CN107607428A - A kind of monitoring system and method for the Concrete Material water absorption rate of monitoring in real time - Google Patents
A kind of monitoring system and method for the Concrete Material water absorption rate of monitoring in real time Download PDFInfo
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- CN107607428A CN107607428A CN201710698341.4A CN201710698341A CN107607428A CN 107607428 A CN107607428 A CN 107607428A CN 201710698341 A CN201710698341 A CN 201710698341A CN 107607428 A CN107607428 A CN 107607428A
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Abstract
The invention discloses a kind of method testing system and method for the Concrete Material water absorption rate of monitoring in real time, the test system is made up of water suction monitoring device and water evaporation monitoring device two parts；The water suction monitoring device is made up of fixing end, rope, water container I, the string bag, test material, electronic balance I and supervising device I；The water evaporation monitoring device is made up of water inlet pipe, water container II, electronic balance II and supervising device II.The present invention monitors the evapotranspiration of water using water suction monitoring device in real time, using evaporation capacity of the water evaporation monitoring device monitoring water in test process, using water suction monitoring device and water evaporation monitoring device composition combination monitoring system, the water absorption rate of the real-time monitoring and test material of energy.
Description
Technical field
The invention belongs to civil engineering material technical field of measurement and test, is related to a kind of monitoring Concrete Material water absorption rate in real time
Test system and method.
Background technology
Concrete durability is one very important performance of Concrete Material, is related to Concrete Material in reality
Military service quality and Years Of Service in environment, influence the convenience and security used actual components, and then to some extent
Influence the life production and social development of people.Concrete Material has the pore structure of multi-phase complex, is water and other materials
Passage is provided into inside concrete.The water absorbing capacity of Concrete Material is to influence its frost resistance and corrosion resistance to closing weight
The factor wanted, durability of the material in actual environment can be influenceed.The water absorption rate of Concrete Material is monitored in real time, can
To determine and predict the moisture content of Concrete Material, reliable foundation is provided for the evaluation of Concrete Material endurance quality,
With important and necessary scientific research value justice and engineering significance.
The content of the invention
, not only can be right the invention provides a kind of test system and method for the Concrete Material water absorption rate of monitoring in real time
The water absorption rate of Concrete Material is monitored in real time, can also determine and predict the moisture content of Concrete Material, is coagulation
The evaluation of earthen materia structure and the evaluation of endurance quality provide reliable foundation.
The purpose of the present invention is achieved through the following technical solutions：
A kind of test system of the Concrete Material water absorption rate of monitoring in real time, by water suction monitoring device and water evaporation monitoring dress
Put two parts composition；
The water suction monitoring device is by fixing end, rope, water container I, the string bag, test material, electronic balance I and monitoring
Device I is formed, wherein：The upper end of the rope is connected with fixing end, and lower end is connected with the string bag；The string bag is located at water container
In I, test material is arranged in the string bag；The water container I is placed on electronic balance I；The supervising device I is alignment electricity
The monitoring camera of sub- balance I registration display screens or the computer being connected with electronic balance I serial ports, for continuous recorded electronic day
Flat I registration change；
The water evaporation monitoring device is made up of water inlet pipe, water container II, electronic balance II and supervising device II, its
In：The water inlet pipe is arranged on water container II top；The water container II is placed on electronic balance II；The monitoring
Device II is the monitoring camera of alignment electronic balance II registration display screens or the computer being connected with electronic balance II serial ports, is used
Change in continuous recorded electronic balance II registration.
