CN109254032A - A kind of device for test hydration heat of cement under steady temperature - Google Patents
A kind of device for test hydration heat of cement under steady temperature Download PDFInfo
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- CN109254032A CN109254032A CN201811443799.6A CN201811443799A CN109254032A CN 109254032 A CN109254032 A CN 109254032A CN 201811443799 A CN201811443799 A CN 201811443799A CN 109254032 A CN109254032 A CN 109254032A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/48—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
- G01N25/4846—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation for a motionless, e.g. solid sample
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Abstract
The present invention relates to a kind of for testing the device of hydration heat of cement under steady temperature, which includes computer, moisture recorder, two metal boxes, triglyceride case for being equipped with automatic temperature control system.It is equipped with work durm in one metal box, the foam backing plate that surrounding is fixed with sheeting caps is equipped with below the work durm；Wide-mouth vacuum flask is fixed in work durm, the bottleneck of the vacuum flask is equipped with polystyrene foam plastics lid；Foamed plastics covers is inserted with temp probe I ~ IV respectively, which is connected with moisture recorder respectively；Triglyceride case is equipped in another metal box, the bottom of the triglyceride case is respectively equipped with refrigeration compressor and heater；Triglyceride case is equipped with circulation perfusion tube II, which is connected with the circulation perfusion tube I of insertion foamed plastics lid through metering pump；Moisture recorder, refrigeration compressor and heater pass through data line respectively and are connected with computer.The present invention may be implemented to test automatically, and accuracy is high.
Description
Technical field
The present invention relates to cement detection technique fields more particularly to a kind of for testing hydration heat of cement under steady temperature
Device.
Background technique
A series of chemical reaction has occurred in cement hydration process between each component and water, and releases a large amount of heats of hydration,
The hydration reaction of cement is a very long dynamic process, and the method for existing test hydration heat of cement mainly has dissolution thermal method
(basic taper method) and direct measuring method.
Direct measuring method (GB/T 2022-1980) be it is a kind of it is easy to operate, be not required to other chemical reagent and free of contamination
Standard test method.Its principle is: cement mortar aquation in specific environment, then puts aside and dissipates according to hydrated cementitious heat
Lose number acquire the heat of hydration of cement each age.Direct method can measure rate of heat release and heat release of the cement in hydration process
Amount also more can accurately calculate the thermal discharge of cement slurry early period in hydration reaction, but due to the aggregation of thermal discharge, with
The raising of slurry temperature, the hydration rate and thermal discharge of cement are also unavoidably affected.
And dissolving thermal method (GB/T 12959-1991) is then the heat chemically reacted according to the law of Hess in heat chemistry
Effect is only related with the initial state of system and final state, and unrelated with the approach of reaction and proposition.It is in calorimeter ambient temperature
It is molten that the cement of unhydrated cement and aquation to certain age is placed on certain density standard acid respectively under conditions of certain
It is dissolved in liquid, then measures the difference of heat of solution, the heat of hydration released within regulation age as the cement.Dissolve the essence of thermal method
True property will be much higher than direct method, but operating process is excessively loaded down with trivial details, is unable to system accurately records hydrated cementitious heat release change curve,
It also needs to consider that resource cost is larger, the not high enough this kind of objective problem of cost performance simultaneously.
Nowadays, the appearance of isothermal calorimeter has greatly improved the accuracy of direct method measurement hydration heat amount, by
There are radiators between cylinder and outer cylinder in the inner, the heat that slurry is assembled because of hydration reaction can be discharged, and
Heat release power is measured, extraneous constant temperature system can also provide inner cylinder one stable isoperibol, substantially increase calculating slurry
The accuracy of hydration heat amount under t arbitrary temp.But such method is limited since device is designed and consumed energy, and instrument can only be used
In the measurement of cement paste, and temperature variation curve can not be captured；In addition, since the size to sample has stringent limitation, it is too small
Sample whether have it is enough it is representative be also the problem of being worth discussion.Meanwhile existing equipment is lacked in aquation Thermal test
The environment of weary steady temperature.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of automatic test, accuracy it is high for being surveyed under steady temperature
Try the device of hydration heat of cement.
