CN105181527B - A kind of slump cone and Test Method For Workability of Self-compacting Concrete - Google Patents
A kind of slump cone and Test Method For Workability of Self-compacting Concrete Download PDFInfo
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- CN105181527B CN105181527B CN201510600454.7A CN201510600454A CN105181527B CN 105181527 B CN105181527 B CN 105181527B CN 201510600454 A CN201510600454 A CN 201510600454A CN 105181527 B CN105181527 B CN 105181527B
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- slump cone
- reinforcing bar
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- 239000011376 self-consolidating concrete Substances 0.000 title claims abstract description 26
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 44
- 239000004567 concrete Substances 0.000 claims abstract description 35
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000000605 extraction Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 210000002615 epidermis Anatomy 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 6
- 238000011156 evaluation Methods 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of slump cone, it includes slump cone and reinforcing bar grid, slump cone is up-thin-low-thick turriform cylinder, cylinder thickness 1.5mm, cylinder body outer wall both sides are equipped with handle, reinforcing bar grid are fixed on slump cone bottom, and the reinforcing bar is the Ribbed Bar or plain bar of diameter 12mm, and reinforcing bar clear spacing is 41mm or 59mm.It is to add mixing good autodensing concrete almixture in slump cone to Test Method For Workability of Self-compacting Concrete using above-mentioned slump cone, rapid vertical extraction slump cone is highly located to general 300mm, it was observed that concrete passes through divergence S by the state after reinforcing bar gridFMobility is evaluated, goes out a time T completelyFClearance through, Visual Stability Index method VSI evaluation education resistances are evaluated with ovality δ.The configuration of the present invention is simple is easy to use, quick；The mobility, clearance through and education resistance of self-compacting concrete can just be tested at the same time by once testing.
Description
Technical field
The invention belongs to building material field, more particularly to a kind of Workability of Self-compacting Concrete test device and test side
Method.
Background technology
At present, self-compacting concrete (Self-compacting concrete, abbreviation SCC) is that a kind of novel high-performance mixes
Solidifying soil.As its name suggests, self-compacting concrete only rely on dead weight can be by reinforcing bar filling template gap, in order to reach expected property
Can, self-compacting concrete requires very high for workability.Autodensing concrete almixture workability is divided into three aspects：Flowing
Property, clearance through and education resistance, three aspect performances have corresponding test method, and mobility generally uses slump flow test
And T50Test, clearance through are generally tested with the methods of J rings, L-type case, and education resistance uses screen analysis test and Visual Stability
The methods of index, tests.Every kind of test method all can only reflect Workability of Self-compacting Concrete in a certain respect substantially, Wu Faquan
Three aspects of the bread containing Workability of Self-compacting Concrete, it is necessary to could be to self-compaction coagulation using two or three of test method
Native workability carries out more comprehensive test and evaluation.This is not only time-consuming, laborious, but also may also cause answering for surveyed properties
Conjunction property is poor.Once three of workability of concrete aspects all meet the requirements and could realize self-compaction, during site operation by workability
Below standard concrete mix is poured, subsequent to be difficult to repair again, can seriously affect construction quality.Therefore control in advance
Workability of Self-compacting Concrete processed is particularly important, it would be highly desirable to a kind of suitable construction site application is developed, can quickly and only
It can obtain the test method of mobility, clearance through and education resistance at the same time by once testing.
The workability of the commonly used slump cone test concrete in scene, goes out from Workability of Self-compacting Concrete test philosophy
Hair, is improved slump cone, it is proposed that a kind of Test Method For Workability, for testing autodensing concrete almixture work
Property, the mobility, clearance through and education resistance of self-compacting concrete can be quickly and easily tested, is adapted to scene behaviour
Make.
The content of the invention
It is an object of the invention to provide a kind of simple in structure, slump cone that can quickly and easily be tested with
Test Method For Workability of Self-compacting Concrete.
The slump cone of the present invention includes slump cone and reinforcing bar grid, wherein, the slump cone is up-thin-low-thick tower
Shape cylinder, cylinder thickness 1.5mm, is equipped with two opposite handles, the reinforcing bar grid are fixed in the top of the outer wall both sides of cylinder
In slump cone bottom, reinforcing bar grid lower epidermis is concordant with slump cone bottom, and the steel area both ends longitudinal rib of reinforcing bar grid is same
Highly, and equidistantly arrange, the reinforcing bar is the Ribbed Bar or plain bar of diameter 12mm, and reinforcing bar clear spacing is 41mm, is fitted
For testing the workability of self-compacting concrete maximum aggregate size 20mm；Reinforcing bar clear spacing is 59mm, suitable for testing from close
The workability of real aggregate maximum particle diameter 25mm.
