CN103926392A - Testing device for working performance of self-compacting concrete - Google Patents
Testing device for working performance of self-compacting concrete Download PDFInfo
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- CN103926392A CN103926392A CN201410147987.XA CN201410147987A CN103926392A CN 103926392 A CN103926392 A CN 103926392A CN 201410147987 A CN201410147987 A CN 201410147987A CN 103926392 A CN103926392 A CN 103926392A
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Abstract
The invention relates to a testing device for a working performance of self-compacting concrete. The testing device comprises a first vertical stand barrel, a horizontal barrel and a second vertical stand barrel, wherein the first vertical stand barrel, the horizontal barrel and the second vertical stand barrel are connected from front to back and are internally communicated with one another; the height of the first vertical stand barrel is higher than that of the second vertical stand barrel; a movable pull door is arranged at the inner side of the first vertical stand barrel; when the movable pull door falls down, the communication between the first vertical stand barrel and the horizontal barrel can be stopped; two steel bars which are distributed at an interval are arranged on a bottom plate of the horizontal barrel. The testing device for the working performance of the self-compacting concrete has the beneficial effects that the mobility, the filling capability and the capability of penetrating through the steel bars of the self-compacting concrete are all considered; the device considers the steering mobility of the self-compacting concrete and can comprehensively evaluate the working performance of the self-compacting concrete; the testing device is simple in structure and convenient to operate.
Description
Technical field
The present invention relates to concrete work performance field tests, especially a kind of working performance of self-compacting concrete proving installation.
Background technology
Traditional concrete engineering construction can produce serious noise pollution because of plugging and pounding of vibrating head, normal work and the rest of impact construction surrounding resident; On the other hand, along with social development, the span of xoncrete structure is increasing, and its quantity of reinforcement increases greatly, causes bar spacing to dwindle, and has now been difficult to utilize vibrating head to pass bar-mat reinforcement and has plugged and pounded.Under background as above, self-compacting concrete arises at the historic moment.Self-compacting concrete claims again without vibration concrete, self-leveling concrete, is a kind ofly under self gravitation, can flow and without vibrating, make template filling secret room and wrap up the high performance concrete of reinforcing bar.The appearance of self-compacting concrete is considered in concrete works, to have a revolutionary much progress most in recent decades, and it has improved concrete construction environment, has reduced labor cost, has improved operating efficiency.
Self-compacting concrete is that the self-compaction effect that reaches good requires to have higher serviceability, i.e. good mobility, fillibility, education resistance and penetrate the ability of reinforcing bar.At present, for the serviceability evaluation of self-compacting concrete, proposed some proving installations, these evaluation methods all respectively have feature, but the serviceability of the self-compacting concrete characterizing is more single, can not thoroughly evaluating.If these proving installations are integrated to utilization, certainly exist the hysteresis of test duration, thereby cause the accuracy that fresh concrete serviceability is evaluated to reduce, and operation is too loaded down with trivial details.Therefore, in the urgent need to a kind of new working performance of self-compacting concrete proving installation, so that comprehensive evaluation is newly mixed the serviceability of self-compacting concrete.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, a kind of mobility, fillibility of energy comprehensive evaluation self-compacting concrete is provided and penetrates reinforcing bar ability working performance of self-compacting concrete proving installation.
The present invention solves the technical scheme that its technical matters adopts: this working performance of self-compacting concrete proving installation, comprise the first vertical vertical tube, level cylinder and the second vertical vertical tube, before and after the first vertical vertical tube, level cylinder and the second vertical vertical tube, be connected and internal communication, the height of the first vertical vertical tube is higher than the second vertical vertical tube, the first vertical vertical tube inner side is provided with an active pulling-door, and when active pulling-door falls, can block being communicated with between the first vertical vertical tube and level cylinder, on horizontal tube end plate, be provided with the reinforcing bar that two spacing distribute.
As preferably, the movable cooperation of groove of described active pulling-door and the first vertical vertical tube both sides, and active pulling-door is provided with a handles.
As preferably, this proving installation integral width is 200mm, and wherein the first vertical vertical tube height is that 600mm, length are 150mm, and level cylinder is highly 200mm for 100mm, length, and the second vertical vertical tube height is that 300mm, length are 150mm.
As preferably, the described first vertical vertical tube, level cylinder and the second vertical vertical tube wall thickness 10mm, active pulling-door is thick is 5mm.
As preferably, described bar diameter is 13mm, and spacing is 58mm.
As preferably, the described first vertical vertical tube, level cylinder and the second vertical vertical tube adopt organic glass or steel plate or other rigid materials.
Inventing useful effect is: the present invention has taken into account mobility, the fillibility of self-compacting concrete and penetrated the ability of reinforcing bar, and this device has been considered the mobility that turns to of self-compacting concrete, the serviceability of energy comprehensive evaluation self-compacting concrete, simple in structure, easy to operate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Description of reference numerals: the first vertical vertical tube 1, active pulling-door 2, reinforcing bar 3, the vertical vertical tube 5 of level cylinder 4, the second.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Embodiment: as shown in Figure 1, the present invention is a kind of working performance of self-compacting concrete proving installation, comprise the first vertical vertical tube 1, level cylinder 4 and the second vertical vertical tube 5, the first vertical vertical tube 1, level cylinder 4 and the second vertical vertical tube 5 front and back are connected and internal communication, the height of the first vertical vertical tube 1 is higher than the second vertical vertical tube 5, the first vertical vertical tube 1 inner side is provided with an active pulling-door 2, and when active pulling-door 2 falls, can block being communicated with between the first vertical vertical tube 1 and level cylinder 4.
Its first vertical vertical tube 1, level cylinder the 4, second vertical vertical tube 5 all select the poly (methyl methacrylate) plate that 10mm is thick to be formed by connecting with screw.Proving installation integral width is 200mm, and wherein the first vertical vertical tube 1 is highly for 600mm, length are 150mm, and level cylinder 4 is highly 200mm for 100mm, length, and the second vertical vertical tube 5 is highly for 300mm, length are 150mm.Active pulling-door 2 is selected the thick poly (methyl methacrylate) plate of 5mm, moves about in the poly (methyl methacrylate) plate groove of the first vertical vertical tube 1 both sides, and active pulling-door 2 is connected by screw a metal handle.In the first vertical vertical tube 1 with the intersection of level cylinder 4, the outside of active pulling-door 2, on the base plate of level cylinder 4, take is threaded is equipped with the reinforcing bar that two diameters are 13mm, bar spacing is 58mm.
Using method of the present invention is: fall active pulling-door 2, in the first vertical vertical tube 1, fill up concrete, mention active pulling-door 2, concrete is flowed through after level cylinder 4 and is entered the second vertical vertical tube 5 through reinforcing bar 3, measures respectively in first vertical vertical tube the 1, second vertical vertical tube 5 concrete surface apart from the distance L of vertical tube coboundary after stablizing with rule
1, L
2, with L=300-L
1+ L
2the serviceability of evaluating self-compacting concrete, L value is less shows that the serviceability of self-compacting concrete is more excellent, can judge that the serviceability of self-compacting concrete reaches good when L≤40mm.
In this example, cement used is PO42.5 Portland cement; Flyash is I level flyash; The modulus of fineness of sand is 2.8, river sand; The maximum particle diameter of stone is 20mm; Water reducer is high-efficiency water-reducing agent of poly-carboxylic acid, solid content 40%; Retardant is sodium tetraborate; The match ratio of self-compacting concrete is as shown in the table.Use apparatus of the present invention to record L for 30mm, the serviceability of therefore joining self-compacting concrete is good.
The match ratio of self-compacting concrete (unit: Kg/m
3)
| Cement | Flyash | Sand | Stone | Water consumption | Water reducer | Retardant |
| 385 | 165 | 819 | 887 | 143 | 3.96 | 0.33 |
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (6)
1. a working performance of self-compacting concrete proving installation, comprise the first vertical vertical tube (1), level cylinder (4) and the second vertical vertical tube (5), it is characterized in that: the first vertical vertical tube (1), level cylinder (4) is connected and internal communication with before and after the second vertical vertical tube (5), the height of the first vertical vertical tube (1) is higher than the second vertical vertical tube (5), the first vertical vertical tube (1) inner side is provided with an active pulling-door (2), and when falling, can block active pulling-door (2) being communicated with between the first vertical vertical tube (1) and level cylinder (4), on level cylinder (4) base plate, be provided with the reinforcing bar (3) that two spacing distribute.
