CN214844533U

CN214844533U - Concrete crack resistance performance experimental apparatus

Info

Publication number: CN214844533U
Application number: CN202121827847.9U
Authority: CN
Inventors: 蒙飞; 徐宏刚; 狄立榆; 王珂
Original assignee: Shaanxi Construction Engineering Group Concrete Co ltd
Current assignee: Shaanxi Construction Engineering Group Concrete Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2021-11-23
Anticipated expiration: 2031-08-06

Abstract

The utility model relates to a concrete detection technology field, and a concrete crack resistance performance experimental apparatus is disclosed, the power distribution box comprises a box body, the fixed bottom plate that is equipped with of inside downside of box divide into retaining chamber and experiment chamber through the bottom plate, the equal fixedly connected with control by temperature change cover of lateral wall about the box, the inside of two control by temperature change covers is fixed respectively and is equipped with hot-blast air-blower and refrigeration assembly, the lateral wall all seted up about the box with control by temperature change cover assorted fresh air inlet, the equal fixedly connected with back flow of lower extreme of two control by temperature change covers, and the one end that homonymy control by temperature change cover was kept away from to two back flows all passes the retaining chamber and extends to the inside setting of experiment chamber, the right side wall lower extreme fixedly connected with pump body of box. The utility model discloses a simulation and accurate control humiture, the simulation is exerted pressure and is strikeed to the concrete test block, can make the experimental result reality of laminating more, richenes the experimental result, and it is convenient to use.

Description

Concrete crack resistance performance experimental apparatus

Technical Field

The utility model relates to a concrete detection technology field especially relates to a concrete crack resistance capability experimental apparatus.

Background

After concrete is formed, the concrete is cracked after being formed due to various reasons such as large cement drying shrinkage, high temperature, unreasonable concrete proportion and the like, and in order to ensure the quality of the concrete, the crack resistance of the concrete needs to be tested to ensure that the concrete can meet the use requirements.

At present, when concrete is tested, a specified amount of concrete test blocks are often placed in a test container, and the cracking resistance of the concrete is judged by observing the time of the crack generation on the surface of the concrete, but in actual use, the temperature and the humidity of the environment for using the concrete are different, the temperature and the humidity are easy to influence the cracking resistance of the concrete, and the existing test device is not easy to fully and accurately adjust the temperature and the humidity around the concrete test blocks, so that the test result is not close to the reality, and therefore, the concrete cracking resistance test device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art when in actual use, the ambient temperature that the concrete used is different, and the humiture all easily causes the influence to the crack resistance nature of concrete, and the experimental apparatus who has is difficult to carry out abundant accurate regulation to humiture around the concrete test block, leads to the experimental result to press close to actual problem inadequately, and the concrete crack resistance performance experimental apparatus who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a concrete crack resistance experiment device comprises a box body, wherein a bottom plate is fixedly arranged at the lower side in the box body and is divided into a water storage cavity and an experiment cavity through the bottom plate, the left side wall and the right side wall of the box body are fixedly connected with temperature control covers, hot air blowers and refrigerating assemblies are respectively and fixedly arranged in the two temperature control covers, the left side wall and the right side wall of the box body are respectively provided with an air inlet hole matched with the temperature control covers, the lower ends of the two temperature control covers are respectively and fixedly connected with return pipes, one ends of the two return pipes, which are far away from the temperature control covers on the same side, penetrate through the water storage cavity and extend into the experiment cavity, the lower end of the right side wall of the box body is fixedly connected with a pump body, the output end of the pump body is communicated with the water storage cavity, the output end of the pump body is fixedly connected with a ring pipe, one end of the water pipe, which is far away from the pump body, and the inner side of the pipe wall of the ring pipe is fixedly connected with a group of water spray heads, and the one end that the annular tube was kept away from to a set of sprinkler bead all runs through the fixed setting in lateral wall upper end in experiment chamber, the preceding lateral wall upper end fixedly connected with intake hopper in retaining chamber, both ends are fixed pegging graft respectively and are had thermodetector and humidity detection meter about the last lateral wall in experiment chamber, the lower lateral wall fixedly connected with laboratory plate in experiment chamber, the opening has been seted up to the preceding lateral wall in experiment chamber, and open-ended one side border is connected with the chamber door through hinge rotation.

