CN202126425U - Concrete pouring quality testing instrument - Google Patents
Concrete pouring quality testing instrument Download PDFInfo
- Publication number
- CN202126425U CN202126425U CN201120146560XU CN201120146560U CN202126425U CN 202126425 U CN202126425 U CN 202126425U CN 201120146560X U CN201120146560X U CN 201120146560XU CN 201120146560 U CN201120146560 U CN 201120146560U CN 202126425 U CN202126425 U CN 202126425U
- Authority
- CN
- China
- Prior art keywords
- tube
- test electrode
- test
- concrete pouring
- layered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a concrete pouring quality testing instrument, comprising a layered testing container; the concrete pouring quality testing instrument is characterized in that the layered testing container is a three-layer cylinder formed by overlapping, combining and connecting an upper-layered cylinder, a middle-layered cylinder and a lower-layered cylinder; the lower-layered cylinder is provided with a bottom; the upper-layered cylinder and the middle-layered cylinder have no bottoms; all the side walls of the upper-layered cylinder, the middle-layered cylinder and the lower-layered cylinder are provided with two symmetrical jacks, in which a testing electrode is respectively arranged; two testing electrodes are separated by the side wall of an insulating cylinder; the leads of the testing electrodes are respectively connected with terminals of a layered resistivity testing instrument. The utility model can be used for measuring concrete pouring uniformity and compactness under the engineering vibration conditions, the test result is stable and accurate and the operation is convenient and rapid.
Description
Technical field
The utility model relates to a kind of concrete pouring quality proving installation, more particularly, relates to the device of building homogeneity and density through test casting concrete resistivity eigenwert sign.
Background technology
Cement concrete is the most large artificial material, in building industry, is widely used.The xoncrete structure long durability is the key of its service reliability of decision and security, improves the key technical problem that the long-term permanance of concrete has become current international concern.ACI (ACI) points out that the good pouring quality that vibrates is that xoncrete structure obtains low-permeability, and the precondition (ACI 201.2R-2008) of deterioration is corroded in opposing.Vibrate to build and can discharge the thick bubble of moulding inside concrete, improve density, determined the formation and development of maturing pore structure, the process of building should keep uniform component distribution, avoids problems such as bleeding, segregation and coarse aggregate sedimentation.It is thus clear that the key problem that promotes the concrete depositing quality is to realize that cast is closely knit and even, top priority is that homogeneity and density are built in correct test.
The discrimination standard of the pouring quality that vibrates that existing concrete construction technology standard is given is based on the differentiation of presentation, lacks the apparatus for quantitatively of placement layer by layer quality in the prior art.In the existing fresh concrete method of testing; Be generally used for testing concrete like method of testings such as various workability tests, unit weight, air content, bleeding rate and coarse aggregate settling amounts and be prone to density or homogeneity hold facility; Be not suitable for that homogeneity and density former built in test because: (1) its test target is evaluation fresh concrete material property; And the control quality of production, there is appreciable impact in the condition of vibrating to pouring quality, therefore needs to combine Vibration Technology evaluation and control pouring quality
(2) the proving installation size is little, is not suitable for the test of adopting inner high frequency tamping casting concrete; (3) testing efficiency is low, and accuracy is low.In the existing maturing method of testing, can be used for estimating pouring quality like pattern analysis of ultrasonic listening, unit weight and coarse aggregate sedimentation etc., but its limitation is: (1) test duration is long, and efficient is low; (2) test process relative complex, test accuracy receives operating personnel's horizontal constraints.
