CN213210162U - Quick detection device of concrete expansion rate - Google Patents
Quick detection device of concrete expansion rate Download PDFInfo
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- CN213210162U CN213210162U CN202021470539.0U CN202021470539U CN213210162U CN 213210162 U CN213210162 U CN 213210162U CN 202021470539 U CN202021470539 U CN 202021470539U CN 213210162 U CN213210162 U CN 213210162U
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Abstract
A quick concrete expansion rate detection device comprises a detection test die, a sealed liquid cabin and a flat piston, wherein the detection test die and the sealed liquid cabin are respectively box-shaped, one side of the detection test die is provided with an opening, the side, provided with the opening, of the sealed liquid cabin is sleeved with the side, provided with the opening, of the detection test die, the flat piston is sleeved on the inner wall of the sealed liquid cabin, the flat piston and the sealed liquid cabin form a sealed cavity, the sealed liquid cabin is provided with a liquid measuring pipe and a liquid injection pipe, and the liquid measuring pipe and the liquid injection pipe are communicated with the sealed liquid cabin; the utility model discloses can detect the quick inflation to the concrete, can still good measurement expansion rate under the inhomogeneous condition of shrink inflation simultaneously.
Description
Technical Field
The utility model relates to an instrument is tested in the building materials trade, concretely relates to concrete expansion rate short-term test device.
Background
The concrete material is a material easy to crack due to the inherent mechanical properties of compression resistance and no tensile strength. The cracks cause the function reduction or loss of the concrete structure, and the service life and the operation safety of the building are seriously influenced. The phenomena of corrosion, steel bar corrosion and the like appear in a large number of concrete structures before the design life, and a large amount of manpower and financial resources are spent on repairing cracks and even on dismantling and rebuilding. The expansion agent is adopted to prepare the shrinkage-compensated concrete, which is one of effective measures for solving the cracking of the concrete. Therefore, there are many ways to detect the performance of the bulking agent. The concrete limited expansion rate is an indispensable test method for detecting the expanding agent, and the measurement mode directly influences the performance of the expanding agent.
The existing concrete expansion rate measuring instrument generally realizes positioning transmission through a displacement sensor, and the displacement sensor measures distance change through the change of the expansion rate of a cover plate on concrete to realize the measurement of the expansion rate. However, in this process, the displacement sensor measures and changes the cover plate, but the expansion in the real process is not uniform, and the displacement sensor has high requirement on the stability of the device, and if the expansion is not uniform and the device has vibration in the measurement process, the measurement result is affected.
Chinese patent CN201320492045.6 discloses a concrete expansion rate tester, which is used for measuring the expansion rate and comprises a base, a test tube, a cover pad, a test bracket and a displacement sensor; the bottom of the test tube is fixed on the base; the cover gasket is positioned inside the test tube; one end of the test bracket is fixed with the base; the displacement sensor is fixed on the test bracket and is positioned above the opening at the top of the test tube; the displacement motion sensor corresponds to the cover pad; through setting up displacement sensor above the test tube, when bearing the weight of the concrete in the test tube, the pad lid is on the concrete, along with the inflation of concrete, the pad is by jack-up, and displacement sensor is through the position change of survey pad, surveys the inflation of concrete, but the transmission of sensor is unstable, and is high to the precision and the stability requirement of instrument, and measuring speed is slow simultaneously.
Disclosure of Invention
The utility model aims at the problem that prior art exists, a concrete expansion rate short-term test device is provided to stabilize the device of quick detection concrete expansion rate.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a concrete expansion rate short-term test device, is including detecting examination mould, sealed liquid cabin and dull and stereotyped piston, it is the box-shape respectively to detect examination mould and sealed liquid cabin to the one side is equipped with the opening, sealed liquid cabin has the open-ended one side cover to be established it has the open-ended one side to detect the examination mould, sealed liquid cabin inner wall cover is equipped with dull and stereotyped piston, dull and stereotyped piston with sealed liquid cabin forms sealed chamber, be equipped with the liquid measuring pipe on the sealed liquid cabin and annotate the liquid pipe, the liquid measuring pipe with annotate the liquid pipe intercommunication sealed liquid cabin.
