CN114878384B - Concrete strength testing device and method - Google Patents
Concrete strength testing device and method Download PDFInfo
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- CN114878384B CN114878384B CN202210801190.1A CN202210801190A CN114878384B CN 114878384 B CN114878384 B CN 114878384B CN 202210801190 A CN202210801190 A CN 202210801190A CN 114878384 B CN114878384 B CN 114878384B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/52—Investigating hardness or rebound hardness by measuring extent of rebound of a striking body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0083—Rebound strike or reflected energy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention relates to the technical field of concrete strength testing, and discloses a concrete strength testing device and a concrete strength testing method, which comprise a machine body assembly, wherein the machine body assembly comprises a machine base, a lower pressure bearing seat and an upper pressure bearing seat are symmetrically arranged on the machine base, an isolation chamber for covering the lower pressure bearing seat and the upper pressure bearing seat is arranged above the machine base, and four surfaces of the inner side wall of the isolation chamber are respectively provided with a side rebound testing assembly and a dust collection assembly; the side surface resilience test assembly comprises a resilience test seat, and one side of the resilience test seat is fixedly connected with a polished rod; through setting up the test assembly is kick-backed to the side and the test assembly is kick-backed to the top surface, can measure the resilience value of the concrete piece of test automatically, promote the degree of automation and the efficiency of test, simultaneously, adopt the mode of range finding, guide the position of placing of concrete piece, make the tester can be accurate put the concrete piece to the center of pressure-bearing platform, and then promote the precision of test.
Description
Technical Field
The invention relates to the technical field of concrete strength testing, in particular to a concrete strength testing device and a concrete strength testing method.
Background
Concrete is a building material with the widest application and the largest consumption in engineering construction. In the engineering construction process, a pressure testing machine is needed to test the compression resistance, bending resistance and the like of a concrete test block, a component and the like so as to judge the performance of the concrete test block, the component and the like, the strength test of the concrete mainly comprises a rebound method, an ultrasonic rebound synthesis method, a core drilling method, a post-pulling out method, a post-anchoring method and a pulling-off method, at present, the core drilling method is the method with the highest reliability, the core drilling method is to perform load pressure test on a drilled concrete core piece through core drilling, and in the test process, the compression resistance strength of the concrete needs to be tested by utilizing constant load pressure.
According to the concrete strength test evaluation standard GB/T50107-2010, the strength grade of concrete is divided according to a cube compressive strength standard value, the concrete strength grade is represented by a symbol C and the cube compressive strength standard value (in N/mm & lt 2 & gt), the cube compressive strength standard value refers to a value in the overall distribution of the compressive strength measured by a standard test method in the age of 28d of a cube test piece with the side length of 150mm manufactured and maintained by a standard method, and the percentage of the strength lower than the value is not more than 5%.
Among the prior art, in order to promote the precision of test, simultaneously, in order to have a reference to the intensity of being tested the concrete piece, the intensity tester is before testing, need test the resilience value around the concrete piece, at present, the measurement of resilience value needs to be carried out manually, and is comparatively troublesome, simultaneously, in order to promote the measuring accuracy, need place concrete piece accuracy on the bearing platform, at present, when placing, need place according to tester's experience, lead to the precision not high.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a concrete strength testing device and a method, which have the advantages of automatically measuring the rebound value around a concrete piece and accurately guiding a tester to place the concrete piece, and solve the problems that the measurement of the rebound value needs to be carried out manually and is troublesome, and meanwhile, in order to improve the testing accuracy, the concrete piece needs to be accurately placed on a pressure bearing table, and at present, the concrete piece needs to be placed according to the experience of the tester during placement, so that the accuracy is not high.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a concrete strength testing device comprises a machine body assembly, wherein the machine body assembly comprises a machine base, a lower bearing seat and an upper bearing seat are symmetrically arranged on the machine base, an isolation chamber used for covering the lower bearing seat and the upper bearing seat is arranged above the machine base, and a side rebound testing assembly and a dust collection assembly are arranged on four sides of the inner side wall of the isolation chamber;
the side resilience test assembly comprises a resilience test seat, one side of the resilience test seat is fixedly connected with a polished rod, the outer side wall of the polished rod is slidably connected with a movable plate, the outer side wall of the resilience test seat is fixedly connected with an air cylinder, the telescopic end of the air cylinder is fixedly connected with one side of the movable plate, the other side of the movable plate is fixedly connected with a side resiliometer support, and a resiliometer I is clamped on the side resiliometer support.
