CN204613208U - A kind of cement-based material relative humidity measurement device in length of time morning - Google Patents
A kind of cement-based material relative humidity measurement device in length of time morning Download PDFInfo
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- CN204613208U CN204613208U CN201520316519.0U CN201520316519U CN204613208U CN 204613208 U CN204613208 U CN 204613208U CN 201520316519 U CN201520316519 U CN 201520316519U CN 204613208 U CN204613208 U CN 204613208U
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Abstract
The utility model relates to a kind of cement-based material relative humidity measurement device in length of time morning, is the measurement of cement-based material relative humidity in length of time morning, have employed brand-new project organization, comprise sleeve pipe, humidity sensor and data collecting instrument; Wherein, the probe of humidity sensor is inserted in sleeve pipe by the activity of cannula tip opening part, and the probe of humidity sensor is positioned at the bottom of sleeve pipe, and does not stretch out the opening of casing shoe, humidity sensor is connected with data collecting instrument, and data collecting instrument is for recording relative humidity image data; Also comprise at least two support bars, wherein one end of each support bar is connected on the edge of casing shoe opening, and each link position is equally spaced is each other distributed on casing shoe edge of opening, the projected length of each support bar on the straight line of sleeve pipe place is equal, and this length is preset according to test specimen point position, effectively can prevent cement-based material internal high temperature degree in length of time morning, and high humility is for the destruction of sensor probe, and the relative humidity curve in cement-based material length of time morning can be obtained accurately; Enough avoid the saturated relative humidity that continues and high temperature to damage sensor probe, when cement-based material humidity lower than 100% time, adopt computer automatically to gather, the moisture curve of degree of precision can be obtained, the damage of sensor can be avoided again.
Description
Technical field
The utility model relates to a kind of cement-based material relative humidity measurement device in length of time morning, belongs to building materials field of measuring technique.
Background technology
Along with the continuous progress and development of society, more and more higher to the requirement of the cement-based material performances such as concrete in Practical Project, simultaneously, the cracking caused with the high convergency of high performance concrete is also more and more general, and xoncrete structure cracking, be the one of the main reasons that current practical structures project durability reduces.Inside concrete relative humidity is one of important parameter of research contraction.Therefore, in order to ensure the permanance of xoncrete structure, moisture measurement research is carried out to cement-based materials such as concrete very necessary.
At present, the high-acruracy survey in high humility district is the difficult problem in moisture measurement field always.First, same humidity sensor, measuring accuracy in high relative humidity district and low relative humidity district, pole will lower than the measuring accuracy of interlude, even the humidity sensor of the higher hygristor of measuring accuracy, humicap series, this phenomenon equally clearly.Secondly, higher temperature and higher relative humidity (mainly the relative humidity of 100%) can affect the normal work of humidity sensor, even damage sensor probe.Cement-based material is in hydration process, and early hydration reaction is violent, can concentrate the hydration heat that release is a large amount of, makes the temperature of cement-based material increase very fast, even up to more than 70 DEG C.And the internal relative humidity in cement-based material early length of time is generally more than 98%, and such internal environment determines the difficulty that the early stage internal relative humidity of cement-based material is measured.Although the humidity sensor that some precision are lower can more early start to measure, cause the measuring error in early stage excessive because precision is too low, so the data research provided has little significance.
Due to the existence of the problems referred to above, in document, rarer high-precision early stage relative humidity (the especially front 3 day length of time) curve, generally all thinks that the relative humidity of first 2 ~ 3 days is 100%.But in fact, the relative humidity of the cement-based material of conventional match ratio in 24 hours, just declines after having built from 100%.According to Laplace's equation and Calvin equation, and the trial curve of self-constriction instead can push away and learns, relative humidity just ought to start to decline building in 24 hours.For this reason, design and a set ofly can measure early stage inside relative humidity of cement base material, the method and apparatus of damage can not be caused again humidity sensor, just seem and be necessary very much.
