CN211306770U - Concrete curing device - Google Patents
Concrete curing device Download PDFInfo
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- CN211306770U CN211306770U CN201921204412.1U CN201921204412U CN211306770U CN 211306770 U CN211306770 U CN 211306770U CN 201921204412 U CN201921204412 U CN 201921204412U CN 211306770 U CN211306770 U CN 211306770U
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Abstract
The utility model discloses a concrete curing device in the technical field of concrete curing, which comprises a microwave oven body, wherein the right side of the microwave oven body is provided with a control box, the left side of the inner cavity of the microwave oven body is provided with an inner oven, the left side of the front surface of the microwave oven body is hinged with a cover door, the cover door is lapped with the outer edge of the inner oven, the center of the surface of the cover door is embedded with an observation window, and the control box is respectively provided with a power supply, a switch, a controller, a resistance element, a microwave generator, a temperature control switch and a radiator; the utility model discloses a microwave maintenance test method effectively accelerates the maintenance speed to can reach a novel test method of GB/T50080, GB/T14902, GB/T50081's designing requirement, save space in work efficiency, practice thrift the cost, effectively reduce the emergence of building concrete quality accident.
Description
Technical Field
The utility model relates to a concrete curing technology field, concretely relates to concrete curing means.
Background
After concrete is poured, if the concrete is maintained in hot weather and air drying in time, water in the concrete can evaporate too fast to form a dehydration phenomenon, so that cement particles which form gel cannot be fully hydrated, cannot be converted into stable crystals, and lack of sufficient cohesive force, and thus, flaky or powdery falling can occur on the surface of the concrete. Further, when the concrete does not have sufficient strength, premature evaporation of water causes large shrinkage deformation and cracks due to drying shrinkage. Therefore, the curing of the concrete in the initial stage after the concrete is poured is very important, the curing should be performed immediately after the concrete is finally set, and the curing should be performed immediately after the pouring of the hard concrete is completed.
Concrete curing is the artificial creation of certain humidity and temperature conditions that allow the concrete to be normal or accelerate its hardening and strength growth. Concrete is therefore able to harden and develop strength gradually as a result of the hydration of cement, which requires certain temperature and humidity conditions. If the surrounding environment does not have the condition, the concrete needs to be cured manually. The existing concrete curing method comprises the following steps: firstly, natural maintenance: and (5) separately spraying water for maintenance and spraying a plastic film for maintenance. The former is covered with concrete with a straw mat or the like, and is kept wet by spraying water frequently. The curing time depends on the cement variety, such as ordinary portland cement concrete not less than 7 days and nights. The latter is suitable for tall structures and large-area concrete structures which are difficult to be maintained by sprinkling water, etc. the perchloro-vinyl resin plastic solution is sprayed on the surface of the concrete by a spray gun, a layer of film is formed on the surface of the concrete after the solution is volatilized, the concrete is isolated from the air, the evaporation of water in the concrete is prevented, the normal operation of the hydration of the cement is ensured, and the film can age and fall off automatically after the maintenance is finished. Secondly, steam curing: the concrete member is placed in a curing chamber filled with saturated steam or a mixture of steam and air to accelerate the hardening of the concrete in a high temperature and humidity environment. The curing effect is related to a steam curing system, and comprises the following steps: standing time before steam curing, heating and cooling speed, curing temperature, constant-temperature curing time, relative humidity and the like. The steam curing chamber has a pit type, a vertical kiln type and a tunnel kiln type. But the natural curing and the steam curing have effective curing strength and low efficiency. Concrete curing needs to be carried out by setting a microwave early strength presumption test method, and curing strength needs to be accelerated. Based on this, the utility model designs a concrete curing means to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a concrete curing means to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a concrete curing means, includes the microwave oven body, the right side of microwave oven body is equipped with the control box, the inner chamber left side of microwave oven body is equipped with interior stove, the front surface left side of microwave oven body articulates there is the overhead door, the overhead door has along the overlap joint with the outer of interior stove, the surperficial central authorities of overhead door have inlayed the observation window, be equipped with power, switch, controller, resistive element, microwave generator, temperature detect switch and radiator in the control box respectively, it has switch, controller, resistive element, microwave generator, temperature detect switch and radiator to establish ties respectively between the positive negative pole of power, the heat dissipation window has been seted up to the right flank bottom center of microwave oven body.
Preferably, the controller is connected in parallel with a first relay switch, the first relay switch requires that the power is not lower than 1000w, and the current is not lower than 5A.
Preferably, a second relay switch is connected in parallel between the controller and the resistance element, and the second relay switch requires that the power is not lower than 1500w and the current is not lower than 10A.
Preferably, the power supply is connected in parallel with a touch screen switch and a microwave computer control module, and the touch screen switch is connected in series with the microwave computer control module.
