CN104749349A - Novel detachable L-shaped box - Google Patents
Novel detachable L-shaped box Download PDFInfo
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- CN104749349A CN104749349A CN201510040647.1A CN201510040647A CN104749349A CN 104749349 A CN104749349 A CN 104749349A CN 201510040647 A CN201510040647 A CN 201510040647A CN 104749349 A CN104749349 A CN 104749349A
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- level trough
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Abstract
The invention discloses a novel detachable L-shaped box. The novel detachable L-shaped box comprises a vertical box body and a horizontal box body which are connected with a detachable horizontal tank, wherein the side surfaces of the vertical box body, the horizontal box body and the horizontal tank are respectively provided with scales; the vertical box body has the height of 0.5m-1m, has the width of 0.2m-0.5m and has the thickness of 0.15m-0.3m; the horizontal box body and the horizontal tank have the total length of 1.2m-2.5m, have the total width of 0.2m-0.5m, and have the total height of 0.1m-0.3m; the upper part of the horizontal tank is movably connected with a framed bent which is at least provided with at least two connecting holes; the connecting holes are internally provided with reinforced steel extending to the bottom of the horizontal tank; the connection part of the horizontal box body and the horizontal tank and the tail end of the horizontal tank are also provided with movable doors connected via sliding door grooves. The novel detachable L-shaped box can quantify key evaluation indexes, evaluates and measures the operation performance of fluidic concrete comprehensively and accurately, is easy to popularize and apply in actual popularization, and has the advantages of wide applicability, operation easiness, high accuracy, cost reduction and the like.
Description
Technical field
The present invention relates to building engineering field, in particular, relating to a kind of dismountable Novel L-shaped case for evaluating concrete work performance.
Background technology
In recent years, the Cracking of High Flowing Concrete being representative with high performance concrete, pump concrete etc. is widely applied in engineering.Tie up the important indicator that vigorous denseness and the slump are reflection dry concrete and normal concrete serviceability respectively, but be not suitable for Cracking of High Flowing Concrete.Reason is, compared with traditional plastic concrete, Cracking of High Flowing Concrete has very big difference in raw-material kind and proportioning.In usual Cracking of High Flowing Concrete, gel material content is comparatively large, and except cement, mix more superfine powder mineral admixture toward contact, water-cement ratio is lower, and sand coarse aggregate ratio value is larger.Under the condition compared with low water binder ratio, less water consumption, obtain larger mobility by using high efficiency water reducing agent.Due to these starting material and proportioning aspect, the slump value of Cracking of High Flowing Concrete is greater than 180mm usually, and mobility is very large, but the viscosity of mixture is comparatively large, and deformation velocity is slower.Up to the present, the serviceability of quantitative measurement concrete mix still adopts the slump index of comparative maturity, but the slump can only reflect the final deformation amount of mixture, but be difficult to reflect its deformation velocity, and deformation velocity reflects the rheological charactristicses such as the adhesion between the viscosity of mixture and tube wall, in close relations with pumpability of concrete.Therefore, for the concrete of low water binder ratio, large fluidity, reflection deformability simultaneous quantitative to evaluate its deformation velocity very important for the workability evaluating mixture all sidedly.
Except mobility, concrete serviceability also comprises stability and the property passed through.In order to the concrete serviceability of accurate evaluation and carry out quality control on construction, some scholars and researchist propose multiple new measuring method and devise some new instrumentations.Such as L-type Flow Meter method, box-shaped flow method, Orimet test method, O type and V-type funnel flow method etc., Japanese scholars Murata and Suzuki proposes inclined tube flow method, be used for measuring the mobility of mortar, Homma etc. also consider to propose a kind of J type flow device from rheology angle, measure concrete shear stress and shear rate.These measuring methods reflect concrete serviceability from different perspectives, but it is perfect not enough in the order of accuarcy of the ease for operation of the making of test unit, test, control, evaluation method and standard, concrete amount etc., and part instrument price is expensive, must by the librarian use through specialized training, do not have a ubiquity.
L-type case adopts more concrete work performance test unit at present.Its structure is simple, easy to operate, by record concrete height and visual inspection, can be used for evaluating concrete mobility and handling capacity.But, because concrete work condition is complicated, existing L-type case test only can make qualitative evaluation to concrete some index (as handling capacity), and test result lacks extensive adaptability, such as, to the evaluation and test of handling capacity, whether engineering demands only can be provided, but obviously owing to being subject to reinforcing bar distribution density in engineering, bar diameter, the impacts such as surface light circle degree, qualitative evaluation is difficult to meet the demands.On the other hand, the evaluation of L-type case to working performance of self-compacting concrete lacks persuasion.Because self-compacting concrete sand coarse aggregate ratio is high, mobility is large, can meet under conventional mix-design L-type case by performance index requirement, but obviously it there are differences on engineering property.Due to the limitation of L-type case, do not included in current specifications as concrete work performance evaluation means.
All in all, existing L-type case is simple with its structure in evaluation concrete works performance, be easy to operation and there is some superiority, but make it possess better adaptability, the more reliable science of result, still need and make key technological transformation, at present, the slump flow test also mainly being improved on slump basis for the laboratory method evaluating high performance concrete and pump concrete serviceability and expand both at home and abroad is tested and J type ring test, and be aided with existing L-type case test, but all can only qualitative analysis chutable concrete serviceability in a certain respect, and its evaluation result cannot be quantized, its adaptability is restricted simultaneously, be difficult to standardization and apply in practice, non-dismountable and the random combination of existing L-type case simultaneously, inconvenience is caused in test.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of dismountable Novel L-shaped case is provided, the present invention can monitor chutable concrete and divide the flow process planted at different reinforcing bar, and new method of testing is proposed based on this, be aided with picture catching and analytical technology, with quantized key evaluation index, evaluate and test the serviceability of chutable concrete comprehensively, exactly, be easy to apply in practice, there is the advantages such as extensive adaptability, ease for operation, accuracy be high, cost-saving.
The object of the invention is to be achieved through the following technical solutions:
A kind of dismountable Novel L-shaped case, comprise vertical casing and horizontal box, described vertical and horizontal box is connected with dismountable level trough, the side of described vertical casing, horizontal box and level trough is respectively arranged with scale, the height of described vertical casing is 0.5m-1m, width is 0.2m-0.5m, and thickness is 0.15m-0.3m; The overall length of described horizontal box and level trough is 1.2m-2.5m, and width is 0.2m-0.5m, is highly 0.1m-0.3m; The top of described level trough is connected with framed bent, described framed bent is provided with at least 2 connecting holes, be provided with the reinforcing bar stretched to bottom level trough in connecting hole, the end of described horizontal box and level trough junction and level trough is also provided with the dodge gate that slip gate slot is connected.
Described framed bent both sides are provided with for by the draw-in groove of framed bent with the clamping of level trough phase.
Described vertical casing, horizontal box, level trough and framed bent are made by organic glass.
Described level trough is provided with dismountable extension.
The length of described horizontal box is 0.1m-0.3m.
The width of described framed bent is 0.015m-0.05m, and thickness is 0.03m-0.04m.
The described draw-in groove degree of depth is at least 0.02m.
Described reinforcing bar is be with the circular formula of ribbed, light or be welded with stirrup wherein one or more to form.
Described dodge gate is higher than horizontal box and level trough.
Compared with prior art, the beneficial effect that technical scheme of the present invention is brought is:
1. vertical casing of the present invention, horizontal box and level trough side are provided with scale, and make by organic glass, by observation concrete flow process, record its not liquid level (flow surface angle) and change in flow in the same time, and then determine the crucial rheological parameter of chutable concrete, as yield stress and plastic viscosity;
2. above level trough of the present invention, framed bent is provided with the reinforcing bar stretched to bottom level trough, to make simulate effect reach best, different reinforcing bar can be tested by this setting and divide the change planted by concrete number percent shared by reinforcing bar coarse aggregate, the handling capacity of quantitative determination high-flowing concrete under different reinforcing bar density, evaluate it and build performance, there is extensive adaptability.
3. the specification of vertical casing, horizontal box and level trough in the present invention all draws through strict designing and calculating and summary, and not only taken into account test reliability and simplification but also can eliminate the impacts such as boundary effect, experimental accuracy is high.
4. the horizontal box in the present invention and all detachable and combination between level trough, be also provided with the dodge gate controlling concrete flowing and get rid of, one-piece construction is simple, is easy to operation, cost-saving.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is the side-looking structural representation of framed bent and reinforcing bar.
Fig. 3 is the plan structure schematic diagram of framed bent.
Fig. 4 to be done experiment certain the moment flow surface angle recorded by the present invention.
Fig. 5 is that different reinforcing bar divides the percent of pass planting coarse aggregate.
