CN204613058U - A kind of cement concrete segregation degree evaluation device - Google Patents
A kind of cement concrete segregation degree evaluation device Download PDFInfo
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- CN204613058U CN204613058U CN201520317053.6U CN201520317053U CN204613058U CN 204613058 U CN204613058 U CN 204613058U CN 201520317053 U CN201520317053 U CN 201520317053U CN 204613058 U CN204613058 U CN 204613058U
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- cement concrete
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Abstract
The utility model relates to a kind of cement concrete segregation degree evaluation device, and this device comprises support component, test parts and density measure parts; Described support component comprises base, armstand, crossbeam, jacking gear, bolt; Described test parts comprises fixed screw, vibrating device, material-containing chamber; Described density measure parts comprise column, Density Measuring Instrument, slide rail, stationary installation, guide rail.The utility model can the Vibration Condition of cement concrete in simulate and process of vibrating, and provides more real experimental data.It adds density measuring equipment, can the density of Measurement accuracy cement concrete in real time.Test unit of the present utility model is easy to operate, good economy performance, and practical value is high.
Description
Technical field
The utility model belongs to civil engineering work concrete construction field, relating to a kind of cement concrete segregation degree evaluation device, for evaluating the segregation degree of cement concrete, can provide reliable experimental data.
Background technology
Concrete segregation is that the cohesive strength between concrete mix composition material is not enough to the sinking of opposing coarse aggregate, and concrete mix composition is separated from each other, and causes the phenomenon that inner the Nomenclature Composition and Structure of Complexes is uneven.Be usually expressed as coarse aggregate and mortar is separated from each other, the bottom of the large mixture of particle deposition that such as density is large, or coarse aggregate from mixture, overall separation is out.
Cause the reason of segregation may be build, vibrate improper, maximum particle diameter of gathering materials be excessive, and coarse aggregate ratio is too high, and the content of Binder Materials and fine aggregate is on the low side, more excessive than the density of coarse aggregate with fine aggregate, or mixture overdrying or excessively wet etc.Mineral admixture or air entraining agent is used to reduce segregation.
Cement concrete segregation has very large harm, and the segregation of cement concrete affects the apparent effect of xoncrete structure, and the phenomenons such as sand streak, aggregate exposure, reinforcing steel bars exposed appear in concrete surface.Concrete strength is significantly declined, has a strong impact on xoncrete structure load-bearing capacity, destroy the security performance of structure, serious causing is done over again, and causes huge economic loss.The homogeneity of separating water cement concrete is poor, causes the contraction at each position of concrete inconsistent, easily produces concrete shrinkage crack.Particularly when constructing concrete floor, because concrete disintegration makes the grout layer on top layer thicken, shrinking and sharply increasing, occurring serious cracking phenomenon.Significantly reduce the concrete endurance qualities such as concrete impervious, freeze proof.
Directly do not evaluate the device of cement concrete segregation degree at present.Used is all some indirectly evaluation methods now, mainly slump method, slump method indirectly reflects the concrete education resistance energy of reaction by cohesiveness, and slump method can only be evaluated initial concrete disintegration degree and can not reflect final segregation degree.This patent directly can evaluate the segregation degree of cement concrete, provides experimental data accurately and reliably, has very strong practicality.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, provides a kind of cement concrete segregation degree evaluation device.
The purpose of this utility model is achieved through the following technical solutions:
This cement concrete segregation degree evaluation device, comprises support component, test parts and density measure parts; Described support component comprises base, armstand, crossbeam, jacking gear, bolt; Described test parts comprises fixed screw, vibrating device, material-containing chamber; Described density measure parts comprise column, Density Measuring Instrument, slide rail, stationary installation, guide rail;
One end of described base is fixedly installed armstand, and other end level is fixedly installed guide rail; In the upper end of armstand, crossbeam is set by jacking gear, crossbeam is fixed with stirrer; Base is provided with material-containing chamber, between base and material-containing chamber, is also provided with vibrating device;
Described guide rail is provided with can vertical to slide rail along guide rail horizontal slip, and described column is fixed on slide rail, and Density Measuring Instrument is fixed on slide rail, and the sidewall of material-containing chamber offers some circular holes from top to bottom successively.