To solve the above problems, it is of the present invention a kind of for testing the device of hydration heat of cement under steady temperature,
Be characterized in that: the device includes computer, moisture recorder, two metal boxes, glycerol three for being equipped with automatic temperature control system
Rouge case；It is equipped with work durm in one metal box, the foam backing plate that surrounding is fixed with sheeting caps is equipped with below the work durm；It is described
Wide-mouth vacuum flask is fixed in work durm, the bottleneck of the vacuum flask is equipped with polystyrene foam plastics lid；The foamed plastics covers
It is inserted with temp probe I, temp probe II, temp probe III, temp probe IV respectively, the temp probe I, temp probe II, temperature
Degree probe III, temp probe IV are connected with the moisture recorder respectively；The glycerol three is equipped in another described metal box
The bottom of rouge case, the triglyceride case is respectively equipped with refrigeration compressor and heater；It is defeated that the triglyceride case is equipped with circulation
Liquid pipe II, the circulation perfusion tube II are connected with the circulation perfusion tube I for being inserted into the foamed plastics lid through metering pump；The thermograph
Instrument, the refrigeration compressor and the heater pass through data line respectively and are connected with the computer.
The end of the temp probe I and the temp probe IV is close to the bottom of the foamed plastics lid.
The end of the temp probe II is located at the top of circulation I end of perfusion tube, and is located at the temp probe I
Or the lower section of IV end of temp probe.
The end of the temp probe III is close to the bottom of the vacuum flask.
Compared with the prior art, the present invention has the following advantages:
1, the present invention controls vacuum flask entoplasm using the entrance temperature difference of automatic temperature control system and intelligent measurement circulation transfusion system
Body and environment temperature are reduced or are increased circulation infusion by starting refrigeration machine or heater when the entrance temperature difference exceeds limit value
Temperature moment control in vacuum flask is being differed less than 0.5 DEG C of range with experiment preset temperature by the fluid temperature in system
Interior, to provide under stationary temperature environment for cement slurry, (this isoperibol refers to that the internal temperature of cement slurry is kept
Stablize, rather than refer to that the temperature of outside air temperature either water-bath system is constant).
2, the present invention can test cement slurry under a certain steady temperature continue heat release true thermal discharge obtained and
Rate of heat release, to eliminate the hydration heat amount error due to caused by the rising of slurry internal temperature.
3, the present invention can satisfy the requirement of general aquation experiment, and accuracy is by half significantly larger than original adiabatic calorimetry
Instrument, and compared compared with isothermal calorimeter, the scope of application is wider, and levels of precision is higher.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 is the structural diagram of the present invention.
In figure: 1-automatic temperature control system；2-data lines；3-moisture recorders；4-foam backing plates；5-sheeting caps；
6-work durms；7-metal boxes；8-vacuum flask；9-foamed plastics lids；10-temp probes I；11-temp probes II；12-temperature
Degree probe III；13-temp probes IV；14-circulation perfusion tubes I；15-metering pumps；16-circulation perfusion tubes II；17-glycerol
Three rouge casees；18-refrigeration compressors；19-heaters.
Specific embodiment
As shown in Figure 1, a kind of for testing the device of hydration heat of cement under steady temperature, which includes one and is equipped with certainly
Computer, moisture recorder 3, two metal boxes 7, triglyceride casees 17 of dynamic temperature-controlling system 1.
It is equipped with work durm 6 in one metal box 7, the surrounding foam backing plate 4 fixed with sheeting caps 5 is equipped with below the work durm 6；
Wide-mouth vacuum flask 8 is fixed in work durm 6, the bottleneck of the vacuum flask 8 is equipped with polystyrene foam plastics lid 9；On foamed plastics lid 9
It is inserted with temp probe I 10, temp probe II 11, temp probe III 12, temp probe IV 13 respectively, the temp probe I 10, temperature
Pop one's head in II 11, temp probe III 12, temp probe IV 13 is connected with moisture recorder 3 respectively, for recording the slurry in vacuum flask 8
The temperature variation curve of the triglyceride of body, air and disengaging vacuum flask.
Triglyceride case 17 is equipped in another metal box 7, the bottom of the triglyceride case 17 is respectively equipped with refrigerant compression
Machine 18 and heater 19；Triglyceride case 17 is equipped with circulation perfusion tube II 16, which connects through metering pump 15
There is the circulation perfusion tube I 14 of insertion foamed plastics lid 9；Moisture recorder 3, refrigeration compressor 18 and heater 19 pass through number respectively
It is connected according to line 2 with computer, the temperature data recorded is real-time transmitted to computer.
The end of temp probe I 10 and temp probe IV 13 is close to the bottom of foamed plastics lid 9.
