CN214251898U - Capillary water absorption test device - Google Patents
Capillary water absorption test device Download PDFInfo
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- CN214251898U CN214251898U CN202023291312.2U CN202023291312U CN214251898U CN 214251898 U CN214251898 U CN 214251898U CN 202023291312 U CN202023291312 U CN 202023291312U CN 214251898 U CN214251898 U CN 214251898U
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Abstract
The utility model provides a capillary test device that absorbs water, include: the support comprises a horizontal rod and a vertical rod which can be detached at any time or freely combined, and the horizontal rod is provided with a plurality of grooves; the box body is connected with a funnel with scales through a communication port, and a box cover at the top of the box body is provided with a plurality of pores; the load sensor is arranged at the bottom of the box body; and the hanging scales comprise upper hooks and lower hooks, the upper hooks are hung on the grooves of the horizontal rods, and the lower hooks are hung with filter screens which penetrate through the fine holes and are used for bearing concrete samples. The technical problem that the measurement precision cannot be ensured because the change of the water absorption capacity is difficult to reflect when the water absorption capacity is less in the measurement process of the conventional continuous automatic measurement device is solved; meanwhile, the technical problems that the existing device keeps the liquid level stable by reducing the opening degree of a valve, the cost is high, the absolute level of the liquid level is difficult to guarantee, the difficulty in realization is high, only one test piece can be tested at one time, and the efficiency is low are solved.
Description
Technical Field
The utility model relates to a concrete durability test technical field especially relates to a capillary test device that absorbs water.
Background
Concrete is a typical porous building material, the pores provide a channel for liquid water to transmit in the concrete, but some harmful substances or aggressive ions (such as chloride ions, sulfate ions and the like) can enter the concrete along with the migration of water, so that damages such as steel bar corrosion, concrete structure damage and the like are caused; meanwhile, when moisture exists in the concrete material, cracks are easily generated under the action of freeze-thaw cycles, the durability of the structure is influenced, and the service life of the concrete material is shortened. The capillary water absorption coefficient of the concrete is an important index for evaluating the durability of the concrete, so that the capillary water absorption of the concrete is accurately measured, the water absorption coefficient is obtained, and the method has important significance for predicting the service life of the concrete.
The method widely used at present for measuring the capillary water absorption coefficient is a gravimetric method, the method requires that the side surface of a concrete test block is sealed, only the bottom surface of the concrete test block is contacted with water, the one-dimensional transportation of water is met, the concrete test block is immersed in the water for 2 +/-1 mm, the test block is taken out according to a specified time interval, a towel or sponge is used for wiping residual water drops, the quality of the test block is measured, and the mass difference between the front part and the rear part of the test block is the capillary water absorption capacity of the test block. The gravimetric method has simple device and easy operation, but the test piece needs to be taken out for many times in the test process, so that the loss of absorbed moisture can be caused, the operation is complicated, and dynamic continuous measurement cannot be realized; when the device is used for wiping, the measurement precision can be influenced due to the difference of the relative humidity between the towel or the sponge and the concrete; meanwhile, the test device is completely open, and the water absorption capacity of the test piece is easily influenced by the environmental humidity.
In recent years, those skilled in the art are continuously studying continuous automatic measuring apparatuses that do not require a test piece to be taken out. The continuous automatic measuring device shown in fig. 1 can continuously and automatically measure the capillary water absorption of concrete, but in the method, the mass of a pull rod and a tray is large, and a concrete test piece with large gravity is added, so that in the measuring process, when the water absorption is small, the proportion of the water absorption mass to the total mass of the whole test piece, the tray and the pull rod is small, the change of the water absorption is difficult to reflect, and the measuring precision cannot be ensured; the method has the advantages that the opening degree of the valve is reduced, the flowing water is utilized to keep the liquid level stable, the cost is high, the absolute level of the liquid level is difficult to guarantee, the realization difficulty is high, and meanwhile, only one test piece can be tested at one time, so that the efficiency is low.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the continuous measuring device in the prior art, the utility model provides a capillary water absorption test device, which solves the problems that the quality of a pull rod and a tray of the existing continuous automatic measuring device is large, and in addition, a concrete test piece with large weight is added, and in the measuring process, when the water absorption is less, the proportion of the water absorption quality in the total mass of the system consisting of the whole test piece, the tray and the pull rod is small, so that the change of the water absorption is difficult to reflect, and the technical problem of measuring precision can not be ensured; meanwhile, the technical problems that the existing continuous automatic measuring device keeps the liquid level stable by reducing the opening degree of a valve and utilizing flowing water, the cost is high, the absolute level of the liquid level is difficult to ensure, the realization difficulty is high, and only one test piece can be measured by the method at one time, and the efficiency is low are solved.