Preferably, the control box is electrically connected with a mains supply socket through a power plug.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a microwave maintenance test method effectively accelerates the maintenance speed to can reach a novel test method of GB/T50080, GB/T14902, GB/T50081's designing requirement, save space in work efficiency, practice thrift the cost, effectively reduce the emergence of building concrete quality accident.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the circuit connection structure of the present invention.
Fig. 3 is a schematic diagram of the circuit connection structure of the heat sink of the present invention.
Fig. 4 is a schematic view of the connection structure of the microwave computer control module of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the microwave oven comprises a microwave oven body 1, a control box 2, an inner oven 3, a cover door 4, an observation window 5, a power supply 6, a switch 7, a controller 8, a resistance element 9, a microwave generator 10, a temperature control switch 11, a radiator 12, a first relay switch 13, a second relay switch 14, a touch screen switch 15, a microwave computer control module 16 and a heat radiation window 17.
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. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a concrete curing means, including microwave oven body 1, the right side of microwave oven body 1 is equipped with control box 2, the inner chamber left side of microwave oven body 1 is equipped with interior stove 3, the front surface left side of microwave oven body 1 articulates there is lid door 4, the outer edge overlap joint of lid door 4 and interior stove 3, the surperficial central authorities of lid door 4 have inlayed observation window 5, be equipped with power 6 in the control box 2 respectively, switch 7, controller 8, resistance element 9, microwave generator 10, temperature detect switch 11 and radiator 12 have been established ties respectively between the positive negative pole of power 6, heat dissipation window 17 has been seted up to the right side bottom of microwave oven body 1.
The controller 8 is connected in parallel with a first relay switch 13, the power required by the first relay switch 13 is not lower than 1000w, and the current is not lower than 5A.
A second relay switch 14 is connected in parallel between the controller 8 and the resistance element 9, and the second relay switch 14 requires power not lower than 1500w and current not lower than 10A.
The power supply 6 is connected in parallel with a touch screen switch 15 and a microwave computer control module 16, and the touch screen switch 15 is connected in series with the microwave computer control module 16.
The control box 2 is electrically connected with a commercial power socket through a power plug.
One specific application of this embodiment is:
the power supply 6 of the microwave oven body 1 is partially cut off and connected with a group of power lines in parallel, a switch 7 is connected in series to the power supply 6, a microwave computer control module 16 is connected in parallel, the microwave computer control module 16 controls the whole work start and stop of the microwave oven body 1, so that the total power of the microwave oven body 1 is reduced to 200 and 300w for output, 1 group of first relay switches 13 are connected in series, the microwave computer control module 16 controls the relay time switch of the microwave oven, and the required power of the first relay switches 13 is not lower than 1000 w. The current is not lower than 5A, 1 group of second relay switches 14 are connected in series to control the controller 8 and the resistance element 9, the purpose of reducing the total power output is achieved, the power required by the second relay switches 14 is not lower than 1500w, the current is not lower than 10A, the microwave computer control module 16 is connected in series with a data port line to be connected to the touch screen switch 15, the touch screen switch 15 can modify the working procedure of the microwave maintenance test method to control the prefabricated microwave computer control module 16 to work, maintenance at different time corresponding to different grades of concrete is achieved, and as the working environment temperature of the microwave generator 10 is too high, a radiator 12 controlled by the temperature control switch 11 must be connected in series to perform intermittent constant-temperature heat radiation on the electric elements.
Preparation work, various materials and tools needed for mixing concrete. The used materials refer to GB/T50080 Standard of Performance test methods of common concrete mixtures and GB/T14902 Standard for mixing common concrete. The compression strength test of the concrete test piece is preferably completed within the age of 3d +/-1 h or 7d +/-2 h, and the test is carried out according to the specification of the standard of the test method for the mechanical property of common concrete (GB/T50081).
The concrete sample is put into a test mould, and the test piece is formed according to the regulations of the current national standard GB/T50081 of the standard for testing the mechanical properties of common concrete. And (3) testing the mould by using 70.7 × 3 standard mortar, brushing a layer of release agent or engine oil before the mixed concrete is placed into the mould, uniformly pouring the concrete into the mould, inserting the concrete according to the standard, flatly pressing the surface mould by using a spatula, covering a layer of maintenance film on the surface of the test piece, vibrating the maintenance film by using uniform moulds such as a plastic maintenance film and the like, and putting the maintenance film on a vibrating instrument to vibrate the final bubbles in the mould without excessive vibration. The test model is preferably a plastic test model of 100mm × 100mm × 100mm or 70.7mm × 70.7mm × 70.7mm, when the maximum particle size of the coarse aggregate is larger than 25mm, a plastic test model of 100mm × 100mm × 100mm is preferably adopted, and when the maximum particle size of the coarse aggregate is not larger than 25mm, a triple plastic test model of 70.7mm × 70.7mm × 70.7mm is adopted.
And cleaning redundant concrete impurities outside the test mold.