Preferably, the top fixedly connected with workstation of frame, the pneumatic cylinder is installed at the top of workstation, the flexible end fixedly connected with support column of pneumatic cylinder, lower bearing seat fixed connection in the top of support column, the top fixedly connected with stand of workstation, the top fixedly connected with roof of stand, go up bearing seat fixed connection in the bottom of roof.
By adopting the scheme, when the test is carried out, the lower bearing seat on the hydraulic cylinder driving supporting column on the workbench moves upwards, so that the concrete piece on the lower bearing seat gradually leans against the upper bearing seat, when the concrete piece is in contact with the upper bearing seat, the hydraulic cylinder applies load to the concrete piece, and when the concrete piece is broken, the load intensity of the concrete piece can be known.
Preferably, the first resiliometer adopts an electronic resiliometer with bluetooth communication.
Through adopting above-mentioned scheme, be equipped with the bluetooth communication original paper in the electronic type resiliometer, after the resiliometer test was accomplished, the resiliometer passes through bluetooth communication, with rebound value wireless transport to computer end or removal end, does not need artifical record, can make things convenient for the tester to take notes and save.
Preferably, a cushion block made of rubber materials is arranged between the first resiliometer and the moving plate.
Through adopting above-mentioned scheme, through set up the cushion between resiliometer one and movable plate, make the cushion support resiliometer one, realize the shock attenuation to resiliometer one, promote the test result of resiliometer one.
Preferably, the dust collection assembly comprises a dust collector, an air exhaust end of the dust collector is provided with a flexible hose, one end of the flexible hose is fixedly connected with a dust collection pipe, one end of the dust collection pipe is fixedly connected with a dust collection cover, and the dust collection pipe is installed on the movable plate.
By adopting the scheme, after the concrete part is broken, the dust collector starts to work, so that the dust collector absorbs dust in the surrounding air through the telescopic hose and the dust absorption pipe, and the dust can be effectively prevented from flying after the test is finished.
Preferably, the outer side wall of movable plate installs the distancer, the distancer is equipped with four altogether, four the ninety degrees of distancer is a set of distribution on same horizontal plane.
Through adopting above-mentioned scheme, through setting up four distancers of group, every distancer of group is ninety degrees and arranges, when the concrete part was placed on lower bearing seat, the distance between concrete part and self is measured simultaneously to four distancers of group, because four distancers of group are the same with the centre of a circle distance of lower bearing seat, make only when the center of concrete part is in down on the centre of a circle of bearing seat, the distance between four distancers of group and the concrete part is the same, make the tester before testing, can be according to the distance between four distancers of group and the concrete part, the position of accurate adjustment concrete, can effectively promote the measuring accuracy of concrete.
Preferably, the lateral wall of going up the pressure-bearing seat articulates there is the observation door, the inside of going up the pressure-bearing seat is equipped with the top surface resilience test subassembly that is used for testing concrete spare top surface resilience value.
Through adopting above-mentioned scheme, through setting up the top surface test assembly that kick-backs in last bearing seat for the device can carry out the synchronous test of resilience value to the top surface of concrete piece, further promotes the device's test convenience, and the observation door that sets up simultaneously can conveniently take resiliometer two.
Preferably, the top surface resilience test component comprises a resiliometer fixing bin, the inner side wall fixedly connected with top surface resiliometer support of the resiliometer fixing bin, the top surface resiliometer support is connected with a resiliometer II in a clamped mode, and the test end of the resiliometer II penetrates through the bottom surface of the upper bearing seat.