Preferably, the left side wall, the right side wall, the front side wall and the rear side wall of the experiment plate are provided with grooves, each groove is connected with an adjusting mechanism and is connected with a movable plate through the adjusting mechanism, each of the upper end and the lower end of the side wall of the movable plate is connected with a slide rod in a sliding mode, two ends of the slide rods, far away from the box body, of the same side are fixedly connected with a detection plate, each of the side walls of the movable plate is fixedly connected with a strain sensor in a plugging mode, and the detection end of each strain sensor is fixedly connected with the side wall of the detection plate of the same side.

Preferably, a hydraulic cylinder is fixedly inserted into the upper end of the box body, an output end of the hydraulic cylinder is fixedly connected with a lifting block, a lower end of the lifting block is fixedly connected with a pressure sensor, and a detection end of the pressure sensor is connected with an impact head.

Preferably, every adjustment mechanism all includes the adjusting screw who rotates the setting at the recess tank bottom, the inside sliding connection of recess has the movable block, and the lateral wall of movable block and adjusting screw's pole wall threaded connection, the upper end of movable block and the lower extreme fixed connection of homonymy movable block.

Preferably, the box door is made of an acrylic transparent plate.

Preferably, the upper end of the front side wall of the experiment cavity is fixedly inserted with a display control assembly.

Compared with the prior art, the utility model provides a concrete crack resistance capability test device possesses following beneficial effect:

1. this concrete crack resistance capability experimental apparatus, through the box that is equipped with, mutually support of chamber door and bottom plate, can place the concrete test block of treating the experiment, through two control by temperature change covers that are equipped with, hot-blast blower, mutually support of refrigeration subassembly and two back flows, can heat or refrigerate the inside temperature of box, the temperature environment when the actual concrete of simulation uses, through the pump body that is equipped with, the raceway, mutually support of looped pipeline and a set of sprinkler bead, can control the inside humidity of box, take into account the humidity detector through the temperature detection that is equipped with, can detect the inside humiture of box, do benefit to accurate control humiture.

2. This anti crack performance experimental apparatus of concrete, through four fly leafs that are equipped with, four pick-up plates, eight slide bars and four strain sensor's mutually supporting, through the dependent stress when detecting the concrete test block fracture, can be more accurate learn the concrete test block fracture phenomenon, whether need not the manual work and observe the concrete test block fracture always, improve the convenience of using, through the pneumatic cylinder that is equipped with, the lift piece, mutually supporting of pressure sensor and striking head, can simulate the influence of applying pressure and impact to the crack resistance of concrete test block, improve the precision of experimental result.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses a simulation and accurate control humiture, the simulation is exerted pressure and is strikeed to the concrete test block, can make the experimental result reality of laminating more, richens the experimental result, and it is convenient to use.

Drawings

Fig. 1 is a schematic structural diagram of a concrete crack resistance experiment apparatus provided by the utility model;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is an enlarged view of a portion a of fig. 2.

In the figure: the device comprises a box body 1, a bottom plate 2, a temperature control cover 3, a hot air blower 4, a refrigeration component 5, a return pipe 6, a pump body 7, a water delivery pipe 8, a ring pipe 9, a water spray head 10, a water inlet hopper 11, a temperature detector 12, a humidity detector 13, an experimental plate 14, a box door 15, a movable plate 16, a detection plate 17, a strain sensor 18, a hydraulic cylinder 19, a lifting block 20, a pressure sensor 21, a collision head 22, an adjusting screw 23, a movable block 24 and a display control component 27.

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.

