CN105372144B - A kind of method that zones values in carry out overall calibration to reisilometer - Google Patents
A kind of method that zones values in carry out overall calibration to reisilometer Download PDFInfo
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- CN105372144B CN105372144B CN201510867903.4A CN201510867903A CN105372144B CN 105372144 B CN105372144 B CN 105372144B CN 201510867903 A CN201510867903 A CN 201510867903A CN 105372144 B CN105372144 B CN 105372144B
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Abstract
The present invention relates to Architectural Equipment detection technique field, and in particular to a kind of method that zones values in carry out overall calibration to reisilometer.The method that the zones values provided by the invention in carry out overall calibration to reisilometer, the reference block of a variety of intensity is made by different match ratios using reference cement, normal sand and pure water, with the test block come calibration reisilometer, calibration is carried out to the middle zones values of reisilometer and Whole verification is carried out to reisilometer.The present invention carries out calibration on mortar specimen, achieves the invention effect for the true detection case for being closer to concrete surface layer.
Description
Technical field
The present invention relates to Architectural Equipment detection technique field, and in particular to one kind zones values in carry out overall to reisilometer
The method of calibration.
Background technology
Reisilometer is to detect one of the most frequently used instrument of concrete strength, and whether reisilometer is in standard state meeting during detection
Directly affect testing result.There are reisilometer following situations to answer censorship order position to examine and determine for the moment：
1st, before new reisilometer enables；
2nd, more than calibrating period of validity, the general term of validity is half a year；
3rd, attack number is added up more than 6000 times；
4th, rebound number on anvil is unqualified after general maintenance；
5th, by hard impacts or other infringements.
In the prior art, the standard state of reisilometer is controlled by following method, at present the calibrating of reisilometer
Method includes：Reisilometer is delivered into legal metrological service to examine and determine it, reisilometer need to be typically taken apart during calibrating, it is led
Part is wanted to be examined and determine as follows：Position of rule, pointer length, pointer frictional force, attack boom end spherical radius, elastic hammer break off relations
The indexs such as position, the rigidity of elastic tension spring, the active length of elastic tension spring and elastic hammer take-off position are examined and determine one by one, calibration
Reisilometer is assembled again after qualified, a Whole verification can not be carried out to whole reisilometer.
The calibration of reisilometer includes at present：
1) rating method：Make calibration test on the riveting stake that Rockwell hardness HRC is 60 ± 2.Reisilometer calibration test preferably exists
Dry, room temperature is carried out under conditions of being 5~35 DEG C, and riveting stake should be firmly lain on the big object of rigidity, when determining rebound value,
The continuous stable resilience average value of attack downwards three times is taken, elastic stem should rotate in four times, and rotation every time is preferably 90 °, elastic stem
The calibration average value often rotated once should be 80 ± 2；
2) calibration time requirement：Reisilometer all should carry out calibration test before and after engineering detecting.
The problem of above-mentioned rating method is present：
1) calibrating is sub-unit calibrating, rather than the overall performance of reisilometer is examined and determine, and uncertified components also can
Error is brought to the accuracy of reisilometer, so the method for sub-unit calibrating needs to be further improved；
2) simply carry out calibration during calibration to the point (maximum) of rebound value 80 ± 2, and the height of rebound value be not with
The proportional relation of hardness of resilience thing, non-rectilinear relation, that is to say, that the point between 0~80 is not a linear relation, only
Calibration maximum rebound value 80 ± 2, it can not illustrate that reisilometer intermediate value is also accurate without calibration median；
3) coefficient of friction of reisilometer slide bar in use for some time can change, this change centering area rebound value
Have a great influence, and it is 60 ± 2 to be not easy to be found when making calibration on riveting stake that these, which are influenceed in Rockwell HRC, and in routine testing
During, using when rate definite value identical reisilometer on riveting stake detects same concrete component, there is larger difference in testing result
Different situation happens occasionally.
Chinese patent CN102661904A discloses reisilometer rebound value calibration device and reisilometer rebound value method of testing, returns
Play instrument rebound value calibration device, including attack area (11), deformed area (12) and fixed area (13).Reisilometer rebound value test side
Method, including reisilometer carry out attack operation to reisilometer rebound value calibration device；By reisilometer display data and reisilometer rebound value
The rated value of calibration device such as is compared at the step.But the patent does not disclose the zones values in and carries out overall calibration to reisilometer
Method.
The content of the invention
The defects of in order to overcome in the prior art, the zones values provided by the invention in carry out overall calibration to reisilometer
Method, the reference block of a variety of intensity is made by different match ratios with reference cement, normal sand and pure water, with the test block come
Calibration reisilometer；Calibration is carried out to the middle zones values of reisilometer, Whole verification is carried out to reisilometer.
The present invention is achieved through the following technical solutions：A kind of zones values in carry out the side of overall calibration to reisilometer
Method, comprise the following steps：
Step 1) reference cement, normal sand and pure water, will using fixed match ratio mixing into standard fresh mortar
Standard specimen is made using standard steel die trial in the standard fresh mortar, and indoor temperature during making remains 21~25 DEG C,
Form removal in 24 hours；
Step 1) the standard specimen is sent into standard curing room by step 2), and curing temperature is 18~22 DEG C, maintenance humidity
For more than 95%, conserve within 14 days, then the standard specimen is sent into dry foster room and conserved, curing temperature is 18~22
DEG C, maintenance humidity 50%, self-forming conserves to standby after 28 days day；
Step 3) repeatedly adjusts the match ratio of reference cement, normal sand and pure water, is fabricated to the standard examination of varying strength
Part several, every time adjust match ratio after, make the resilience value changes of standard specimen 10 or so；
The standard specimen that maintenance 28 days is obtained in step 2) is placed on forcing press by step 4), loads 40-100KN perseverance lotus pressures
Power, the intensity of the size establishing criteria test block of the permanent lotus pressure changes different pressures from small to large, with the resilience of standard state
Instrument, rebound test is carried out on two relative sides of the standard specimen, each side selects 8 resilience measuring points, is obtained 16
Individual rebound value；
Step 5) carries out standard testing respectively on the test specimen of varying strength, obtains the resilience of the test specimen of various varying strengths
Average value, the resilience standard value R using the value as each varying strength reference blockm,i；
Step 6) carries out calibration to the reisilometer of unknown state：The reisilometer of unknown state is returned on standard specimen
Bullet is tested, and resilience method is identical by step 4) with computational methods, the resilience average value of the reisilometer is obtained, as the reisilometer
Rate definite value R in the reference blockm,x；
The reisilometer of unknown state is carried out calibration, rate definite value by step 7) in the standard specimen no less than two kinds of intensity
Rm,xWith corresponding resilience standard value Rm,iIt is compared, if the equal coincidence formula of its value of delta：δ=| Rm,x-Rm,i|≤2, then it is described
The reisilometer of unknown state is that calibration is qualified.
Further, reference cement, normal sand and pure water are used described in step 1), using fixed match ratio mixing into
Standard fresh mortar, the standard fresh mortar is made using 150mm × 150mm × 150mm standard steel die trial and set up
Cube test specimen and conserved the step of by described in step (2)；Step (5) is described to be carried out respectively on the test specimen of varying strength
Standard testing, the resilience average value of the test specimen of various varying strengths is obtained, using the value as each varying strength reference block
Resilience standard value Rm,i。
Further, it is with the index of quality of reference cement described in step 1)：Portland clinker and dihydrate gypsum
The type portland cements of P. I for 42.5 strength grades that intergrinding forms；Tricalcium aluminate content in the Portland clinker
For 6%~8%, tricalcium silicate content is 55%~60%, and the calcium oxide content that dissociates in Portland clinker is no more than
1.2%, alkali content is no more than 1.0%, and cement specific surface area is 340~360m2/kg。
Further, the reisilometer assay approval used in step 4) and Rockwell hardness HRC be 60 ± 2 riveting stake on
Rate definite value be 80 ± 0.5.
Further, each measuring point is more than 30mm, each measuring point apart from the edge of the standard specimen described in step 4)
It is more than 20mm with the spacing of adjacent measuring point.
Further, the computational methods of average value include that 3 maximums and 3 will be removed in 16 rebound values in step 6)
The arithmetic average of 10 medians is taken after minimum value.
Compared with prior art, superior effect is：The present invention has carried out calibration to the middle zones values of reisilometer；To reisilometer
Integrality carry out calibration；Calibration is carried out on mortar specimen, is closer to the true detection case of concrete surface layer；Respectively
Detecting unit can be according to standard method self manufacture standard specimen.
Embodiment
The specific embodiment of the invention is described in further detail below.
The method that a kind of zones values in provided by the invention carry out overall calibration to reisilometer is illustrated, including it is following
Step：
Step 1) reference cement, normal sand and pure water, will using fixed match ratio mixing into standard fresh mortar
The standard fresh mortar is molded as standard specimen, the standard specimen symbol using 150mm × 150mm × 150mm standard steel
Close《Concrete test die》JG237-2008 requirements are fabricated to cube specimen, and indoor temperature during making remains 21~25 DEG C,
Form removal in 24 hours；
Step 1) the cube standard specimen is sent into standard curing room by step 2), and curing temperature is 18~22 DEG C, is supported
It is more than 95% to protect humidity, conserve within 14 days, then the standard specimen is sent into dry foster room and conserved, curing temperature 18
~22 DEG C, maintenance humidity 50% is standby after totally 28 days from conserving self-forming；
Step 3) repeatedly adjusts the match ratio of reference cement, normal sand and pure water, is fabricated to the standard examination of varying strength
Block several, every time adjust match ratio after make the change of rebound value 10 or so；
The standard specimen that maintenance 28 days is obtained in step 2) is placed on forcing press by step 4), and loading 40-100KN is permanent
Lotus pressure, the intensity of permanent lotus pressure establishing criteria test block change different pressures from small to large, with the reisilometer of standard state, in institute
State and carry out rebound test on two relative sides of standard specimen, 8 resilience measuring points are selected in each side, and 16 resiliences are obtained
Value, takes the average value of 10 medians as the resilience standard value R of the reference blockm；
In formula：Rm- resilience standard value；
Ri- i-th rebound value.
Step 5) carries out standard testing respectively on the test specimen of varying strength, obtains the resilience of the test specimen of various varying strengths
Average value, the resilience standard value R using the value as each varying strength reference blockm,i；
Step 6) carries out calibration to the reisilometer of unknown state：The reisilometer of unknown state is returned on standard specimen
Bullet is tested, and resilience method is identical by step 4) with computational methods, the resilience average value of the reisilometer is obtained, as the reisilometer
Rate definite value R in the reference blockm,x；
The reisilometer of unknown state is carried out calibration, rate definite value by step 7) in the standard specimen no less than two kinds of intensity
Rm,xWith corresponding resilience standard value Rm,iIt is compared, if the equal coincidence formula of its value of delta：δ=| Rm,x-Rm,i|≤2, then it is described
Reisilometer calibration is qualified.
Reference cement is the cement special for examining concrete admixture performance, is the silicate by meeting the following index of quality
The type portland cements of P. I for 42.5 strength grades that clinker forms with dihydrate gypsum intergrinding, reference cement is by warp
Concrete admixture branch of building materials federation of state confirms that the factory for possessing working condition supplies jointly with units concerned.The index of quality
In addition to 42.5 strength grade portland cement technical requirements are met, also meet tricalcium aluminate content 6%~8%, silicon in clinker
Sour three calcium contents 55%~60%, free calcium oxide content are no more than 1.2%, and alkali content is no more than 1.0%, and specific surface area is
340-360m2/kg.The reisilometer of standard state：The high-precision reisilometer of reisilometer producer customization, it is strict through examining and determine each part
Meet the reisilometer of standard requirement, and its rate definite value on the riveting stake that Rockwell hardness HRC is 60 ± 2 is 80 ± 0.5；Determining
When, each measuring point is more than 30mm apart from test block edge, and the spacing of each measuring point and adjacent measuring point is more than 20mm.The calculating of average value
Method reference《Concrete intensity with rebound method technical regulation》The computational methods of resilience average value in JGJ/T23-2011,
The arithmetic average that 10 medians are taken after 3 maximums and 3 minimum values will be removed in 16 rebound values.In this implementation,
In power of the test timing, the change of size, match ratio for changing die trial size, age, curing condition, the size being further applied load
It is adjusted correspondingly and changes with resiliometer impact energy variation.
The present invention is not limited to above-mentioned embodiment, in the case of without departing substantially from the substantive content of the present invention, this area skill
Any deformation, improvement, the replacement that art personnel are contemplated that each fall within protection scope of the present invention.
Claims (6)
1. a kind of method that zones values in carry out overall calibration to reisilometer, it is characterised in that methods described includes following step
Suddenly：
Step 1) reference cement, normal sand and pure water, using fixed match ratio mixing into standard fresh mortar, by described in
Standard specimen is made using standard steel die trial in standard fresh mortar, and indoor temperature during making remains 21~25 DEG C, and 24 is small
When form removal；
Step 1) the standard specimen is sent into standard curing room by step 2), and curing temperature is 18~22 DEG C, and maintenance humidity is
More than 95%, conserve within 14 days, then the standard specimen is sent into dry foster room and conserved, curing temperature is 18~22 DEG C,
Maintenance humidity is 50%, and self-forming conserves to standby after 28 days day；
Step 3) repeatedly adjusts the match ratio of reference cement, normal sand and pure water, if being fabricated to the standard specimen of varying strength
Dry, after adjusting match ratio every time, make the resilience value changes of standard specimen 10 or so；
The standard specimen that maintenance 28 days is obtained in step 2) is placed on forcing press by step 4), loads 40~100KN perseverance lotus pressure,
The intensity of the size establishing criteria test block of the permanent lotus pressure changes different pressures from small to large, with the reisilometer of standard state,
Rebound test is carried out on two relative sides of the standard specimen, 8 resilience measuring points are selected in each side, are obtained 16 and return
Bullet value；
Step 5) carries out standard testing respectively on the test specimen of varying strength, and the resilience for obtaining the test specimen of various varying strengths is averaged
Value, the resilience standard value R using the value as each varying strength reference blockm,i；
Step 6) carries out calibration to the reisilometer of unknown state：The reisilometer of unknown state is subjected to resilience survey on standard specimen
Examination, resilience method obtains 16 rebound values in the way of step 4), and the resilience that the reisilometer is further calculated is averaged
Value, as rate definite value R of the reisilometer in the reference blockm,x；
The reisilometer of unknown state is carried out calibration, rate definite value R by step 7) in the standard specimen no less than two kinds of intensitym,xWith
Corresponding resilience standard value Rm, i is compared, if the equal coincidence formula of its value of delta：δ=| Rm,x-Rm,i|≤2, then it is described unknown
The reisilometer of state is that calibration is qualified.
2. the method that the zones values according to claim 1 in carry out overall calibration to reisilometer, it is characterised in that step
1) reference cement, normal sand and pure water are used described in, using fixed match ratio mixing into standard fresh mortar, by the mark
Quasi- fresh mortar is fabricated to cube specimen and by institute in step 2) using 150mm × 150mm × 150mm standard steel die trial
The step of stating is conserved.
3. the method that the zones values according to claim 1 in carry out overall calibration to reisilometer, it is characterised in that step
1) it is with the index of quality of reference cement described in：42.5 intensity that Portland clinker forms with dihydrate gypsum intergrinding
The type portland cements of P. I of grade；Tricalcium aluminate content is 6%~8% in the Portland clinker, tricalcium silicate content
The calcium oxide content that dissociates for 55%~60%, in Portland clinker is no more than 1.2%, and alkali content is no more than 1.0%, cement
Specific surface area is 340~360m2/kg。
4. the method that the zones values according to claim 1 in carry out overall calibration to reisilometer, it is characterised in that step
4) reisilometer of the standard state used in is assay approval and the rate definite value on the riveting stake that Rockwell hardness HRC is 60 ± 2
For 80 ± 0.5.
5. the method that the zones values according to claim 1 in carry out overall calibration to reisilometer, it is characterised in that step
4) each measuring point described in is more than 30mm apart from the edge of the standard specimen, and the spacing of each measuring point and adjacent measuring point is more than
20mm。
6. the method that the zones values according to claim 1 in carry out overall calibration to reisilometer, it is characterised in that step
6) computational methods of average value include taking 10 medians after removing 3 maximums and 3 minimum values in 16 rebound values in
Arithmetic average.
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| CN112161888A (en) * | 2020-10-26 | 2021-01-01 | 广东华路交通科技有限公司 | Rebound testing device and method for calculating time for additionally laying asphalt layer on integrated layer of bridge deck |
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| CN102661904A (en) * | 2012-05-03 | 2012-09-12 | 浙江省计量科学研究院 | Calibrator for rebound value of resiliometer and testing method for rebound value of resiliometer |
| CN102818738A (en) * | 2012-09-04 | 2012-12-12 | 舟山市博远科技开发有限公司 | Rebound apparatus calibrating device and using method thereof |
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| CN203164073U (en) * | 2013-02-07 | 2013-08-28 | 舟山市博远科技开发有限公司 | General calibrating device for middle-light-type rebound instruments |
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2015
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| CN1696649A (en) * | 2005-05-17 | 2005-11-16 | 贵州中建建筑科研设计院 | Method for testing compressive strength of pit sand concrete in high strength grade through rebound tester without damage |
| CN101871870A (en) * | 2010-07-14 | 2010-10-27 | 天津市津维电子仪表有限公司 | Semi-automatic steel anvil rating device of resiliometer |
| CN102661904A (en) * | 2012-05-03 | 2012-09-12 | 浙江省计量科学研究院 | Calibrator for rebound value of resiliometer and testing method for rebound value of resiliometer |
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