It is as follows to Test Method For Workability of Self-compacting Concrete using above-mentioned slump cone：
1) tablet is placed on smooth ground, checks whether level；
2) soak planar surface and dry the Free water on surface；
3) slump cone of wettability treatment is placed through on tablet, is overlapped with center 210mm diameter circles；
4) slump cone is pushed down, the good autodensing concrete almixture of mixing is slowly added to the slump in a continuous manner
In cylinder, any closely knit operation is not carried out to the mixture in slump cone, it is unnecessary then to strike off slump cone end surfaces suitable for reading
Mixture, and remove the mixture on tablet that drops；
5) rapid vertical extraction slump cone is highly located to general 300mm, and autodensing concrete almixture is in slump cone
It can be detained after lifting in cylinder a period of time, reinforcing bar grid add out cylinder along reinforcing bar direction and vertical reinforcing bar direction dissimilarity
Ovalization is oriented to afterwards；
6) record autodensing concrete almixture goes out a time T completelyF, it is measured when mixture no longer flows along reinforcing bar
Orient diameter D1With vertical reinforcing bar orient diameter D2, using divergence SFEvaluate concrete flowability；
7) concrete to detect by an unaided eye after extending is provided with the presence or absence of isolation (surrounding bleeding or aggregate accumulation etc.)
VSI values, calculate divergence SF=(D1+D2)/2, ovality δ=(D1-D2)/(D1+D2)；Using going out a time TFCommented with ovality δ
Valency concrete clearance through；Agent on crack resistance of concrete segregability is evaluated using Visual Stability VSI index methods.
The present invention has the following advantages that compared with prior art：
1st, it is simple in structure, it is easy to use, quick；
2nd, the mobility, clearance through and education resistance of self-compacting concrete can just be tested at the same time by once testing；
3rd, the reason for causing clearance through bad can be distinguished.
Brief description of the drawings
Fig. 1 is the front view of slump cone of the present invention.
Fig. 2 is the bottom view for the slump cone that reinforcing bar clear spacing of the present invention is 41mm.
Fig. 3 is the bottom view for the slump cone that reinforcing bar clear spacing of the present invention is 59mm.
Embodiment
In the slump cone schematic diagram shown in Fig. 1, slump cone 1 is up-thin-low-thick turriform cylinder, in the outer of cylinder
The top of wall both sides is equipped with two opposite handles 2, and reinforcing bar grid 3 are welded on slump cone bottom, and reinforcing bar grid lower epidermis is with collapsing
Degree cylinder bottom is concordant, and the steel area both ends longitudinal rib of reinforcing bar grid is equidistantly arranged in sustained height, and Fig. 2 is diameter 12mm's
Ribbed Bar, reinforcing bar clear spacing are 41mm, the workability suitable for testing self-compacting concrete maximum aggregate size 20mm；Fig. 3
For plain bar reinforcing bar clear spacing it is 59mm for diameter 12mm, suitable for testing self-compacting concrete maximum aggregate size 25mm
Workability.
Using above-mentioned slump cone to Test Method For Workability of Self-compacting Concrete：
1) tablet is placed on smooth ground, checks whether level；
2) soak planar surface and dry the Free water on surface；
3) slump cone of wettability treatment is placed through on tablet, is overlapped with center 210mm diameter circles；
4) slump cone is pushed down, the good autodensing concrete almixture of mixing is slowly added to the slump in a continuous manner
In cylinder, any closely knit operation is not carried out to the mixture in slump cone, it is unnecessary then to strike off slump cone end surfaces suitable for reading
Mixture, and remove the mixture on tablet that drops；
5) rapid vertical extraction slump cone is highly located to general 300mm, and autodensing concrete almixture is in slump cone
It can be detained after lifting in cylinder a period of time, reinforcing bar grid add out cylinder along reinforcing bar direction and vertical reinforcing bar direction dissimilarity
Ovalization is oriented to afterwards；
6) record autodensing concrete almixture goes out a time T completelyF, it is measured when mixture no longer flows along reinforcing bar
Orient diameter D1With vertical reinforcing bar orient diameter D2, using divergence SFEvaluate concrete flowability；
7) concrete to detect by an unaided eye after extending is with the presence or absence of isolation (surrounding bleeding or aggregate accumulation etc.), according to table
1 provides VSI values, calculates divergence SF=(D1+D2)/2, ovality δ=(D1-D2)/(D1+D2)；Using going out a time TFAnd ellipse
Spend δ evaluation concrete clearance through；Agent on crack resistance of concrete segregability is evaluated using Visual Stability VSI index methods.
