CN103411831B - 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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- CN103411831B CN103411831B CN201310303529.6A CN201310303529A CN103411831B CN 103411831 B CN103411831 B CN 103411831B CN 201310303529 A CN201310303529 A CN 201310303529A CN 103411831 B CN103411831 B CN 103411831B
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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, particularly relate 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 then the performance parameter of its outbalance.
In prior art, the detection method of concrete crushing strength is comprised several as follows:
1, traditional experiment machine method, the method adopts universal testing machine or pressure testing machine to carry out compression test to the concrete standard part that the length of side is 150mm, thus obtain limiting damage load, the compression area of standard component is consolidated again according to limiting damage 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 environmentally; Instrument and equipment is huge, can not carry at scene, the various factors impacts such as the loading speed in the examined process of accuracy of detection and human users;
2, rebound method, the method by determining the hardness of concrete surface, and then estimates concrete compressive strength; The defect that the method exists is: accuracy of detection is lower;
3, core drilling method, drills through concrete sample in structure or component, and sample is processed as concrete standard part identical on traditional experiment machine, and then obtains concrete crushing strength by compression test; The defect that the method exists is: operating process is loaded down with trivial details, and causes larger damage to concrete component or xoncrete structure, and carries out, in the process tested, there is more influence factor at fabrication of concrete;
4, Ultrasonic Resilience Comprehensive Method in Construction, the method by measuring hardness at concrete surface, and comprehensively estimates 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, needs the wave velocity measurement carrying out internal ultrasonic ripple, limits by field environmental condition;
5, rear anchoring method, the destruction body of the rear anchoring method be embedded in concrete, by the scope of concrete surface layer 30mm, is transferred to, is measured dial-out power, and then estimate concrete compressive strength by the method; The defect that the method exists is: destroy body and cause damage to xoncrete structure or concrete component, and in testing process, its stress is complicated, more to the influence factor of testing result;
6, cut platen press, by shearing press instrument to the shearing pressure of the right-angle side applying of concrete component perpendicular to the pressure-bearing surface of concrete component, and then estimate concrete compressive strength; The defect that the method exists is: in testing process, cause damage to concrete component, and limits by the condition such as thickness of the shape of concrete component, detection position, sensing range and concrete component, and complex operation, accuracy of detection is lower.
In sum, the method for detecting concrete crushing strength in prior art exist concrete component is damaged, complex operation, the time is long, equipment is comparatively large so that be not easy to carry, the scene of being not easy to is carried, testing process stress complicated and affect the lower and problem not environmentally of consequently accuracy of detection by human users's factor.
Summary of the invention
The object of the present invention is to provide concrete crushing strength intelligent detecting instrument, the detection method being intended to solve concrete crushing strength of the prior art exist concrete component is damaged, complex operation, the time is long, equipment is comparatively large so that be not easy to carry, the scene of being not easy to is carried, testing process stress complicated and affect the lower and problem not environmentally of consequently accuracy of detection by human users's factor.
The present invention realizes like this, concrete crushing strength intelligent detecting instrument, for carrying out compressive strength detection to rectangular shape or annular concrete sample, comprise base, two support columns, pressure transducer, for the treatment of the DPA data processing activity of described pressure transducer input data wherein and the load maintainer that drives described pressure transducer to move up and down relative to described base, the alternate layout of support column described in two, and be located on described base in vertical, each described support column is provided with test specimen folder; Described pressure transducer is electrically connected at described DPA data processing activity, and be connected to described load maintainer, be positioned at the centre position of support column described in two, and be positioned at the below of described test specimen folder, the connection that the upper end of described pressure transducer is coated with in horizontal positioned is dull and stereotyped, described connection flat board is convexly equipped with pressurization lattice framing, and described pressurization lattice framing is placed in the centre position of test specimen folder described in two.
Present invention also offers the detection method of above-mentioned concrete crushing strength intelligent detecting instrument, comprise the following steps:
1), by concrete sample to be placed on described in two between test specimen folder, determine concrete sample by described test specimen is clamping, make the dull and stereotyped and pressurization lattice framing of the connection on described pressure transducer be connected to the centre position that coagulation consolidates test specimen;
2), start-up loading mechanism, described pressure transducer is moved upward, to the centre position of concrete sample apply pressure load;
3), by described load maintainer successively intensified pressure sensor be applied to the pressure load in concrete sample centre position, until concrete sample is destroyed, obtain the load limit value F that concrete sample is destroyed moment, determined the compressive strength of this concrete sample by described DPA data processing activity;
4), the above-mentioned step 1), 2 of repetitive operation) and 3), until determine the compressive strength of multiple concrete sample, and by described DPA data processing activity, obtain the mean compressive strength of multiple concrete sample.
Compared with prior art, intelligent detecting instrument provided by the invention is used for detecting concrete sample, can not damage concrete component, and to the influence factor of concrete sample in minimizing testing process, thus raising accuracy of detection, and whole testing process is simple, more easily realizes; Its structure is simple, and miniaturization, is easy to carry, and is applicable to Site Detection, and its testing process realizes robotization, avoids the factors such as human users to affect accuracy of detection, and comparatively environmental protection, cost is low; The detection scope in the length of time of the concrete sample that this detector detects is wide, the concrete sample that all energy are shaping, can compressive strength detection be carried out, the earliest can to 1d, can be the stretch-draw of prestressed concrete and to put and the construction in concrete early length of time provides technical guarantee; Be applicable to the detection of the concrete crushing strength of the Structural Engineering of C10 ~ C100 different larval instar, be widely used in the detection of the concrete structural solid compressive strength of the industries such as building, railway, traffic, water transport, harbor work.
Accompanying drawing explanation
Fig. 1 is the schematic front view of concrete crushing strength intelligent detecting instrument provided by the invention;
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 a left side for 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 object of the present invention, technical scheme and advantage clearly understand, 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, be 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 figures 1-4, be a preferred embodiment provided by the invention.
The intelligent detecting instrument 1 that the present embodiment provides, detect for carrying out compressive strength to concrete sample, concrete sample is rectangular-shaped or ring-shaped, as cylindric etc., and the diameter range of concrete sample is 30mm ~ 50mm, and its length is not less than 60mm and then 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 column 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 in horizontal positioned, like this, can ensure that other structure on it keeps horizontality, certainly, the planform of base 11 can be diversified, be not limited to the shape in the present embodiment, then can as long as it can play support effect; In vertical setting on the pedestal 11, and alternate layout, namely has spacing between the two to two support columns 14, each support column 14 is provided with test specimen folder 15, and like this, two test specimen folders 15 are arranged in opposite directions, may be used for the concrete sample clamped between the two, keep stationary state to make it; 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, for carrying out requirement process to the data entered in it, and output processing structure, such as, can be single-chip microcomputer etc.
Also be provided with pressure transducer 16 on the pedestal 11, this pressure transducer 16 is connected on load maintainer 12, driven by load maintainer 12 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, it is coated with and connects dull and stereotyped 17, this connection flat board 17 is convexly equipped with pressurization lattice framing 18, and 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 and the connection flat board 17 on it, the lattice framing 18 that pressurizes can move up and down on the pedestal 11;
Pressure transducer 16 is electrically connected at DPA data processing activity, and like this, its pressure value produced can be input in DPA data processing activity and process, and the corresponding numerical value exporting requirement.
Above-mentioned intelligent detecting instrument 1, its operation steps is specific as follows:
1), by concrete sample be placed between two test specimen folders 15, and clamp concrete sample by test specimen folder 15, fix to be position, and make the connection on pressure transducer 16 dull and stereotyped 17 and pressurization lattice framing 18 be connected to the centre position of the solid test specimen of coagulation;
2), start-up loading mechanism 12, pressure transducer 16 is moved upward, thus give concrete sample centre position apply pressure load;
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, thus obtain the load limit value F that concrete sample is destroyed moment, by the strong formula of the survey of Different function forms in DPA data processing activity, directly can be converted into the compressive strength of concrete sample corresponding with it, thus determine the compressive strength of this concrete sample;
4) step 1), 2 that, repetitive operation is above-mentioned) and 3), until determine the compressive strength of multiple concrete sample, and by DPA data processing activity, obtain the mean compressive strength of multiple concrete sample, thus obtain the representative numerical value of the compressive strength of multiple concrete sample.