A capillary wicking test device comprising:
the support comprises a horizontal rod and a vertical rod which can be detached at any time or freely combined, and the horizontal rod is provided with a plurality of grooves;
the box body is connected with a funnel with scales through a communication port, and a box cover at the top of the box body is provided with a plurality of fine holes;
the load sensor is arranged at the bottom of the box body;
the hanging scales comprise upper hooks and lower hooks, the upper hooks are hung on the grooves of the horizontal rods, and filter screens which penetrate through the fine holes and are used for bearing concrete samples are hung on the lower hooks.
In some of the embodiments, the horizontal rod further comprises a transverse telescopic member connected by a movable bolt, and the vertical rod is further provided with a horizontal steel plate at the bottom.
In some embodiments, the two ends of each horizontal rod section have holes with the same inner diameter and adapted to the movable bolts, and the two horizontal rods connected with each other are nested together.
In some embodiments, a water outlet tubule is arranged on the right side of the box body.
In some embodiments, the box cover of the box body is further provided with a handle, and the bottom of the right lower part of the box body is provided with a controllable valve.
In some embodiments, the height of the controllable valve is lower than that of the water outlet tubule.
In some embodiments, an electronic display screen is further arranged between the upper hook and the lower hook.
In some embodiments, the height of the communication port of the box body and the funnel is lower than that of the water outlet tubule.
In some of these examples, thin iron wires, which substantially conform to the shape of the concrete specimen, are placed on the upper and lower surfaces of the concrete specimen, together with the filter mesh.
In some of these embodiments, the horizontal and vertical rods are joined by a rigid right angle joint.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
1. the capillary water absorption test device provided by the utility model is a device which can continuously measure a plurality of concrete samples with different sizes at the same time, and the measurement efficiency is improved; the load sensor measures the load change of the whole water tank system, the graduated funnel reflects the reduction of the liquid level, the influence of the buoyancy at the end point of the test can be calculated, the funnel is arranged, so that the water surface is in the static creep process in the continuous water absorption process, and the method is superior to the mode of controlling the water surface by flowing water.
2. The capillary water absorption test device provided by the utility model is used for continuously measuring the capillary water absorption of concrete in a period of time, wherein the size of the water tank is set to be larger, and the variation of the liquid level in the water tank is smaller along with the progress of water absorption, so that the influence of buoyancy is weakened; the valve is arranged to facilitate water drainage; the utility model connects the horizontal rod and the vertical rod through the detachable rigid right-angle joint, and the horizontal rod can be extended and contracted, so that the rods with different sizes can be detached and combined freely, the size of the bracket can be adjusted, and the purpose of recycling the device can be achieved; the change of the water absorption quality can be reflected visually by using the hanging scale. The test piece does not need to be taken out in the test process, so that the error is reduced; the method is simple to operate and high in practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a continuous automatic measuring device for capillary water absorption of concrete according to the prior art;
FIG. 2 is a schematic structural view of a capillary water absorption test device according to an embodiment of the present invention;
wherein:
1. a support; 2. a box body; 3. a load sensor; 4. hanging a scale; 11. a horizontal bar; 12. a vertical rod; 111. a groove; 112. a transverse telescoping member; 121. a horizontal steel plate; 13. a rigid right angle joint; 21. a communication port; 22. a funnel; 23. a water outlet thin tube; 25. a box cover; 251. a handle; 252. fine pores; 26. a controllable valve; 41. an upper hook; 42. a lower hook; 43. an electronic display screen; 44. filtering with a screen; 441. a concrete sample; 442. and (5) fine iron wires.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The embodiment of the application provides a capillary test device that absorbs water, this capillary test device that absorbs water includes:
the support 1 comprises a horizontal rod 11 and a vertical rod 12 which can be detached at any time or freely combined, and the horizontal rod 11 is provided with a plurality of grooves 111; the grooves 111 are arranged on the horizontal rod 11 at equal intervals, and the interval between any two adjacent grooves 111 is not less than 100mm and not more than 200 mm.
The box body 2 is connected with a funnel 22 with scales through a communication port 21, and a plurality of fine holes 252 are formed in a box cover 25 on the top of the box body 2;
the load sensor 3 is arranged at the bottom of the box body 2; in the present embodiment, the load sensor 3 is disposed right below the case 2, and both transmit the load by contact.
The hanging scales 4 comprise an upper hook 41 and a lower hook 42, the upper hook 41 is hung on the groove 111 of the horizontal rod 11, the size of the groove 111 is slightly larger than the diameter of the upper hook, so that the hanging of the hooks is convenient, the stability of the hanging scales is not influenced, the lower hook 42 is hung with a filter screen 44 which penetrates through the fine hole 252 and is used for bearing the concrete sample 441, the lower hook 42 is arranged outside the box cover 25, the shape and the size of the filter screen 44 in the embodiment can be customized, the filter screen 44 is used for bearing the concrete sample 441, and the length of a thin line at the connecting part of the filter screen 44 and the lower hook 42 of the hanging scales 4 can be controlled manually, so that the height of the concrete sample 441 is adjusted, and the hanging scales 4 are flexible to apply and more convenient;
the horizontal rod 11 further includes two or more than three transverse telescopic members 112 connected by movable bolts, in this embodiment, the two horizontal rods 11 are connected by the movable bolts, so as to adjust the size of the bracket; the vertical rod 12 is further provided at the bottom with a horizontal steel plate 121. In the embodiment, two ends of each section of horizontal rod are provided with holes which have the same inner diameter and are suitable for the movable bolts, the inner diameters of the two sections of horizontal rods which are connected are slightly different, so that the two rods are mutually nested together,
specifically, a water outlet tubule 23 is arranged on the right side of the box body 2.