Through the device, place the concrete that needs detected in the detection examination mould, the setting of dull and stereotyped piston realizes that the concrete drags the motion of dull and stereotyped piston at the inflation process, sealed liquid cabin links liquid pipe and annotates the liquid pipe, annotate the liquid pipe and to annotate liquid to sealed liquid cabin in injection liquid, the setting of liquid pipe is measured, realize the change of liquid clear measurement liquid post on liquid pipe is measured, dull and stereotyped piston is placed in the inside setting of sealed cabin, realize the change of dull and stereotyped piston's motion drive liquid, and then survey the reading of liquid pipe, sealed liquid cabin is smooth with the inner wall of detection examination mould installation completion back and is connected.
Further, the outer wall of the detection test mold is provided with a plurality of screw rod lock catches, each screw rod lock catch comprises a fixing plate, a screw rod and a nut, one end of each screw rod is hinged to the fixing plate, the other end of each screw rod is in threaded connection with the nut, the outer wall of the sealed liquid cabin is provided with a plurality of lock catch fixing holes, each lock catch fixing hole is groove-shaped, and the screw rods of the screw rod lock catches are clamped in the grooves of the lock catch fixing holes.
The setting of fixing in the recess through the screw rod has the fastness, and sealed liquid tank and the fixed connection who detects the examination mould realize that the concrete is at initial placing and follow-up inflation in-process, and the dull and stereotyped piston slides steadily in sealed liquid tank, and sealed liquid tank does not take place any removal at the relative examination mould that detects of the inflation in-process of concrete, and then the liquid column that dull and stereotyped piston motion drove does not receive external influence, and then improves measurement accuracy.
Furthermore, the detection test mold is a square box body formed by welding stainless steel plates, the side length of the bottom surface of the detection test mold is 300-500 mm, and the height of the side plate is 100-200 mm.
Furthermore, the sealed liquid cabin is transparent organic glass, and the side length of the inner wall of the sealed liquid cabin is 1-2 mm larger than the detection test mold.
Through the setting of sealed liquid tank organic glass, be convenient for observe and be convenient for observe at injection liquid and concrete inflation process, make its better be full of whole sealed liquid under-deck with liquid, the inner wall in sealed liquid tank is greater than the detection and tests 1 ~ 2mm of mould and realizes that the firm cover in sealed liquid tank establishes the detection and tests the mould.
Furthermore, a round hole is formed in the center of the sealed liquid cabin, and the liquid measuring pipe is vertically inserted into the round hole and is sealed at the round hole.
Through the setting of liquid measuring pipe, under the promotion of dull and stereotyped piston, the change of liquid in the liquid injection pipe realizes the change of liquid column on the scale interval, and joint department is sealed prevents that liquid from flowing out the scale interval of influence observation in the sealed storehouse.
Furthermore, the tube body of the liquid measuring tube is provided with a scale mark with the calculation precision of 0.1ml, the middle of the tube body is provided with a zero scale mark, and more than the zero scale mark is positive, and less than the zero scale mark is negative.
When liquid is injected, the liquid reaches the position of zero scale, and in the process of concrete expansion, the precision of the liquid measuring tube is 0.1ml, so that the accurate measurement reading is facilitated.
Further, annotate the liquid pipe setting and be close to the edge of sealed liquid cabin, be equipped with the rubber buffer on annotating the liquid pipe, the rubber buffer is fixed annotate the opening part of liquid pipe.
The liquid injection pipe is placed beside the edge of the sealed liquid tank, so that liquid can be conveniently injected, and the arrangement of the rubber piston can further prevent the liquid in the sealed tank from overflowing.
Further, the flat piston is a stainless steel thin plate, and a rubber sleeve is wrapped outside the stainless steel thin plate.
Through annotating the rubber that sets up on liquid pipe and the flat piston, realize preventing that the liquid that spills influences the change of follow-up volume liquid pipe liquid column, and then cause the influence to measured data.
Furthermore, concrete is poured in the detection testing mold, and liquid is injected into the sealed liquid cabin.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the concrete expansion rate rapid detection device is simple in structure, convenient to assemble, good in sealing performance and convenient to rapidly detect the expansion rate of concrete.
(2) The arrangement of the flat piston and the sealed liquid tank realizes that the flat piston is driven to move in the expansion or contraction process of concrete, so that the reading is measured, and the problem that the reading is still good under the condition of uneven contraction and expansion is solved;
(3) the screw rod hasp and the setting of hasp fixed orifices realize sealed liquid tank and detect the firm connection of examination mould together, have solved and have not influenced by external world at the expanded process.
