CN207894779U - Measuring device for evaluating lazy flow and high viscosity concrete viscosity - Google Patents

Measuring device for evaluating lazy flow and high viscosity concrete viscosity Download PDF

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Publication number
CN207894779U
CN207894779U CN201820243209.4U CN201820243209U CN207894779U CN 207894779 U CN207894779 U CN 207894779U CN 201820243209 U CN201820243209 U CN 201820243209U CN 207894779 U CN207894779 U CN 207894779U
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China
Prior art keywords
hopper
concrete
hush panel
diameter
viscosity
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Expired - Fee Related
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CN201820243209.4U
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Chinese (zh)
Inventor
张国良
于会泳
宋卫峰
孙志刚
范鹤飞
李辉波
张军
余晓亮
文卓
王珑翰
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China Railway First Engineering Group Co Ltd
Tianjin Construction Engineering Co Ltd of China Railway First Engineering Group Co Ltd
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China Railway First Engineering Group Co Ltd
Tianjin Construction Engineering Co Ltd of China Railway First Engineering Group Co Ltd
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Priority to CN201820243209.4U priority Critical patent/CN207894779U/en
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Publication of CN207894779U publication Critical patent/CN207894779U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of for evaluating the measuring device of lazy flow and highly viscous concrete viscosity, including shake table, places hopper base on a vibration table, is fixed on hopper base and the hopper with hush panel;The shake table that the hopper base is fitted with magnet securely adsorbs, and with hopper with the frequencies such as shake table, etc. amplitude vibrations so that concrete under hopper mouth flow out;The hopper base is the hopper base that selection, structure and size all have particularity;The hopper with hush panel is the hopper with certain height and lower port diameter, and the hopper is for holding concrete to be measured.The utility model uses makes concrete mouth under hopper flow out hopper absorption on a vibration table, by shake table vibration, record stream wastes the time of expense, viscosity is evaluated with flow time, solves the problems, such as that existing inversion slump cone method and rheometer can not detect high viscosity, lazy flow concrete viscosity.

Description

Measuring device for evaluating lazy flow and high viscosity concrete viscosity
Technical field
The utility model belongs to concrete construction technical field, more particularly to a kind of for evaluating lazy flow and height The measuring device of the concrete viscosity of viscosity.
Background technology
Lazy flow and highly viscous concrete are frequently used for making prefabricated shield duct piece, and prefabricated shield duct piece is used for subway The construction of equal subterranean tunnels, circular subterranean tunnel are generally made of the prefabricated shield segment assembling of multi-disc arc, as shown in Figure 1, Figure 2 It is shown.
The prefabricated shield duct piece concrete that concrete is lazy flow for making subterranean tunnel, glue are relatively low (water-cement ratio:Ratio per cubic meter of concrete water consumption and all gel material contents), generally between 0.30~0.35, this Kind of lazy flow, low water binder ratio concrete viscosity it is very high.Excessively high viscosity can be close to vibrating in concrete placement Real, any excess concrete strikes off, surface receives the processes such as light and causes difficulty, and the section of jurisdiction voids and pits produced is serious, and presentation quality is poor. It is therefore desirable to have a kind of specifically for lazy flow, the device for measuring viscosity of high viscosity concrete and method.
It is used in order to facilitate construction site, someone, which has developed, is inverted slump cone method, and inverted slump cone size is suitable for reading Diameter 200mm, lower mouth 100mm, high 300mm, inverted slump cone are placed on holder.Concrete is packed into when use and is inverted Slump cone in, allow it to be fallen by free gravity, its viscosity evaluated with flow time.This instrument is although simple in structure, But it is only applicable to survey the viscosity of high-flowing concrete of the slump more than 120mm, prefabricated shield duct piece concrete slump Generally less than 120mm, poor mobile performance, viscosity is big, can not naturally be flowed out from inverted slump cone, cannot use this method into Row evaluation.
In addition, commonplace application both at home and abroad mainly has coaxial rotating viscosimeter and vane type rheometer.
Coaxial rotating viscosimeter is made of inner barrel and outer barrel.It is filled with viscous fluid between two coaxial cylinders.Mainly have Two types:One kind is that inner cylinder is rotated with certain rotating speed, the torque acted on outer barrel or inner cylinder is measured with sensor, referred to as Inner-rotary type or upper rotating viscosmeter.Another kind of is so that outer barrel is rotated, and measure the torque acted on inner cylinder axis with sensor, is claimed For evolute or downside rotation type electro viscosmeter.It is identical in conditions such as rotary speeies, this torque by with the viscosity of fluid and Variation, viscosity is bigger, and torque is bigger, therefore measure torque it is known that fluid viscosity.
Vane type rheometer is inserted into there are one H-type rotary blade in fresh concrete, and is moved in a circle.It was testing Cheng Zhong, impeller revolution and rotation are carried out at the same time.Revolution turns around the H-type of speed II certainly around the main shaft rotation of the rheometer of rotating speed I The axis of axis rotates, and medium velocity II is about 2.20 times of speed I.A load cell measures the reaction torque of impeller simultaneously, And revolution counter measures the rotating speed of impeller.
To sum up, three of the above conventional method can more easily detect the viscosity of high-flowing concrete, but to low stream The section of jurisdiction concrete of dynamic property is helpless, and its is complicated, expensive.
Utility model content
The utility model proposes a kind of measuring devices for evaluating lazy flow and highly viscous concrete viscosity, use To solve the problems, such as that existing inversion slump cone method and rheometer can not detect high viscosity, lazy flow concrete viscosity.
A kind of measuring device for evaluating lazy flow and highly viscous concrete viscosity, its main feature is that:Including vibration Platform places hopper base on a vibration table, is fixed on hopper base and the hopper with hush panel;The hopper base The shake table for being fitted with magnet securely adsorbs, and with hopper with the frequencies such as shake table, etc. amplitude vibrations so that concrete is from material The lower mouth outflow of bucket;The hopper base is the hopper base that selection, structure and size all have particularity;Described carries envelope The hopper of oralia is the hopper with certain height and lower port diameter, and the hopper is for holding concrete to be measured.
The hopper base include circumferentially equally distributed four rack rods, be fixed in four branch and erect It is the top annulus for being used to support hopper at the top of bar, tilting close to hopper lower end extend to rack rod from hopper outer wall four Cross bar, close to the connection of rack rod lower end four of adjacent stent upright bar just set cross bar;The both ends of the tilting cross bar respectively with Rack rod and hopper are affixed, and the bottom end of the rack rod is equipped with the holder angled seat that nut is reconciled with height, convenient for being vibrated Platform absorption is secured;The rack rod is long 760mm, the hollow steel pipe of outer diameter 20mm, wall thickness 1.5mm, lower end attaching nut;Institute Top annulus outer diameter 400mm is stated, internal diameter 167mm is made of 3mm steel plates;The tilting cross bar is long 133mm, outer diameter 10mm Hollow steel pipe, wall thickness 1.5mm;The cross bar of just setting is long 260mm, the hollow steel pipe of outer diameter 10mm, wall thickness 1.5mm;It is described Nut be internal diameter 12mm, high 10mm steel hex nut;The holder pedestal by diameter 12mm, long 50mm steel screw rod It is formed with the round steel plate washer of diameter 60mm, thickness 3mm.