The end of temp probe II 11 is located at the top of circulation I 14 end of perfusion tube, and is located at temp probe I 10 or temperature
It pops one's head in the lower sections of IV 13 ends.
The end of temp probe III 12 is close to the bottom of vacuum flask 8.
The working principle of the invention:
The present invention passes through the data that moisture recorder 3 acquires, and makes instruction to refrigeration compressor 18, circulation perfusion tube II 16 follows
Ring perfusion tube I 14 is a set of circulation perfusion tube, by extracting the triglyceride input channel in triglyceride case 17, is protected in wide-mouth
Heat exchange is carried out in warm bottle 8, is tested by temp probe I 10 into a bottle temperature, bottle outlet temperature is tested by temp probe IV 13, works as bottle
When interior temperature is higher, entering and leaving the temperature difference can be significantly improved, and when the temperature difference is more than prescribed limits, refrigeration compressor 18 obtains instruction and opens
Beginning work refrigeration reduces the circulating temperature of triglyceride, and observes slurry temperature by temp probe II 11, temp probe III 12
Degree, after reaching the allowable range of error for testing setting value, refrigeration compressor 18 stops working, whereas if outlet temperature is low
In inlet temperature, then need to heat triglyceride by heater 19 to control temperature in bottle.
Concrete operations are as follows:
Check whether each components instrument works well before experiment starts first, whether there is or not breakage appearance.Check it is errorless after,
Computer automatic temperature control system 1 is opened, a record file is created, starts to be tested.
The cement slurry prepared is directly placed into wide-mouth vacuum flask 8 by the first step, is then inserted into temperature in slurry and is visited
First II 11 detection slurry temperature, bottle center place temp probe III 12 and detect environment temperature in bottle, then installation circulation perfusion tube
II 16, perfusion tube I 14 is recycled, foamed plastics lid 9 is finally set up.
Second step starts refrigeration compressor 18 and heater 19, and the temperature of the triglyceride allowed in triglyceride case 17 reaches
To setting liquid temperature.
Third step, starting circulation perfusion tube II 16, circulation perfusion tube I 14, computer observe temp probe I 10 and temperature automatically
The IV 13 entrance temperature difference that record in real time of degree probe, it is automatic to start refrigeration compressor 18 or heating when the temperature difference reaches prescribed limits
Device 19 changes circulation transfusion system temperature, and the temperature difference of the observation intracorporal temperature of cement slurry and circulation transfusion system in real time, the temperature difference
After stabilization, refrigeration compressor 18 or heater 19(is automatically closed since slurry is in lasting heat release in bottle, and the wide-mouth of half insulation is protected
Warm bottle 8 can escape heat, thus the step for move in circles.).
4th step, the heat that real-time statistics circulation transfusion system is absorbed or released by automatic temperature control system 1, in addition wide-mouth is protected
The escape heat of warm bottle 8, the total heat of hydration and hydration heat rate that real-time rendering cement slurry changed with age.
5th step after experiment reaches design age, closes automatic temperature control system 1, opens foamed plastics lid 9, unload circulation
Perfusion tube II 16, circulation perfusion tube I 14, take out wide-mouth vacuum flask 8, by cement slurry it is discarded (also can be taken off doing next step intensity,
The analyses such as structure test), experiment is completed.
Claims (4)
1. a kind of for testing the device of hydration heat of cement under steady temperature, it is characterised in that: the device includes one and is equipped with certainly
Computer, the moisture recorder (3), two metal boxes (7), triglyceride case (17) of dynamic temperature-controlling system (1)；One metal
Work durm (6) are equipped in case (7), the surrounding foam backing plate (4) fixed with sheeting caps (5) is equipped with below the work durm (6)；The iron
Wide-mouth vacuum flask (8) are fixed in cylinder (6), the bottleneck of the vacuum flask (8) is equipped with polystyrene foam plastics lid (9)；The bubble
Temp probe I (10), temp probe II (11), temp probe III (12), temp probe IV are inserted on foam plastic lid (9) respectively
(13), the temp probe I (10), temp probe II (11), temp probe III (12), temp probe IV (13) respectively with the temperature
Recorder (3) are spent to be connected；The triglyceride case (17), the triglyceride case (17) are equipped in another described metal box (7)
Bottom be respectively equipped with refrigeration compressor (18) and heater (19)；The triglyceride case (17) is equipped with circulation perfusion tube II
(16), which is connected with the circulation perfusion tube I for being inserted into the foamed plastics lid (9) through metering pump (15)
(14)；The moisture recorder (3), the refrigeration compressor (18) and the heater (19) respectively by data line (2) with
The computer is connected.
