CN109238798A - A kind of quick filling-in method in concrete core sample end face - Google Patents
A kind of quick filling-in method in concrete core sample end face Download PDFInfo
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- CN109238798A CN109238798A CN201811009439.5A CN201811009439A CN109238798A CN 109238798 A CN109238798 A CN 109238798A CN 201811009439 A CN201811009439 A CN 201811009439A CN 109238798 A CN109238798 A CN 109238798A
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- core sample
- filling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/245—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing perpendicularity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a kind of quick filling-in methods in concrete core sample end face, the characteristics of this method, is that it uses thermostatical oil bath across heat medium heating melting sulphide mastic, to enable sulphide mastic to reach good mobility, simultaneously by the way that the high substrate steel sheet of rate of heat transfer is replaced with the low glass panel substrate of rate of heat transfer, leave worker's sufficient operating time for, in addition, by in advance in substantially brushing release agent, sulphide mastic is avoided to adhere to substrate, pass through the combination of above-mentioned means, to significantly improve filling-in efficiency, and filling-in failure probability when significantly reducing inspection.
Description
Technical field
The present invention relates to a kind of concrete core sample end face filling-in methods.
Background technique
Concrete core sample is the sample that drills through as required from concrete component for detection concrete strength.
After sample obtains, it need to generally be cut, be polished and/or end face filling-in, so that core sample sample meets specification as bored
Core method detects concrete strength technical regulation CECS 03:2007 requirement.
Above-mentioned regulatory requirements, the end face irregularity degree of core sample test specimen are not more than 0.1mm in 100mm length range.For up to
To above-mentioned purpose, construction engineering test mechanism mainly uses following processing technology at present:
1) machinery is carried out after cutting to polish；
2) after cutting, first machinery is polished, and then passes through cement paste filling-in；
3) after cutting, first machinery is polished, and then passes through sulphide mastic filling-in.
Different processing technologys compare:
Technique (1): machinery, which polishes, is extremely difficult to technical requirements, and only part is very skilled and the experienced technical staff talent
Above-mentioned requirements can be ground to.
Technique (2): comparing and use technique (1), easy to accomplish, but there is also its disadvantages for technique (2): cement paste is by water
Slurry made of a certain amount of water mix is added in mud, and needing after cement paste filling-in just can be with demoulding, just after cement reaches initial set
The solidifying time is generally 2~3h, also needs for core sample to be transferred in curing box after initial set and continues maintenance 3~7 days, after natural drying
It can carry out compressive strength test；Moreover, the cement slurry as filling-in layer is also easy to shrinkage cracking in the drying process, lead to not
Test；In addition, the concrete core sample of high grade, also tends to cause filling-in layer first because the intensity of cement paste is insufficient
It is destroyed in concrete core sample, loses filling-in effect.
Technique (3): technique (3) in terms of the processing step of filling-in with technique (2) almost, be all by base-material slurry or molten
The sulphide mastic melted is coated on smooth substrate, then holds core sample, end face presses down towards the base-material shakeout, then waits
Base-material solidification.In comparison, since base-material is using sulphide mastic in technique (3), and sulphide mastic intensity is high, shrinks
It is small, and 10~15s can harden demoulding after filling-in, can directly be tested without maintenance, so it can not only be greatly shortened
Test period, and be not in phenomena such as filling-in layer cracks.
To sum up, technique (2) uses cement paste filling-in, low efficiency needs to conserve, and test period is long, filling-in failure
Probability is high.In comparison, technique (3) uses sulphide mastic filling-in, and speed is fast, and without maintenance, test period is short, is not in
Cracking or filling-in layer do sth. in advance destruction problem.So in contrast, technique (3) is more preferably.
The sulphide mastic used in technique (3) is a kind of cold hard material of thermoplastic, is in solid-state under room temperature, melting temperature is
180 DEG C~220 DEG C.In above-mentioned technique, generalling use electromagnetic oven or baking oven to heat sulphide mastic makes its melting, but often because of heating
The sulphide mastic of unevenness, bottom has been sticking, but also unfused, the clay of good fluidity required for cannot obtaining on top,
Cause filling-in layer too thick also or the problems such as can not utilize.In addition, aforesaid substrate generally uses the preferable stainless steel plate of flatness,
Since the heat transfer rate of steel plate is very fast, the clay of melting is caused to harden quickly, the operating time for leaving worker for is too short, moreover, glue
After mud solidification, when demoulding, it is also easy to appear adhesion phenomenon.Above-mentioned various reasons cause the filling-in efficiency of technique (3) still to need
It improves, even if after filling-in, checking that the probability of unqualified failure is also higher.