Referring to fig. 1-3, an experimental apparatus for crack resistance of concrete comprises a box body 1, a bottom plate 2 is fixedly arranged at the lower side of the interior of the box body 1 and is divided into a water storage cavity and an experimental cavity by the bottom plate 2, temperature control covers 3 are fixedly connected to the left and right outer side walls of the box body 1, a hot air blower 4 and a refrigerating assembly 5 are respectively fixedly arranged in the two temperature control covers 3, air inlet holes matched with the temperature control covers 3 are respectively formed in the left and right side walls of the box body 1, return pipes 6 are fixedly connected to the lower ends of the two temperature control covers 3, one ends of the two return pipes 6 far away from the same side temperature control cover 3 penetrate through the water storage cavity and extend into the interior of the experimental cavity, a pump body 7 is fixedly connected to the lower end of the right side wall of the box body 1, the output end of the pump body 7 is communicated with the water storage cavity, a water delivery pipe 8 is fixedly connected to the output end of the pump body 7, a ring pipe 9 is fixedly connected to one end of the water delivery pipe 8 far away from the pump body 7, a set of sprinkler bead 10 of inboard fixedly connected with of pipe wall of toroidal tube 9, and the one end that the toroidal tube 9 was kept away from to a set of sprinkler bead 10 all runs through the fixed setting in lateral wall upper end of experiment chamber, the preceding lateral wall upper end fixedly connected with of retaining chamber is intake and is fought 11, both ends are fixed pegging graft respectively about the last lateral wall in experiment chamber has temperature measurement meter 12 and humidity measurement meter 13, the lower lateral wall fixedly connected with laboratory sheet 14 in experiment chamber, the opening has been seted up to the preceding lateral wall in experiment chamber, and open-ended one side border is connected with chamber door 15 through hinge rotation, refrigeration subassembly 5 comprises semiconductor refrigeration piece and fan, this is prior art, do not do too much to describe repeatedly.

The left side wall, the right side wall, the front side wall and the rear side wall of the experimental plate 14 are respectively provided with a groove, each groove is connected with an adjusting mechanism and is connected with a movable plate 16 through the adjusting mechanism, the upper end and the lower end of the side wall of each movable plate 16 are respectively connected with a sliding rod in a sliding way, one end of each movable plate 16, which is far away from the box body 1, of each sliding rod is fixedly connected with a detection plate 17, the side wall of each movable plate 16 is fixedly inserted with a strain sensor 18, the detection end of each strain sensor 18 is fixedly connected with the side wall of the detection plate 17 at the same side, when the concrete test block is placed on the experimental plate 14, the side walls of the opposite sides of the four detection plates 17 are respectively contacted with the side walls of the four vertical parts of the test block, when the phenomenon of cracking occurs to the concrete, the four detection plates 17 are extruded, so that the strain force can be detected through the strain sensors 18, the cracking of the concrete test block is accurately judged, and the test block does not need to be observed manually all the time.

The upper end of the box body 1 is fixedly inserted with a hydraulic cylinder 19, the output end of the hydraulic cylinder 19 is fixedly connected with a lifting block 20, the lower end of the lifting block 20 is fixedly connected with a pressure sensor 21, the detection end of the pressure sensor 21 is connected with an impact head 22, and the impact head 22 can be driven to move downwards through the hydraulic cylinder 19, so that pressure can be applied to or impact on a test block, and the influence of experiment pressure and impact force on the crack resistance of the test block is realized.

Every adjustment mechanism all includes to rotate the adjusting screw 23 who sets up at the recess tank bottom, and the inside sliding connection of recess has movable block 24, and the lateral wall of movable block 24 and adjusting screw 23's pole wall threaded connection, the upper end of movable block 24 and the lower extreme fixed connection of homonymy movable block 24, can be convenient for people to adjust and make pick-up plate 17 and test block lateral wall contact.

The box door 15 is made of an acrylic transparent plate, so that people can observe the internal experimental condition of the box body 1 conveniently.

The fixed grafting in preceding lateral wall upper end of experiment chamber has the demonstration control assembly 27, can show data such as humiture, pressure value, stress value to can control corresponding component work, this is prior art, does not do too much and describe.