2. as described in claim 1 a kind of for testing the device of hydration heat of cement under steady temperature, it is characterised in that: described
The end of temp probe I (10) and the temp probe IV (13) is close to the bottom of the foamed plastics lid (9).
3. as described in claim 1 a kind of for testing the device of hydration heat of cement under steady temperature, it is characterised in that: described
The end of temp probe II (11) is located at the top of described circulation perfusion tube I (14) end, and is located at the temp probe I (10)
Or the lower section of temp probe IV (13) end.
4. as described in claim 1 a kind of for testing the device of hydration heat of cement under steady temperature, it is characterised in that: described
Bottom of the end of temp probe III (12) close to the vacuum flask (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443799.6A CN109254032B (en) | 2018-11-29 | 2018-11-29 | Device for testing cement hydration heat under constant temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443799.6A CN109254032B (en) | 2018-11-29 | 2018-11-29 | Device for testing cement hydration heat under constant temperature |
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| Publication Number | Publication Date |
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| CN109254032A true CN109254032A (en) | 2019-01-22 |
| CN109254032B CN109254032B (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811443799.6A Active CN109254032B (en) | 2018-11-29 | 2018-11-29 | Device for testing cement hydration heat under constant temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426725A (en) * | 2020-03-12 | 2020-07-17 | 中国建筑材料科学研究总院有限公司 | Method and device for evaluating cement negative temperature hydration |
| CN112505310A (en) * | 2020-11-25 | 2021-03-16 | 中国海洋石油集团有限公司 | Test device and method for testing hydration heat release of cement slurry for well cementation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329965Y (en) * | 1998-03-16 | 1999-07-21 | 姜治邦 | Tester for cement hydration heat |
| US20050152432A1 (en) * | 2004-01-13 | 2005-07-14 | Halliburton Energy Services, Inc. | Method and apparatus for testing cement slurries |
| CN201215559Y (en) * | 2008-06-06 | 2009-04-01 | 无锡建仪仪器机械有限公司 | Tester for cement hydration heat |
| JP2017173182A (en) * | 2016-03-24 | 2017-09-28 | 宇部興産株式会社 | Hydration heat measurement method of cement composition |
| CN108445043A (en) * | 2018-05-31 | 2018-08-24 | 中国建材检验认证集团股份有限公司 | Hydration heat of cement measurement device |
| CN108693211A (en) * | 2017-04-06 | 2018-10-23 | 天津市港源试验仪器厂 | A kind of dual-use type hydrated cementitious thermal measurement device |
-
2018
- 2018-11-29 CN CN201811443799.6A patent/CN109254032B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329965Y (en) * | 1998-03-16 | 1999-07-21 | 姜治邦 | Tester for cement hydration heat |
| US20050152432A1 (en) * | 2004-01-13 | 2005-07-14 | Halliburton Energy Services, Inc. | Method and apparatus for testing cement slurries |
| CN201215559Y (en) * | 2008-06-06 | 2009-04-01 | 无锡建仪仪器机械有限公司 | Tester for cement hydration heat |
| JP2017173182A (en) * | 2016-03-24 | 2017-09-28 | 宇部興産株式会社 | Hydration heat measurement method of cement composition |
| CN108693211A (en) * | 2017-04-06 | 2018-10-23 | 天津市港源试验仪器厂 | A kind of dual-use type hydrated cementitious thermal measurement device |
| CN108445043A (en) * | 2018-05-31 | 2018-08-24 | 中国建材检验认证集团股份有限公司 | Hydration heat of cement measurement device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426725A (en) * | 2020-03-12 | 2020-07-17 | 中国建筑材料科学研究总院有限公司 | Method and device for evaluating cement negative temperature hydration |
| CN111426725B (en) * | 2020-03-12 | 2023-03-10 | 中国建筑材料科学研究总院有限公司 | Method and device for evaluating cement negative temperature hydration |
| CN112505310A (en) * | 2020-11-25 | 2021-03-16 | 中国海洋石油集团有限公司 | Test device and method for testing hydration heat release of cement slurry for well cementation |
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| CN109254032B (en) | 2020-10-02 |
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