Further, the bottom of above-mentioned base and vibrating device is fixed by bolt and fixed screw.
Above-mentioned Density Measuring Instrument is fixed on slide rail by stationary installation.
The utility model has following beneficial effect:
1, device of the present utility model can the Vibration Condition of cement concrete in simulate and process of vibrating, and provides more real experimental data.
2, device of the present utility model adds density measuring equipment, can the density of Measurement accuracy cement concrete in real time.
3, test parts is placed on base by device of the present utility model, more stable.
4, device of the present utility model adds the actual state of stirrer simulation concrete in transport and cargo handling process, and experimental data is more reliable.
5, test unit of the present utility model is easy to operate, good economy performance, and practical value is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1 is base; 2 is armstand; 3 is crossbeam; 4 is jacking gear; 5 is bolt; 6 is stirrer; 7 is column; 8 is Density Measuring Instrument; 9 is slide rail; 10 is stationary installation; 11 is fixed screw; 12 is vibrating device; 13 is circular hole; 14 is material-containing chamber; 15 is guide rail.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to Fig. 1, the device of evaluation cement concrete segregation degree of the present utility model comprises: support component, test parts and density measurement parts.Described support component comprises:
Base 1, makes superstructure stablize, plays a supportive role;
Armstand 2, its effect is fixed on base by crossbeam, for placing experimental part vacating space;
Crossbeam 3, its effect is fixed on above experimental part by stirring apparatus, conveniently carries out experiment;
Jacking gear 4, its effect stirring apparatus is entered or departs from 14 material-containing chamber;
Bolt 5, its effect is fixed on base by test parts;
Described test parts comprises:
Fixed screw 11, its effect combines test parts to be fixed on base;
Vibrating device 12, the power that its effect is to provide vibration makes the vibration of 14 material-containing chamber, imitates working-yard and carries out mechanical pudding to cement concrete;
Circular hole 13, its effect is the density making Density Measuring Instrument 8 directly can measure cement concrete;
Material-containing chamber 14, its effect holds cement concrete;
Described density measurement device comprises:
Column 7, its effect plays a supportive role;
Density Measuring Instrument 8, its effect is the density measuring cement concrete;
Slide rail 9, its effect is that Density Measuring Instrument 8 can be slided along vertical direction;
Stationary installation 10, its effect is fixed on slide rail 9 by Density Measuring Instrument 8;
Guide rail 15, its effect be allow column 7 away from or close to experimental part, be convenient for measuring cement concrete density.
The annexation of above all parts is:
One end of base 1 is fixedly installed armstand 2, and other end level is fixedly installed guide rail 15; In the upper end of armstand 2, crossbeam 3 is set by jacking gear 4, crossbeam 3 is fixed with stirrer 6; Base 1 is provided with material-containing chamber 14, between base 1 and material-containing chamber 14, is also provided with vibrating device 12; Described guide rail 15 is provided with can vertical to slide rail 9 along guide rail 15 horizontal slip, and described column 7 is fixed on slide rail 9, and Density Measuring Instrument 8 is fixed on slide rail 9, and the sidewall of material-containing chamber 14 offers some circular holes 13 from top to bottom successively.Further: base 1 is fixed by bolt 5 and fixed screw 11 with the bottom of vibrating device 12.Density Measuring Instrument 8 is fixed on slide rail 9 by stationary installation 10.
Utilize above cement concrete segregation degree evaluation device, the utility model test water cement concrete segregation level determinations method, comprises the following steps:
(1) material-containing chamber 14 and vibrating device 12 are taken off, then the cement concrete mixed is poured in material-containing chamber 14 equably, gently knock 4 ~ 5 times, make concrete compaction, reduce experimental error, be then fixed on base 1.