Reference numeral: 1-vertical casing 2-horizontal box 3-level trough 4-framed bent 5-reinforcing bar 6-dodge gate 7-dodge gate 8-draw-in groove 9-connecting hole
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1 to Figure 3, a kind of dismountable Novel L-shaped case, comprise the vertical casing 1 and horizontal box 2 that link into an integrated entity, the end of horizontal box 2 is flexibly connected with level trough 3, vertical casing 1, horizontal box 2 and level trough 3 are made by the organic glass of thickness at 0.5-1.5cm, and their side all indicates scale, convenient level change situation of following the trail of in the whole flow process of concrete, be specially every 5cm and a grid is set as major tick marks, and a scale division mark is set every 1cm; Produce the enough potential energy needed for concrete flowing for guarantee and take into account test conveniently, the height of vertical casing 1 is 0.5m-1m, and be elimination boundary effect, width is set to 0.2m-0.5m, and thickness is set to 0.15m-0.3m; For having obtained concrete flow velocity and level change situation in flow process, the overall length of described horizontal box 2 and level trough 3 has been 1.2m-2.5m, and width is 0.2m-0.5m, and be highly 0.1m-0.3m, wherein the length of horizontal box 2 is set to 0.1m-0.3m; Level trough 3 is provided with dismountable extension, and extension length is 0.5m ?1.2m, if when only testing concrete handling capacity, and the extension of level trough 3 and dismountable.
Described level trough 3 freely can arrange multiple framed bent 4, framed bent 4 is also made up of organic glass, width is 0.015m-0.05m, thickness is 0.03m-0.04m, the both sides of framed bent 4 arrange draw-in groove 8, draw-in groove 8 is for being connected together the biside plate of framed bent 4 with level trough 3, and for ensureing fixed effect, the degree of depth of draw-in groove 8 is not less than 0.02m; Framed bent 4 is also equipped with at least two connecting holes 9, is set to 3 connecting holes 9 in the present embodiment, be connected with the reinforcing bar 5 stretched to bottom level trough 3 in connecting hole 9, reinforcing bar 5 can select with ribbing, the circular formula of light, also can be welded with stirrup; Because framed bent 4 can move freely, combine and dismantle on level trough 3, therefore can the row of the different reinforcing bar 5 of accurate analog and array pitch, the concrete flowing of fluidised form and handling capacity in the quantity of different reinforcing bar 5 and stirrup situation.
The present invention is also provided with twice dodge gate, dodge gate 6 is arranged on the junction of horizontal box 2 and level trough 3, for controlling concrete flowing, another road dodge gate 7 is arranged on the end of level trough 3, for getting rid of the concrete after having tested, dodge gate 6,7, all higher than horizontal box 2 and level trough 3, level trough 3 is also respectively arranged with the slip gate slot of portable propelling door 6,7 open and close.
Fig. 4 is be to be done experiment certain the moment flow surface angle recorded by the present invention.Fig. 5 adopts the different reinforcing bars that record of the present invention to divide to plant by concrete number percent change shared by coarse aggregate before and after reinforcing bar, concrete mobility and handling capacity can quantitatively determine different ratio from the above results under.
Specific embodiment of the invention step is as follows:
(1) test of this L-type case should be carried out according to " proportioning determine-determines that reinforcing bar framed bent is arranged and concrete has been tested in the flow process-disposal of flowing-monitor of horizontal box length-vertical casing of mixing concrete-Concrete Filled-leave standstill-open dodge gate control concrete " flow process, new mixing concrete must be tested within 1 minute, time of repose was advisable with 1 minute, and whole process of the test should control to complete within 5 minutes;
(2) this L-type case should be combined with other conventional equipments, as stopwatch, digital camera, electronic scale etc., to quantize the serviceability index of chutable concrete, specifies its engineering adaptability, application performance etc.;
(3) poor by this equipment measurable flow state concrete liquid level before and after reinforcing bar, measure coarse aggregate before testing after in concrete percentage, and then its flow characteristics and handling capacity can be quantized;
(4) before adopting this testing of equipment, slump cylinder, J-shaped ring etc. can be adopted to do abbreviate evaluate to fluidised form concrete performance, and then determine L-type case horizontal length, reinforcing bar framed bent layout etc.;
(5) chutable concrete flow field change in the same time should be tested not by this equipment, by flow surface angle and level change, utilize fluid mechanics correlation formula or method for numerical simulation, inverting critical flow parameter;
(6) when testing high-flowing concrete, vertical casing inner concrete pack height should not lower than 0.75m, to ensure to obtain complete flow process;
(7) tested rear coarse aggregate to weigh, should carry out, to ensure measuring accuracy after links such as rinsing, dry;
(8), when arranging strap concrete steel muscle framed bent, stirrup should be arranged in apart from more than bottom half 5cm, and lower than the position in the middle of vertical reinforcement.
Claims (9)
1. a dismountable Novel L-shaped case, comprise vertical casing and horizontal box, it is characterized in that, described vertical and horizontal box is connected with dismountable level trough, the side of described vertical casing, horizontal box and level trough is respectively arranged with scale, the height of described vertical casing be 0.5m ?1m, width be 0.2m ?0.5m, thickness be 0.15m ?0.3m; The overall length of described horizontal box and level trough be 1.2m ?2.5m, width be 0.2m ?0.5m, be highly 0.1m ?0.3m; The top of described level trough is connected with framed bent, described framed bent is provided with at least 2 connecting holes, be provided with the reinforcing bar stretched to bottom level trough in connecting hole, the end of described horizontal box and level trough junction and level trough is also provided with the dodge gate that slip gate slot is connected.