The intelligent detecting instrument 1 that the present embodiment provides has following beneficial effect:
1), its for concrete sample direct-detection, obtains its compressive strength, can not damage concrete component, and reduce the influence factor to concrete sample in testing process, thus 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, and the concrete sample that all energy are shaping, can carry out compressive strength detection, the earliest can to 1d, can be the stretch-draw of prestressed concrete and to put and the construction in concrete length of time morning provides technical guarantee; Be applicable to the detection of the concrete crushing strength of the Structural Engineering of C10 ~ C100 different larval instar;
3), this intelligent detecting instrument 1 structure is simple, and miniaturization, is easy to carry, and is applicable to Site Detection, and its testing process realizes robotization, avoids the factors such as human users to affect accuracy of detection, and comparatively environmental protection, cost is low;
4) detection of the concrete structural solid compressive strength of the industries such as building, railway, traffic, water transport, harbor work, is widely used in
Above-mentioned connection flat board 17 is also provided with latch, this latch is positioned at the centre position connecting dull and stereotyped 17, like this, after concrete sample fixes position, be plugged in the centre position of concrete sample by latch, connection dull and stereotyped 17 and pressurization lattice framing 18 can be made to be connected on concrete sample.
By arranging pressurization lattice framing 18 in connection dull and stereotyped 17, like this, the centre position of concrete sample is pressed on by pressurization lattice framing 18, because pressurization lattice framing 18 is less with the interaction area of concrete sample, at load maintainer 12 successively Increased Load, until in the destroyed process of concrete sample, the applying power of load maintainer 12 in imposed load process can be greatly reduced.
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, thus by mobile two test specimen folders 15, can shorten or increase spacing between the two, with the concrete sample making two test specimen folders 15 may be used for clamping different length size.
Particularly, arrange rail groove in the upper surface of support column 14, this rail groove extends layout along the line direction of two support columns 14, accordingly, the lower end of test specimen folder 15 is convexly equipped with guide rail, and this guide rail embeds in-orbit in groove, thus realizes test specimen folder 15 and being flexibly connected between support column 14.
Certainly, rail groove also can be arranged on the lower end of test specimen folder 15, thus guide rail is arranged on the upper end of support column 14, thus also can realize test specimen folder 15 and being flexibly connected between support column 14.In the present embodiment, rail groove is dovetail groove, and certainly, it also can be the groove of other various shape, is not limited to the version in the present embodiment.
In the present embodiment, the through hole 151 running through its two side ends is provided with in test specimen folder 15, the center line of this through hole 151 is arranged along the line direction extension of two test specimen folders 15, thus, when test specimen presss from both sides 15 fixing concrete test specimen, the two ends of concrete sample can be placed in its through hole 151, thus are convenient to the fixing of concrete sample.
The above-mentioned pressurization lattice framing 18 be arranged in connection dull and stereotyped 17, its axes normal is in the axis of concrete sample, and both are in being arranged vertically, and namely perpendicular to the line of two test specimens folders 15, greatly can improve accuracy of detection.
For ease of data transmission, above-mentioned DPA data processing activity is also provided with data cube computation mouth, certainly, this data cube computation mouth can be diversified, as USB port, and mouth etc. of getting lines crossed, like this, the data be convenient in DPA data processing activity export, and are also convenient to input required program or data in it.
In the present embodiment, also be provided with display screen 10 and operating key 19 on the pedestal 11, display screen 10 and operating key 19 respectively typical case are connected to DPA data processing activity, be respectively used to the output data showing DPA data processing activity, be convenient to the numerical value that user watches the compressive strength of concrete sample, and by operating key 19, can operate DPA data processing activity, operate according to the requirement of user to make it.
Load maintainer 12 in the present embodiment comprises mobile terminal and gear train, and mobile terminal is connected on gear train, thus utilizes the driving of drive mechanism, and mobile terminal is moved up and down, and above-mentioned pressure transducer 16 is connected on mobile terminal.
Particularly, gear train can be gear mechanism etc., or connecting link etc.
For the ease of user to concrete sample loaded load, above-mentioned gear train is connected with rocking bar 13, user, by shake rocking bar 13, can operate gear train, thus realize pressure transducer 16 pairs of concrete samples and carry out imposed load.Rocking bar 13 is arranged in outside the side of base 11, like this, is convenient to user operation rocking bar 13.