Summary of the invention
It is high-efficient that goal of the invention of the invention is to provide a kind of filling-in, and filling-in failure probability is lower mixed when inspection
The solidifying quick filling-in method in core sample end face, filling-in method of the present invention it is quick, be based primarily upon filling-in base-material that it is used as sulphur
Clay, since the binder cures time usually only needs 10-15s, so speed is greatly greatly compared to cement paste filling-in is used
Fastly.
Goal of the invention of the invention is achieved through the following technical solutions: a kind of quick filling-in method in concrete core sample end face,
Include the following steps:
The cutting of step 1) concrete core sample polishes, and obtains core sample sample；
Step 2) melts sulphide mastic
Prepare thermostatical oil bath one, pours into heat medium in the heating chamber of thermostatical oil bath, sample pot is put into it
In, and appropriate sulphide mastic is put into sample pot, so that sulphide mastic is heated to molten condition across medium；
Step 3) filling-in
3-1) prepare one piece of glass plate, lie near thermostatical oil bath, then coats one layer on the glass plates and take off
Mould agent；
3-2) prepare one spoon, the sulphide mastic of molten condition is transferred on the glass plate, core sample is then held
Sample, end face press down towards the sulphide mastic shakeout, and core sample sample is removed after sulphide mastic hardening, and removal periphery is extra
Sulphide mastic, complete one side filling-in work；
3-3) repeat step 3-2) complete another side filling-in work；
Step 4) checks
If not meeting code requirement, sulphide mastic layer is knocked out, repeats step 3-2) and its subsequent step.
In above-mentioned process:
In step 2), the heat medium non-volatile toxic, pernicious gas during heating.
In step 2), the heat medium recommends to use sand, i.e., using sulphide mastic described in sand bath heating melting；It can also
It is not less than 270 DEG C of liquid using flash-point, it is desirable that liquid flash-point is higher than 50 DEG C of sulphide mastic highest melting temperature or more, main to protect
Card safety such as uses 270 DEG C -300 DEG C of flash-point of silicone oil.
In step 3), the glass plate preferred thickness is not less than 10mm, and length and width dimensions are not less than 300mm.
In step 3), the capacity of the spoon is preferably 20-25ml.
In step 3), the not sticky substance of the easy brushing such as machine oil, silicone oil is can be used in the release agent.
The preferred 10mm-150mm of the thickness of the glass plate, length and width dimensions recommend mm, length one between 300mm-400
As be greater than or equal to width, can be obtained when which is based primarily upon one man operation peak efficiency consideration.
The utility model has the advantages that
1) present invention heats sulphide mastic across heat medium using thermostatical oil bath, and because being heated evenly, sulphide mastic is not
Lamination can be generated, the clay of acquisition has good mobility, and is far below steel since substrate uses rate of heat transfer
The glass plate of plate, worker have the longer operating time, in addition, also solving sulphur glue in substantially first upper one layer of release agent
The problem of mud easy adhesion, the above-mentioned combination to sulphide mastic concrete core sample end face filling-in process modification means not only can be obvious
Improve filling-in efficiency, filling-in failure probability when can also significantly reduce inspection；Traditional sulphide mastic concrete core sample end face filling-in side
1 hour core sample sample that can be filling-in 30 or so of method, when inspection, have 5-6 needs to do over again；It, 1 hour can using the method for the present invention
Filling-in 100 or so core sample samples, and only have 3-4 needs to do over again when inspection.
2) heat medium of the present invention is using toxic, pernicious gas substances that will not volatilize such as sand, silicone oil, and requires to be used for
Liquid as heat medium has higher flash point, even if so as to after flash-point decline is used for a long time, it will not be because of for a long time
Heating causes the safety accidents such as flash burn.
Specific embodiment
Embodiment one
Step 1: concrete core sample cuts, polishes, core sample sample is obtained
(1) concrete core sample is cut to conform to the sample of requirement for height by cutting equipment, according to current specifications, Gao Jing
Than control in 0.95~1.05 range, such as the core sample of diameter 100mm, height should be controlled in 95mm~105mm after cutting.
(2) after cutting, two end faces of core sample are polished flat using sander.
Step 2: melting sulphide mastic
(1) prepare thermostatical oil bath one, heat medium (in the case where no additional conditions, is dodged using 300 DEG C of flash-point
Point refer generally to measure under room temperature, normal pressure) silicone oil, the silicone oil volume of addition is about the 1/2 of thermostatical oil bath heating chamber volume,
Stainless steel sample pot is put into wherein；(2) sulphide mastic is put into sample pot, connects thermostatical oil bath power supply, adjust temperature
It at 200 DEG C, closes the lid, makes sulphide mastic heating melting, heating time general 40~60min, until the sulphide mastic in pot
Melting is without fragment completely.