Cleaning dust in the microwave oven body 1, isolating the microwave instrument from the bottom of a test mold by using oil absorption paper, putting a test piece with the mold into the microwave oven body 1, paving a layer of maintenance paper capable of absorbing water and oil on a bottom plate of an inner oven 3 in advance, wherein the rated input power of the microwave oven body 1 is preferably 1180-1300W, the microwave output power is preferably 700-800W, the rated frequency is 50Hz, the rated microwave frequency is 2300-2500 MHz, and performing flat plate maintenance.
Turning on a power supply 6, precuring a test piece in an inner furnace 3 for 2h, and then automatically performing heating cycles, wherein each curing cycle is working for 30s, standing for 5min, and the total working time is preferably 5 h;
after the maintenance cycle is finished, the power supply is turned off for 6 min, the test piece with the mold is taken out after 30min, the mold is removed, then the compression test is carried out, and the thickness of the test piece is 100mm3The cubic test piece is subjected to a compressive strength test according to the regulations of the existing national standard GB/T50081 of the test method standard for mechanical properties of common concrete; for 70.7mm3The cubic test piece is subjected to a compressive strength test according to the provisions of the existing industry standard JGJ/T70 of building mortar basic performance test method standard, and the accelerated curing strength of the cubic test piece is measured.
The time from the power off to the compression strength test should not exceed 50min, and the arithmetic average of the accelerated maintenance strength of the three test pieces is 70.7mm3The strength value of the cubic test piece is not multiplied by a coefficient, and when the standard curing 28d compressive strength is estimated by the accelerated curing strength, a strength relation between the strength value and the standard curing is established in advance through tests.
In conclusion, the microwave maintenance test method and the equipment manufacturing scheme determined above are the method with the fastest maintenance speed in the corresponding national standards at present, and are a novel test method capable of meeting the design requirements of GB/T50080, GB/T14902 and GB/T50081, and compared with the method in the current national standards (early presumed concrete strength test method standard JGJ/T15-2008), the arrival of the method can improve the working efficiency by at least 4 times and save the space by 4 times. The cost is saved by 10 times. The strength of the concrete in the 28-day age period is predicted in advance, and the quality accidents of the building concrete are reduced.
The control mode of the utility model is automatically controlled by the microwave computer control module 16, the control circuit of the microwave computer control module 16 can be realized by simple programming of technicians in the field, and the power supply 6 also belongs to the common knowledge in the field, so the utility model does not explain the control mode and the circuit connection in detail.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a concrete curing means, includes microwave oven body (1), its characterized in that: the right side of the microwave oven body (1) is provided with a control box (2), the left side of the inner cavity of the microwave oven body (1) is provided with an inner oven (3), the left side of the front surface of the microwave oven body (1) is hinged with a cover door (4), the cover door (4) is lapped with the outer edge of the inner oven (3), an observation window (5) is embedded in the center of the surface of the cover door (4), a power supply (6), a switch (7), a controller (8), a resistance element (9), a microwave generator (10), a temperature control switch (11) and a radiator (12) are respectively arranged in the control box (2), a switch (7), a controller (8), a resistance element (9), a microwave generator (10), a temperature control switch (11) and a radiator (12) are respectively connected in series between the anode and the cathode of the power supply (6), the bottom center of the right side surface of the microwave oven body (1) is provided with a heat radiation window (17).
2. A concrete curing device as defined in claim 1, wherein: the controller (8) is connected with a first relay switch (13) in parallel, the power required by the first relay switch (13) is not lower than 1000w, and the current is not lower than 5A.
3. A concrete curing device as defined in claim 2, wherein: and a second relay switch (14) is connected in parallel between the controller (8) and the resistance element (9), wherein the required power of the second relay switch (14) is not lower than 1500w, and the current is not lower than 10A.
4. A concrete curing device as defined in claim 3, wherein: the microwave oven is characterized in that a touch screen switch (15) and a microwave computer control module (16) are connected to the power supply (6) in parallel, and the touch screen switch (15) and the microwave computer control module (16) are connected in series.
5. A concrete curing device as defined in claim 4, wherein: the control box (2) is electrically connected with a commercial power socket through a power plug.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921191723 | 2019-07-26 | ||
| CN2019211917239 | 2019-07-26 |
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| Publication Number | Publication Date |
|---|---|
| CN211306770U true CN211306770U (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921204412.1U Expired - Fee Related CN211306770U (en) | 2019-07-26 | 2019-07-29 | Concrete curing device |
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| CN (1) | CN211306770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110281367A (en) * | 2019-07-26 | 2019-09-27 | 衡水积土科技有限公司 | A kind of concrete curing device and method |
-
2019
- 2019-07-29 CN CN201921204412.1U patent/CN211306770U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110281367A (en) * | 2019-07-26 | 2019-09-27 | 衡水积土科技有限公司 | A kind of concrete curing device and method |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200821 Termination date: 20210729 |
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| CF01 | Termination of patent right due to non-payment of annual fee |