Utility model content
For above-mentioned technical matters, it is simple that technical problem to be solved in the utility model is to provide a kind of structural design, while can not causing damage to humidity sensor, the cement-based material relative humidity measurement device in length of time morning of cement-based material relative humidity in length of time morning can be measured.
The utility model is in order to solve the problems of the technologies described above by the following technical solutions: the utility model devises a kind of cement-based material relative humidity measurement device in length of time morning, comprises sleeve pipe, humidity sensor and data collecting instrument; Wherein, the probe of humidity sensor is inserted in sleeve pipe by the activity of cannula tip opening part, and the probe of humidity sensor is positioned at the bottom of sleeve pipe, and does not stretch out the opening of casing shoe, humidity sensor is connected with data collecting instrument, and data collecting instrument is for recording relative humidity image data; Also comprise at least two support bars, wherein one end of each support bar is connected on the edge of casing shoe opening, and each link position is equally spaced is each other distributed on casing shoe edge of opening, the projected length of each support bar on the straight line of sleeve pipe place is equal, and this length is preset according to test specimen point position.
As a kind of optimal technical scheme of the present utility model: the length of described each support bar is equal.
As a kind of optimal technical scheme of the present utility model: described each support bar place straight line parallels with described sleeve pipe place straight line.
As a kind of optimal technical scheme of the present utility model: position corresponding with the probe positions of described humidity sensor on described sleeve side walls arranges at least one through hole.
As a kind of optimal technical scheme of the present utility model: also comprise by the column plug in described cannula tip opening part activity insertion sleeve pipe, the probe alternative activity of column plug and described humidity sensor is inserted in sleeve pipe.
As a kind of optimal technical scheme of the present utility model: also comprise turned welt rubber plug and perforate turned welt rubber plug, wherein, turned welt rubber plug detachable-type sealed is set in described cannula tip opening part; Detachable and the described cannula tip edge of opening of perforate turned welt rubber plug seals and contacts, is set in cannula tip opening part, and the outer wall of the detachable and described humidity sensor of the verge of opening of perforate turned welt rubber plug seals and contacts, is set on described humidity sensor outer wall.
Early the length of time, relative humidity measurement device adopted above technical scheme compared with prior art to a kind of cement-based material described in the utility model, there is following technique effect: the cement-based material relative humidity measurement device in length of time morning of the utility model design, for the measurement of cement-based material relative humidity in length of time morning, have employed brand-new project organization, effectively can prevent cement-based material internal high temperature degree in length of time morning, and high humility is for the destruction of sensor, and the relative humidity curve in cement-based material length of time morning can be obtained accurately, for cement-based material mechanics in length of time morning, deformation performance research and Numerical Simulation Analysis provide parameter accurately, and without the need to adopting special high temperature resistant sensor, use ordinary sensors can complete measurement operation, provide not only experimental data more accurately and reliably, and effectively reduce experimentation cost.
Accompanying drawing explanation
Fig. 1 for the utility model design cement-based material early the length of time relative humidity measurement device structural representation.
Fig. 2 is that based on cement-based material, early the length of time, relative humidity measurement device carried out the early stage relative humidity curve figure in inside of the clean slurry measuring the water cement ratio 0.3 obtained to the design of application the utility model.
Wherein, 1. sleeve pipe, 2. humidity sensor, 3. data collecting instrument, 4. pop one's head in, 5. support bar, 6. through hole, 7. perforate turned welt rubber plug, 8. test specimen.
Embodiment
Be described in further detail for embodiment of the present utility model below in conjunction with Figure of description.
