Sample preparation mold for concrete capillary water adsorption test

Abstract

The utility model discloses a sample preparation mould for a concrete capillary water adsorption test, which comprises a bearing bedplate, a U-shaped pouring groove is arranged at the top of the bearing bedplate, first mould seats and second mould seats are arranged in the U-shaped pouring groove, and three groups of the first mould seats and the second mould seats are arranged in two groups. The utility model relates to the technical field of concrete tests. According to the sample preparation mold for the concrete capillary water adsorption test, a plurality of groups of first mold seats and second mold seats are arranged on the inner side of a U-shaped pouring groove and are matched with second threaded grooves and threaded bolts for use, and the first mold seats and the second mold seats can be conveniently and quickly mounted and fixed independently through the structural arrangement; the two sample grooves can be in sealed butt joint to form a complete cylinder through the first mold base and the second mold base which are in butt joint after butt joint, and therefore a worker can conveniently prepare a plurality of cylindrical samples at a time according to needs.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete test technical field, concretely is a kind of sample preparation mould of concrete capillary water adsorption test. BACKGROUND

[0002] Durability problem is one of the most prominent problems of concrete structure, and the existence and transmission of water is the key factor and necessary condition leading to cement-based material durability problem. Water not only provides carrier for harmful ions into concrete structure, but also is closely related to other deterioration behaviors of concrete structure, including physical and chemical destruction process. Therefore, studying the capillary water absorption phenomenon of cement-based material has a key guiding role for further understanding of its durability problem. The pore structure of porous material plays a decisive role in its capillary water absorption process and is closely related to capillary adsorption. Therefore, it is particularly important to analyze the transmission mechanism of internal pore water of cement-based material and explore the relationship between its microstructure and capillary water absorption characteristics from the pore structure of cement-based material and combined with classical theory of capillary water absorption. However, current capillary water adsorption test and analysis are mainly based on macroscopic and microscopic experiments, which cannot deeply analyze the micro water absorption process and mechanism. Therefore, it is necessary to explore the capillary water adsorption characteristics and mechanism of cement-based material from the micro level.

[0003] The nano X-ray CT tomography scanner applied in the capillary water adsorption test can non-destructively and continuously monitor and track the capillary water adsorption test process, and provide experimental data such as water absorption path and corresponding time of capillary water adsorption test. In addition, since the nano X-ray CT tomography scanner has certain limitations on the size of the tested test block, high-precision experimental data can be obtained, the adsorption process at the micro level can be studied, and the water adsorption path in the entire capillary pore range can be obtained.

[0004] In order to obtain more experimental data at the same time, multiple samples need to be prepared at one time before the experiment, but the existing sample preparation mold is too simple, and only a single sample can be prepared at one time. The characteristics of concrete will change slowly over time, and if only a single mold is used to prepare sequentially, the quality of the samples will be different, which will affect the experimental data. At the same time, using multiple molds for preparation is not convenient to operate and is too cumbersome.

[0005] Therefore, a concrete capillary water adsorption test sample preparation mold is designed to improve the sample preparation speed to solve such defects. Utility model content

[0006] In view of the deficiencies of the prior art, the utility model provides a concrete capillary water adsorption test sample preparation mold, which solves the problem of complicated preparation of existing concrete experimental samples.

[0007] In order to achieve the above object, the utility model discloses a kind of sample preparation mould of concrete capillary water adsorption test, including supporting table board, the top of the supporting table board is provided with U-shaped pouring groove, the inside of the U-shaped pouring groove is provided with first mould seat and second mould seat, and first mould seat and second mould seat two are provided with three groups, the side opposite of first mould seat and second mould seat in the same group is provided with sample groove that is mutually matched, and sample groove is provided with several.

[0008] Preferably, the bottom of the inner cavity of the U-shaped pouring groove is fixedly connected with a rectangular guide seat, and the rectangular guide seat is provided with a plurality of rectangular guide grooves matched with the rectangular guide seat.

[0009] Preferably, the top of the rectangular guide seat is provided with a first threaded groove, and the first threaded groove is provided with a plurality of second threaded grooves matched with the first threaded groove, and the inner threads of the first threaded groove and the second threaded groove are connected with a threaded bolt.

[0010] Preferably, the surface of the supporting table board between adjacent two rectangular guide seats is provided with a sampling port, and the inner side of the sampling port is slidably installed with a supporting insert plate matched with the sample groove.

[0011] Preferably, the bottom of the supporting table board is fixedly installed with a supporting base frame on both sides through a fixed plate.

[0012] Beneficial effects

[0013] The utility model provides a kind of sample preparation mould of concrete capillary water adsorption test.Compared with prior art, it has the following beneficial effects:

[0014] (1), the sample preparation mould of concrete capillary water adsorption test, by being provided with a plurality of groups of first mould seat and second mould seat in the inner side of U-shaped pouring groove, and being used in conjunction with second threaded groove and threaded bolt, the setting of these structures can be separately installed and fixed first mould seat and second mould seat quickly and conveniently, and the butt-jointed first mould seat and second mould seat can be sealed butt-jointed two sample grooves to form a complete cylinder, so that staff can prepare multiple cylindrical samples at a time according to needs, and the quality of each sample is the same, effectively improve the preparation efficiency and the accuracy of experimental data.