By adopting the scheme, before the rebound value of the top surface is tested, the second resiliometer is placed on the support of the rebound instrument of the top surface in the fixed bin of the resiliometer, the test end of the second resiliometer is positioned on the bottom surface of the upper bearing seat, and when the concrete piece is in contact with the bottom surface of the upper bearing seat, the rebound value of the top surface can be automatically tested.
A concrete strength testing method comprises the following steps:
s1: placing a concrete piece to be tested on the lower pressure bearing seat according to a concrete test standard;
s2: measuring the distances between the concrete piece and the four distance meters by using the four distance meters distributed in ninety degrees, and adjusting the position of the concrete piece according to the four measured distances to ensure that the concrete piece is positioned at the center position;
s3: starting the hydraulic cylinder to enable the lower bearing seat to drive the concrete piece to ascend to be in contact with the upper bearing seat;
s4: measuring the side rebound value of the concrete piece by using four side rebound testing components on four surfaces while contacting;
s5: meanwhile, the top surface resilience testing component of the top surface synchronously tests and measures the top surface resilience value of the concrete piece;
s6: the lower pressure bearing seat drives the concrete piece to continue to carry out constant pressure test on the strength of the concrete piece;
s7: after the concrete part is broken, the dust suction assembly starts to work to adsorb the broken dust.
(III) advantageous effects
Compared with the prior art, the invention provides a concrete strength testing device and a method, which have the following beneficial effects:
according to the concrete strength testing device and method, the side resilience testing component and the top surface resilience testing component are arranged, so that the resilience value of the tested concrete piece can be automatically measured, the automation degree and efficiency of testing are improved, meanwhile, the distance measurement mode is adopted, the placing position of the concrete piece is guided, so that testers can accurately place the concrete piece to the center of the pressure bearing table, and the testing precision is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a side rebound testing assembly and a dust collection assembly according to the present invention;
FIG. 3 is a schematic structural view of a side rebound test assembly according to the present invention;
FIG. 4 is a schematic view of the dust collecting assembly of the present invention;
FIG. 5 is a schematic structural view of an upper bearing block according to the present invention;
fig. 6 is a sectional view of an upper pressure bearing block in the present invention.
FIG. 7 is a schematic diagram of the location of a rangefinder in accordance with the present invention.
In the figure: 10. a body component; 11. a machine base; 12. a work table; 13. a hydraulic cylinder; 14. a support pillar; 15. a lower pressure bearing seat; 16. a column; 17. a top plate; 18. an upper bearing seat; 19. an isolation chamber;
20. a lateral rebound test assembly; 21. a rebound test seat; 22. a polish rod; 23. moving the plate; 24. a cylinder; 25. a lateral resiliometer support; 26. a first resiliometer; 27. cushion blocks;
30. a range finder;
40. a dust collection assembly; 41. a vacuum cleaner; 42. a flexible hose; 43. a dust collection pipe; 44. a dust hood;
50. an observation door;
60. a top surface rebound test assembly; 61. a rebound tester fixing bin; 62. a top surface resiliometer support; 63. and a second rebound tester.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example one
A concrete strength testing device comprises a machine body assembly 10, the machine body assembly 10 comprises a machine base 11, a lower pressure bearing seat 15 and an upper pressure bearing seat 18 are symmetrically arranged on the machine base 11, the top of the machine base 11 is fixedly connected with a workbench 12, a hydraulic cylinder 13 is installed at the top of the workbench 12, a support column 14 is fixedly connected with a telescopic end of the hydraulic cylinder 13, the lower pressure bearing seat 15 is fixedly connected with the top of the support column 14, the top of the workbench 12 is fixedly connected with a stand column 16, the top end of the stand column 16 is fixedly connected with a top plate 17, the upper pressure bearing seat 18 is fixedly connected with the bottom of the top plate 17, an isolation chamber 19 for covering the lower pressure bearing seat 15 and the upper pressure bearing seat 18 is arranged above the machine base 11, a side rebound testing assembly 20 and a dust suction assembly 40 are respectively installed on four sides of the inner side wall of the isolation chamber 19, the dust suction assembly 40 comprises a dust collector 41, a telescopic hose 42 is arranged at the air suction end of the dust collector 41, a dust suction pipe 43 is fixedly connected with a dust suction hood 44, and the dust pipe 43 is installed on a movable plate 23;
side resilience test subassembly 20 includes resilience test seat 21, one side fixedly connected with polished rod 22 of resilience test seat 21, polished rod 22's lateral wall sliding connection has movable plate 23, resilience test seat 21's lateral wall fixedly connected with cylinder 24, cylinder 24's flexible end and one side fixed connection of movable plate 23, movable plate 23's opposite side fixedly connected with side resiliometer support 25, the joint has resiliometer 26 on the side resiliometer support 25, resiliometer 26 adopts the electronic type resiliometer that has bluetooth communication, be equipped with rubber materials's cushion 27 between resiliometer 26 and the movable plate 23, distancer 30 is installed to movable plate 23's lateral wall, distancer 30 is equipped with four altogether, four distancers 30 ninety degrees are a set of distribution on same horizontal plane.