The utility model content
The utility model provides a kind of concrete pouring quality tester, and it is low to solve available coagulation soil pouring quality method of testing applicability
,Test duration is long, efficient is low, accuracy is low, the test process relative complex, and test accuracy receives the technical matters of operating personnel's horizontal constraints.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of concrete pouring quality tester; Comprise the zonation test container, it is characterized in that, three layers of cylindrical drum that said zonation test container is connected by higher slice tube, middle layering tube and lower leaf tube stacked combination; Said lower leaf tube has the end; Higher slice tube and middle layering tube do not have the end, and two jacks of symmetry are all arranged on the tube sidewall of said higher slice tube, middle layering tube and lower leaf tube, respectively settle a test electrode in two jacks; Isolated by the insulating cylinder sidewall between two test electrodes, the lead-in wire of each test electrode is connected with the terminals of layered resistance rate tester respectively.
Said individual layer drum diameter is 350mm～500mm, height 100～150mm, and test electrode is positioned at individual layer cylinder 1/2 and highly locates; And test electrode is positioned at the two ends of cutting circular diameter; The test electrode diameter is 10mm, and individual layer cylinder build-in test electrode length is 1/8～1/4 of a diameter, and the individual layer cylinder is outward 20mm; The preferred red copper preparation of test electrode, test electrode is positioned at an Outboard Sections and is with the rubber protective sleeve.
The two edges up and down of the lower limb of said higher slice tube, middle layering tube and the coboundary of lower leaf tube have flange, are distributed with connecting hole on the flange, and the connecting hole that passes two correspondences up and down by keeper is three layers of cylindrical drum location just.
Described keeper is pin or bolt.
The top cuff of said flange has annular holder, and annular holder is an open annular, an end of opening and connecting link inner hinged, and the inner of the hinged spanner of the other end of opening, the outer end of connecting link and the stage casing of spanner are hinged.
Said layered resistance rate tester; Comprise shell, power conversion unit, control module, arithmetic element and output unit; The lead-in wire of each test electrode is connected with control module through terminals respectively, and described power conversion unit converts direct current the alternating current of specific voltage and frequency into, and described control module links to each other with arithmetic element with power conversion unit; The input end of arithmetic element is connected with output unit; Described control module is used on described test electrode, applying alternating current successively, measures the layered resistance value, and described arithmetic element can be according to layered resistance value and test electrode constant calculations layered resistance rate; And calculate layered resistance rate mean value and resistivity delamination degree according to the layered resistance rate, described output unit can output to the result of calculation of arithmetic element the client display screen.
The specific voltage of said power supply conversion unit is 50V～110V, and described CF is 1kHz.
Air bubble content and component distribute and have determined concrete pouring quality; It also is the key factor that influences fresh concrete resistivity; The utility model is built homogeneity and density through the reflection of test fresh concrete resistivity; Need not directly test and pour into a mould the physical index of homogeneity and density, and replace test deposit concrete resistivity, utilize the resistivity eigenwert to characterize cast homogeneity and density.The zonation test container is three layers of unitized construction, and layered resistance rate tester is used to set up layering physical index and resistivity eigenwert correlationship, and its WV is 50V～110V; The utility model is the time point test; The test duration requirement is not more than 10 minutes, and testing efficiency is high, and the time spent is short.This method of testing also has the advantage that test accuracy height, test result are stable, test process is relatively easy, easy to operate, fast, do not receive operating personnel's horizontal constraints, can be used for the detection of concrete depositing homogeneity and density under the Vibration Technology condition.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is further specified through embodiment.
Fig. 1 is the assembling synoptic diagram of zonation test container.
Fig. 2 is the synoptic diagram of annular holder.
Fig. 3 is the structural representation of the utility model.
Fig. 4 is the block scheme of layered resistance rate tester.
Fig. 5 resistivity and relative compaction correlativity test result.
Fig. 6 resistivity delamination degree and unit weight delamination degree correlativity test result.
Fig. 7 resistivity delamination degree and coarse aggregate content delamination degree correlativity test result.
Description of drawings: layering tube, 3-lower leaf tube, 4-flange, 5-connecting hole, 6-test electrode, 7-keeper, 8-annular holder, 9-connecting link, 10-spanner, 11-lead-in wire, 12-layered resistance rate tester, 13-terminals among 1-higher slice tube, the 2-.