The hopper with hush panel further include along the circumferentially disposed lower part annulus of mouth under hopper, lower part annulus it is interior Diameter is equal with hopper lower port diameter, and lower part annulus lower surface is glued with the rectangular hush panel for sealing hopper lower port, institute It states rectangular hush panel to be mounted on the annulus of lower part with two hush panel hinges, for blocking mouth under hopper, rectangular hush panel hinge Offside installs bolt, and bolt is for inserting firmly hush panel so that the concrete in hopper cannot flow out, bolt using screw with Lower part annulus connection;The hopper with hush panel is made of thickness for 1.5mm steel plates are affixed, back cut diameter 200mm, lower mouth Diameter 80mm, high 360mm;The rectangular hush panel is process by the square steel plate of 3mm thickness, length of side 100mm;Under described Portion annulus outer diameter 180mm, internal diameter 80mm are made of 3mm steel plates;The bolt handle portion is the solid core steel of outer diameter 7mm Round bar, rest part are the steel plate of thickness 3mm.
The shake table is to meet GB/T25650-2010《Concrete vibrating stand》The general vibratory concrete in laboratory Platform, vibration frequency 50Hz, amplitude 0.5mm, shake table be equipped with magnet, the holder equipped with hopper can securely be adsorbed, be allowed to The frequencies such as shake table, etc. amplitude vibrations.
The utility model has the advantages of
1, the utility model, which uses, puts hopper on a vibration table, by shake table vibration so that high viscosity, lazy flow Prefabricated shield duct piece concrete under hopper mouth flow out, record flow time, and then realize and make to its viscosity and accurately commenting Valence, the concrete production section of jurisdiction of guidance selection low viscosity avoid due to concrete is excessively viscous in the concrete placement of section of jurisdiction Vibration compacting, any excess concrete strikes off, surface receives the processes such as light and causes difficulty, reduce the voids and pits quantity on section of jurisdiction surface, Improve the Surface Quality of Concrete after appearance mix.
2, the utility model, which has used, meets GB/T25650-2010《Concrete vibrating stand》The general concrete in laboratory Shake table all has the hopper base and hopper of particularity by using selection, structure and size, and it is general mixed to compensate for laboratory Solidifying soil vibration platform cannot carry out the defect of personalized oscillation intensity adjustment, to considerably reduce equipment purchase cost.
3, the utility model experimental rig is sensitive to concrete viscosity reaction, simple in structure, easy to operate, has and pushes away well Wide value.
Description of the drawings
Fig. 1 is prefabricated shield duct piece application effect figure;
Fig. 2 is prefabricated shield duct piece shape design sketch;
Fig. 3 is the utility model concrete viscosity measuring device main view dimensional drawing;
Fig. 4 is the utility model concrete viscosity measuring device three-dimensional effect diagram;
Fig. 5 is the utility model hopper base top annulus vertical view;
Fig. 6 is hopper stereogram of the utility model with sealing version;
Fig. 7 is the utility model hopper front view dimensional drawing;
Fig. 8 is that the utility model lower part annulus overlooks dimensional drawing;
Fig. 9 is the rectangular hush panel of the utility model and bolt scale diagrams;
In figure, 1:Shake table;2:Vibration rack;3:Hopper;2-1:Rack rod;2-2:Top annulus;2-3:Tilting cross Bar;2-4:Just set cross bar;2-5:Nut;2-6:Holder pedestal;3:Hopper;3-1:Lower part annulus;3-2:Rectangular hush panel;3-3: Bolt;3-4:Hush panel hinge.
Specific implementation mode
Further utility model content is explained below in conjunction with the accompanying drawings:
The design principle of the utility model:
It includes three parts that the utility model, which is used to evaluate lazy flow and the measuring device of high viscosity concrete viscosity,:It shakes Dynamic platform, hopper base, hopper.Since the shake table uses general shake table, the oscillation intensity and amplitude of the general shake table It cannot be changed according to individual demand to be further adapted for the detection demand of the utility model, therefore, the utility model uses The material particularity of hopper and hopper base, structural particularity, size particularity go to make up the unitized deficiency of shake table, to So that the utility model measuring device remains the sensibility and accuracy of height, to reach testing goal.It is specific as follows:
1, the hopper lower port diameter, which is 80mm, has particularity.Hopper diameter is too small, and concrete is not easy to flow out, diameter Excessive, then concrete outflow is excessively rapid, can all influence sensibility and accuracy of the instrument to concrete viscosity;Hopper is high 360mm has particularity, and height is too small, and charge is very little, and flow time can be very short, and height is excessive, and charge is too big, shake table The vibration severity relative deficiency of offer.This can all influence sensibility and accuracy of the instrument to concrete viscosity.