1 Visual Stability Index of table (VSI) value and evaluation
According to dosages such as adjustment gel material content, sand coarse aggregate ratio size, tackifier and water-reducing agents, five kinds of different conditions are mixed
Self-compacting concrete, whereby evaluation improve slump cone feasibility.Table 2 is the match ratio of self-compacting concrete, table 3 is examination
Test test result.
Table 2 tests match ratio
3 workability test result of table
According to 3 test result of table, slump cone divergence of the present invention has apparent correlation with slump flow test experiment,
Divergence S can be usedFCharacterize the mobility of concrete.Reinforcing bar grid hinder concrete and smoothly go out cylinder, add out a time
Go out the guiding of the ovalization after cylinder with concrete.Go out a time T completelyFRepresent ability of the concrete by reinforcing bar, ovality δ is mixed
Solidifying soil goes out ovalization degree after cylinder.TFBad more sensitive for clearance through caused by mobility, δ causes for cohesiveness
Clearance through it is bad more sensitive, using TFThe clearance through of concrete is judged with δ, and can distinguish and cause gap
Passability is undesirable the reason is that illiquidity or cohesiveness deficiency.Using Visual Stability Index VSI, judge that concrete is mixed
The education resistance of compound.
Above-mentioned test verification：SFBetween 600mm~700mm, mobility is preferable；TFBetween 4s~21s, δ≤2.4%,
Clearance through is preferable；VSI≤1, education resistance is preferable, if outside this scope, needs accordingly to adjust concrete-like
State.If TFLarger, then clearance through is bad is caused by illiquidity；If δ is larger, clearance through is bad by gluing
Poly- property deficiency causes.
Claims (2)
1. a kind of slump cone, it includes slump cone and reinforcing bar grid, and the slump cone is up-thin-low-thick turriform cylinder, cylinder
Body thickness 1.5mm, two opposite handles are equipped with the top of the outer wall both sides of cylinder, it is characterised in that：The reinforcing bar grid are consolidated
Slump cone bottom is scheduled on, reinforcing bar grid lower epidermis is concordant with slump cone bottom, and the steel area both ends longitudinal rib of reinforcing bar grid is same
One height, and equidistantly arrange, the reinforcing bar is the Ribbed Bar or plain bar of diameter 12mm, and reinforcing bar clear spacing is 41mm,
Workability suitable for testing self-compacting concrete maximum aggregate size 20mm；Reinforcing bar clear spacing is 59mm, suitable for test certainly
The workability of air-free concrete maximum aggregate size 25mm.