In the utility model, when in use, the box door 15 is opened, the concrete test block with specified size is put on the experimental board 14, the box door 15 is closed at the moment, hot air can be conveyed to the interior of the box body 1 through the hot air blower 4, thereby heating the periphery of the test block, the anti-cracking performance of the concrete test block under the heating environment can be observed at the moment, the hot air blower 4 is closed, the refrigerating assembly 5 is started, the refrigerating assembly 5 can refrigerate and cool the periphery of the test block, the anti-cracking performance of the concrete test block under the low-temperature environment can be observed at the moment, the pump body 7 works, water mist can be sprayed out from a group of water spray heads 10 through the water conveying pipe 8 and the annular pipe 8, thereby humidifying the periphery and the surface of the concrete, the temperature and humidity condition during actual use can be simulated comprehensively, the experimental result is more practical, through the temperature detector 12 and the humidity detector 13, can detect the inside humiture of box 1, the accurate regulation and control of being convenient for.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The concrete crack resistance experiment device comprises a box body (1) and is characterized in that a bottom plate (2) is fixedly arranged at the lower side in the box body (1) and is divided into a water storage cavity and an experiment cavity through the bottom plate (2), the left outer side wall and the right outer side wall of the box body (1) are both fixedly connected with temperature control covers (3), hot air blowers (4) and refrigeration components (5) are respectively and fixedly arranged in the two temperature control covers (3), air inlet holes matched with the temperature control covers (3) are respectively formed in the left side wall and the right side wall of the box body (1), return pipes (6) are respectively and fixedly connected to the lower ends of the two temperature control covers (3), one ends, far away from the temperature control covers (3) on the same side, of the two return pipes (6) respectively penetrate through the water storage cavity and extend to the inner part of the experiment cavity, a pump body (7) is fixedly connected to the lower end of the right side wall of the box body (1), and the output end of the pump body (7) is communicated with the water storage cavity, the output fixedly connected with raceway (8) of the pump body (7), one end fixedly connected with ring pipe (9) of the pump body (7) are kept away from raceway (8), the inboard fixedly connected with a set of sprinkler bead (10) of pipe wall of ring pipe (9), and the one end that ring pipe (9) were kept away from in a set of sprinkler bead (10) all runs through the fixed setting in lateral wall upper end in experiment chamber, preceding lateral wall upper end fixedly connected with intake hopper (11) in water storage chamber, both ends are fixed pegged graft respectively to the last lateral wall left and right sides in experiment chamber and are had temperature detector (12) and humidity detector (13), the lower lateral wall fixedly connected with experiment board (14) in experiment chamber, the preceding lateral wall in experiment chamber has seted up the opening, and open-ended one side border is rotated through the hinge and is connected with chamber door (15).

2. The concrete crack resistance experiment device according to claim 1, wherein grooves are formed in the left side wall, the right side wall, the front side wall and the rear side wall of the experiment plate (14), each groove is connected with an adjusting mechanism and a movable plate (16) through the adjusting mechanism, slide bars are slidably connected to the upper end and the lower end of the side wall of each movable plate (16), a detection plate (17) is fixedly connected to one end, away from the box body (1), of two slide bars on the same side, a strain sensor (18) is fixedly inserted into the side wall of each movable plate (16), and the detection end of each strain sensor (18) is fixedly connected with the side wall of the detection plate (17) on the same side.

3. The concrete crack resistance experiment device according to claim 1, wherein a hydraulic cylinder (19) is fixedly inserted into the upper end of the box body (1), an output end of the hydraulic cylinder (19) is fixedly connected with a lifting block (20), a lower end of the lifting block (20) is fixedly connected with a pressure sensor (21), and a detection end of the pressure sensor (21) is connected with a collision head (22).

4. The concrete crack resistance experiment device according to claim 2, wherein each adjusting mechanism comprises an adjusting screw rod (23) rotatably arranged at the bottom of the groove, a movable block (24) is slidably connected inside the groove, the side wall of the movable block (24) is in threaded connection with the rod wall of the adjusting screw rod (23), and the upper end of the movable block (24) is fixedly connected with the lower end of the movable block (24) on the same side.

5. The concrete crack resistance experiment device according to claim 3, wherein the box door (15) is made of an acrylic transparent plate.

6. The concrete crack resistance experiment device according to claim 1, wherein a display control component (27) is fixedly inserted at the upper end of the front side wall of the experiment cavity.