 2 is adjusted to make the concrete test block level. The telescopic tube 42 is adjusted so that the spray head 43 reaches the appropriate position above the concrete test block, and the solution is filled into the rubber water storage bag 41. The white light source 5 is installed, the digital SLR camera 733 and the bandpass filter 734 are installed on the measuring table 7 through the set net 732, and the measuring table 7 is installed on the protective sleeve 3 through the placement port 72. The protective sleeve 3 and the observation table tube 2 are driven to rotate by the handle 71. After adjusting the position, the image collector 73 is installed. The white light source 5 is turned on and the rubber water storage bag 41 is squeezed until the upper surface of the concrete test block is evenly sprayed with the solution. The squeezing is stopped. Five minutes later, the digital SLR camera 733 takes a picture. The obtained image is processed by MATLAB. According to the function between the light wave intensity value and the pH value calibrated previously, the pH value of each pixel point is obtained. Therefore, the alkali activity of the concrete can be qualitatively analyzed according to the pH value of the surface of the concrete test block.

[0030] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, this does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A new type of concrete alkalinity testing device, characterized by: The invention comprises a fixed base (1), a specimen placement table (2), a protective sleeve (3) and a measuring table (7); the fixed base (1) is provided with the specimen placement table (2) and the protective sleeve (3); the protective sleeve (3) is sleeved outside the specimen placement table (2); the measuring table (7) is provided on the top of the protective sleeve (3); a liquid sprayer (4) and a white light source (5) are also provided on the protective sleeve (3); the white light source (5) is provided at the upper end of the side wall of the protective sleeve (3); the liquid sprayer (4) is provided at the lower end of the side wall of the protective sleeve (3); and an observation window (6) is also provided on the side wall of the protective sleeve (3).

2. The novel concrete alkalinity testing device according to claim 1 is characterized in that: The measuring platform (7) comprises a handle (71) and an image collector (73); the top of the protective sleeve (3) is a placement opening (72); the placement opening (72) is through-connected from top to bottom; the image collector (73) is arranged at the placement opening (72); and the handle (71) is arranged on the image collector (73).

3. The novel concrete alkalinity testing device according to claim 2 is characterized in that: The image collector (73) comprises a support (731), a sleeve net (732), a digital single-lens reflex camera (733) and an optical filter (734); the support (731) is threadedly connected to the placement opening (72); the sleeve net (732) is arranged below the support (731); the digital single-lens reflex camera (733) is arranged inside the sleeve net (732); and the optical filter (734) is arranged at the front end of the digital single-lens reflex camera (733).

4. The novel concrete alkalinity testing device according to claim 1 is characterized in that: The liquid sprayer (4) comprises a rubber water storage bag (41), a telescopic tube (42) and a spray head (43) which are connected in sequence; the rubber water storage bag (41) is arranged outside the protective sleeve (3); the telescopic tube (42) penetrates the wall of the protective sleeve (3); and the spray head (43) is arranged inside the protective sleeve (3) and is located above the specimen placement table (2).

5. The novel concrete alkalinity testing device according to claim 1 is characterized in that: The specimen placement platform (2) is connected to the fixed base (1) via a height adjustment bolt. The specimen placement platform (2) is a circular steel plate. Foam absorbent paper of the same size as the specimen placement platform (2) is arranged on the specimen placement platform (2).

6. The novel concrete alkalinity testing device according to claim 1 is characterized in that: The white light source (5) is a 30W xenon lamp. The white light source (5) and the protective sleeve (3) are at an angle of 45°. A rectangular opening is provided on the wall of the protective sleeve (3). The observation window (6) is arranged at the rectangular opening. The observation window (6) is a transparent acrylic plate. The protective sleeve (3) is a stainless steel sleeve.

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