[0015] (2), the sample preparation mould of concrete capillary water adsorption test, by being provided with sampling port in the bottom of the inner cavity of U-shaped pouring groove, and being installed with supporting insert plate in the inner side of sampling port, the setting of these structures can be sampled conveniently, and also convenient for cleaning supporting insert plate, facilitate subsequent use, improve the service life of equipment. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0017] Fig. 2 This is a schematic diagram of the structure of the first mold base, the second mold base, and the sample groove of this utility model;

[0018] Fig. 3 This is a schematic diagram of the U-shaped trough, sampling port, and supporting plate structure of this utility model.

[0019] In the diagram: 1. Support plate; 2. U-shaped sprue; 3. First mold base; 4. Second mold base; 5. Sample slot; 6. Rectangular guide seat; 7. First threaded groove; 8. Rectangular guide groove; 9. Second threaded groove; 10. Threaded bolt; 11. Sampling port; 12. Support plate; 13. Support base frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figs. 1-3 This utility model provides a technical solution: a sample preparation mold for a concrete capillary water adsorption test, including a support plate 1, a U-shaped pouring groove 2 on the top of the support plate 1, a first mold seat 3 and a second mold seat 4 arranged inside the U-shaped pouring groove 2, the first mold seat 3 and the second mold seat 4 can fit tightly together, and three sets of the first mold seat 3 and the second mold seat 4 are arranged in pairs. On opposite sides of the first mold seat 3 and the second mold seat 4 in the same set, there are sample slots 5 that cooperate with each other. Two sample slots 5 can be joined together to form a complete cylindrical slot, and the sample slots 5 are provided with... Several support bases 13 are fixedly installed on both sides of the bottom of the support plate 1 by fixing plates. A rectangular guide seat 6 is fixedly connected to the bottom of the inner cavity of the U-shaped sprue 2, and several rectangular guide seats 6 are provided. The bottom of the first mold base 3 and the second mold base 4 are provided with rectangular guide grooves 8 that cooperate with the rectangular guide seats 6. The top of the rectangular guide seat 6 is provided with a first threaded groove 7, and several first threaded grooves 7 are provided. The top of the first mold base 3 is provided with a second threaded groove 9 that cooperates with the first threaded groove 7. Threaded bolts 10 are threadedly connected to the inner sides of the first threaded groove 7 and the second threaded groove 9.

[0022] In use, first mold seat 3 and second mold seat 4 of the same group are first slidably connected with rectangular guide groove 8 and rectangular guide seat 6 at the bottom, so that first mold seat 3 and second mold seat 4 are slidably installed inside U-shaped pouring channel 2, and first threaded groove 7 is aligned with second threaded groove 9, then threaded bolt 10 is screwed into the inside of second threaded groove 9 and screwed until threaded bolt 10 is connected with first threaded groove 7, at this time first mold seat 3 and second mold seat 4 are fixed, and meanwhile sample groove 5 at the opposite side of first mold seat 3 and second mold seat 4 of the same group is also abutted to form a complete and sealed cylindrical groove, then the preparation of concrete cylinder is carried out inside sample groove 5.

[0023] Further, sampling socket 11 is opened on the surface of supporting table plate 1 and between two adjacent rectangular guide seats 6, sampling socket 11 has supporting plug plate 12 slidably installed inside, supporting plug plate 12 is used in cooperation with sample groove 5, and supporting plug plate 12 and sampling socket 11 are in interference fit and have friction force.

[0024] After the preparation is completed, supporting plug plate 12 is pulled out from the inside of sampling socket 11, at this time the bottom of sample groove 5 is in a hollow state, which is convenient for taking out the sample, and meanwhile supporting plug plate 12 can also be conveniently cleaned.

[0025] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

Claims

1. A sample preparation mold for a concrete capillary water absorption test, comprising a support table (1), characterized in that: The top of the supporting table plate (1) is provided with a U-shaped pouring channel (2), the inside of the U-shaped pouring channel (2) is provided with a first mold seat (3) and a second mold seat (4), and the first mold seat (3) and the second mold seat (4) are provided with three groups, the opposite sides of the first mold seat (3) and the second mold seat (4) in the same group are provided with sample grooves (5) matched with each other, and the sample grooves (5) are provided with a plurality of sample grooves (5).

2. The sample preparation mold for a concrete capillary water absorption test according to claim 1, characterized by: The bottom of the U-shaped pouring channel (2) is fixedly connected with a rectangular guide seat (6), and the rectangular guide seat (6) is provided with a plurality of rectangular guide seats (6), the bottom of the first mold seat (3) and the second mold seat (4) is provided with a rectangular guide groove (8) matched with the rectangular guide seat (6).

3. The sample preparation mold for a concrete capillary water absorption test according to claim 2, characterized by: The top of the rectangular guide seat (6) is provided with a first threaded groove (7), and the first threaded groove (7) is provided with a plurality of first threaded grooves (7), the top of the first mold seat (3) is provided with a second threaded groove (9) matched with the first threaded groove (7), and the inside of the first threaded groove (7) and the second threaded groove (9) is screw-connected with a threaded bolt (10).

4. The sample preparation mold for capillary water absorption test of concrete according to claim 1, characterized in that: The surface of the supporting table plate (1) and between the adjacent two rectangular guide seats (6) is provided with a sampling socket (11), and the inside of the sampling socket (11) is slidably installed with a supporting plug plate (12) matched with the sample groove (5).

5. The sample preparation mold for capillary water absorption test of concrete according to claim 1, characterized in that: The two sides of the bottom of the supporting table plate (1) are fixedly installed with a supporting chassis (13) through a fixed plate.

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