2. working performance of self-compacting concrete proving installation according to claim 1, is characterized in that: described active pulling-door (2) coordinates with the groove activity of the first vertical vertical tube (1) both sides, and active pulling-door (2) is provided with a handles.
3. working performance of self-compacting concrete proving installation according to claim 1 and 2, it is characterized in that: this proving installation integral width is 200mm, wherein the first vertical vertical tube (1) is highly for 600mm, length are 150mm, level cylinder (4) is highly 200mm for 100mm, length, and the second vertical vertical tube (5) is highly for 300mm, length are 150mm.
4. working performance of self-compacting concrete proving installation according to claim 3, is characterized in that: the described first vertical vertical tube (1), level cylinder (4) and the second vertical vertical tube (5) wall thickness 10mm, active pulling-door (2) is thick is 5mm.
5. working performance of self-compacting concrete proving installation according to claim 3, is characterized in that: described reinforcing bar (3) diameter is 13mm, and spacing is 58mm.
6. working performance of self-compacting concrete proving installation according to claim 1, is characterized in that: the described first vertical vertical tube (1), level cylinder (4) and the second vertical vertical tube (5) adopt organic glass or steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147987.XA CN103926392A (en) | 2014-04-14 | 2014-04-14 | Testing device for working performance of self-compacting concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147987.XA CN103926392A (en) | 2014-04-14 | 2014-04-14 | Testing device for working performance of self-compacting concrete |
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| CN103926392A true CN103926392A (en) | 2014-07-16 |
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| CN201410147987.XA Pending CN103926392A (en) | 2014-04-14 | 2014-04-14 | Testing device for working performance of self-compacting concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359794A (en) * | 2014-11-20 | 2015-02-18 | 中国铁道科学研究院铁道建筑研究所 | Method and device for evaluating static stability of self-compacting concrete of closed die cavity of plate-type ballastless track |
| CN104360047A (en) * | 2014-11-20 | 2015-02-18 | 中国铁道科学研究院铁道建筑研究所 | Method and device for evaluating dynamic stability of self-compacting concrete of closed die cavity of plate-type ballastless track |
| CN105606496A (en) * | 2015-12-11 | 2016-05-25 | 东北大学 | Testing apparatus and testing method for simulating outburst of loose particles |
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| CN2557951Y (en) * | 2002-07-25 | 2003-06-25 | 上海隧道工程股份有限公司 | Self-densing high-performance concrete investigatino instrument |
| CN200979545Y (en) * | 2006-11-10 | 2007-11-21 | 北京工业大学 | A multifunctional self-compacting concrete workability detector |
| CN203798806U (en) * | 2014-04-14 | 2014-08-27 | 浙江建设职业技术学院 | Self-compacting concrete working performance testing device |
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| CN2557951Y (en) * | 2002-07-25 | 2003-06-25 | 上海隧道工程股份有限公司 | Self-densing high-performance concrete investigatino instrument |
| 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 |
|---|---|---|---|---|
| CN104359794A (en) * | 2014-11-20 | 2015-02-18 | 中国铁道科学研究院铁道建筑研究所 | Method and device for evaluating static stability of self-compacting concrete of closed die cavity of plate-type ballastless track |
| CN104360047A (en) * | 2014-11-20 | 2015-02-18 | 中国铁道科学研究院铁道建筑研究所 | Method and device for evaluating dynamic stability of self-compacting concrete of closed die cavity of plate-type ballastless track |
| CN104360047B (en) * | 2014-11-20 | 2016-06-29 | 中国铁道科学研究院铁道建筑研究所 | A kind of plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology and device |
| CN105606496A (en) * | 2015-12-11 | 2016-05-25 | 东北大学 | Testing apparatus and testing method for simulating outburst of loose particles |
| CN105606496B (en) * | 2015-12-11 | 2019-02-05 | 东北大学 | A kind of simulation discrete particles burst the experimental rig and test method of process |
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Application publication date: 20140716 |