As shown in Figure 1, a kind of cement-based material relative humidity measurement device in length of time morning of the utility model design, in the middle of actual application, comprises sleeve pipe 1, humidity sensor 2 and data collecting instrument 3; Wherein, the probe 4 of humidity sensor 2 is inserted in sleeve pipe 1 by the activity of sleeve pipe 1 top end opening, and the probe 4 of humidity sensor 2 is positioned at the bottom of sleeve pipe 1, and does not stretch out the opening of sleeve pipe 1 bottom; Position corresponding with probe 4 position of humidity sensor 2 on sleeve pipe 1 sidewall arranges at least one through hole 6, the design of through hole 6, being to make humidity sensor can have enough attaching spaces between 2 and cement-based material, ensureing that humidity sensor 2 detects the accuracy of data; And for the design of through hole 6, square opening can be adopted in practical application to design, the height that specifically can design square opening is 10mm, and width is slightly less than the diameter of sleeve pipe 1, about little than sleeve pipe 1 diameter 4mm; Humidity sensor 2 is connected with data collecting instrument 3, and data collecting instrument 3 is for recording relative humidity image data; Also comprise turned welt rubber plug, perforate turned welt rubber plug 7, column plug, at least two support bars 5, column plug is inserted in sleeve pipe 1 by described sleeve pipe 1 top end opening activity, and probe 4 alternative activity of column plug and described humidity sensor 2 is inserted in sleeve pipe 1; Turned welt rubber plug detachable-type sealed is set in described sleeve pipe 1 top end opening place; Perforate turned welt rubber plug 7 detachable and described sleeve pipe 1 top end opening edge seal contacts, is set in sleeve pipe 1 top end opening place, and the outer wall of the detachable and described humidity sensor 2 of the verge of opening of perforate turned welt rubber plug 7 seals and contacts, is set on described humidity sensor 2 outer wall; Wherein one end of each support bar 5 is connected on the edge of sleeve pipe 1 bottom end opening, and each link position is equally spaced is each other distributed on sleeve pipe 1 bottom end opening edge; The projected length of each support bar 5 on the straight line of sleeve pipe 1 place is equal, and this length is preset according to test specimen point position, this wherein, for each support bar 5, specifically can design three kinds of technical schemes: the first, length for each support bar 5 does not do requirement, can equally grow or different length, but the projected length of each support bar 5 on the straight line of sleeve pipe 1 place is equal; The second, for the length of each support bar 5, design adopts equally long, and the projected length of each support bar 5 on the straight line of sleeve pipe 1 place is equal; The third, design each support bar 5 place straight line to parallel with described sleeve pipe 1 place straight line, and the projected length of each support bar 5 on the straight line of sleeve pipe 1 place is equal, namely the length of each support bar 5 is equal, and each support bar 5 place straight line parallels with described sleeve pipe 1 place straight line.
The cement-based material relative humidity measurement device in length of time morning of technique scheme design, for the measurement of cement-based material relative humidity in length of time morning, have employed brand-new project organization, effectively can prevent the early inner higher temperature of cement-based material in the length of time, and higher levels of humidity is for the destruction of sensor, and the relative humidity curve in cement-based material length of time morning can be obtained accurately, for cement-based material mechanics in length of time morning, deformation performance research and Numerical Simulation Analysis provide parameter accurately, and without the need to adopting special high temperature resistant sensor, use ordinary sensors can complete measurement operation, provide not only experimental data more accurately and reliably, and effectively reduce experimentation cost.
Based on the cement-based material relative humidity measurement device in length of time morning of technique scheme design, the utility model devises the measurement for cement-based material relative humidity in length of time morning, specifically comprises the steps:
Step 001. selects the measurement mechanism of suitable dimension according to sample dimensions, namely select that there is suitable support bar 5 measurement of length device, first smear vaseline beyond the Great Wall in described column, again described column plug is inserted in sleeve pipe 1 by described sleeve pipe 1 top end opening, and the bottom of column plug is mutually concordant with the bottom of described sleeve pipe 1, enters step 002.Wherein, vaseline smear the contact that can effectively increase each other between object, can play and improve the effect of sealing.
The sleeve pipe 1 inserting column plug vertically inserts to have built and be in and vibrates in the test specimen of operation by step 002., until sleeve pipe 1 bottom arrives test specimen specified measurement position, and the bottom of each support bar 5 contacts with bottom test specimen bottom sleeve pipe 1, treat that test specimen vibrates to operate and terminate, enter step 003.
Test specimen is first put into fog room together with measurement mechanism by step 003., judge whether test specimen is more than or equal to first threshold duration from the accumulation interval of building the deadline again, be enter step 004, otherwise continue to judge whether test specimen is more than or equal to first threshold duration from the accumulation interval of building the deadline; Wherein, first threshold duration is less than 12 hours, and the span of first threshold duration is 2-4 hour.
Step 004. first retaining sleeve 1 is arranged in the invariant position of test specimen, rotate and upwards extract column plug, then described turned welt rubber stopper seal is set in sleeve pipe 1 top end opening place, and smears vaseline in the position that turned welt rubber plug contacts with sleeve pipe 1 top end opening place, enter step 005.
Step 005. judges whether test specimen is more than or equal to Second Threshold duration from the accumulation interval of building the deadline, first take off turned welt rubber plug from sleeve pipe 1 top end opening, then the probe 4 of described humidity sensor 2 is inserted in sleeve pipe 1 by the activity of sleeve pipe 1 top end opening, and perforate turned welt rubber plug 7 is set on the outer wall of humidity sensor 2, and perforate turned welt rubber plug 7 respectively with humidity sensor 2 outer wall, sleeve pipe 1 top end opening edge seal contacts, perforate turned welt rubber plug 7 respectively with humidity sensor 2 outer wall, vaseline is smeared in the position of sleeve pipe 1 top end opening edge contact, finally enter step 006, otherwise continue to judge whether test specimen is more than or equal to Second Threshold duration from the accumulation interval of building the deadline, wherein, Second Threshold duration is greater than first threshold duration, and Second Threshold duration is less than 12 hours, and the span of Second Threshold duration is 6-8 hour.
Step 006. humidity sensor 2 is popped one's head in the relative humidity of 4 detection test specimens, and is uploaded to described data collecting instrument 3, enters step 007.
The artificial relative humidity reading test specimen from data collecting instrument 3 of step 007., line item of going forward side by side; Meanwhile, judge whether this relative humidity is more than or equal to >=100%, be enter step 008, otherwise enter step 009.
Step 008. judges whether test specimen is more than or equal to 12 hours from the accumulation interval of building the deadline, is enter step 009; Otherwise first from sleeve pipe 1, extract humidity sensor 2, and take off perforate turned welt rubber plug 7, then turned welt rubber stopper seal is set in sleeve pipe 1 top end opening place, and smears vaseline in the position that turned welt rubber plug contacts with sleeve pipe 1 top end opening place, finally postpone to return step 005 after 2 hours.
Step 009. humidity sensor 2 is popped one's head in 4 relative humidity detecting in real time test specimens, and is uploaded in real time in described data collecting instrument 3, and adopts terminal to be obtained the real-time relative humidity of test specimen in real time by data collecting instrument 3; Meanwhile, manually will to read in step 007 and the relative humidity recorded and real-time relative humidity are synthesized, the moisture measurement curve of formation test specimen.
Above-mentioned design is based on the measuring method of cement-based material relative humidity measurement device in length of time morning, based on the cement-based material relative humidity measurement device in length of time morning that above-mentioned the utility model designs, for Primary Stage Data, adopt the method for " point is surveyed ", the saturated relative humidity that continues and high temperature can be avoided to damage sensor, when cement-based material humidity lower than 100% time, adopt computer automatically to gather, the moisture curve of degree of precision can be obtained, the damage of sensor can be avoided again.Apply the measuring method of above-mentioned design based on cement-based material relative humidity measurement device in length of time morning, for water cement ratio 0.3, be of a size of 220mm × 180mm × 260mm, the early stage relative humidity of upper surface unencapsulated concrete paste specimen different parts is measured, as shown in Figure 2, the early stage relative humidity curve figure of the clean slurry of water cement ratio 0.3 is accurately obtained.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from the utility model aim.
Claims (6)
1. a cement-based material relative humidity measurement device in length of time morning, comprises sleeve pipe (1), humidity sensor (2) and data collecting instrument (3); Wherein, the probe (4) of humidity sensor (2) inserts in sleeve pipe (1) by the activity of sleeve pipe (1) top end opening, the probe (4) of humidity sensor (2) is positioned at the bottom of sleeve pipe (1), and do not stretch out the opening of sleeve pipe (1) bottom, humidity sensor (2) is connected with data collecting instrument (3), and data collecting instrument (3) is for recording relative humidity image data; It is characterized in that: also comprise at least two support bars (5), wherein one end of each support bar (5) is connected on the edge of sleeve pipe (1) bottom end opening, and each link position is equally spaced is each other distributed on sleeve pipe (1) bottom end opening edge, the projected length of each support bar (5) on the straight line of sleeve pipe (1) place is equal, and this length is preset according to test specimen point position.
2. according to claim 1 a kind of cement-based material early the length of time relative humidity measurement device, it is characterized in that: the length of described each support bar (5) is equal.
3. according to claim 1 a kind of cement-based material early the length of time relative humidity measurement device, it is characterized in that: described each support bar (5) place straight line parallels with described sleeve pipe (1) place straight line.
4., according to a kind of cement-based material relative humidity measurement device in length of time morning described in any one in claims 1 to 3, it is characterized in that: position corresponding with probe (4) position of described humidity sensor (2) on described sleeve pipe (1) sidewall arranges at least one through hole (6).
5. according to claim 1 a kind of cement-based material early the length of time relative humidity measurement device, it is characterized in that: also comprise by the column plug in described sleeve pipe (1) top end opening activity insertion sleeve pipe (1), probe (4) alternative activity of column plug and described humidity sensor (2) is inserted in sleeve pipe (1).
6. according to claim 1 a kind of cement-based material early the length of time relative humidity measurement device, it is characterized in that: also comprise turned welt rubber plug and perforate turned welt rubber plug (7), wherein, turned welt rubber plug detachable-type sealed is set in described sleeve pipe (1) top end opening place; Perforate turned welt rubber plug (7) detachable and described sleeve pipe (1) top end opening edge seal contacts, is set in sleeve pipe (1) top end opening place, and the outer wall of the detachable and described humidity sensor (2) of the verge of opening of perforate turned welt rubber plug (7) seals and contacts, is set on described humidity sensor (2) outer wall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520316519.0U CN204613208U (en) | 2015-05-15 | 2015-05-15 | A kind of cement-based material relative humidity measurement device in length of time morning |
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| CN201520316519.0U CN204613208U (en) | 2015-05-15 | 2015-05-15 | A kind of cement-based material relative humidity measurement device in length of time morning |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833794A (en) * | 2015-05-15 | 2015-08-12 | 河海大学 | Device and method for measuring early-age relative humidity of cement-based material |
| AT517846B1 (en) * | 2015-12-14 | 2017-05-15 | Technische Universität Wien | Indicator device for building material moisture determination |
| CN106950356A (en) * | 2017-03-02 | 2017-07-14 | 北京市第三建筑工程有限公司 | Suitable for concrete shrinkage and creep analytical equipment and its method |
| CN109813877A (en) * | 2019-01-22 | 2019-05-28 | 山东大学 | A kind of separating concrete humidity field test device and method |
-
2015
- 2015-05-15 CN CN201520316519.0U patent/CN204613208U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833794A (en) * | 2015-05-15 | 2015-08-12 | 河海大学 | Device and method for measuring early-age relative humidity of cement-based material |
| AT517846B1 (en) * | 2015-12-14 | 2017-05-15 | Technische Universität Wien | Indicator device for building material moisture determination |
| AT517846A4 (en) * | 2015-12-14 | 2017-05-15 | Technische Universität Wien | Indicator device for building material moisture determination |
| CN106950356A (en) * | 2017-03-02 | 2017-07-14 | 北京市第三建筑工程有限公司 | Suitable for concrete shrinkage and creep analytical equipment and its method |
| CN106950356B (en) * | 2017-03-02 | 2019-05-21 | 北京市第三建筑工程有限公司 | Suitable for concrete shrinkage and creep analytical equipment and its method |
| CN109813877A (en) * | 2019-01-22 | 2019-05-28 | 山东大学 | A kind of separating concrete humidity field test device and method |
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Granted publication date: 20150902 Termination date: 20180515 |
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