2. the dismountable Novel L-shaped case of one according to claim 1, is characterized in that, described framed bent both sides are provided with for by the draw-in groove of framed bent with the clamping of level trough phase.
3. the dismountable Novel L-shaped case of one according to claim 1, is characterized in that, described vertical casing, horizontal box, level trough and framed bent are made by organic glass.
4. the dismountable Novel L-shaped case of the one according to claim 1 or 3, it is characterized in that, described level trough is provided with dismountable extension.
5. the dismountable Novel L-shaped case of the one according to claim 1 or 3, is characterized in that, the length of described horizontal box be 0.1m ?0.3m.
6. the dismountable Novel L-shaped case of the one according to claim 1 or 3, is characterized in that, the width of described framed bent be 0.015m ?0.05m, thickness be 0.03m ?0.04m.
7. the dismountable Novel L-shaped case of one according to claim 1, is characterized in that, the described draw-in groove degree of depth is at least 0.02m.
8. the dismountable Novel L-shaped case of one according to claim 1, is characterized in that, described reinforcing bar is be with the circular formula of ribbed, light or be welded with stirrup wherein one or more to form.
9. the dismountable Novel L-shaped case of one according to claim 1, it is characterized in that, described dodge gate is higher than horizontal box and level trough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510040647.1A CN104749349A (en) | 2015-01-27 | 2015-01-27 | Novel detachable L-shaped box |
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| CN201510040647.1A CN104749349A (en) | 2015-01-27 | 2015-01-27 | Novel detachable L-shaped box |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181527A (en) * | 2015-09-21 | 2015-12-23 | 燕山大学 | Slump cone and method for testing working performance of self-compacting concrete |
| CN106198940A (en) * | 2016-07-26 | 2016-12-07 | 四川建筑职业技术学院 | A kind of detection adaptive device and method of concrete admixture |
| CN108709978A (en) * | 2018-05-15 | 2018-10-26 | 中建西部建设湖南有限公司 | A kind of self-compacting concrete self-compacting ability comprehensive tester and its test method |
| CN112927184A (en) * | 2021-01-15 | 2021-06-08 | 重庆交通大学 | Self-compacting concrete performance detection method and device based on deep learning |
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| JPH01297529A (en) * | 1988-05-26 | 1989-11-30 | Takenaka Komuten Co Ltd | Testing device for quality of concrete |
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| CN201159736Y (en) * | 2007-12-28 | 2008-12-03 | 河海大学 | Combined appraisement device for service behavior of self-compacting concrete |
| CN101893538A (en) * | 2010-07-16 | 2010-11-24 | 中南大学 | Self-compacting concrete filling performance testing device |
| CN102507382A (en) * | 2011-11-22 | 2012-06-20 | 武汉理工大学 | Testing method for evaluating working performance of self-compacting concrete |
| CN203053818U (en) * | 2013-02-04 | 2013-07-10 | 哈尔滨学院 | Measurement instrument for working property of self-compacting concrete |
| CN204439634U (en) * | 2015-01-27 | 2015-07-01 | 天津大学 | A kind of dismountable Novel L-shaped case |
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2015
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01297529A (en) * | 1988-05-26 | 1989-11-30 | Takenaka Komuten Co Ltd | Testing device for quality of concrete |
| JPH02208564A (en) * | 1989-02-08 | 1990-08-20 | Fujita Corp | Method and apparatus for measuring workability of concrete |
| CN200979545Y (en) * | 2006-11-10 | 2007-11-21 | 北京工业大学 | A multifunctional self-compacting concrete workability detector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181527A (en) * | 2015-09-21 | 2015-12-23 | 燕山大学 | Slump cone and method for testing working performance of self-compacting concrete |
| CN106198940A (en) * | 2016-07-26 | 2016-12-07 | 四川建筑职业技术学院 | A kind of detection adaptive device and method of concrete admixture |
| CN108709978A (en) * | 2018-05-15 | 2018-10-26 | 中建西部建设湖南有限公司 | A kind of self-compacting concrete self-compacting ability comprehensive tester and its test method |
| CN108709978B (en) * | 2018-05-15 | 2021-06-18 | 中建西部建设湖南有限公司 | Self-compacting concrete self-compacting performance comprehensive tester and testing method thereof |
| CN112927184A (en) * | 2021-01-15 | 2021-06-08 | 重庆交通大学 | Self-compacting concrete performance detection method and device based on deep learning |
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Application publication date: 20150701 |