Drawings
FIG. 1 is a partial structural sectional view of a rapid concrete expansion ratio detection device of the present invention;
FIG. 2 is a top view of the rapid concrete expansion rate detection device of the present invention;
FIG. 3 is a partial schematic view of a screw lock of the rapid concrete expansion rate detection device of the present invention;
in the figure: 1. detecting a test mold; 2. sealing the liquid tank; 3. a plate piston; 4. a liquid measuring tube; 5. a locking and fastening hole; 6. locking the screw rod; 7. a liquid injection pipe; 8. a rubber sleeve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, a quick detection device of concrete expansion rate, including detecting test mould 1, sealed tank 2 and flat piston 3, it is box-shaped respectively to detect test mould 1 and sealed tank 2 to the one side is equipped with the opening, sealed tank 2 has the open-ended one side cover to be established detect test mould 1 has the open-ended one side, 2 inner wall covers of sealed tank are equipped with flat piston 3, flat piston 3 with sealed tank 2 forms sealed chamber, be equipped with liquid measuring pipe 4 and notes liquid pipe 7 on the sealed tank 2, liquid measuring pipe 4 with it communicates to annotate liquid pipe 7 sealed tank 2.
Pouring concrete into the detection test mold 1, trowelling the surface of the concrete, enabling the surface of the concrete to be 1 mm-2 mm higher than the extension of the detection test mold 1, then sleeving the sealed liquid cabin 2, injecting liquid into the sealed liquid cabin 2 through the liquid injection pipe 7 until the liquid level reaches the zero scale position of the liquid measuring pipe 4 connected with the center of the sealed liquid cabin 2, closing the liquid injection pipe 7, pushing the flat piston 3 to move in the expansion process of the concrete, further enabling a liquid column in the sealed liquid cabin 2 to change, and further measuring the reading of the liquid measuring pipe 4.
The outer wall of the detection test mold 1 is provided with a plurality of screw rod lock catches 6, each screw rod lock catch 6 comprises a fixing plate, a screw rod and a nut, one end of each screw rod is hinged to the corresponding fixing plate, the other end of each screw rod is in threaded connection with the corresponding nut, the outer wall of the sealed liquid tank 2 is provided with a plurality of lock catch fixing holes 5, each lock catch fixing hole 5 is groove-shaped, and the screw rods of the screw rod lock catches 6 are clamped in the grooves of the lock catch fixing holes 5.
Through the setting that detects test mould 1 and sealed liquid tank 2 every limit and all be provided with a screw rod hasp 6 and hasp fixed orifices 5, sheathe in at detection test mould 1 when sealed liquid tank 2, with the screw rod card of screw rod hasp 6 in the recess department of hasp fixed orifices 5 to lock through the nut, and then realize the concrete in the inflation in-process, detect test mould 1 and sealed liquid tank 2 and fix together.
The detection test mold 1 is a square box body formed by welding stainless steel plates, the side length of the bottom surface of the detection test mold 1 is 400mm, and the height of a side plate is 150 mm.
The sealed liquid cabin 2 is made of transparent organic glass, and the side length of the inner wall of the sealed liquid cabin 2 is 1-2 mm larger than the detection test mold.
The center of the sealed liquid cabin 2 is provided with a round hole, and the liquid measuring pipe 4 is vertically inserted into the round hole and sealed at the round hole.
The pipe shaft of buret 4 is equipped with the scale mark that the computational accuracy is 0.1ml, the pipe shaft middle part is equipped with zero scale mark, be positive value above the zero scale mark, be the negative value below.
Annotate liquid pipe 7 and setting up and being close to sealed liquid cabin 2's edge, be equipped with the rubber buffer on annotating liquid pipe 7, the rubber buffer is fixed annotate the opening part of liquid pipe 7.
The flat piston 3 is a stainless steel thin plate, and a rubber sleeve 8 is wrapped outside the stainless steel thin plate.
Concrete is poured into the detection test mold 1, and liquid is injected into the sealed liquid cabin 2.
When the utility model discloses the installation finishes the back, detects the concrete in the examination mould 1 and has certain shrink or inflation in the hardening process, and the concrete surface has certain bonding strength with dull and stereotyped piston 3. When the concrete shrinks, the flat piston 3 descends, the liquid level of the sealed liquid cabin 2 descends, the liquid level in the liquid measuring tube 4 descends to below zero scale, and the volume reading v of the liquid reduction in the liquid measuring tube is recorded to be 15.5 ml; when the concrete expands, the flat piston 3 rises along with the concrete, the liquid level of the sealed liquid tank 2 rises, the liquid level in the liquid measuring tube 4 rises above the zero scale, and the volume reading v of the liquid increase in the liquid measuring tube is recorded to be 15.5 ml.