Referring to fig. 1-7, firstly, according to the concrete test standard, a concrete piece meeting the specification is placed on the lower pressure bearing seat 15, when the concrete piece is placed on the lower pressure bearing seat 15, the four sets of distance meters 30 simultaneously measure the distance between the concrete piece and the concrete piece, since the distances between the centers of the four sets of distance meters 30 and the lower pressure bearing seat 15 are the same, only when the center of the concrete piece is located on the center of the lower pressure bearing seat 15, the distances between the four sets of distance meters 30 and the concrete piece are the same, so that a tester can accurately adjust the position of the concrete according to the distances between the four sets of distance meters 30 and the concrete piece before testing, the testing accuracy of the concrete can be effectively improved, after the placement of the concrete piece is completed, the hydraulic cylinder 13 is started, so that the hydraulic cylinder 13 drives the movable plate 23 to move upwards to the lower pressure bearing seat 15 on the support post 14, so that the concrete piece on the lower pressure bearing seat 15 gradually leans against the upper pressure bearing seat 18, when the concrete piece contacts the upper pressure bearing seat 18, the cylinder 24 is started, so that the movable plate 24 drives the movable plate 23 to move towards the outer side wall of the concrete piece, so that the dust suction pipe 26 on the movable plate 23 is moved, when the dust suction of the concrete piece is started, the concrete piece, the test is completed, and the dust suction pipe is started, the dust suction pipe 23 can be recovered, and the dust suction pipe is recovered, when the dust suction pipe is recovered, the movable plate 23 is recovered, the dust suction pipe 41, the dust suction pipe is recovered, and the dust suction pipe is recovered concrete piece is recovered, and the dust suction pipe is recovered.
Example two
The function of synchronously testing the rebound value of the concrete top surface is added on the basis of the first embodiment.
The lateral wall of going up pressure-bearing seat 18 articulates there is observation door 50, the inside of going up pressure-bearing seat 18 is equipped with the top surface rebound test subassembly 60 that is used for testing concrete spare top surface rebound value, top surface rebound test subassembly 60 includes resiliometer fixed compartment 61, the inside wall fixedly connected with top surface resiliometer support 62 of resiliometer fixed compartment 61, the joint has resiliometer two 63 on the top surface resiliometer support 62, the bottom surface of last pressure-bearing seat 18 is run through to the test end of resiliometer two 63.
Referring to fig. 1 to 7, before testing the rebound value of the top surface, the second rebound apparatus 63 is first placed on the rebound apparatus bracket 62 of the top surface in the rebound apparatus fixing bin 61, so that the testing end of the second rebound apparatus 63 is located on the bottom surface of the upper bearing seat 18, and when the concrete piece contacts with the bottom surface of the upper bearing seat 18, the rebound value of the top surface can be automatically tested.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a concrete strength testing arrangement, includes organism subassembly (10), organism subassembly (10) are including frame (11), the symmetry is arranged down bearing block (15) and is gone up bearing block (18) on frame (11), the top of frame (11) is equipped with and is used for covering lower bearing block (15) and go up isolation ward (19) of bearing block (18), its characterized in that: four surfaces of the inner side wall of the isolation chamber (19) are respectively provided with a side rebound testing assembly (20) and a dust collection assembly (40);
the dust collection assembly (40) comprises a dust collector (41), a telescopic hose (42) is arranged at the air suction end of the dust collector (41), a dust collection pipe (43) is fixedly connected to one end of the telescopic hose (42), a dust collection cover (44) is fixedly connected to one end of the dust collection pipe (43), and the dust collection pipe (43) is installed on the movable plate (23);
the side rebound testing assembly (20) comprises a rebound testing seat (21), one side of the rebound testing seat (21) is fixedly connected with a polished rod (22), the outer side wall of the polished rod (22) is connected with a moving plate (23) in a sliding mode, the outer side wall of the rebound testing seat (21) is fixedly connected with an air cylinder (24), the telescopic end of the air cylinder (24) is fixedly connected with one side of the moving plate (23), the other side of the moving plate (23) is fixedly connected with a side rebound instrument support (25), and a first rebound instrument (26) is clamped on the side rebound instrument support (25);
distancer (30) are installed to the lateral wall of movable plate (23), distancer (30) are equipped with four altogether, four distancer (30) ninety degrees are a set of distribution on same horizontal plane.
2. A concrete strength testing device according to claim 1, characterized in that: the top fixedly connected with workstation (12) of frame (11), pneumatic cylinder (13) are installed at the top of workstation (12), the flexible end fixedly connected with support column (14) of pneumatic cylinder (13), lower pressure-bearing seat (15) fixed connection in the top of support column (14), the top fixedly connected with stand (16) of workstation (12), the top fixedly connected with roof (17) of stand (16), go up pressure-bearing seat (18) fixed connection in the bottom of roof (17).
3. A concrete strength testing device according to claim 1, characterized in that: the first resiliometer (26) is an electronic resiliometer with Bluetooth communication.
4. A concrete strength testing arrangement according to claim 1, characterized in that: and a cushion block (27) made of rubber materials is arranged between the first resiliometer (26) and the moving plate (23).
5. A concrete strength testing arrangement according to claim 1, characterized in that: the lateral wall of going up pressure-bearing seat (18) articulates there is observation door (50), the inside of going up pressure-bearing seat (18) is equipped with top surface resilience test subassembly (60) that are used for testing concrete spare top surface resilience value.
6. A concrete strength testing arrangement according to claim 5, characterized in that: test component (60) is kick-backed to top surface includes the fixed storehouse of resiliometer (61), inside wall fixedly connected with top surface resiliometer support (62) of the fixed storehouse of resiliometer (61), the joint has resiliometer two (63) on top surface resiliometer support (62), the test end of resiliometer two (63) runs through the bottom surface of last bearing seat (18).
7. A concrete strength testing method, a concrete strength testing apparatus according to any one of claims 1 to 6, comprising the steps of:
s1: placing a concrete piece to be tested on the lower pressure bearing seat according to a concrete test standard;
s2: measuring the distances between the concrete piece and the four distance meters by using the four distance meters distributed in ninety degrees, and adjusting the position of the concrete piece according to the four measured distances to ensure that the concrete piece is positioned at the center position;
s3: starting the hydraulic cylinder to enable the lower bearing seat to drive the concrete piece to ascend to be in contact with the upper bearing seat;
s4: measuring the side rebound value of the concrete piece by using four side rebound testing assemblies on four sides while contacting;
s5: meanwhile, the top surface resilience testing component of the top surface synchronously tests and measures the top surface resilience value of the concrete piece;
s6: the lower pressure bearing seat drives the concrete piece to continuously carry out constant pressure test on the strength of the concrete piece;
s7: after the concrete piece is broken, the dust collection assembly starts to work to adsorb the broken dust.
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