CN201688884U - Device for simulating and detecting autogenous volume deformation of concrete - Google Patents
Device for simulating and detecting autogenous volume deformation of concrete Download PDFInfo
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- CN201688884U CN201688884U CN2010202991576U CN201020299157U CN201688884U CN 201688884 U CN201688884 U CN 201688884U CN 2010202991576 U CN2010202991576 U CN 2010202991576U CN 201020299157 U CN201020299157 U CN 201020299157U CN 201688884 U CN201688884 U CN 201688884U
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Abstract
The utility model relates to the field of concrete, provides a detecting device for autogenous volume deformation of concrete, which is capable of a simulating experimental environment consistent to a concrete construction field environment, while the detected concrete deformation condition is consistent to construction field concrete deformation condition. The device comprises a cabinet, the cabinet is provided with a hollow thermal insulation sample cavity, thermal insulation layers made of heat insulating materials are arranged on side boards and a cover of the cabinet, temperature detecting devices installed inside the thermal insulation sample cavity include at least one temperature sensor, a refrigerator and a heater are installed the inside thermal insulation sample cavity, a strain gauge formed integrally along with a sample is disposed inside the thermal insulation sample cavity, and the temperature detecting devices and the strain gauge are connected with a measuring and controlling system outside the cabinet. The adopted device has balanced inner temperature and fine stability, difference between the detected concrete deformation condition and field conduction is small, determining on concrete characteristics has practical application value, and further, the device can automatically track the whole temperature rise process of concrete.
Description
Technical field
The utility model relates to concrete field, relates in particular to a kind of device of analog detection concrete autogenous volumetric deformation.
Background technology
The concrete quality that is widely used in construction works such as science of bridge building, bridge, railway, dykes and dams plays decisive role to the quality of building, and the key factor that influences concrete quality is exactly the hydrated cementitious thermal characteristics.Cement has produced a large amount of heats in hydration process, thereby makes concrete temperature rising, volume increase, change of shape, and deflection is excessive will to cause internal fissure, or forms the cavity, loosely organized, has a strong impact on the intensity and the quality of buildings.Concrete autogenous volumetric deformation mainly is that the hydration rate of Binder Materials and temperature interact because the aquation of Binder Materials causes, temperature is high more, and hydration heat is fast more, and temperature is high more, and cubic deformation is big more.Pair device that the concrete hydrating thermal characteristics detects is arranged at present, parameters such as the concrete thermal discharge of real-time follow-up, temperature, draw concrete temperature rise curve, but concrete heating curve can't directly react its deformation process, even temperature rise curve is identical, also can produce different deformation quantities because of different factors such as concrete proportioning.Therefore must accurately measure concrete property, just can guarantee construction engineering quality.
The real process of the test standard of the concrete deformation of domestic current measurement at present and experimental technique and the distortion of on-the-spot mass concrete has certain gap.Available coagulation soil deformation test method is, concrete is made cylindric test specimen, test specimen is positioned in the test specimen case of long 400mm, wide by 200, dark 600mm, and the test specimen case can hold 2 test specimens, and test specimen is 50mm at interval.In the preparation process test specimen central authorities put into the differential type strain ga(u)ge and test specimen one-body molded, then test specimen is put into the constant test bay about 20 ℃ of room temperature, reading this concrete sample at difference internal temperature values and deflection constantly by the differential type strain ga(u)ge, was a test period with 7 days, 14 days or 28 days.And the temperature in the whole hydration heat process of on-the-spot mass concrete will not be stabilized in about 20 ℃, and its temperature variation is from low to high, then from high to low the process of slow variation again.Do not meet field condition as test temperature with 20 ℃, so its measured concrete deflection and on-the-spot practical distortion amount there is very big-difference.
The utility model content
The technical matters that the utility model solved provide a kind of can the simulation experimental enviroment consistent with the concrete construction site environment, the pick-up unit of the concrete deformation situation of the surveying concrete autogenous volumetric deformation consistent with the concrete on construction site deflection.