Embodiment
Embodiment is referring to Fig. 1, Fig. 3; A kind of concrete pouring quality tester comprises the zonation test container of being processed by insulating material, three layers of cylindrical drum that said zonation test container is connected by higher slice tube 1, middle layering tube 2 and lower leaf tube 3 stacked combination; Said lower leaf tube 3 has the end; The higher slice tube 1 and the 2 no ends of middle layering tube all have two jacks of symmetry on the tube sidewall of said higher slice tube 1, middle layering tube 2 and lower leaf tube 3, respectively settle a test electrode 6 in two jacks; Isolated by the insulating cylinder sidewall between two test electrodes 6, the lead-in wire 11 of each test electrode is connected with the terminals 13 of layered resistance rate tester 12 respectively.
Said individual layer drum diameter is 350mm～500mm, height 100～150mm, and test electrode 6 is positioned at individual layer cylinder 1/2 and highly locates; And test electrode 6 is positioned at the two ends of cutting circular diameter; Test electrode 6 diameters are 10mm, and individual layer cylinder build-in test electrode 6 length are 1/8～1/4 of diameter, and the individual layer cylinder is outward 20mm; Test electrode 6 preferred red copper preparations, test electrode 6 is positioned at an Outboard Sections and is with the rubber protective sleeve.
The two edges up and down of the lower limb of said higher slice tube 1, middle layering tube 2 and the coboundary of lower leaf tube 3 have flange 4, are distributed with connecting hole 5 on the flange 4, and the connecting hole of two correspondences is located three layers of cylindrical drum about being passed by keeper 7.
Described keeper 7 is pin or bolt.It is 90 ° that pin 7 cooperates with test electrode holder angle between the realization adjacent layers with connecting hole 5.
The top cuff of said flange 4 has annular holder, and annular holder is an open annular, an end of opening and connecting link 9 inner hinged, and the inner of the hinged spanner 10 of the other end of opening, the stage casing of the outer end of connecting link 9 and spanner 10 is hinged.
Referring to Fig. 3, Fig. 4, said layered resistance rate tester 12 comprises shell, power conversion unit, control module, arithmetic element and output unit, and the lead-in wire of each test electrode is connected with control module through terminals 13 respectively.
Said power conversion unit converts direct current the alternating current of specific voltage and frequency into, and the specific voltage of said power supply conversion unit is 50V～110V, and described CF is 1kHz.This frequency alternating current can be eliminated the influence of test electrode polarization to resistivity measurement.
Said control module links to each other with arithmetic element with power conversion unit, on described test electrode, applies alternating current successively, test layered resistance value.
The input end of arithmetic element is connected with output unit, and arithmetic element is further calculated layered resistance rate mean value and resistivity delamination degree according to the layered resistance rate according to layered resistance value and test electrode constant calculations layered resistance rate.The resistivity measurement principle is following:
According to conductivity formula (1)
< img TranNum=" 102 " file=" 8938DEST_PATH_IMAGE001.GIF " he=" 14 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 53 "/> formula 1
In the formula: F-conductivity; K-test electrode constant; G-electricity is led.
Because resistance and electricity are led reciprocal each other, conductivity and resistivity are reciprocal each other, get formula 2 by formula 1:
< img TranNum=" 106 " file=" 988395DEST_PATH_IMAGE002.GIF " he=" 29 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 34 "/> formula 2
In the formula: E-resistivity; C-resistance; K-test electrode constant.
In the time of 25 ℃, adopt the 0.1mol/L Klorvess Liquid as volumetric solution, its conductivity is 1.288s/m, according to formula 2, gets test electrode constant calculations formula:
< img TranNum=" 110 " file=" 456548DEST_PATH_IMAGE003.GIF " he=" 18 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 58 "/> formula 3
In the formula: C
0-volumetric solution resistance.
According to formula 2 and formula 3, get the resistivity formula:
< img TranNum=" 115 " file=" 976391DEST_PATH_IMAGE004.GIF " he=" 35 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 65 "/> formula 4
In the formula: E-concrete resistivity; C-concrete resistance; C
0-volumetric solution resistance.
Described control module is used on described test electrode, applying alternating current successively; Measure the layered resistance value; Described arithmetic element can be according to layered resistance value and test electrode constant calculations layered resistance rate, and calculates layered resistance rate mean value and resistivity delamination degree according to the layered resistance rate.
At last, output unit can output to the result of calculation of arithmetic element the client display screen.
Fig. 2 representative ring shaped clamp 8.Annular holder 8 effects are to make the individual layer cylinder to form and build decker, during use annular holder spanner 10 is opened and is placed on the flange, press lower ejector lever 10, drive connecting link 9, make annular holder 8 clamping flanges.Use encapsulant to improve sealing effectiveness between flange before being preferably in combination, like vaseline etc.Preferably use the higher metal material of rigidity to prepare annular holder 8, like stainless steel etc.Be preferably in annular holder 7 inboards suitable thickness and flexible packing ring are set.
A kind of measurement concreting homogeneity and density method of testing are used described a kind of concrete pouring quality tester, and testing procedure is following:
(a), assembling zonation test container; Higher slice tube 1, middle layering tube 2 and lower leaf tube 3 stacked combination are connected into three layers of cylindrical drum, and the connecting hole 5 that is passed on the flange 4 up and down by keeper 7 makes three layers of cylindrical drum location, and the spanner 10 of two annular holders 8 is opened and be placed in up and down on the two-layer flange 4; Press lower ejector lever 10; Drive connecting link 9, make annular holder 8 clamping flange limits, in the jack of higher slice tube 1, middle layering tube 2 and lower leaf tube 3, respectively settle a test electrode 6; Measure the test electrode constant, the method for test electrode constant: connect test electrode 6 with lead and connect hole 13 with power supply.Under 25 ℃ of conditions, the 0.1mol/L Klorvess Liquid is filled with decker 11, through TIP the test electrode constant being set is 1; Regulate control panel; With 50V～110V, 1kHz puts on successively, in and lower floor's test electrode 6, the test layered resistance; Resistivity is identical with the resistance displayed value on the LCDs at this moment, is designated as C
0, test electrode constant K=1.288C then
0
(b), the preparation concrete, ins conjunction with Vibration Technology, build and take shape in the zonation test container, specifically Vibration Technology such as concrete vibrating mode, the frequency of vibrating and vibrating time etc., last floating surface;
(c), the lead-in wire 11 with each test electrode is connected with the terminals 13 of layered resistance rate tester 12 respectively; To change alternating current and put on each test electrode 6 successively; Through TIP the test electrode constant is set; Regulate control panel, sequentially determining zonation test container the upper, middle and lower resistance value, the test duration should not be greater than 5min;
(d), by step (a) and (c) confirm the layered resistance rate;
(e), by formula 5 calculate layered resistance rate mean value, formula 6 calculated resistance rate delamination degree;
< img TranNum=" 130 " file=" 354545DEST_PATH_IMAGE005.GIF " he=" 42 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 124 "/> formula 5
< img TranNum=" 132 " file=" 301641DEST_PATH_IMAGE006.GIF " he=" 46 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 160 "/> formula 6
In the formula: E
a-layered resistance rate mean value; E
f-resistivity delamination degree; E
u-upper resistors rate; E
m-middle layer resistivity; E
d-lower resistors rate;
(f), by layered resistance rate mean value E in the step (e)
aSign is built density, resistivity delamination degree E
fSign is built homogeneity.
Fig. 5 representes layered resistance rate mean value and relative density negative linear correlation; Explain that layered resistance rate mean value characterizes the concreting density and has reliability; Wherein relative compaction is the ratio of unit weight and theoretical maximum close-packed structure unit weight, but the quantitatively characterizing concrete density.