Or 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, 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, in order to make detector 1 realize integration, it is in order to protected data processing mechanism, and in the housing, this housing connects on the pedestal 11 in DPA data processing activity encapsulation; The lower end of base 11 is provided with grooved rail, so both can reduce the weight of base 11, and is convenient to the connection of base 11 and external unit; Or base 11 lower end is also provided with multiple web member, as bolt, screw etc., like this, utilize these web members, be also convenient to the fixing of base 11, or with the connection of external unit.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. concrete crushing strength intelligent detecting instrument, for carrying out compressive strength detection to rectangular shape or annular concrete sample, it is characterized in that, comprise base, two support columns, pressure transducer, for the treatment of the DPA data processing activity of described pressure transducer input data wherein and the load maintainer that drives described pressure transducer to move up and down relative to described base, the alternate layout of support column described in two, and be located on described base in vertical, each described support column is provided with test specimen folder; Described pressure transducer is electrically connected at described DPA data processing activity, and be connected to described load maintainer, be positioned at the centre position of support column described in two, and be positioned at the below of described test specimen folder, the connection that the upper end of described pressure transducer is coated with in horizontal positioned is dull and stereotyped, described connection flat board is convexly equipped with pressurization lattice framing, and described pressurization lattice framing is placed in the centre position of test specimen folder described in two; Described load maintainer comprises gear train and is driven the mobile terminal moved up and down relative to described base by described gear train, and described pressure transducer is connected to described mobile terminal; Described gear train is connected with the rocking bar of this gear train of operation.
2. concrete crushing strength intelligent detecting instrument as claimed in claim 1, it is characterized in that, described pressurization lattice framing is vertical bar shape, and its axis is arranged in perpendicular to the line direction of test specimen folder described in two.
3. concrete crushing strength intelligent detecting instrument as claimed in claim 1, is characterized in that, the lower end of described test specimen folder is flexibly connected by guide rail structure with the upper end of described support column, and the direction of described guide rail structure is arranged along the line direction of support column described in two.
4. concrete crushing strength intelligent detecting instrument as claimed in claim 1, it is characterized in that, described connection flat board is convexly equipped with the latch for inserting concrete sample, described latch is vertical layout, and is positioned at the described centre position connecting flat board.
5. concrete crushing strength intelligent detecting instrument as claimed in claim 1, it is characterized in that, be provided with the through hole plugged for concrete sample in described test specimen folder, 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 test specimen folder described in two.
6. concrete crushing strength intelligent detecting instrument as claimed in claim 1, it is characterized in that, described base is also provided with and exports the display screen of data and the operating key for controlling described DPA data processing activity for showing described DPA data processing activity, described display screen and described operating key are electrically connected at described DPA data processing activity respectively.
7. the concrete crushing strength intelligent detecting instrument as described in any one of claim 1 to 6, is characterized in that, described load maintainer is hydraulic cylinder, and described pressure transducer is connected to the expansion link of described hydraulic cylinder, and described expansion link is vertical layout.
8. the detection method of the concrete crushing strength intelligent detecting instrument as described in any one of claim 1-7, is characterized in that, comprise the following steps:
1), by concrete sample to be placed on described in two between test specimen folder, determine concrete sample by described test specimen is clamping, make the dull and stereotyped and pressurization lattice framing of the connection on described pressure transducer be connected to the centre position that coagulation consolidates test specimen;
2), start-up loading mechanism, described pressure transducer is moved upward, to the centre position of concrete sample apply pressure load;
3), by described load maintainer successively intensified pressure sensor be applied to the pressure load in concrete sample centre position, until concrete sample is destroyed, obtain the load limit value F that concrete sample is destroyed moment, determined the compressive strength of this concrete sample by described DPA data processing activity;
4), the above-mentioned step 1 of repetitive operation), 2) and 3), until determine the compressive strength of multiple concrete sample, and by described DPA data processing activity, obtain the mean compressive strength of multiple concrete sample.
9. the detection method of concrete crushing strength intelligent detecting instrument as claimed in claim 8, it is characterized in that, described connection flat board is convexly equipped with latch, described latch is vertical layout, in described step 1) in, when connection on described pressure transducer is dull and stereotyped and pressurization lattice framing is connected to the centre position of coagulation solid test specimen, described latch is inserted in the centre position of described concrete sample.
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| CN201310303529.6A CN103411831B (en) | 2013-07-18 | 2013-07-18 | Intelligent detector for detecting compressive strength of concrete, and detection method thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104266905B (en) * | 2014-10-11 | 2016-10-05 | 江苏省交通科学研究院有限公司 | A kind of concrete compressive strength detecting 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 |
| CN109100213B (en) * | 2018-09-17 | 2020-12-04 | 广东华坤建设集团有限公司 | Concrete strength detection device of assembled stair |
| CN110631904B (en) * | 2019-08-06 | 2022-06-03 | 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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