(2) starting jacking gear 4 transfers in material-containing chamber by stirrer, start stirrer 6 pairs of cement concretes to stir, simultaneously Vibration on Start-up device 12, the state of cement concrete in construction and transportation under simulating reality situation, stirs vibration after 10 minutes and stops.
(3) regulating density instrument 8, is measured the density of cement concrete, is designated as ρ by top circular hole 13
1, measured the density of bottom cement concrete by bottom circular hole 13, be designated as ρ
2.
(4) concrete disintegration degree L=| ρ is calculated
1-ρ
2|/ρ, the larger concrete disintegration of segregation degree is more obvious.Wherein ρ is with reference to concrete density.
Claims (3)
1. a cement concrete segregation degree evaluation device, is characterized in that, comprising: support component, test parts and density measure parts; Described support component comprises base (1), armstand (2), crossbeam (3), jacking gear (4), bolt (5); Described test parts comprises fixed screw (11), vibrating device (12), material-containing chamber (14); Described density measure parts comprise column (7), Density Measuring Instrument (8), slide rail (9), stationary installation (10), guide rail (15);
One end of described base (1) is fixedly installed armstand (2), and other end level is fixedly installed guide rail (15); In the upper end of armstand (2), crossbeam (3) is set by jacking gear (4), crossbeam (3) is fixed with stirrer (6); Base (1) is provided with material-containing chamber (14), between base (1) and material-containing chamber (14), is also provided with vibrating device (12);
Described guide rail (15) is provided with can vertical to slide rail (9) along guide rail (15) horizontal slip, described column (7) is fixed on slide rail (9), Density Measuring Instrument (8) is fixed on slide rail (9), and the sidewall of material-containing chamber (14) offers some circular holes (13) from top to bottom successively.
2. cement concrete segregation degree evaluation device according to claim 1, it is characterized in that, described base (1) is fixed by bolt (5) and fixed screw (11) with the bottom of vibrating device (12).
3. cement concrete segregation degree evaluation device according to claim 1, it is characterized in that, described Density Measuring Instrument (8) is fixed on slide rail (9) by stationary installation (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317053.6U CN204613058U (en) | 2015-05-15 | 2015-05-15 | A kind of cement concrete segregation degree evaluation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317053.6U CN204613058U (en) | 2015-05-15 | 2015-05-15 | A kind of cement concrete segregation degree evaluation device |
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| Publication Number | Publication Date |
|---|---|
| CN204613058U true CN204613058U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520317053.6U Expired - Fee Related CN204613058U (en) | 2015-05-15 | 2015-05-15 | A kind of cement concrete segregation degree evaluation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865156A (en) * | 2015-05-15 | 2015-08-26 | 长安大学 | Device and method for evaluating segregation degree of cement concrete |
| CN107589045A (en) * | 2017-09-07 | 2018-01-16 | 中国建筑土木建设有限公司 | Cement concrete isolates the computational methods of degree |
| CN108931626A (en) * | 2018-05-04 | 2018-12-04 | 武汉理工大学 | A kind of chutable concrete isolation rate test barrel |
-
2015
- 2015-05-15 CN CN201520317053.6U patent/CN204613058U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865156A (en) * | 2015-05-15 | 2015-08-26 | 长安大学 | Device and method for evaluating segregation degree of cement concrete |
| CN107589045A (en) * | 2017-09-07 | 2018-01-16 | 中国建筑土木建设有限公司 | Cement concrete isolates the computational methods of degree |
| CN107589045B (en) * | 2017-09-07 | 2019-09-27 | 中国建筑土木建设有限公司 | The calculation method of cement concrete isolation degree |
| CN108931626A (en) * | 2018-05-04 | 2018-12-04 | 武汉理工大学 | A kind of chutable concrete isolation rate test barrel |
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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: 20150902 Termination date: 20160515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |