CN103411831A - Intelligent detector for detecting compressive strength of concrete, and detection method thereof - Google Patents
Intelligent detector for detecting compressive strength of concrete, and detection method thereof Download PDFInfo
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- CN103411831A CN103411831A CN2013103035296A CN201310303529A CN103411831A CN 103411831 A CN103411831 A CN 103411831A CN 2013103035296 A CN2013103035296 A CN 2013103035296A CN 201310303529 A CN201310303529 A CN 201310303529A CN 103411831 A CN103411831 A CN 103411831A
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Abstract
The invention relates to the technical field of concrete detectors, and discloses an intelligent detector for detecting the compressive strength of concrete, and a detection method thereof. The detector comprises a pedestal, two support pillars, a pressure sensor, a data processing mechanism and a loading mechanism, and the support pillars are alternately arranged and are provided with test piece clamps; and the pressure sensor is positioned between the two support pillars, the upper end of the pressure sensor is covered with a horizontally-arranged connecting flat, the connecting flat is provided with a pressurizing branch, and the pressurizing branch is placed between the above two test piece clamps. The intelligent detector does not destroy concrete test pieces and reduces the influence factors on the concrete test pieces in the detection process when used for detecting the concrete test pieces, so the detection precision is improved, and the whole detection is simple and can be easily realized; and the detector has the advantages of simple structure, miniaturization, portability, suitableness for the onsite detection, realization of the automation in the detection process, avoiding of the influences of the detection precision by the factors of the personnel operation and the like, environmental protection and low cost.
Description
Technical field
The present invention relates to the technical field of concrete NDT instrument, relate in particular to concrete crushing strength intelligent detecting instrument and detection method thereof.
Background technology
Concrete is as the main composition body of current building, and its performance directly affects the safety of building, and its compressive strength is the performance parameter of its outbalance.
In prior art, comprise following several to the detection method of concrete crushing strength:
1, traditional experiment machine method, the method adopts the concrete standard spare that universal testing machine or pressure testing machine are 150mm to the length of side to carry out compression test, thereby obtain limit failing load, again according to the compression area of the solid standard component of limit failing load and coagulation, calculate, obtain concrete compressive strength; The defect that the method exists is: the building waste that testing process produces is many, not environmental protection; Instrument and equipment is huge, can not carry at scene, and the loading speed in the examined process of accuracy of detection and personnel such as operate at the various factors impact;
2, rebound method, the method passes through to determine the hardness of concrete surface, and then infers concrete compressive strength; The defect that the method exists is: accuracy of detection is lower;
3, core drilling method, drill through concrete sample in structure or member, and sample is processed as to identical concrete standard spare on the traditional experiment machine, and then obtain concrete crushing strength by compression test; The defect that the method exists is: operating process is loaded down with trivial details, and concrete component or xoncrete structure are caused to larger damage, and, in the process that fabrication of concrete is tested, has more influence factor;
4, Ultrasonic Resilience Comprehensive Method in Construction, the method pass through to measure hardness at concrete surface, and comprehensively infer concrete compressive strength by the velocity of wave of internal ultrasonic ripple; The defect that the method exists is: accuracy of detection is comparatively single, and operating process is loaded down with trivial details, need to carry out the wave velocity measurement of internal ultrasonic ripple, limited by field environmental condition;
5, rear anchoring method, the method, by the scope of concrete surface layer 30mm, are transferred to the destruction body that is embedded in the rear anchoring method in concrete, measure dial-out power, and then infer concrete compressive strength; The defect that the method exists is: destroy body to xoncrete structure or concrete component injury, and in testing process, its stress complexity, more to the influence factor of testing result;
6, cut platen press, by shearing press instrument, the right-angle side of concrete component is applied to the shearing pressure perpendicular to the pressure-bearing surface of concrete component, and then infer concrete compressive strength; The defect that the method exists is: in testing process, to the concrete component injury, and be subjected to the condition restriction such as thickness of shape, detection position, sensing range and the concrete component of concrete component, and complex operation, accuracy of detection is lower.
In sum, in prior art for detection of the method for concrete crushing strength exist on concrete component damage, complex operation, the time is long, equipment is large so that be not easy to carry, carry at the scene of being not easy to, testing process stress complicated and the personnel operation factors of being subjected to affects so that accuracy of detection is low and the problem of not environmental protection.