A kind of method for being monitored Concrete Material water absorption rate in real time using above-mentioned test system, is comprised the following steps：
First, water container I is placed on electronic balance I, water container II is placed on electronic balance II, starts monitoring
Device I and supervising device II；
2nd, start electronic balance I, measure the quality of test material, be designated as m0, close electronic balance I；
3rd, test material is placed in the string bag, rope lower end and string bag top is closely coupled, rope upper end and fixation
End is firmly connected；
4th, electronic balance I, water container I and test material, the position relationship of the string bag are adjusted, ensures rope, test material
Do not contacted with the string bag under natural vertical state with water container I inwalls, and test material is fully immersed in water container I's
In water；
5th, keep water container I and electronic balance I position motionless, by test material, the string bag and rope from water container
I is taken out, and starts electronic balance I, and suitable quantity of water is injected into water container I, ensures that water can flood test completely in test process
Material；After electronic balance I registrations are stable, test material are immediately placed in water container I water, test material is contained immediately
Water submerged in water receptacle I, test start, and electronic balance I maximum registration is m during thism；At the same time, water inlet is opened
Switch, from water inlet pipe water filling into water container II, until electronic balance II registration reaches mmWhen close water inlet switch immediately；
6th, water absorption rate and aqueous of the test material in random time t after test starts is obtained according to following calculation formula
Rate：
In formula：
--- water absorption rate of the test material when the time is t after test starts, %；
--- moisture content of the test material when the time is t after test starts, %；
ΔMt--- test is when to start the rear time be t, the rate of change of test material quality, g/s；
T --- the time that test is tested after starting, s；
m0--- the quality of test material, g before test starts；
m1--- test material is free of quality during Free water, g；
mt1--- test is when to start the rear time be t, electronic balance I registration, g in full water monitoring device；
mt2--- test is when to start the rear time be t, electronic balance II registration, g in water evaporation monitoring device.
In the present invention, if m0Weight when test material is free of Free water, then, will after water of satisfying to test material terminates
Test material is dried to without free water state, dried test material is placed on after being cooled to room temperature in drier, surveyed
The quality for obtaining test material is m1。
In the present invention, the test material is the Concrete Material after hydration and hardening.
In the present invention, the upper surface of the test material is any angle with horizontal plane in the string bag.
The invention has the advantages that：
1) monitor the evapotranspiration of water in real time using water suction monitoring device, tested using water evaporation monitoring device monitoring water
During evaporation capacity, using water suction monitoring device and water evaporation monitoring device form combination monitoring system, survey can be monitored in real time
Try the water absorption rate of material.
2) in the present invention absorbs water monitoring device, the evapotranspiration of water includes the water absorption of material and the water two of evaporation
Point, water suction monitoring device can monitor water loss total amount, and water evaporation monitoring device can monitor the evaporation capacity of water, and water absorption rate calculates
Also the evaporation capacity of the evapotranspiration comprising water and water, therefore utilization is inventive process ensures that material water absorption rate and aqueous in formula
The accuracy of rate result of calculation.
3) the accurate detailed data measured can be utilized, the mass change Δ M of test material can be obtainedtWith time t
The rule of change；
4) the mass change Δ M of rear test material is started by using testtRule with time t changes is appointed to calculate
The water absorption rate of material during one time t, the absorbent time for obtaining material can also be calculated according to water absorption rate.
5) the material water absorption rate determination of monitoring acquisition in real time or the moisture content of prediction material can be utilized.
6) test material can easily convert the angle with horizontal plane in the string bag, and test obtains test material in water
The water suction situation of optional position state point of lower any time.
7) if test start before test material be free of Free water when weight, it is known that if can using the inventive method it is real-time
The moisture content of monitoring and test material.