Step 3: filling-in
(1) preparing one piece of glass plate, thickness 10mm-150mm, length and width dimensions are long >=wide between 300mm-400mm,
It lies on the table top near thermostatical oil bath, table top requirement is smooth firm, coats thin layer release agent on a glass such as
Hydraulic engine oil；
(2) sulphide mastic of molten condition is transferred to glass rapidly by the spoon that preparation one is about 25ml volume, laboratory technician
In glass plate, core sample sample is held, is pressed down towards the sulphide mastic surface shakeout, after 10-15s, hardened, take to sulphide mastic
Lower core sample sample, and the extra sulphide mastic in periphery is removed, complete the filling-in work of one side；The step is repeated, another side is completed
Filling-in work.
Step 4: checking
Using the core sample sample end face flatness and verticality after flatness ruler and vernier protractor measurement filling-in, when not being inconsistent
When closing code requirement, both ends of the surface sulphide mastic layer is knocked out, then the filling-in step for repeating both ends of the surface reexamines.
Embodiment two
Step 1: concrete core sample cuts, polishes, core sample sample is obtained
(1) concrete core sample is cut to conform to the sample of requirement for height by cutting equipment, according to current specifications, Gao Jing
Than controlling in 0.95~1.05 range.
(2) after cutting, two end faces of core sample are polished flat using sander.
Step 2: melting sulphide mastic
(1) prepare thermostatical oil bath one, heat medium uses flash-point for 270 DEG C of silicone oil, and the silicone oil volume of addition is about
It is the 1/2 of thermostatical oil bath heating chamber volume, stainless steel sample pot is put into wherein；
(2) sulphide mastic is put into sample pot, connects thermostatical oil bath power supply, adjusted temperature at 180 DEG C, close the lid
Son makes sulphide mastic heating melting, heating time general 40~60min, until the sulphide mastic in pot is melted without fragment completely.
Step 3: filling-in
(1) preparing one piece of glass plate, thickness 10mm-150mm, length and width dimensions are long >=wide between 300mm-400mm,
It lies on the table top near thermostatical oil bath, table top requirement is smooth firm, coats thin layer release agent on a glass such as
Hydraulic engine oil；
(2) sulphide mastic of molten condition is transferred to glass rapidly by the spoon that preparation one is about 20ml volume, laboratory technician
In glass plate, core sample sample is held, is pressed down towards the sulphide mastic surface shakeout, after 10-15s, hardened, take to sulphide mastic
Lower core sample sample, and the extra sulphide mastic in periphery is removed, complete the filling-in work of one side；The step is repeated, another side is completed
Filling-in work.
Step 4: checking
Using the core sample sample end face flatness and verticality after flatness ruler and vernier protractor measurement filling-in, when not being inconsistent
When closing code requirement, both ends of the surface sulphide mastic layer is knocked out, then the filling-in step for repeating both ends of the surface reexamines.
Embodiment three
Step 1: concrete core sample cuts, polishes, core sample sample is obtained
(1) concrete core sample is cut to conform to the sample of requirement for height by cutting equipment, according to current specifications, Gao Jing
Than controlling in 0.95~1.05 range.
(2) after cutting, two end faces of core sample are polished flat using sander.
Step 2: melting sulphide mastic
(1) prepare thermostatical oil bath one, heat medium uses sand, and the sand volume of addition is about that thermostatical oil bath adds
The 1/2 of hot chamber volume, stainless steel sample pot is put into wherein；(2) sulphide mastic is put into sample pot, connects thermostatical oil bath
Power supply adjusts temperature at 220 DEG C, closes the lid, make sulphide mastic heating melting, heating time general 40~60min, until pot
Interior sulphide mastic is melted without fragment completely.
Step 3: filling-in
(1) preparing one piece of glass plate, thickness 10mm-150mm, length and width dimensions are long >=wide between 300mm-400mm,
It lies on the table top near thermostatical oil bath, table top requirement is smooth firm, coats thin layer release agent on a glass such as
Hydraulic engine oil；
(2) sulphide mastic of molten condition is transferred to glass rapidly by the spoon that preparation one is about 23ml volume, laboratory technician
In glass plate, core sample sample is held, is pressed down towards the sulphide mastic surface shakeout, after 10-15s, hardened, take to sulphide mastic
Lower core sample sample, and the extra sulphide mastic in periphery is removed, complete the filling-in work of one side；The step is repeated, another side is completed
Filling-in work.
Step 4: checking
Using the core sample sample end face flatness and verticality after flatness ruler and vernier protractor measurement filling-in, when not being inconsistent
When closing code requirement, both ends of the surface sulphide mastic layer is knocked out, then the filling-in step for repeating both ends of the surface reexamines.
The advantages of thermostatical oil bath, is homogeneous heating, heats sulphide mastic using thermostatical oil bath, will not generate layering
Phenomenon.It is preferred that using the higher silicone oil of flash-point, sand as heat medium, because its will not volatilize during heating it is poisonous and harmful
Gas, flash-point is sufficiently high, and the safety accidents such as flash burn will not be caused because of long-time heating.
The sulphide mastic used in the present invention is the cold hard material of thermoplastic, and setting rate is quickly, net compared to using cement
Filling-in is starched, speed is greatly speeded up.In addition, being used as using glass plate substantially compared to steel plate is used, due to the heat transfer speed of glass plate
Degree is far smaller than steel plate, so worker's more fully operating time can be left for, is conducive to after improving filling-in efficiency, reducing filling-in
Crash rate.Moreover, the surface smoothness of glass plate in the market is usually quite, far smaller than 0.1mm, so glass plate sheet
Body is also very suitable for for making substrate.
To sum up, not only filling-in speed is fast but also high-efficient for the method for the present invention, filling-in failure probability is low, according to statistics, passes
It unites 1 hour core sample sample that can be filling-in 30 or so of sulphide mastic concrete core sample end face filling-in method, there are 5-6 need in when inspection
It does over again；But the method for the present invention is used, 1 hour core sample sample that can be filling-in 100 or so, and there was only 3-4 need when inspection
It does over again.
Claims (9)
1. a kind of quick filling-in method in concrete core sample end face, which comprises the steps of:
The cutting of step 1) concrete core sample polishes, and obtains core sample sample；
Step 2) melts sulphide mastic
Prepare thermostatical oil bath one, pours into heat medium in the heating chamber of thermostatical oil bath, sample pot is put into wherein, and
It is put into sulphide mastic in sample pot, so that sulphide mastic is heated to molten condition across medium；
Step 3) filling-in
3-1) prepare one piece of glass plate, lies near thermostatical oil bath, then coat one layer of release agent on the glass plates；
3-2) prepare one spoon, the sulphide mastic of molten condition be transferred on the glass plate, core sample sample is then held,
End face presses down towards the sulphide mastic shakeout, and core sample sample, the extra sulphur in removal periphery are removed after sulphide mastic hardening
Sulphur clay completes the filling-in work of one side；
3-3) repeat step 3-2) complete another side filling-in work；
Step 4) checks
If not meeting code requirement, sulphide mastic layer is knocked out, repeats step 3-2) and its subsequent step.
2. the quick filling-in method in concrete core sample end face according to claim 1, which is characterized in that described in step 2)
Heat medium non-volatile toxic, pernicious gas during heating.
3. the quick filling-in method in concrete core sample end face according to claim 2, which is characterized in that described in step 2)
Heat medium uses sand, i.e., using sulphide mastic described in sand bath heating melting, or the liquid using flash-point not less than 270 DEG C.
4. the quick filling-in method in concrete core sample end face according to claim 3, which is characterized in that described in step 2)
270 DEG C -300 DEG C of liquid flash-point.
5. the quick filling-in method in concrete core sample end face according to claim 4, which is characterized in that described in step 2)
Liquid uses 270 DEG C -300 DEG C of flash-point of silicone oil.
6. the quick filling-in method in concrete core sample end face according to claim 1, which is characterized in that described in step 3)
The thickness of glass plate is not less than 10mm, and length and width dimensions are not less than 300mm.
7. the quick filling-in method in concrete core sample end face according to claim 1, which is characterized in that described in step 3)
The capacity of spoon is 20-25ml.
8. the quick filling-in method in concrete core sample end face according to claim 1, which is characterized in that described in step 3)
Release agent uses machine oil or silicone oil.
9. the quick filling-in method in concrete core sample end face according to claim 6, which is characterized in that the thickness of the glass plate
10mm-150mm is spent, length and width dimensions are between 300mm-400mm.
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Cited By (2)
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| CN111217585A (en) * | 2020-01-16 | 2020-06-02 | 中交第四公路工程局有限公司 | Method for quickly filling concrete core sample by using sulfur plaster |
| CN111533528A (en) * | 2020-05-07 | 2020-08-14 | 佛山市建筑工程质量检测站 | Sulfur mastic for concrete core sample leveling and preparation method and application thereof |
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| CN111217585A (en) * | 2020-01-16 | 2020-06-02 | 中交第四公路工程局有限公司 | Method for quickly filling concrete core sample by using sulfur plaster |
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| CN111533528A (en) * | 2020-05-07 | 2020-08-14 | 佛山市建筑工程质量检测站 | Sulfur mastic for concrete core sample leveling and preparation method and application thereof |
| CN111533528B (en) * | 2020-05-07 | 2022-03-08 | 佛山市建筑工程质量检测站 | Sulfur mastic for concrete core sample leveling and preparation method and application thereof |
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Application publication date: 20190118 |
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| RJ01 | Rejection of invention patent application after publication |