Summary of the invention
The object of the present invention is to provide the concrete crushing strength intelligent detecting instrument, the detection method that is intended to solve concrete crushing strength of the prior art exist on concrete component damage, complex operation, the time is long, equipment is large so that be not easy to carry, carry at the scene of being not easy to, testing process stress complicated and the personnel operation factors of being subjected to affects so that accuracy of detection is low and the problem of not environmental protection.
The present invention realizes like this, the concrete crushing strength intelligent detecting instrument, for rectangular shape or annular concrete sample are carried out to the compressive strength detection, comprise base, two support columns, pressure transducer, input the DPA data processing activity of data wherein and drive the load maintainer that described pressure transducer moves up and down with respect to described base for the treatment of described pressure transducer, the alternate layout of two described support columns, and be vertical and be located on described base, each described support column is provided with the test specimen folder; Described pressure transducer is electrically connected at described DPA data processing activity, and be connected in described load maintainer, be positioned at the centre position of two described support columns, and be positioned at the below of described test specimen folder, the upper end of described pressure transducer is coated with the connection flat board that is horizontal positioned, on described connection flat board, convex with the pressurization lattice framing, described pressurization lattice framing is placed in the centre position of two described test specimen folders.
The present invention also provides the detection method of above-mentioned concrete crushing strength intelligent detecting instrument, comprises the following steps:
1), concrete sample is placed between two described test specimens folders, determine concrete sample by described test specimen is clamping, make the dull and stereotyped and pressurization lattice framing of connection on described pressure transducer be connected to the centre position that coagulation is consolidated test specimen;
2), start-up loading mechanism, described pressure transducer is moved upward, give the centre position of the concrete sample load of exerting pressure;
3), by described load maintainer successively the intensified pressure sensor be applied to the pressure load in concrete sample centre position, until concrete sample is destroyed, obtain the concrete sample load limit value F of destroyed moment, by described DPA data processing activity, determine the compressive strength of this concrete sample;
4), the above-mentioned step 1), 2 of repetitive operation) and 3), until determine the compressive strength of a plurality of concrete samples, and, by described DPA data processing activity, obtain the mean compressive strength of a plurality of concrete samples.
Compared with prior art, intelligent detecting instrument provided by the invention, for concrete sample is detected, can not damage concrete component, and in the minimizing testing process to the influence factor of concrete sample, thereby the raising accuracy of detection, and whole testing process is simple, more easily realizes; It is simple in structure, and miniaturization is easy to carry, and is applicable to Site Detection, and its testing process realizes robotization, avoids the factors such as personnel operate to affect accuracy of detection, and comparatively environmental protection, and cost is low; The detection scope in the length of time of the concrete sample that this detector detects is wide, the concrete sample of all energy moulding, can carry out the compressive strength detection, the earliest can be to 1d, can be the stretch-draw of prestressed concrete and put and the early construction in the length of time of concrete provides technical guarantee; Applicable to the detection of the concrete crushing strength of the Structural Engineering in C10～C100 different length of times, be widely used in building, the detection of the concrete structural solid compressive strength of the industries such as railway, traffic, water transport, harbor work.
The accompanying drawing explanation
Fig. 1 is that the master of concrete crushing strength intelligent detecting instrument provided by the invention looks schematic diagram;
Fig. 2 is the schematic top plan view of concrete crushing strength intelligent detecting instrument provided by the invention;
Fig. 3 is that schematic diagram is looked on the left side of concrete crushing strength intelligent detecting instrument provided by the invention;
Fig. 4 is the enlarged diagram at the A place in Fig. 3.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with specific embodiment, realization of the present invention is described in detail.
As shown in Fig. 1～4, be a preferred embodiment provided by the invention.
The intelligent detecting instrument 1 that the present embodiment provides, for being carried out to compressive strength, concrete sample detects, concrete sample is rectangular-shaped or annular shape, if cylindric etc., and the diameter range of concrete sample is 30mm～50mm, and its length is not less than 60mm and can, certainly, according to the actual requirements, the diameter of concrete sample and length also can be set to other data, are not limited to the numerical value in the present embodiment.
Intelligent detecting instrument 1 comprises base 11, two support columns 14, DPA data processing activity (not indicating in figure) and load maintainer 12, base 11 is as the brace foundation of whole intelligent detecting instrument 1, in the present embodiment, base 11 comprises feet and is connected to the back up pad on feet, back up pad is the flat board that is horizontal positioned, like this, can guarantee that other structure on it keeps horizontality, certainly, the planform of base 11 can be diversified, it is not limited to the shape in the present embodiment, as long as can play support effect and can; Two support columns 14 are vertical and are arranged on base 11, and alternate layout, namely have spacing between the two, on each support column 14, be provided with test specimen folder 15, like this, two test specimen folders 15 arrange in opposite directions, can be used to clamping concrete sample between the two, so that it keeps stationary state; DPA data processing activity and load maintainer 12 are separately positioned on base 11, and DPA data processing activity can be the electronic component that can embed programming, carry out the requirement processing for the data to entering in it, and output processing structure, for example, can be single-chip microcomputers etc.
On base 11, also be provided with pressure transducer 16, this pressure transducer 16 is connected on load maintainer 12, by load maintainer 12, drive and move up and down, pressure transducer 16 is positioned at the below in the centre position of two test specimen folders 15, namely be positioned at the centre position of two support columns 14, and linearly arrange with two support columns 14, on it, be coated with and connect dull and stereotyped 17, in this connection dull and stereotyped 17, convex with pressurization lattice framing 18, this pressurization lattice framing 18 is positioned at the centre position of two support columns 14 just.Like this, under the driving of loading system, pressure transducer 16 with and on connection flat board 17, the pressurization lattice framing 18 can on base 11, move up and down;
Above-mentioned intelligent detecting instrument 1, its operation steps is specific as follows:
1), concrete sample is placed between two test specimens folder 15, and by test specimen, press from both sides 15 and clamp concrete sample, to be position, fix, and make connection dull and stereotyped 17 and pressurization lattice framing 18 on pressure transducer 16 be connected to the centre position that coagulation is consolidated test specimen;
2), start-up loading mechanism 12, make pressure transducer 16 move upward, thereby give the centre position of the concrete sample load of exerting pressure;
3), by load maintainer 12 successively intensified pressure sensor 16 be applied to the pressure load in concrete sample centre position, until concrete sample is destroyed, thereby obtain the concrete sample load limit value F of destroyed moment, by the strong formula of the survey of Different function forms in DPA data processing activity, can directly be converted into the compressive strength of corresponding with it concrete sample, thereby determine the compressive strength of this concrete sample;
4), the above-mentioned step 1), 2 of repetitive operation) and 3), until determine the compressive strength of a plurality of concrete samples, and by DPA data processing activity, obtain the mean compressive strength of a plurality of concrete samples, thereby obtain a plurality of concrete samples compressive strength represent numerical value.
The intelligent detecting instrument 1 that the present embodiment provides has following beneficial effect:
1), it is for to the concrete sample direct-detection, obtains its compressive strength, can not damage concrete component, and reduce in testing process the influence factor to concrete sample, thereby improve accuracy of detection, and whole testing process is simple, more easily realizes;
2), the detection scope in the length of time of its concrete sample detected is wide, all concrete samples that can moulding, can carry out the compressive strength detection, the earliest can be to 1d, can be the stretch-draw of prestressed concrete and put and the construction in concrete length of time morning provides technical guarantee; Detection applicable to the concrete crushing strength of the Structural Engineering in C10～C100 different length of times;
3), this intelligent detecting instrument 1 is simple in structure, miniaturization, be easy to carry, and be applicable to Site Detection, its testing process realizes robotization, avoids the factors such as personnel operate to affect accuracy of detection, and comparatively environmental protection, cost is low;
4), be widely used in building, the detection of the concrete structural solid compressive strength of the industry such as railway, traffic, water transport, harbor work
On above-mentioned connection flat board 17, also be provided with latch, this latch is positioned at and connects dull and stereotyped 17 centre position, like this, and after concrete sample fixes position, by latch, be plugged in the centre position of concrete sample, connection dull and stereotyped 17 and pressurization lattice framing 18 are connected on concrete sample.
By pressurization lattice framing 18 is set in connection dull and stereotyped 17, like this, by pressurization lattice framing 18, be pressed on the centre position of concrete sample, because pressurization lattice framing 18 is less with the interaction area of concrete sample, at load maintainer 12, successively strengthen load, until, in the destroyed process of concrete sample, can greatly reduce the apply power of load maintainer 12 in the imposed load process.
In the present embodiment, test specimen folder 15 is movably connected on support column 14, it is connected on support column 14 by guide rail structure 100, and guide rail structure 100 extends along the line direction of two support columns 14, thereby by mobile two test specimen folders 15, can shorten or increase spacing between the two, so that two test specimen folders 15 can be used to clamping the concrete sample of different length size.
Particularly, in the upper surface of support column 14, rail groove is set, this rail groove extends and arranges along the line direction of two support columns 14, accordingly, the lower end of test specimen folder 15 convexes with guide rail, and this guide rail embeds in-orbit in groove, thereby realizes the flexible connection between test specimen folder 15 and support column 14.
Certainly, the rail groove also can be arranged on the lower end of test specimen folder 15, thereby guide rail is arranged on the upper end of support column 14, thereby also can realize the flexible connection between test specimen folder 15 and support column 14.In the present embodiment, the rail groove is dovetail groove, and certainly, it can be also the groove of other various shape, is not limited to the version in the present embodiment.
In the present embodiment, in test specimen folder 15, be provided with the through hole 151 that runs through its two side ends, the center line of this through hole 151 extends and arranges along the line direction of two test specimen folders 15, thereby, when test specimen folder 15 fixing concrete test specimen, the two ends of concrete sample can be placed in its through hole 151, thereby are convenient to the fixing of concrete sample.
The above-mentioned pressurization lattice framing 18 connected on dull and stereotyped 17 that is arranged on, its axis be perpendicular to the axis of concrete sample, and both are and are arranged vertically, and namely, perpendicular to the line of two test specimens folders 15, can greatly improve accuracy of detection.
For ease of the data transmission, above-mentioned DPA data processing activity also is provided with the data connector, certainly, this data connector can be diversified, as the USB mouth, and the mouth etc. of getting lines crossed, like this, be convenient to the data output in DPA data processing activity, also be convenient to input required program or data in it.
In the present embodiment, on base 11, also be provided with display screen 10 and operating key 19, display screen 10 and operating key 19 typical case respectively are connected in DPA data processing activity, be respectively used to show the output data of DPA data processing activity, be convenient to the numerical value that the user watches the compressive strength of concrete sample, and by operating key 19, can be to the operation of data processing mechanism, so that its requirement according to the user operates.
Particularly, gear train can be gear mechanism etc., or connecting link etc.
For the ease of the user, to the concrete sample loaded load, on above-mentioned gear train, be connected with rocking bar 13, the user, by shaking rocking bar 13, can operate gear train, thereby realizes that 16 pairs of concrete samples of pressure transducer carry out imposed load.Rocking bar 13 is arranged in outside a side of base 11, like this, is convenient to the user and operates rocking bar 13.
Perhaps, as other embodiment, load maintainer 12 can be hydraulic cylinder, and above-mentioned pressure transducer 16 is connected on the expansion link of hydraulic cylinder, and certainly, its expansion link is vertical layout.
Certainly, in order to realize full-automatic operation, above-mentioned load maintainer 12 also can be automatic loading structure, when needs carry out imposed load to concrete sample, it can pass through control element, controls its automatic operation pressure transducer 16 and moves up and down, until concrete sample is destroyed.
In the present embodiment, integrated in order to make detector 1 realize, it is for the protected data processing mechanism, and DPA data processing activity is encapsulated in housing, and this housing is connected on base 11; The lower end of base 11 is provided with grooved rail, so both can reduce the weight of base 11, and is convenient to being connected of base 11 and external unit; Perhaps base 11 lower ends also are provided with a plurality of web members, as bolt, screw etc., like this, utilize these web members, also are convenient to the fixing of base 11, or with being connected of external unit.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. concrete crushing strength intelligent detecting instrument, for rectangular shape or annular concrete sample are carried out to the compressive strength detection, it is characterized in that, comprise base, two support columns, pressure transducer, input the DPA data processing activity of data wherein and drive the load maintainer that described pressure transducer moves up and down with respect to described base for the treatment of described pressure transducer, the alternate layout of two described support columns, and be vertical and be located on described base, each described support column is provided with the test specimen folder; Described pressure transducer is electrically connected at described DPA data processing activity, and be connected in described load maintainer, be positioned at the centre position of two described support columns, and be positioned at the below of described test specimen folder, the upper end of described pressure transducer is coated with the connection flat board that is horizontal positioned, on described connection flat board, convex with the pressurization lattice framing, described pressurization lattice framing is placed in the centre position of two described test specimen folders.