The box cover 25 at the top of the box body 2 can be freely opened or closed, so that water injection is facilitated; the cover 25 of the box 2 is further provided with a handle 251, and the bottom of the right lower part of the box 2 is provided with a controllable valve 26.
Specifically, the height of the controllable valve 26 is lower than that of the water outlet thin pipe 23, and the diameter is only 20mm-30mm, so that the purpose is to facilitate water drainage. In the embodiment, the bottom of the concrete sample is 2 +/-1 mm lower than the water outlet tubule.
Wherein, an electronic display screen 43 is arranged between the upper hook 41 and the lower hook 42; the height of the communicating opening 21 between the box body 2 and the funnel 22 is lower than that of the water outlet tubule 23. The funnel 22 can continuously read the change of the water quantity, and when the water level reaches the water level line quickly, water is injected through the funnel 22, so that too much water cannot overflow through the water outlet tubule 23, and the purpose of saving water is achieved.
Wherein, the diameter of the water outlet tubule of the embodiment is not more than 10 mm; the diameter of the communicating opening and the vertical tube of the funnel is not more than 20 mm; the handles are arranged at two edges of the box cover; the fine holes are arranged at equal intervals, the distance between any two adjacent fine holes is not less than 100mm and not more than 200mm, and the grooves 111 and the fine holes 252 are positioned on the same plumb line during the test to ensure that the fine line of the filter screen 44 is plumb.
Wherein, the upper and lower surfaces of the concrete specimen 441 are provided with thin iron wires 442 which are basically matched with the shape of the concrete specimen, and are arranged in the filter screen 44 together to ensure balance.
Wherein, horizontal pole 11 and vertical pole 12 splice through rigidity right angle shape joint 13, can dismantle at any time or with the horizontal pole 11 and the vertical pole 12 free combination of different length to the size of adjustment support adapts to the water tank of different sizes, reaches support reuse's purpose.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. Capillary test device that absorbs water, its characterized in that: the capillary water absorption test device comprises:
the support comprises a horizontal rod and a vertical rod which can be detached at any time or freely combined, and the horizontal rod is provided with a plurality of grooves;
the box body is connected with a funnel with scales through a communication port, and a box cover at the top of the box body is provided with a plurality of fine holes;
the load sensor is arranged at the bottom of the box body;
the hanging scales comprise upper hooks and lower hooks, the upper hooks are hung on the grooves of the horizontal rods, and filter screens which penetrate through the fine holes and are used for bearing concrete samples are hung on the lower hooks.
2. The capillary wicking test device of claim 1, wherein: the horizontal rod further comprises a transverse telescopic component connected by a movable bolt, and the bottom of the vertical rod is provided with a horizontal steel plate.
3. The capillary wicking test device of claim 2, wherein: two ends of each section of horizontal rod are provided with holes which have the same inner diameter and are suitable for the movable bolts, and the two sections of horizontal rods connected with each other are nested together.
4. The capillary wicking test device of claim 1, wherein: and a water outlet thin tube is arranged on the right side of the box body.
5. The capillary wicking test device of claim 4, wherein: the box cover of the box body is further provided with a handle, and the bottom of the right lower part of the box body is provided with a controllable valve.
6. The capillary wicking test device of claim 5, wherein: the height of the controllable valve is lower than that of the water outlet thin pipe.
7. The capillary wicking test device of claim 1, wherein: an electronic display screen is further arranged between the upper hook and the lower hook.
8. The capillary wicking test device of claim 4, wherein: the height of the communicating opening of the box body and the funnel is lower than that of the water outlet thin tube.
9. The capillary wicking test device of claim 1, wherein: and thin iron wires which are basically matched with the concrete sample in shape are placed on the upper surface and the lower surface of the concrete sample and are placed in the filter screen together.
10. The capillary wicking test device of claim 1, wherein: the horizontal rods and the vertical rods are spliced through rigid right-angle joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023291312.2U CN214251898U (en) | 2020-12-30 | 2020-12-30 | Capillary water absorption test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023291312.2U CN214251898U (en) | 2020-12-30 | 2020-12-30 | Capillary water absorption test device |
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| Publication Number | Publication Date |
|---|---|
| CN214251898U true CN214251898U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023291312.2U Active CN214251898U (en) | 2020-12-30 | 2020-12-30 | Capillary water absorption test device |
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| CN (1) | CN214251898U (en) |
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- 2020-12-30 CN CN202023291312.2U patent/CN214251898U/en active Active
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