Fig. 6 representes that the resistivity delamination degree is relevant with unit weight delamination degree linear positive; The unit weight homogeneity that the concreting of resistivity delamination degree sign is described has reliability; Wherein the unit weight delamination degree is the number percent of the upper and lower bulk density difference and the upper and lower average volume density, but the homogeneity of quantitatively characterizing unit weight.
Fig. 7 representes that the resistivity delamination degree is relevant with coarse aggregate content delamination degree linear positive; The coarse aggregate distributing homogeneity that the concreting of resistivity delamination degree sign is described has reliability; Wherein coarse aggregate content delamination degree is the upper and lower coarse aggregate number percent with the upper and lower coarse aggregate mass average value of poor quality, but the homogeneity of quantitatively characterizing unit weight.
Fig. 5, Fig. 6, Fig. 7 illustrated together resistivity delamination degree characterize the concreting homogeneity and have reliability.
Claims (7)
1. concrete pouring quality tester; Comprise the zonation test container; It is characterized in that; Three layers of cylindrical drum that said zonation test container is connected by higher slice tube (1), middle layering tube (2) and lower leaf tube (3) stacked combination, said lower leaf tube (3) has the end, the higher slice tube (1) and the no end of middle layering tube (2); Two jacks that symmetry is all arranged on the tube sidewall of said higher slice tube (1), middle layering tube (2) and lower leaf tube (3); Respectively settle a test electrode (6) in two jacks, isolated by the insulating cylinder sidewall between two test electrodes (6), the lead-in wire (11) of each test electrode (6) is connected with the terminals (13) of layered resistance rate tester (12) respectively.
2. concrete pouring quality tester according to claim 1 is characterized in that, said individual layer drum diameter is 350mm～500mm; Height 100～150mm; Test electrode (6) is positioned at individual layer cylinder 1/2 highly to be located, and test electrode (6) is positioned at the two ends of cutting circular diameter, and test electrode (6) diameter is 10mm; Individual layer cylinder build-in test electrode (6) length is 1/8～1/4 of diameter; The individual layer cylinder is outward 20mm, the preferred red copper preparation of test electrode (6), and test electrode (6) is positioned at an Outboard Sections and is with the rubber protective sleeve.
3. concrete pouring quality tester according to claim 1 and 2; It is characterized in that; The coboundary of the two edges up and down of the lower limb of said higher slice tube (1), middle layering tube (2) and lower leaf tube (3) has flange (4); Be distributed with connecting hole (5) on the flange (4), the connecting hole (5) that passes two correspondences up and down by keeper (7) is three layers of cylindrical drum location just.
4. concrete pouring quality tester according to claim 3 is characterized in that, described keeper (7) is pin or bolt.
5. concrete pouring quality tester according to claim 4; It is characterized in that; The top cuff of said flange (4) has annular holder (8), and annular holder (8) is an open annular, an end of opening and connecting link (9) inner hinged; The inner of the hinged spanner of the other end of opening (10), the stage casing of the outer end of connecting link (9) and spanner (10) is hinged.
6. concrete pouring quality tester according to claim 5; It is characterized in that; Said layered resistance rate tester (12) comprises shell, power conversion unit, control module, arithmetic element and output unit, and the lead-in wire of each test electrode is connected with control module through terminals (13) respectively; Described power conversion unit converts direct current in the alternating current of specific voltage and frequency; Described control module links to each other with arithmetic element with power conversion unit, and the input end of arithmetic element is connected with output unit, and described control module is used on described test electrode, applying alternating current successively; Measure the layered resistance value, described output unit can output to the result of calculation of arithmetic element the client display screen.
