CN108225472A - A kind of method and system for measuring cement base test specimen cracking degree - Google Patents
A kind of method and system for measuring cement base test specimen cracking degree Download PDFInfo
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- CN108225472A CN108225472A CN201810300575.3A CN201810300575A CN108225472A CN 108225472 A CN108225472 A CN 108225472A CN 201810300575 A CN201810300575 A CN 201810300575A CN 108225472 A CN108225472 A CN 108225472A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
The invention discloses a kind of method and system for measuring cement base test specimen cracking degree, wherein, described method includes following steps：Cement base test specimen with several crack areas is placed in the filler of liquid, makes the inside of several crack areas of the filler full of cement base test specimen of liquid；The filler of cooling liquid state simultaneously makes its solidification, takes out cement base test specimen, cement base test specimen is heated so that the filler of the inside of several crack areas is melted out；It collects the filler of outflow and weighs its quality, the volume of the filler of outflow is calculated by scheduled mass density relationship, so as to obtain the total volume in cement base test specimen all slits region.By the method and system of the measurement cement base test specimen cracking degree in the present invention, the measurement of variously-shaped concrete sample crevice volume is can be widely applied to, and conveniently provide experiment basis for the evaluation of concrete self-healing properties and other Experimental Investigation on Durability.
Description
Technical field
The present invention relates to cement-based material self-repair technology field, more particularly to a kind of measurement cement base test specimen cracking degree
Method and system.
Background technology
Cement-based material is one of the most widely used material in modern architecture investigation of materials, particularly concrete material
Material.At present, the research of cement-based material self-healing properties is the hot spot of current civil engineering material research, and the reparation journey in crack
Degree is one of index for evaluating self-repair efficiency.In order to evaluate the reparation degree in crack, the volume of fracture is needed to measure.
Traditional crevice volume is measured mainly through the reconstruction and analysis of distress in concrete face three-D profile.If directly use such side
Method then needs to introduce particular instrument equipment, computer program programming, and data handling procedure is numerous and diverse.Also, due to being fracture surface
Measurement, the surface profile of concrete sample fracture surface can only be measured, crack total volume is substantially obtained, can not accurately be measured
The volume in each crack of concrete sample.
Meanwhile existing measuring method mainly has electricity to be measured microscopically crack method, however its also can only rough measure mix
The mean breadth of solidifying soil surface crack or the crack mouthful gross area.So existing both methods is difficult to realize concrete sample
The accurate measurement of crevice volume.
In addition, when testing spherical concrete sample, since board is smooth flat, sample is caused to have what is shifted
Thus possibility, the stability of test experiments can also be affected.
Thus the prior art could be improved and improve.
Invention content
Part in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of measurement cement base test specimen crackings
The method and system of degree, the measurement for being widely used in variously-shaped concrete sample crevice volume that can be convenient and simple are
Concrete self-healing properties are evaluated and other Experimental Investigation on Durability provide experiment basis.
In order to achieve the above object, this invention takes following technical schemes：
A kind of method for measuring cement base test specimen cracking degree, includes the following steps：
Filling concrete base test specimen：Cement base test specimen with several crack areas is placed in the filler of liquid, makes liquid
Filler full of cement base test specimen several crack areas inside；
Obtain filler to be measured：The filler of cooling liquid state simultaneously makes its solidification, takes out cement base test specimen, and cement base test specimen is heated
So that the filler of the inside of several crack areas is melted out；
Acquire crack area volume：It collects the filler of outflow and weighs its quality, calculated by scheduled mass density relationship
The volume of the filler of outflow, so as to obtain the total volume in cement base test specimen all slits region.
In the method for the measurement cement base test specimen cracking degree, described by the cement with several crack areas
Base test specimen is placed in the filler of liquid, makes the inside of several crack areas of the filler full of cement base test specimen of liquid
Before step, step is further included：
The portion envelops other than several crack areas on cement base test specimen are sealed using sealing element.
In the method for the measurement cement base test specimen cracking degree, if using sealing element will be on cement base test specimen described
Before the step of portion envelops other than dry crack area seal, step is further included:
Mark the position in all slits region of cement base test specimen.