According to the utility model discloses the concrete shrinkage factor or the expansion ratio calculation that detect do:
in the formula: ε is the shrinkage, a is the side length, h is the initial concrete height, and v is the volume of the burette reduction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a concrete expansion rate short-term test device which characterized in that: including detecting test mould (1), sealed tank (2) and flat piston (3), it is the box-shape respectively to detect test mould (1) and sealed tank (2) to the one side is equipped with the opening, sealed tank (2) have open-ended one side cover to establish detect test mould (1) have the open-ended one side, sealed tank (2) inner wall cover is equipped with flat piston (3), flat piston (3) with sealed tank (2) form sealed chamber, be equipped with liquid measuring pipe (4) and annotate liquid pipe (7) on sealed tank (2), liquid measuring pipe (4) with annotate liquid pipe (7) intercommunication sealed tank (2).
2. The device for rapidly detecting the expansion rate of concrete according to claim 1, wherein: the outer wall of the detection test mold (1) is provided with a plurality of screw rod lock catches (6), each screw rod lock catch (6) comprises a fixing plate, a screw rod and a nut, one end of each screw rod is hinged to the fixing plate, the other end of each screw rod is in threaded connection with the corresponding nut, the outer wall of the sealed liquid tank (2) is provided with a plurality of lock catch fixing holes (5), each lock catch fixing hole (5) is groove-shaped, and the screw rods of the screw rod lock catches (6) are clamped in grooves of the lock catch fixing holes (5).
3. The device for rapidly detecting the expansion rate of concrete according to claim 1, wherein: the detection test mold (1) is a square box body formed by welding stainless steel plates, the side length of the bottom surface of the detection test mold (1) is 300-500 mm, and the height of a side plate is 100-200 mm.
4. The device for rapidly detecting the expansion rate of concrete according to claim 1, wherein: the sealed liquid cabin (2) is transparent organic glass, and the side length of the inner wall of the sealed liquid cabin (2) is 1-2 mm larger than the detection test mold.
5. The device for rapidly detecting the expansion rate of concrete according to claim 1, wherein: the center of the sealed liquid cabin (2) is provided with a round hole, and the liquid measuring pipe (4) is vertically inserted into the round hole and sealed at the round hole.
6. The device for rapidly detecting the expansion rate of concrete according to claim 1, wherein: the pipe shaft of liquid measuring pipe (4) is equipped with the scale mark that the calculation precision is 0.1ml, the pipe shaft middle part is equipped with zero scale mark, be positive value above the zero scale mark, be the negative value below.
7. The device for rapidly detecting the expansion rate of concrete according to claim 1, wherein: annotate liquid pipe (7) and set up and be close to the edge of sealed liquid cabin (2), be equipped with the rubber buffer on annotating liquid pipe (7), the rubber buffer is fixed annotate the opening part of liquid pipe (7).
8. The device for rapidly detecting the expansion rate of concrete according to claim 1, wherein: the flat piston (3) is a stainless steel thin plate, and a rubber sleeve (8) is wrapped outside the stainless steel thin plate.
9. The device for rapidly detecting the expansion rate of concrete according to claim 1, wherein: concrete is poured in the detection test mould (1), and liquid is injected into the sealed liquid tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021470539.0U CN213210162U (en) | 2020-07-23 | 2020-07-23 | Quick detection device of concrete expansion rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021470539.0U CN213210162U (en) | 2020-07-23 | 2020-07-23 | Quick detection device of concrete expansion rate |
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| Publication Number | Publication Date |
|---|---|
| CN213210162U true CN213210162U (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021470539.0U Active CN213210162U (en) | 2020-07-23 | 2020-07-23 | Quick detection device of concrete expansion rate |
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| CN (1) | CN213210162U (en) |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220401 Address after: 516800 Ping Ling AI Zi Cun, Longmen County, Huizhou City, Guangdong Province Patentee after: GUANGDONG YUESHENG SPECIAL BUILDING MATERIALS Co.,Ltd. Address before: 652100 Huidong bridge, Kuangyuan Town, Yiliang County, Kunming City, Yunnan Province Patentee before: Yunnan Dinggong Building Materials Manufacturing Co.,Ltd. |
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| TR01 | Transfer of patent right |