Brief description of the drawings
To monitor the structural representation of the monitoring system of Concrete Material water absorption rate in real time, (supervising device is monitoring to Fig. 1
Camera)；
Fig. 2 be in real time monitoring Concrete Material water absorption rate monitoring system structural representation (supervising device be and day
The connected computer of flat serial ports)；
Fig. 3 is the test material mass change and the graph of a relation of time that example 1 obtains；
Fig. 4 is the test material water absorption rate and the graph of a relation of time that example 1 obtains；
Fig. 5 is the test material moisture content and the graph of a relation of time that example 1 obtains；
Fig. 6 is the test material mass change and the graph of a relation of time that example 2 obtains；
Fig. 7 is the test material water absorption rate and the graph of a relation of time that example 2 obtains；
Fig. 8 is the test material moisture content and the graph of a relation of time that example 2 obtains；
Fig. 9 is the test material mass change and the graph of a relation of time that example 3 obtains；
Figure 10 is the test material water absorption rate and the graph of a relation of time that example 3 obtains；
Figure 11 is the test material moisture content and the graph of a relation of time that example 3 obtains.
Embodiment
Technical scheme is further described below in conjunction with the accompanying drawings, but is not limited thereto, it is every to this
Inventive technique scheme is modified or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention, all should cover
In protection scope of the present invention.
Embodiment one：Present embodiments provide for a kind of test system of the Concrete Material water absorption rate of monitoring in real time
System, as shown in figure 1, the test system is made up of water suction monitoring device I and water evaporation monitoring device II.
The water suction monitoring device I is by fixing end 1, rope 2, water container I 3, the string bag 4, test material 5, electronic balance
I 8 and supervising device I 9 are formed, can be according to the specific needs of test, by the upper surface a, side b, bottom surface of test material 5
C carries out selective sealing with the encapsulant 6 of the exclusion of water such as glass cement or epoxy resin.The top of the rope 2 and fixing end 1
It is connected, the bottom of rope 2 and the string bag 4 are closely coupled, and test material 5 is arranged in the string bag 4, and adjusting position ensures test material 5
And the string bag 4 does not contact the inwalls of water container I 3, and can is completely submerged in water 7.Water container I 3 is placed on electronic balance I
On 7, supervising device I 9 is directed at the registration display screens (Fig. 1) of electronic balance I 8 (or makes supervising device I 9 and electronic balance I 8
Serial ports be connected (Fig. 2)), ensure monitoring during can continuously record electronic balance I 8 registration change.
The water evaporation monitoring device B is by water inlet pipe 10, water container II 11, electronic balance II 12 and supervising device II
13 are formed.The water inlet pipe 10 is arranged on water container II 11 top, and water container II 11 is placed on electronic balance II 12
On, supervising device II 13 is directed at the registration display screens (Fig. 1) of electronic balance II 12 (or makes supervising device II 13 and electronics day
Flat II 12 serial ports is connected (Fig. 2)), ensure continuously record electronic balance II 12 registration change during monitoring.Its
In, water container I 3 and the water 7 in water container II 11, water container I 3 and the water 7 in water container II 11, electronics day
Flat I 8 is identical with supervising device II 13 specification, species and model with electronic balance II 12, supervising device I 8；Water container
The internal diameter in each height sections of I 3 is equal, and the internal diameter in each height sections of water container II 11 is equal..