It is described by the cement base with several crack areas in the method for the measurement cement base test specimen cracking degree
Test specimen is placed in the filler of liquid, makes the step of the inside of several crack areas of the filler full of cement base test specimen of liquid
Suddenly it specifically includes：
Solid filler is placed in vacuum ware, heating, vacuum ware makes filler be molten into liquid, then will be split with several
The cement base test specimen in seam region is placed in the filler of liquid；
Vacuum ware is sealed, air is extracted to vacuum ware using vacuum pump, the filler of liquid is made to be completely filled with cement base test specimen
The inside of several crack areas；
Vacuum pump is made to be stopped.
In the method for the measurement cement base test specimen cracking degree, the filler of the cooling liquid state simultaneously makes its solidification,
Cement base test specimen is taken out, cement base test specimen is heated so that the step of filler of the inside of several crack areas is melted out
It specifically includes：
The filler of cooling liquid state simultaneously makes its solidification, takes out the cement base test specimen after filling and removes sealing element and crack area
The filler on surface；
Cement base test specimen is placed in water heating, the filler of the inside of several crack areas on cement base test specimen is made to melt stream
Go out.
In the method for the measurement cement base test specimen cracking degree, the filler is filled for wax filler or lipid
Object.
A kind of system for measuring cement base test specimen cracking degree, including：
Cement base test specimen with several crack areas；
For the filler of liquid to be full of to the filling device of the inside of several crack areas of cement base test specimen；
For being heated to cement base test specimen so that the heating unit that the filler of the inside of several crack areas is melted out；
The meausring apparatus measured for the quality of the filler to outflow.
In the system of the measurement cement base test specimen cracking degree, on the cement base test specimen several crack areas with
Outer bonding partially has sealing element.
In the system of the measurement cement base test specimen cracking degree, the filling device includes water-bath, vacuum ware, true
Sky pump, tracheae and filler, the vacuum ware are set to the inside of water-bath, and the filler is set to the inside of vacuum ware,
The vacuum pump connects the inside of vacuum ware by tracheae.
In the system of the measurement cement base test specimen cracking degree, the drying for filler to be dried is further included
Device.
Compared to the prior art, the present invention provides a kind of method and system for measuring cement base test specimen cracking degree, wherein,
The method includes including the following steps：Filling concrete base test specimen：Cement base test specimen with several crack areas is placed in
In the filler of liquid, make the inside of several crack areas of the filler full of cement base test specimen of liquid；Obtain to be measured fill out
Fill object：The filler of cooling liquid state simultaneously makes its solidification, takes out cement base test specimen, cement base test specimen is heated so that several cracks
The filler of the inside in region is melted out；Acquire crack area volume：It collects the filler of outflow and weighs its quality, pass through
Scheduled mass density relationship calculates the volume of the filler of outflow, so as to obtain the totality in cement base test specimen all slits region
Product.Not only easy to operate by the method and system of the measurement cement base test specimen cracking degree in the present invention, repeatability is high,
It does not need to introduce particular device, and cost is relatively low, convenient for being widely used in the survey of variously-shaped concrete sample crevice volume
Amount, so as to easily provide experiment basis for the evaluation of concrete self-healing properties and other Experimental Investigation on Durability.
Description of the drawings
Fig. 1 is the preferred embodiment of cement base test specimen in the system provided by the invention for measuring cement base test specimen cracking degree
Structure diagram.
Fig. 2 is the preferred embodiment of filling device in the system provided by the invention for measuring cement base test specimen cracking degree
Structure diagram.
Fig. 3 is the flow chart of the method provided by the invention for measuring cement base test specimen cracking degree.
Fig. 4 is the flow chart of step S100 in the method provided by the invention for measuring cement base test specimen cracking degree.
Fig. 5 is the flow chart of step S200 in the method provided by the invention for measuring cement base test specimen cracking degree.
In figure, 10, cement base test specimen；11st, crack area；12nd, sealing element；20th, water-bath；30th, vacuum ware；40th, vacuum
Pump；50th, tracheae；60th, filler.
Specific embodiment
The present invention provides a kind of method and system for measuring cement base test specimen cracking degree, to make the purpose of the present invention, skill
Art scheme and effect are clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should manage
Solution, specific embodiment described herein only to explain the present invention, are not intended to limit the present invention.
The system of measurement cement base test specimen cracking degree in the present invention includes cement base test specimen to be measured, please refers to figure
1, the structure diagram of the preferred embodiment for cement base test specimen provided by the invention, the shape one of the cement base test specimen 10
As be it is cylindric, have several crack areas 11（It is only represented at wherein one in figure）, and on the cement base test specimen
Bonding partially other than several crack areas has sealing element 12 so that only has crack area 11 to expose on cement base test specimen 10
In air.The part that the present invention is exposed to by filling crack area in air at this time, then the volume of fill part is calculated, it can
Obtain the total volume of several crack areas.
In the system provided by the invention for measuring cement base test specimen cracking degree, further include for by the filler of liquid
The filling device of the inside of several crack areas full of cement base test specimen.Please continue to refer to Fig. 2, filled out to be provided by the invention
Fill the structure diagram for the preferred embodiment put, the filling device（Non- label in figure）Including water-bath 20, vacuum ware 30,
Vacuum pump 40, tracheae 50 and filler 60, the vacuum ware 30 are set to the inside of water-bath 20, and the filler 60 is set to
The inside of vacuum ware 30, the vacuum pump 40 connect the inside of vacuum ware 30 by tracheae 50.First under room temperature in vacuum ware
Filler is solid-state, when water-bath carries out continuous heating to vacuum ware the filler in vacuum ware is completely melt as liquid
Afterwards, cement base test specimen can be put into vacuum ware and be filled at this time, and vacuum ware is vacuumized by using vacuum pump, it can be with
The filler of liquid is accelerated completely to enter in the crack area of sample.
It is worth one, under the filler selected as room temperature in the present invention for solid-state, the fusible liquid that turns to after heating
Substance is selected specifically at -18~25 DEG C as solid-state, is liquid and substance not soluble in water at 35~80 DEG C, such as wax, fat
Particle wax of the fusing point at 58 DEG C or so is used Deng, the present embodiment.And work as using such as wax, fat substance as wax filler or fat
During matter filler, mobility is preferable after fusing, not only not soluble in water but also do not reacted with concrete sample, so as to avoid causing surveying
Measure error.
Sealing element in the present invention can be the good sealant tape of wrapping property, by using the good sealant tape of wrapping property
Part on sealed envelope cement base test specimen other than several crack areas can pass through glue of tearing after the filling of cement base test specimen
Band easily removes extra filler, that is, avoids the later stage and be difficult to scrape off the numerous of cement base sample remaining surface solidification wax completely
It is influenced caused by trivial and removal sample defect.
In the system provided by the invention for measuring cement base test specimen cracking degree, further include to add cement base test specimen
Heat is so that the filler of the inside of several crack areas melts the heating unit of outflow.The heating unit is concretely with filling out
Same water-bath in putting is filled, flows out and bubbles through the water column by heating water bath filler, then carry out salvaging collection.
In addition, it is provided by the invention measure cement base test specimen cracking degree system in, further include for filler into
The meausring apparatus that the dry drying device of row and the quality for the filler to outflow measure.The drying device tool
Body can be sopping rag or fan etc..For example, after filler flows out and is collected, can air-flow be generated by fan and taken away
The vapor on filler surface accelerates the evaporation of residual moisture in filler.Later, by meausring apparatus, such as balance, electronic scale
Deng being measured to the quality of dried filler, the filling being collected into calculated according to the mass density relationship of filler
The volume of object, you can obtain the total volume of crack area.
Based on the system of above-mentioned measurement cement base test specimen cracking degree, referring to Fig. 3, the present invention also provides a kind of measurement water
The method of mud base test specimen cracking degree, includes the following steps：
S100, filling concrete base test specimen：Cement base test specimen with several crack areas is placed in the filler of liquid, is made
The inside of several crack areas of the filler of liquid full of cement base test specimen；
S200, filler to be measured is obtained：The filler of cooling liquid state simultaneously makes its solidification, takes out cement base test specimen, and cement base is tried
Part heats so that the filler of the inside of several crack areas is melted out；
S300, crack area volume is acquired：It collects the filler of outflow and weighs its quality, pass through scheduled mass density relationship
The volume of the filler of outflow is calculated, so as to obtain the total volume in cement base test specimen all slits region.