2. the slump cone of usage right requirement 1 is to Test Method For Workability of Self-compacting Concrete, as follows：
Tablet is placed on smooth ground, checks whether level；Wetting planar surface simultaneously dries the Free water on surface；Flat
The slump cone of wettability treatment is placed through on plate, is overlapped with center 210mm diameter circles；Slump cone is pushed down, mixing is good
Autodensing concrete almixture be slowly added in a continuous manner in slump cone, not in slump cone mixture carry out
Any closely knit operation, then strikes off the unnecessary mixture of slump cone end surfaces suitable for reading, and removes the mix on tablet that drops
Thing, it is characterised in that：
1) rapid vertical extraction slump cone is highly located to general 300mm, and autodensing concrete almixture lifts in slump cone
After can be detained in cylinder a period of time, reinforcing bar grid are ellipse after cylinder along reinforcing bar direction and vertical reinforcing bar direction dissimilarity, is added out
Sphering is oriented to；
2) record autodensing concrete almixture goes out a time T completelyF, it is measured when mixture no longer flows along reinforcing bar direction
Diameter D1With vertical reinforcing bar orient diameter D2, using divergence SFEvaluate concrete flowability；
3) concrete to detect by an unaided eye after extending provides VSI values, calculates divergence S with the presence or absence of isolationF=(D1+D2)/2,
Ovality δ=(D1-D2)/(D1+D2)；Using going out a time TFConcrete clearance through is evaluated with ovality δ；It is steady using vision
Qualitative VSI index methods evaluate agent on crack resistance of concrete segregability.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510600454.7A CN105181527B (en) | 2015-09-21 | 2015-09-21 | A kind of slump cone and Test Method For Workability of Self-compacting Concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510600454.7A CN105181527B (en) | 2015-09-21 | 2015-09-21 | A kind of slump cone and Test Method For Workability of Self-compacting Concrete |
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| Publication Number | Publication Date |
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| CN105181527A CN105181527A (en) | 2015-12-23 |
| CN105181527B true CN105181527B (en) | 2018-05-01 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106841579A (en) * | 2017-04-17 | 2017-06-13 | 福建省睿翼建设有限公司 | The performance test of pervious concrete mixture, characterizing method and detection means |
| CN107422106B (en) * | 2017-08-03 | 2019-08-06 | 河海大学 | A kind of method of the anti-isolation characteristic of in situ quantitation assessment fresh concrete material |
| CN108896442B (en) * | 2018-07-02 | 2021-04-09 | 北京工业大学 | Testing device and measuring method for horizontal flow performance of concrete |
| CN109358183A (en) * | 2018-12-04 | 2019-02-19 | 毕节远大新型环保建材（集团）有限责任公司 | A kind of self-compacting concrete self-compacting ability comprehensive tester and its test method |
| CN110967473A (en) * | 2019-12-06 | 2020-04-07 | 上海建工集团股份有限公司 | Homogeneity detection device and method suitable for high-performance concrete |
| CN111157706A (en) * | 2020-01-18 | 2020-05-15 | 中铁二局第一工程有限公司 | Device for detecting working performance of concrete and using method thereof |
| CN111610123B (en) * | 2020-04-14 | 2021-04-09 | 佛山市交通科技有限公司 | Method and device for measuring fluidity improvement coefficient of regenerant |
| CN112611855B (en) * | 2020-11-16 | 2022-03-29 | 清华大学 | Self-compacting concrete working performance testing device and testing method |
| CN113063698B (en) * | 2021-03-15 | 2023-01-17 | 山东城市建设职业学院 | Quantitative evaluation method for cohesiveness of cement concrete mixture |
| CN115468872B (en) * | 2022-08-09 | 2024-09-27 | 河南大学 | Self-compacting concrete comprehensive passing performance testing device and testing method |
| CN118518540B (en) * | 2024-07-19 | 2024-10-22 | 三亚华盛水泥粉磨有限公司 | High-viscosity concrete viscosity measurement system and measurement method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3877639B2 (en) * | 2002-04-30 | 2007-02-07 | 株式会社フジタ | Test method to evaluate material separation resistance of high fluidity concrete |
| CN202330420U (en) * | 2011-11-30 | 2012-07-11 | 成都市市政工程（集团）有限责任公司 | Slump test barrel |
| CN203053818U (en) * | 2013-02-04 | 2013-07-10 | 哈尔滨学院 | Measurement instrument for working property of self-compacting concrete |
| CN203772864U (en) * | 2014-03-21 | 2014-08-13 | 许庆涛 | Portable concrete slump testing device |
| CN104459091A (en) * | 2014-12-03 | 2015-03-25 | 济南大学 | Concrete slump tester |
| CN104749349A (en) * | 2015-01-27 | 2015-07-01 | 天津大学 | Novel detachable L-shaped box |
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Inventor after: Zhao Qingxin Inventor after: Li Yalong Inventor after: Qiu Yue Inventor after: An Tongli Inventor after: He Xiaojun Inventor after: Feng Shuo Inventor before: Zhao Qingxin Inventor before: Li Yalong Inventor before: An Tongli Inventor before: He Xiaojun Inventor before: Feng Shuo |
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Effective date of registration: 20200918 Address after: 066000 3rd floor, 85 Longhai Road, Qinhuangdao Economic and Technological Development Zone, Hebei Province Patentee after: Qinhuangdao Municipal Building Materials Group Co.,Ltd. Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 438 Patentee before: Yanshan University |
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