2, the selection of the hopper base, structure and size all have particularity.The particularity of the selection includes whether For hollow pipe and the thickness of plank;The particularity of the structure includes the quantity of supporting rod and the distribution of supporting rod and branch Strut be it is tilting support or just set support etc.;The particularity of the size includes the height of hopper base, width, top annulus Size;It is because hopper base is in addition to the function of support hopper that the above three classes particularity, which is arranged, and there are one important roles It is by the conduct vibrations feed hopper of shake table, the efficiency that the selection of holder, structure and size transmit the vibrational energy of shake table has Have a decisive action, in the utility model the design of holder the sensibility and accuracy of a whole set of instrument are had a major impact.
Based on the above design principle, the utility model devises a kind of for evaluating lazy flow and highly viscous concrete The measuring device of viscosity.
As shown in figure 3, a kind of measuring device for evaluating lazy flow and highly viscous concrete viscosity, feature exists In:Including shake table 1, places hopper base 2 on a vibration table, is fixed on hopper base and hopper 3 with hush panel; The shake table that the hopper base 2 is fitted with magnet securely adsorbs, and with hopper with the frequencies such as shake table, etc. amplitudes shake It is dynamic so that concrete is flowed out from 3 times mouths of hopper;The hopper base is the hopper that selection, structure and size all have particularity Holder;The hopper with hush panel is the hopper with certain height and lower port diameter, and the hopper is to be measured for holding Concrete.
As shown in figure 4, the hopper base 2 includes circumferentially equally distributed four rack rod 2-1, solid It is connected on the top annulus 2-2 for being used to support hopper at the top of four rack rod 2-1, extends from hopper outer wall close to hopper lower end Four that adjacent stent upright bar is connected to four tilting cross bar 2-3 of rack rod, close to rack rod lower end are just setting cross bar 2- 4;The both ends of the tilting cross bar 2-3 are affixed with rack rod and hopper respectively, and the bottom end of the rack rod 2-1 is equipped with band height Degree reconciles the holder angled seat 2-6 of nut 2-5, secured convenient for being adsorbed by shake table;As shown in figure 3, the rack rod is length 760mm, the hollow steel pipe of outer diameter 20mm, wall thickness 1.5mm, lower end attaching nut;As shown in figure 5, the top annulus outer diameter 400mm, internal diameter 167mm are made of 3mm steel plates;The tilting cross bar is long 133mm, the hollow steel pipe of outer diameter 10mm, wall thickness 1.5mm;The cross bar of just setting is long 260mm, the hollow steel pipe of outer diameter 10mm, wall thickness 1.5mm;The nut is internal diameter The steel hex nut of 12mm, high 10mm;The holder pedestal by diameter 12mm, the steel screw rod of long 50mm and diameter 60mm, The round steel plate washer of thickness 3mm forms.
As shown in Fig. 6, Fig. 7, Fig. 8, Fig. 9, the hopper 2 with hush panel further includes circumferentially disposed along mouth under hopper Lower part annulus 3-1, the internal diameter 80 of lower part annulus 3-1 is equal with hopper lower port diameter 80, as shown in fig. 6, lower part annulus 3-1 Lower surface is glued with the rectangular hush panel 3-2 for sealing hopper lower port, and the rectangular hush panel 3-2 is closed with two hush panels Page 3-4 is mounted on 3-1 on the annulus of lower part, and for blocking mouth under hopper, hush panel hinge 3-4 offsides install bolt 3-3, bolt 3- 3 for inserting firmly rectangular hush panel 3-2 so that the concrete in hopper cannot flow out, and bolt 3-3 is justified using screw and lower part Ring 3-1 connections;As shown in fig. 7, the hopper 2 with hush panel is made of thickness for 1.5mm steel plates are affixed, back cut diameter 200mm, lower port diameter 80mm, high 360mm;As shown in figure 9, the rectangular hush panel by 3mm thickness square steel plate processing and At length of side 100mm;As shown in figure 8, the lower part annulus 3-1 outer diameter 180mm, internal diameter 80mm are made of 3mm steel plates;Institute The solid core steel round bar that bolt 3-3 handle portions are outer diameter 7mm is stated, bolt decreased food is 70mm, and fork length is 50mm, Rest part is the steel plate of thickness 3mm.
As shown in Figure 3, Figure 4, the shake table 1 is to meet GB/T25650-2010《Concrete vibrating stand》Laboratory General concrete vibrating stand, vibration frequency 50Hz, amplitude 0.5mm, shake table are equipped with magnet, can be by the holder jail equipped with hopper Gu absorption, be allowed to the frequencies such as shake table, etc. amplitude vibrations.
The present embodiment implementation process is as follows:
Step 1: the holder with hopper is put on a vibration table, holder is adsorbed secured, adjustment holder by shake table internal magnet Screw rod on pedestal, makes support level.
Step 2: the hush panel of mouth opening state under hopper is lifted up along hush panel hinge shaft, bolt is used in combination It inserts firmly, hopper inner wall is soaked with wet towel, by three layers of loading hopper of concrete to be measured point, one layer is often installed, with round end rod iron It plugs and pounds for several times, installs third layer, concrete extra on hopper is struck off and smoothed out with spatula.
Step 3: opening shake table, while bolt is pulled out, mouth baffle under hopper is opened, vibration is recorded in using stopwatch Concrete to be measured flows the empty required time out of hopper under state, is accurate to the second.
Step 4: evaluating testing result.
The round end rod iron of the step 2 is the round end rod iron of a diameter of 16mm, and described plug and pound is 10 times for several times.
The step 4 evaluates testing result, and evaluation criterion is:
(1) concrete viscosity grade is divided into level Four:I grades of viscosity are minimum, are sequentially increased backward;For prefabricated shield duct piece With concrete, I grades of viscosity is best, and followed by II grades, viscosity, which is III level and IV grades of concrete, to be used;
(2) assay method of concrete viscosity grade is evaluated:
T(S)<It is I grades when 40;It is II grades when 40≤T (S) < 50;It is III level when 50≤T (S) < 60;When T (S) >=60 It is IV grades.
It is emphasized that embodiment described in the utility model is illustrative, without being restrictive, therefore this reality With the novel embodiment including being not limited to described in specific implementation mode.

Claims (4)

1. a kind of measuring device for evaluating lazy flow and highly viscous concrete viscosity, it is characterised in that:Including vibration Platform places hopper base on a vibration table, is fixed on hopper base and the hopper with hush panel;The hopper base The shake table for being fitted with magnet securely adsorbs, and with hopper with the frequencies such as shake table, etc. amplitude vibrations so that concrete is from material The lower mouth outflow of bucket;The hopper base is the hopper base that selection, structure and size all have particularity;Described carries envelope The hopper of oralia is the hopper with certain height and lower port diameter, and the hopper is for holding concrete to be measured.
2. a kind of measuring device for evaluating lazy flow and highly viscous concrete viscosity according to claim 1, It is characterized in that:The hopper base include circumferentially equally distributed four rack rods, be fixed in four holders The top annulus for being used to support hopper at the top of upright bar extends to four of rack rod tiltedly close to hopper lower end from hopper outer wall Set cross bar, close to the connection of rack rod lower end four of adjacent stent upright bar just set cross bar;Distinguish at the both ends of the tilting cross bar Affixed with rack rod and hopper, the bottom end of the rack rod is equipped with the holder angled seat that nut is reconciled with height, convenient for being shaken Dynamic platform absorption is secured;The rack rod is long 760mm, the hollow steel pipe of outer diameter 20mm, wall thickness 1.5mm, lower end attaching nut; The top annulus outer diameter 400mm, internal diameter 167mm are made of 3mm steel plates;The tilting cross bar is long 133mm, outer diameter The hollow steel pipe of 10mm, wall thickness 1.5mm;The cross bar of just setting is long 260mm, the hollow steel pipe of outer diameter 10mm, wall thickness 1.5mm; The nut is the steel hex nut of internal diameter 12mm, high 10mm;The holder pedestal by diameter 12mm, long 50mm steel The round steel plate washer composition of screw rod and diameter 60mm, thickness 3mm.
3. a kind of measuring device for evaluating lazy flow and highly viscous concrete viscosity according to claim 1, It is characterized in that:The hopper with hush panel further include along the circumferentially disposed lower part annulus of mouth under hopper, lower part annulus Internal diameter is equal with hopper lower port diameter, and lower part annulus lower surface is glued with the rectangular hush panel for sealing hopper lower port, The rectangular hush panel is mounted on two hinges on the annulus of lower part, for blocking mouth under hopper, rectangular hush panel hinge offside Bolt is installed, bolt is for inserting firmly hush panel so that the concrete in hopper cannot flow out, and bolt uses screw and lower part Annulus connects;The hopper with hush panel is made of thickness for 1.5mm steel plates are affixed, back cut diameter 200mm, lower port diameter 80mm, high 360mm;The rectangular hush panel is process by the square steel plate of 3mm thickness, and the length of side is 100 mm;The lower part Annulus outer diameter 180mm, internal diameter 80mm are made of 3mm steel plates;The solid core steel that the bolt handle portion is outer diameter 7mm is justified Bar, rest part are the steel plate of thickness 3mm.
4. a kind of measuring device for evaluating lazy flow and highly viscous concrete viscosity according to claim 1, It is characterized in that:The shake table is to meet GB/T25650-2010《Concrete vibrating stand》The general vibratory concrete in laboratory Platform, vibration frequency be 50 Hz, amplitude 0.5mm, shake table be equipped with magnet, the holder equipped with hopper can securely be adsorbed, be allowed to The frequencies such as shake table, etc. amplitude vibrations.
CN201820243209.4U 2018-02-10 2018-02-10 Measuring device for evaluating lazy flow and high viscosity concrete viscosity Expired - Fee Related CN207894779U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108279186A (en) * 2018-02-10 2018-07-13 中铁局集团有限公司 Measuring device and method for evaluating lazy flow and high viscosity concrete viscosity
CN112369441A (en) * 2020-10-22 2021-02-19 赣州市倞华菲尔雪食品有限公司 Stirrer for cake production and operation method
WO2021238308A1 (en) * 2020-05-28 2021-12-02 中交一公局集团有限公司 Inspection mold, vibration inspection apparatus, and asphalt mixture fluidity measurement method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108279186A (en) * 2018-02-10 2018-07-13 中铁局集团有限公司 Measuring device and method for evaluating lazy flow and high viscosity concrete viscosity
CN108279186B (en) * 2018-02-10 2023-12-22 中铁一局集团有限公司 Measuring device and method for evaluating viscosity of low-fluidity and high-viscosity concrete
WO2021238308A1 (en) * 2020-05-28 2021-12-02 中交一公局集团有限公司 Inspection mold, vibration inspection apparatus, and asphalt mixture fluidity measurement method
CN112369441A (en) * 2020-10-22 2021-02-19 赣州市倞华菲尔雪食品有限公司 Stirrer for cake production and operation method
CN112369441B (en) * 2020-10-22 2022-06-10 赣州市倞华菲尔雪食品有限公司 Stirrer for cake production and operation method

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Granted publication date: 20180921

Termination date: 20210210