Further, before the step S100, step is further included：
S101, the portion envelops other than several crack areas on cement base test specimen are sealed using sealing element.
Further, before step S1001, step is further included：
S102, mark cement base test specimen all slits region position.It can will specifically generate and with several cracks
The concrete sample in region is placed under the instrument that minute crack can be observed, such as optical microphotograph Microscopic observation all surface crack area
The position in domain, and mark crack location.Subsequently use what sealing adhesive plaster was sealed to the surface of non-crack area so as to convenient
Step improves the accuracy of sealing.
Specifically, referring to Fig. 4, the step S100 is specifically included：
S110, solid filler is placed in vacuum ware, heating, vacuum ware makes filler be molten into liquid, then will have several
The cement base test specimen of a crack area is placed in the filler of liquid；
S120, sealing vacuum ware extract air using vacuum pump to vacuum ware, and the filler of liquid is made to be completely filled with cement base examination
The inside of several crack areas of part；
S130, vacuum pump is made to be stopped.
More specifically, referring to Fig. 5, the step S200 is specifically included:
S210, cooling liquid state filler and make its solidification, take out filling after cement base test specimen simultaneously remove sealing element and crack
The filler on the surface in region；
S220, cement base test specimen is placed in water heating, makes the filler of the inside of several crack areas on cement base test specimen
It is melted out.
In order to better understand the present invention, below in conjunction with Fig. 1~Fig. 5 to measurement cement base test specimen cracking provided by the invention
The method of degree is described in detail：
Sealed envelope cracking test specimen：The concrete sample that a size is taken to be φ 100mm × 50mm, pressure testing machine is placed in by sample
Upper loading manufacture crack.The sample for having generated crack is placed in optical microphotograph Microscopic observation crack location, and is marked lower and with close
Sealing cloth wraps up crack proximal surface.
Liquid wax immerses crack：The particle wax that the present embodiment is about 58 DEG C using fusing point.Particle wax is placed in vacuum ware
It is placed in, in water-bath, being heated to 70 DEG C so that solid granulates wax is completely melt.The sample that upper step wraps is put at this time
In vacuum ware, it is fully immersed in liquid wax.About 30min is vacuumized with vacuum pump so that liquid wax to be accelerated to enter sample crack
In.
Clear up specimen surface wax：After upper step to be done, bath temperature is continuously decreased, when liquid wax solidifies completely,
Sample is taken out, is scraped off with pocket knife by wax extra on adhesive plaster and crack mouthful is covered in reuse, and adhesive plaster is torn,
Obtain being full of the concrete sample of wax in only crack.
Take out wax in sample crack：The sample finally obtained in 3 steps is soaked in temperature in 70 DEG C or so of hot water
About 30min treats that wax is completely melt and is flowed out from crack.Hot water is down to room temperature at this time, wax is solidified and floated on the water surface, is used
Close sieve pulls wax out, after being dried after wax face, wax is placed on balance and weighs quality, is calculated according to the mass density relationship of wax
The volume for the wax being collected into finally obtains crack total volume.
This embodiment avoids the introducings of particular device, and measuring process is easy, and economic performance is good, using such as works such as particle wax
It is not reacted for measurement medium with concrete sample and reusable, total crevice volume result of measurement is more accurate.
In conclusion the method and system provided by the invention for measuring cement base test specimen cracking degree, wherein, the method
Including including the following steps：Filling concrete base test specimen：Cement base test specimen with several crack areas is placed in filling out for liquid
It fills in object, makes the inside of several crack areas of the filler full of cement base test specimen of liquid；Obtain filler to be measured：Cooling
The filler of liquid simultaneously makes its solidification, takes out cement base test specimen, cement base test specimen is heated so that in several crack areas
The filler in portion is melted out；Acquire crack area volume：It collects the filler of outflow and weighs its quality, by scheduled
Mass density relationship calculates the volume of the filler of outflow, so as to obtain the total volume in cement base test specimen all slits region.It is logical
The method and system of the measurement cement base test specimen cracking degree in the present invention are crossed, not only easy to operate, repeatability is high, does not need to
Particular device is introduced, and cost is relatively low, convenient for being widely used in the measurement of variously-shaped concrete sample crevice volume, so as to
Can easily experiment basis be provided for the evaluation of concrete self-healing properties and other Experimental Investigation on Durability.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement should all belong to the guarantor of appended claims of the invention
Protect range.
Claims (10)
- A kind of 1. method for measuring cement base test specimen cracking degree, which is characterized in that include the following steps：Filling concrete base test specimen：Cement base test specimen with several crack areas is placed in the filler of liquid, makes liquid Filler full of cement base test specimen several crack areas inside；Obtain filler to be measured：The filler of cooling liquid state simultaneously makes its solidification, takes out cement base test specimen, and cement base test specimen is heated So that the filler of the inside of several crack areas is melted out；Acquire crack area volume：It collects the filler of outflow and weighs its quality, calculated by scheduled mass density relationship The volume of the filler of outflow, so as to obtain the total volume in cement base test specimen all slits region.
- 2. the method according to claim 2 for measuring cement base test specimen cracking degree, which is characterized in that will have described The cement base test specimen of several crack areas is placed in the filler of liquid, if the filler of liquid is made to be full of cement base test specimen Before the step of the inside of dry crack area, step is further included：The portion envelops other than several crack areas on cement base test specimen are sealed using sealing element.
- 3. the method according to claim 3 for measuring cement base test specimen cracking degree, which is characterized in that described using close Before the step of sealing seals the portion envelops other than several crack areas on cement base test specimen, step is further included:Mark the position in all slits region of cement base test specimen.
- 4. the method according to claim 3 for measuring cement base test specimen cracking degree, which is characterized in that if described will have The cement base test specimen of dry crack area is placed in the filler of liquid, and the filler for making liquid is several full of cement base test specimen The step of the inside of a crack area specifically includes：Solid filler is placed in vacuum ware, heating, vacuum ware makes filler be molten into liquid, then will be split with several The cement base test specimen in seam region is placed in the filler of liquid；Vacuum ware is sealed, air is extracted to vacuum ware using vacuum pump, the filler of liquid is made to be completely filled with cement base test specimen The inside of several crack areas；Vacuum pump is made to be stopped.
- 5. the method according to claim 4 for measuring cement base test specimen cracking degree, which is characterized in that the cooling liquid state Filler and make its solidification, take out cement base test specimen, the inside so that several crack areas heated to cement base test specimen The step of filler is melted out specifically includes：The filler of cooling liquid state simultaneously makes its solidification, takes out the cement base test specimen after filling and removes sealing element and crack area The filler on surface；Cement base test specimen is placed in water heating, the filler of the inside of several crack areas on cement base test specimen is made to melt stream Go out.
- 6. the method according to claim 1 for measuring cement base test specimen cracking degree, which is characterized in that the filler is Wax filler or lipid filler.
- 7. a kind of system for measuring cement base test specimen cracking degree, which is characterized in that including：Cement base test specimen with several crack areas；For the filler of liquid to be full of to the filling device of the inside of several crack areas of cement base test specimen；For being heated to cement base test specimen so that the heating unit that the filler of the inside of several crack areas is melted out；The meausring apparatus measured for the quality of the filler to outflow.
- 8. the system according to claim 1 for measuring cement base test specimen cracking degree, which is characterized in that the cement base examination Bonding partially on part other than several crack areas has sealing element.
- 9. the system according to claim 1 for measuring cement base test specimen cracking degree, which is characterized in that the filling device Including water-bath, vacuum ware, vacuum pump, tracheae and filler, the vacuum ware is set to the inside of water-bath, the filler The inside of vacuum ware is set to, the vacuum pump connects the inside of vacuum ware by tracheae.
- 10. the system according to claim 1 for measuring cement base test specimen cracking degree, which is characterized in that further include and be used for The drying device that filler is dried.
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| CN110702684A (en) * | 2019-09-12 | 2020-01-17 | 江苏吉星新材料有限公司 | Method for detecting defects of sapphire wafer |
| CN111257153A (en) * | 2020-02-12 | 2020-06-09 | 首钢集团有限公司 | Device and method for evaluating degree of blockage of submersed nozzle |
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