2. concrete crushing strength intelligent detecting instrument as claimed in claim 1, is characterized in that, described pressurization lattice framing is the vertical bar shape, and its axis is perpendicular to the line direction of two described test specimen folders to be arranged.
3. concrete crushing strength intelligent detecting instrument as claimed in claim 1, is characterized in that, the lower end of described test specimen folder and the upper end of described support column are flexibly connected by guide rail structure, and the direction of described guide rail structure is arranged along the line direction of two described support columns.
4. concrete crushing strength intelligent detecting instrument as claimed in claim 1, is characterized in that, on described connection flat board, convexes be used to inserting the latch of concrete sample, and described latch is vertical layout, and be positioned at the dull and stereotyped centre position of described connection.
5. concrete crushing strength intelligent detecting instrument as claimed in claim 1, it is characterized in that, in described test specimen folder, be provided with the through hole plugged for concrete sample, described through hole runs through the two side ends of described test specimen folder, and its center line is arranged along the line direction of two described test specimen folders.
6. concrete crushing strength intelligent detecting instrument as claimed in claim 1, it is characterized in that, on described base, also be provided be used to showing that described DPA data processing activity is exported the display screen of data and be used to controlling the operating key of described DPA data processing activity, described display screen and described operating key are electrically connected at respectively described DPA data processing activity.
7. concrete crushing strength intelligent detecting instrument as described as claim 1 to 6 any one, it is characterized in that, described load maintainer comprises gear train and the mobile terminal moved up and down with respect to described base by described drive mechanism driving, and described pressure transducer is connected in described mobile terminal.
8. concrete crushing strength intelligent detecting instrument as described as claim 1 to 6 any one, is characterized in that, described load maintainer is hydraulic cylinder, and described pressure transducer is connected in the expansion link of described hydraulic cylinder, and described expansion link is vertical layout.
9. the detection method of concrete crushing strength intelligent detecting instrument as described as claim 1～8 any one, is characterized in that, comprises the following steps:
1), concrete sample is placed between two described test specimens folders, determine concrete sample by described test specimen is clamping, make the dull and stereotyped and pressurization lattice framing of connection on described pressure transducer be connected to the centre position that coagulation is consolidated test specimen;
2), start-up loading mechanism, described pressure transducer is moved upward, give the centre position of the concrete sample load of exerting pressure;
3), by described load maintainer successively the intensified pressure sensor be applied to the pressure load in concrete sample centre position, until concrete sample is destroyed, obtain the concrete sample load limit value F of destroyed moment, by described DPA data processing activity, determine the compressive strength of this concrete sample;
4), the above-mentioned step 1), 2 of repetitive operation) and 3), until determine the compressive strength of a plurality of concrete samples, and, by described DPA data processing activity, obtain the mean compressive strength of a plurality of concrete samples.
10. the detection method of concrete crushing strength intelligent detecting instrument as claimed in claim 9, it is characterized in that, on described connection flat board, convex with latch, described latch is vertical layout, in described step 1), when the connection flat board on described pressure transducer and pressurization lattice framing were connected to the centre position of the solid test specimen of coagulation, described latch was inserted in the centre position of described concrete sample.
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| CN104266905A (en) * | 2014-10-11 | 2015-01-07 | 江苏交科工程检测技术有限公司 | Concrete compression strength detection device |
| CN107782607A (en) * | 2016-08-25 | 2018-03-09 | 天津王朝包装印刷制品有限公司 | A kind of Packaging Box determiner for compression strength and its method of testing |
| CN109100213A (en) * | 2018-09-17 | 2018-12-28 | 广东华坤建设集团有限公司 | A kind of concrete strength inspection device of assembled stair |
| CN110631904A (en) * | 2019-08-06 | 2019-12-31 | 深圳市市政工程总公司 | Water stability testing method for building waste mixture with stable inorganic binder |
| CN110926948A (en) * | 2019-12-18 | 2020-03-27 | 衡水积土科技有限公司 | Concrete compressive strength intelligent detector |
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| CN103411831B (en) | 2015-07-15 |
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