The utility model also provides the device of analog detection concrete autogenous volumetric deformation, comprises cabinet, and described cabinet has the insulation test specimen chamber of hollow, and the side plate of cabinet and case lid are provided with the heat-insulation layer that heat-barrier material is made; In insulation test specimen chamber temperature-detecting device is installed, described temperature-detecting device is at least one temperature inductor; In insulation test specimen chamber, refrigerator and well heater are installed; In insulation test specimen chamber, be provided with and the integrated strainometer of test specimen; The said temperature pick-up unit is connected with the outer TT﹠C system of strainometer and cabinet.
Described refrigerator is a semiconductor cooler, comprise, be installed in the cool-guiding body of cabinet side board inboard, conductor refrigeration sheet and heat conductor are installed in the heat-insulation layer of cabinet from inside to outside successively, apply hot silicone grease of thermal conductance and applying between the huyashi-chuuka (cold chinese-style noodles) of described conductor refrigeration sheet and the cool-guiding body, apply hot silicone grease of thermal conductance and applying between the hot side of described conductor refrigeration sheet and the heat conductor, heat-insulation layer at cabinet is equipped with the hydronic refrigeratory of employing, and described refrigeratory adopts heat conduction to be connected with heat conductor.
Described refrigeratory adopts chilled water refrigeration, and the level height of the water delivering orifice of refrigeratory is higher than water inlet.
Described refrigerator adopts coil pipe, and above-mentioned coil pipe passes through compressor cooling.
Described well heater comprises the heating tape that is installed on the different side plate inwalls with refrigerator, heating power 500-1000W.
Inboard in the heating tape is provided with soaking plate, and soaking plate is parallel to the test specimen cavity wall, and soaking plate and heating tape distance are 8-12mm.
Temperature-detecting device in the insulation test specimen chamber comprises, be installed in the test specimen oven temperature, degree sensor at middle part, insulation test specimen chamber, be installed in the cool-guiding body temperature sensor on the cool-guiding body, be installed in the heating tape temperature sensor on the heating tape or/and be installed in the soaking plate temperature sensor of soaking plate; Outside insulation test specimen chamber the ambient temperature sensor is installed also, above-mentioned ambient temperature sensor also is connected with described programmable observing and cotnrol module PLC.
The filling thickness of described heat-insulation layer is not less than 100mm.
Described insulation test specimen chamber is of a size of, and length is not less than 500mm, and width is not less than 250mm, and the degree of depth is not less than 600mm.
The beneficial effects of the utility model are, a kind of device of mass concrete deformation process of accurately construction simulation scene is provided, temperature equalization, good stability in the device, measured concrete deformation situation and field condition differ very little, and the judgement of concrete property is had actual application value.Simultaneously, can the concrete intensification overall process of full-automatic tracking; Has visualized monitoring function.
Description of drawings
Fig. 1 is a concrete autogenous volumetric deformation in-site modeling device stereographic map of the present utility model.
Fig. 2 is the inner scheme of installation of test specimen case.
Fig. 3 is the scheme of installation of refrigerator.
Fig. 4 is the scheme of installation of heating tape and soaking plate.
Fig. 5 is the concrete sample structural representation.
Fig. 6 is the TT﹠C system process flow diagram.
Be labeled as among the figure: 1-concrete sample, 2-insulation test specimen chamber, 4-strainometer, 5-heat-insulation layer, the 6-case lid, 7-side plate, 9-cool-guiding body, 10-conductor refrigeration sheet, 11-heat conductor, 12-heating tape, the 13-soaking plate, 15-water delivering orifice, 16-water inlet, the 17-refrigeratory, 21-test specimen oven temperature, degree sensor, 22-cool-guiding body temperature sensor, 23-heating tape temperature sensor, 24-soaking plate temperature sensor, 25-ambient temperature sensor.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is further specified.
As depicted in figs. 1 and 2, be provided with the insulation test specimen chamber 2 of hollow in the cabinet of the experimental provision that the utility model adopted, the quantity in insulation test specimen chamber 2 can be determined according to the group number of test specimen.The attemperating unit that each test specimen chamber 2 all is provided with separately can make the test process in each test specimen chamber 2 independent separately, also can do the test of condition of different temperatures simultaneously, perhaps does the test of different cycles.
The size in insulation test specimen chamber 2 determines that according to the size of concrete sample for the accuracy that guarantees to test, length is not less than 500mm, and width is not less than 250mm, and the degree of depth is not less than 600mm.In order to guarantee in the experiment that the influence that insulation test specimen chamber 2 temperature inside are not changed by extraneous room temperature is provided with the heat-insulation layer of making as the heat-barrier material of asbestos, hollow thermal insulation board one class 5 on the side plate 7 of cabinet and the case lid 6.Take all factors into consideration heat insulation effect and equipment volume, the filling thickness of heat-insulation layer 5 is not less than 100mm.
For the temperature that detects concrete sample 1 and and the change curve of deflection, in insulation test specimen chamber 2, be provided with as shown in Figure 4 with the integrated differential type strain ga(u)ge 4 of test specimen.Do not have temp sensing function as the strainometer that adopts, then need in detecting concrete sample 1, bury the temperature inductor that can detect concrete sample 1 internal temperature in addition underground.
In insulation test specimen chamber 2, at least one temperature inductor is installed, even the temperature in insulation test specimen chamber 2 is adjusted and controlled in temperature variation in the detection insulation test specimen chamber 2 and realization.The quantity of temperature-detecting device is set to a plurality of as required at different parts.
The temperature control in insulation test specimen chamber 2 and adjustment are that employing is equipped with refrigerator in insulation test specimen chamber 2 and well heater is realized.
Shown in Figure 3 is the structural representation that adopts semiconductor cooler, and uniform installation cool-guiding body 9 on the inboard of cabinet side board 7 is beneficial to and makes evenly refrigeration in the test specimen chamber 2.Conductor refrigeration sheet 10 and heat conductor 11 are installed in the heat-insulation layer 5 of cabinet from inside to outside successively, apply hot silicone grease of thermal conductance and applying between the huyashi-chuuka (cold chinese-style noodles) of conductor refrigeration sheet 10 and the cool-guiding body 9, apply hot silicone grease of thermal conductance and applying between the hot side of conductor refrigeration sheet 10 and the heat conductor 11, be equipped with outside the heat-insulation layer 5 of cabinet and adopt recirculated cooling water or air-cooled refrigeratory 17, refrigeratory 17 adopts heat conduction to be connected with heat conductor 11.The heat that for this reason is incubated in the test specimen chamber 2 can be delivered to outside the cabinet by cool-guiding body 9, conductor refrigeration sheet 10, heat conductor 11, and realizes the inside in insulation test specimen chamber 2 is cooled off through refrigeratory 17 coolings.In the cooling of the recirculated water shown in Fig. 2 structure, in order to guarantee the cooling effect of refrigerator 17, chilled water can fully be circulated in refrigeratory 17, the level height of the water delivering orifice 15 of refrigeratory 17 is higher than water inlet 16.For the type of cooling, also can adopt the compressor refrigerator, in insulation test specimen chamber 2, coil pipe is installed, realize refrigeration by compressor operating.Because the cooling velocity of semiconductor cooler is fast, volume is little, do not have plurality of advantages such as wearing and tearing, do not use refrigerant, semiconductor cooler is as preferred version.
As shown in Figure 4, easy for installation for refrigeratory and well heater, well heater is the heating tape 12 that is installed on the different side plate inwalls with refrigerator, modes such as resistance wire heating, radiation heating, heat pump, infrared radiation heating, electromagnetic wave heating, its heating power 500-1000W can be adopted in heating tape 12.With heating tape 12 heating, cause the heating inequality in the insulation test specimen chamber 2 for directly easily, therefore 12 inboard is provided with soaking plate 13 in the heating tape, and soaking plate 13 is parallel to the inwall in insulation test specimen chamber 2, and soaking plate 13 is good with heating tape 12 distances for 8-12mm.After soaking plate 13 was subjected to heating tape 12 heating, its area of dissipation was bigger than heating tape 12, and it is more even to dispel the heat.
In experimentation, in order to detect and control each position and temperature variation in the insulation test specimen chamber 2 effectively, temperature-detecting device in the insulation test specimen chamber 2 can be provided with a plurality of in such a way, as is installed in the environment temperature that the test specimen oven temperature, degree sensor 21 of insulation 2 middle parts, test specimen chamber between two concrete samples 1 detects insulation test specimen chamber 2; Be installed in the cool-guiding body temperature sensor 22 on the cool-guiding body 9, detect the environment temperature of cool-guiding body 9 installation positions, improve the control accuracy of cool-guiding body 9; Be installed in the heating tape temperature sensor 23 on the heating tape 12 or be installed in the soaking plate temperature sensor 24 of soaking plate; Improve the control accuracy of heating tape 12, install simultaneously as heating tape temperature sensor 23 and soaking plate temperature sensor 24, its control accuracy is higher.Even also can in time regulate and control the power of well heater or refrigerator like this at the dynamic process of heating or refrigeration by the temperature of analyzing each parts, make temperature precisely controlled.Temperature sensor can be selected platinum resistance Pt100 or K type thermopair for use.
As shown in Figure 2, can also outside insulation test specimen chamber 2, ambient temperature sensor 25 be installed also simultaneously.
Shown in the TT﹠C system process flow diagram of Fig. 6, the temperature sensor of temperature-detecting device, strainometer 4 and ambient temperature sensor 25 all are connected with the programmable observing and cotnrol module PLC of the outer TT﹠C system of cabinet, realize that experimentation is omnidistance to detect and control.For the observation to test situation directly perceived, TT﹠C system of the present utility model can adopt PLC programmable observing and cotnrol module to be transferred to the mode that computing machine carries out data processing by data bus, the user-centered interface of Visual Basic software is combined with programmable observing and cotnrol module PLC programmable observing and cotnrol module, visual and accurate overall process with numeral demonstration and curve mode and demonstration test, automatically store process of the test data and curve, print data, experiment finish, and the back is automatic shuts down.
Embodiment:
Adopt analog detection concrete autogenous volumetric deformation Device Testing method of the present utility model, adopt following steps:
A, concrete mixed make concrete sample 1, in the concrete sample of making 1, as shown in Figure 5,1 central authorities bury strainometer 4 underground at concrete sample, and one-body molded; Strainometer 4 adopts differential type resistance.Strainometer 4 has the effect that detects concrete sample 1 internal temperature and deflection.
B, for the ease of improving the contrast of accuracy of detection and data, be one group with at least two concrete samples 1, and put into and be incubated test specimen chamber 2; As shown in Figure 1, employing be two insulation test specimen chambeies 2, put into two concrete samples 1 respectively in each insulation test specimen chamber 2.
C, cover case lid 6, heat isolation is carried out with external environment condition in sealing insulation test specimen chamber 2 as much as possible.Detect temperature in the warm test specimen chamber 2 by being arranged on temperature-detecting device in the insulation test specimen chamber 2, with the input of the temperature in the detected insulation test specimen chamber 2 TT﹠C system, after treatment, according to the internal temperature in insulation test specimen chamber 2 and the difference of simulated environment temperature, control refrigerator or heater starting or stop to make the temperature variation curve in the insulation test specimen chamber 2 consistent with concrete scene temperature change curve;
D, in above-mentioned steps c, detect the internal temperature and the deflection of concrete samples 1 by strainometer 4, and the input TT﹠C system, obtain the internal temperature of concrete sample 1 and the change curve of deflection;
E, as requested, one, standard was 7 days, 14 days or 28 days experimental period, after satisfying standard-required experimental period, temperature variation curve, the internal temperature of concrete sample 1 and the change curve of deflection in the insulation test specimen chamber 2 are obtained the test experience data by the anti-strong electromagnetic ability of having of TT﹠C system multifunction programable control module, Visual Basic software and Computer Processing, and print, finish the simulated field test experience of concrete autogenous volumetric deformation.
Claims (10)
1. the device of analog detection concrete autogenous volumetric deformation comprises cabinet, it is characterized in that:
Described cabinet has the insulation test specimen chamber (2) of hollow, and side plate of cabinet (7) and case lid (6) are provided with the heat-insulation layer (5) that heat-barrier material is made;
In insulation test specimen chamber (2) temperature-detecting device is installed, described temperature-detecting device is at least one temperature inductor;
In insulation test specimen chamber (2), refrigerator and well heater are installed;
In insulation test specimen chamber (2), be provided with and the integrated strainometer of test specimen (4);
The said temperature pick-up unit is connected with the outer TT﹠C system of strainometer (4) and cabinet.
2. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 1 is characterized in that: described refrigerator is a semiconductor cooler, comprise,
Be installed in the cool-guiding body (9) of cabinet side board inboard,
Conductor refrigeration sheet (10) and heat conductor (11) are installed in the heat-insulation layer (5) of cabinet from inside to outside successively,
Apply hot silicone grease of thermal conductance and applying between the huyashi-chuuka (cold chinese-style noodles) of described conductor refrigeration sheet (10) and the cool-guiding body (9), apply the hot silicone grease of thermal conductance between the hot side of described conductor refrigeration sheet (10) and the heat conductor (11) and also fit,
Be equipped with outside the heat-insulation layer (5) of cabinet and adopt hydronic refrigeratory (17), described refrigeratory (17) adopts heat conduction to be connected with heat conductor (11).
3. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 2 is characterized in that: described refrigeratory (17) adopts chilled water refrigeration, and the level height of the water delivering orifice (15) of refrigeratory (17) is higher than water inlet (16).
4. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 1 is characterized in that: described refrigerator adopts coil pipe, and above-mentioned coil pipe passes through compressor cooling.
5. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 1 is characterized in that: described well heater comprises the heating tape (12) that is installed on the different side plate inwalls with refrigerator, heating power 500-1000W.
6. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 5, it is characterized in that: the inboard of (12) is provided with soaking plate (13) in the heating tape, soaking plate (13) is parallel to test specimen chamber (2) inwall, and soaking plate (13) is 8-12mm with heating tape (12) distance.
7. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 1, it is characterized in that: the temperature-detecting device in the insulation test specimen chamber (2) comprises, be installed in the test specimen oven temperature, degree sensor (21) at middle part, insulation test specimen chamber (2), be installed in the cool-guiding body temperature sensor (22) on the cool-guiding body (9), be installed in the heating tape temperature sensor (23) on the heating tape (12) or/and be installed in the soaking plate temperature sensor (24) of soaking plate;
Outside insulation test specimen chamber (2) ambient temperature sensor (25) is installed also, above-mentioned ambient temperature sensor (25) also is connected with described programmable observing and cotnrol module PLC.
8. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 1 is characterized in that: the filling thickness of described heat-insulation layer (5) is not less than 100mm.
9. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 1 is characterized in that: described insulation test specimen chamber (2) is of a size of, and length is not less than 500mm, and width is not less than 250mm, and the degree of depth is not less than 600mm.
10. its device of analog detection concrete autogenous volumetric deformation as claimed in claim 1 is characterized in that: described TT﹠C system is formed by having multifunction programable control module PLC, Visual Basic software and computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202991576U CN201688884U (en) | 2010-08-20 | 2010-08-20 | Device for simulating and detecting autogenous volume deformation of concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202991576U CN201688884U (en) | 2010-08-20 | 2010-08-20 | Device for simulating and detecting autogenous volume deformation of concrete |
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| CN201688884U true CN201688884U (en) | 2010-12-29 |
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| CN2010202991576U Expired - Lifetime CN201688884U (en) | 2010-08-20 | 2010-08-20 | Device for simulating and detecting autogenous volume deformation of concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936704A (en) * | 2010-08-20 | 2011-01-05 | 四川嘉华企业（集团）股份有限公司 | Analog detecting method for concrete grown volume deformation and device thereof |
| CN113390373A (en) * | 2021-07-22 | 2021-09-14 | 广东合众路桥科技股份有限公司 | Wireless string type strain sensing system |
| CN113819864A (en) * | 2021-08-23 | 2021-12-21 | 中建三局第三建设工程有限责任公司 | Concrete strain measuring device |
-
2010
- 2010-08-20 CN CN2010202991576U patent/CN201688884U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936704A (en) * | 2010-08-20 | 2011-01-05 | 四川嘉华企业（集团）股份有限公司 | Analog detecting method for concrete grown volume deformation and device thereof |
| CN113390373A (en) * | 2021-07-22 | 2021-09-14 | 广东合众路桥科技股份有限公司 | Wireless string type strain sensing system |
| CN113819864A (en) * | 2021-08-23 | 2021-12-21 | 中建三局第三建设工程有限责任公司 | Concrete strain measuring device |
| CN113819864B (en) * | 2021-08-23 | 2023-12-05 | 中建三局第三建设工程有限责任公司 | Concrete strain measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101229 Effective date of abandoning: 20111228 |