Embodiment two：It is real-time using test system described in embodiment one present embodiments provide for one kind
The method for monitoring Concrete Material water absorption rate, methods described specific implementation step are as follows：
First, water container I is placed on electronic balance I, water container II is placed on electronic balance II, starts monitoring
Device I and supervising device II, supervising device I and supervising device II is set to be respectively aligned to electronic balance I and electronic balance II registration
Display screen, or supervising device I is connected with serial ports of the supervising device II respectively with electronic balance I and electronic balance II, ensure prison
Control device energy whole process records test process；
2nd, start electronic balance I, test the quality of test material, be designated as m0, close electronic balance I；
3rd, test material is placed in the string bag, rope lower end and string bag top is closely coupled, rope upper end and fixation
End is firmly connected, and ensures that rope does not come off from fixing end in test process, test material does not come off from the string bag, and the string bag is not
Come off from rope；
4th, electronic balance I, water container I and test material, the position relationship of the string bag are adjusted, ensures rope, test material
Do not contacted with the string bag under natural vertical state with water container I inwalls, and test material is fully immersed in water container I's
In water；
5th, keep water container I and electronic balance I position motionless, by test material, the string bag and rope from water container
I is taken out, and starts electronic balance I, and suitable quantity of water is injected into water container I, ensures that water can flood test completely in test process
Material；After electronic balance I registrations are stable, test material are immediately placed in water container I water, test material is contained immediately
Water submerged in water receptacle I, test start；In the process, the water not spluttering in water container, electronic balance during this are ensured
I maximum registration is mm；At the same time, water inlet switch is opened, from water inlet pipe water filling into water container II, until electronic balance
II registration reaches mmWhen close water inlet switch immediately；
6th, water absorption rate and aqueous of the test material in random time t after test starts is obtained according to following calculation formula
Rate：
In formula：
--- water absorption rate of the test material when the time is t after test starts, %；
--- moisture content of the test material when the time is t after test starts, %；
ΔMt--- test is when to start the rear time be t, the rate of change of test material quality, g/s；
T --- the time that test is tested after starting, s；
m0--- the quality of test material, g before test starts；
m1--- test material is free of quality during Free water, g；
mt1--- test is when to start the rear time be t, electronic balance I registration, g in full water monitoring device；
mt2--- test is when to start the rear time be t, electronic balance II registration, g in water evaporation monitoring device.
Example 1：
The Concrete Material mass change obtained using test system of the present invention and the graph of a relation of time such as Fig. 3 institutes
Show, changing rule obeys power function, coefficient of determination R2＞ 0.95.The material water absorption rate obtained and the graph of a relation of time are tested as schemed
Shown in 4, material moisture content partial data is as shown in Figure 5.
Example 2：
The Concrete Material mass change obtained using test system of the present invention and the graph of a relation of time such as Fig. 6 institutes
Show, changing rule obeys power function, coefficient of determination R2＞ 0.95.The material water absorption rate obtained and the graph of a relation of time are tested as schemed
Shown in 7, material moisture content partial data is as shown in Figure 8.
Example 3：
Using test system of the present invention obtain Concrete Material mass change and the graph of a relation of time as figure 9,
Changing rule obeys power function, coefficient of determination R2＞ 0.95.Test the material water absorption rate and the graph of a relation of time such as Figure 10 obtained
Shown, material moisture content partial data is as shown in figure 11.
Example 1, example 2, parameter is as shown in table 1 corresponding to example 3.
Table 1
Claims (10)
1. a kind of monitoring system of the Concrete Material water absorption rate of monitoring in real time, it is characterised in that the test system is supervised by water suction
Survey device and water evaporation monitoring device two parts are formed；
The water suction monitoring device is by fixing end, rope, water container I, the string bag, test material, electronic balance I and supervising device
I is formed, wherein：The upper end of the rope is connected with fixing end, and lower end is connected with the string bag；The string bag is located in water container I,
Test material is arranged in the string bag；The water container I is placed on electronic balance I；The monitoring device I is used to continuously record
Electronic balance I registration change；
The water evaporation monitoring device is made up of water inlet pipe, water container II, electronic balance II and supervising device II, wherein：Institute
State the top that water inlet pipe is arranged on water container II；The water container II is placed on electronic balance II；The supervising device
II changes for continuous recorded electronic balance II registration.
2. the monitoring system of the Concrete Material water absorption rate of monitoring in real time according to claim 1, it is characterised in that described
Test material is the Concrete Material after hydration and hardening.
3. the monitoring system of the Concrete Material water absorption rate of monitoring in real time according to claim 1, it is characterised in that described
The upper surface of test material is any angle with horizontal plane in the string bag.
4. the monitoring system of the Concrete Material water absorption rate of monitoring in real time according to claim 1, it is characterised in that described
Water container I and the water in water container II, water container I and water, electronic balance I and the electronic balance in water container II
II, supervising device I are identical with supervising device II specification, species and model.
5. the monitoring system of the Concrete Material water absorption rate of monitoring in real time according to claim 1, it is characterised in that described
The internal diameter in each height sections of water container I is equal, and the internal diameter in each height sections of water container II is equal.
6. the monitoring system of the real-time monitoring Concrete Material water absorption rate according to claim 1 or 4, it is characterised in that institute
State the monitoring camera that supervising device I is alignment electronic balance I registration display screens or the calculating being connected with electronic balance I serial ports
Machine.
7. the monitoring system of the real-time monitoring Concrete Material water absorption rate according to claim 1 or 4, it is characterised in that institute
State the monitoring camera that supervising device II is alignment electronic balance II registration display screens or the meter being connected with electronic balance II serial ports
Calculation machine.
8. a kind of test system using described in claim 1-7 any claims monitors Concrete Material water absorption rate in real time
Method, it is characterised in that methods described step is as follows：
First, water container I is placed on electronic balance I, water container II is placed on electronic balance II, starts supervising device
I and supervising device II；
2nd, start electronic balance I, test the quality of test material, be designated as m0, close electronic balance I；
3rd, test material is placed in the string bag, rope lower end and string bag top is closely coupled, and rope upper end is entered with fixing end
Row is firmly connected；
4th, electronic balance I, water container I and test material, the position relationship of the string bag are adjusted, ensures rope, test material and net
Pocket does not contact under natural vertical state with water container I inwalls, and test material is fully immersed in water container I water
In；
5th, keep water container I and electronic balance I position motionless, test material, the string bag and rope are taken from water container I
Go out, start electronic balance I, suitable quantity of water is injected into water container I, ensure that water can flood test material completely in test process
Material；After electronic balance I registrations are stable, test material are immediately placed in water container I water, test material is filled with water immediately
Water submerged in container I, test start, and electronic balance I maximum registration is m during thism；At the same time, water inlet is opened to open
Close, from water inlet pipe water filling into water container II, until electronic balance II registration reaches mmWhen close water inlet switch immediately；
6th, water absorption rate and moisture content of the test material in random time t after test starts are obtained according to following calculation formula：
<mrow>
<msub>
<mi>&Delta;M</mi>
<mi>t</mi>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>m</mi>
<mrow>
<mi>t</mi>
<mn>2</mn>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>m</mi>
<mrow>
<mi>t</mi>
<mn>1</mn>
</mrow>
</msub>
</mrow>
<mi>t</mi>
</mfrac>
<mo>;</mo>
</mrow>
In formula：
--- water absorption rate of the test material when the time is t after test starts, %；
--- moisture content of the test material when the time is t after test starts, %；
ΔMt--- test is when to start the rear time be t, the rate of change of test material quality, g/s；
T --- the time that test is tested after starting, s；
m0--- the quality of test material, g before test starts；
m1--- test material is free of quality during Free water, g；
mt1--- test is when to start the rear time be t, electronic balance I registration, g；
mt2--- test is when to start the rear time be t, electronic balance II registration, g.
9. the method for the Concrete Material water absorption rate of monitoring in real time according to claim 7, it is characterised in that if m0It is not to survey
Examination material is free of weight during Free water, then after terminating to test material test, test material is dried to without freely watery
State, dried test material is placed on after being cooled to room temperature in drier, the quality for measuring test material is m1。
10. the method for the Concrete Material water absorption rate of monitoring in real time according to claim 1, it is characterised in that the test
Upper surface, side and the bottom surface of material carry out selective sealing with the encapsulant of exclusion of water.
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| CN110987709A (en) * | 2019-12-13 | 2020-04-10 | 河海大学 | Method for rapidly predicting dry density, water content and water absorption of aerated concrete discharged from kettle |
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| CN110987709B (en) * | 2019-12-13 | 2021-04-27 | 河海大学 | Method for rapidly predicting dry density, water content and water absorption of aerated concrete discharged from kettle |
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