7. concrete pouring quality tester according to claim 6 is characterized in that, the specific voltage of said power supply conversion unit is 50V～110V, and described CF is 1kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120146560XU CN202126425U (en) | 2011-05-10 | 2011-05-10 | Concrete pouring quality testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120146560XU CN202126425U (en) | 2011-05-10 | 2011-05-10 | Concrete pouring quality testing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202126425U true CN202126425U (en) | 2012-01-25 |
Family
ID=45489490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120146560XU Expired - Fee Related CN202126425U (en) | 2011-05-10 | 2011-05-10 | Concrete pouring quality testing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202126425U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190029147A (en) * | 2017-09-12 | 2019-03-20 | 경북대학교 산학협력단 | Concrete Segregation Measuring Device |
| KR20190082731A (en) * | 2019-07-03 | 2019-07-10 | 경북대학교 산학협력단 | Concrete segregation measuring method |
-
2011
- 2011-05-10 CN CN201120146560XU patent/CN202126425U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190029147A (en) * | 2017-09-12 | 2019-03-20 | 경북대학교 산학협력단 | Concrete Segregation Measuring Device |
| KR102019276B1 (en) * | 2017-09-12 | 2019-09-11 | 경북대학교 산학협력단 | Concrete Segregation Measuring Device |
| KR20190082731A (en) * | 2019-07-03 | 2019-07-10 | 경북대학교 산학협력단 | Concrete segregation measuring method |
| KR102012669B1 (en) * | 2019-07-03 | 2019-08-21 | 경북대학교 산학협력단 | Concrete segregation measuring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102269725B (en) | Device and method for testing concrete pouring uniformity and compactness | |
| CN102721637B (en) | Multi-functional test system and method for concrete durability under action of continuous pressure | |
| CN103575769B (en) | A kind of piezoelectric transducer for monitoring steel bar corrosion and monitoring steel bar corrosion method | |
| CN202018414U (en) | Working performance comprehensive test device for self-filling concrete for high speed railway slab ballastless tracks | |
| CN109779286A (en) | Reinforced steel concrete is by camber beam Calculation Methods of Shear Capacity | |
| CN109858179A (en) | Reinforced concrete is by camber beam Calculation Methods of Shear Capacity | |
| CN107677585B (en) | Device and method for measuring water permeability coefficient of water permeable material | |
| CN202126425U (en) | Concrete pouring quality testing instrument | |
| CN104360042A (en) | Device and method for testing internal frost-heave capacity of compacted soil | |
| CN107796745B (en) | Tunnel lining seepage water pressure and water volume measurement experiment device and method | |
| CN105759017A (en) | Device and method for evaluating anti-crack performance of external squares and internal circles of cement-based materials | |
| CN108507903A (en) | A method of measuring solid matter density and porosity | |
| CN103674705A (en) | Method for fast predicting compressive strength of cement in 24 hours | |
| CN201149571Y (en) | Device for measuring mortar air content on cement concrete surface | |
| CN109298025A (en) | The experimental rig and method of paste body filling slurry isolation in a kind of monitoring pipeline | |
| KR101323123B1 (en) | Defect detecting/degree-of-filling-in measuring apparatus for concrete during placement and method for defect detection/degree of filling-in measurement for the same | |
| CN204855306U (en) | Even matter nature of concrete and continuity test device that flows | |
| CN106468720B (en) | The magnetic force thixotropy generating device and test method of flow observation are carefully seen between particle | |
| CN102914493A (en) | Clamp for alternating current resistivity test of non-metallic material | |
| CN206505075U (en) | A kind of test device of the early age autogenous volumetric deformation of concrete | |
| CN104990839A (en) | Permeability test device for sand-containing fog sealing layer material | |
| CN102959366A (en) | Method and apparatus for measuring oil-content in production fluid | |
| KR102019276B1 (en) | Concrete Segregation Measuring Device | |
| CN207936886U (en) | A kind of device measuring thickness of concrete floor | |
| CN202648769U (en) | Added material weighing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20170510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |