CN109899091A - A kind of mixing station material mixture ratio Reverse Turning Control method required based on gunite concrete work on the spot - Google Patents
A kind of mixing station material mixture ratio Reverse Turning Control method required based on gunite concrete work on the spot Download PDFInfo
- Publication number
- CN109899091A CN109899091A CN201910237265.6A CN201910237265A CN109899091A CN 109899091 A CN109899091 A CN 109899091A CN 201910237265 A CN201910237265 A CN 201910237265A CN 109899091 A CN109899091 A CN 109899091A
- Authority
- CN
- China
- Prior art keywords
- concrete
- pumping
- slump
- pressure
- work
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000011378 shotcrete Substances 0.000 title claims abstract description 17
- 239000000203 mixture Substances 0.000 title claims abstract description 15
- 238000005086 pumping Methods 0.000 claims abstract description 76
- 238000010276 construction Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000010339 dilation Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000000654 additive Substances 0.000 description 13
- 230000000996 additive effect Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 3
- 230000003252 repetitive effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The invention discloses a kind of mixing station material mixture ratio Reverse Turning Control methods required based on gunite concrete work on the spot, based on gunite concrete work on the spot requirement, determine best jet velocity and best rate of pumping, concrete slump requirement when determining pumping according to specification and construction experience, the pumping pressure value range taken needed for being provided by pressure loss formula of the concrete in pumping line for construction site, by testing and/or determining that transport period concrete slump changes over time relationship in conjunction with past construction experiences, the slump range value reached needed for Tui get mixing station concrete, carry out test measurement concrete strength simultaneously, relation curve between the slump and admixture dosage, determine while meeting the admixture dosage section of the slump and concrete strength requirement, matching for concrete is carried out according to gained interval range Compare work.
Description
Technical field
The present invention relates to a kind of technical field of concrete construction, more particularly to one kind to be based on gunite concrete work on the spot
It is required that mixing station material mixture ratio Reverse Turning Control method.
Background technique
In tunnel project application, Tunnel is applied in time after tunnel excavation, to guarantee constructing tunnel
Excessive deformation occurs for safety and prevention rock mass.Concrete spraying technology is the Tunnel generallyd use both at home and abroad at present
The mode of construction, mixing station centralized mixing of the used concrete first outside hole, and tunnel is delivered to by concrete delivery truck
In road, sprayed construction is carried out by wet spraying machine.
According to the actual conditions of engineering site, mixing station carries out the mixing of concrete according to certain proportion, and what is obtained is mixed
Solidifying soil must satisfy the requirement of intensity and workability.During transportation, isolation and slump damage can occur for mixing concrete
The phenomenon that mistake, guarantees slump control in a certain range, it is ensured that wet-spraying machine is pumping so should shorten as far as possible the shipping time
When concrete plugging phenomenon will not be caused because slump-loss is excessive.Concrete in pumping line there are the pressure loss,
With the proportion of concrete, the length of pumping line etc., factors are related for it, therefore the control of wet-spraying machine pressure is also required, must
It need guarantee that the concrete of nozzle reaches certain jet velocity and could obtain relatively good jeting effect.Different engineerings pair
Answer unused execution conditions, the proportion of concrete must in conjunction with construction site with progress is corresponding the case where pumping equipment adjusts
Whole, this undoubtedly needs largely to test to determine.Therefore a kind of mix required based on gunite concrete work on the spot is proposed
It stands material mixture ratio Reverse Turning Control method, facilitates the proportion of concrete needed for mixing station quickly determines.
Summary of the invention
The application aims to solve at least one of the technical problems existing in the prior art.For this purpose, an object of the present invention
It is to provide a kind of mixing station material mixture ratio Reverse Turning Control method required based on gunite concrete work on the spot.This method energy
Reduce because construction field geology situation it is different from the case where pumping equipment required for progress a large amount of repetitive tests, accurately control
Concrete proportioning and admixture dosage processed, so that will not be made because concrete slump loss value is excessive in pump concrete
Occur at the phenomenon that plugging, booster, can preferably carry out ejection supporting operation.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of mixing station material mixture ratio Reverse Turning Control method required based on gunite concrete work on the spot, based on injection
Concrete work on the spot requirement, determines best jet velocity and best rate of pumping, determines pump according to specification and construction experience
Concrete slump requirement when sending is adopted needed for being provided by pressure loss formula of the concrete in pumping line for construction site
The pumping pressure value range taken, by testing and/or combining past construction experiences to determine transport period concrete slump at any time
Between variation relation, the slump range value reached needed for Tui get mixing station concrete, at the same carry out test measurement concrete strength,
Relation curve between the slump and admixture dosage, determines while the additive for meeting the slump and concrete strength requirement is mixed
Section is measured, the proportion work of concrete is carried out according to gained interval range.
Further, concrete ejection operation is carried out using pumping wet spraying machine, is based on gunite concrete work on the spot
It is required that obtaining axial velocity at best jet velocity namely jet hole by following equations:
Wherein, vlFor by axial velocity at spray plane；v0For axial velocity at jet hole；y0For dilation angle, by spraying machine
Spray head is acquired with by the distance between spray plane and nozzle angle of flare；R0For nozzle port radius.
Further, it by solving obtained best jet velocity, is obtained under best jet velocity according to the following formula
Best rate of pumping:
Wherein, v1For best rate of pumping；P0To spray pressure at jet hole；P1For pumping line outlet pressure；ρ1For not
Concrete density when into compressed air；v2Enter speed when nozzle for compressed air；P2For compressed air pressure；ρ2For pressure
Contracting atmospheric density.
Further, concrete slump section [S when determining pumping according to engine request and past construction experiences1,
S2], pumping pressure value is determined according to the determining slump, best rate of pumping, and by pumping pressure value P3Control is in following model
It encloses:
Wherein, K is safety coefficient；P3For pumping pressure value；ρ is concrete density；G is acceleration of gravity；H is pumping line
The vertical height difference of road tilting section；L is duct length；R is concrete delivery pipe radius；t2/t1For distribution valve of concrete pump switching time
The ratio between concrete time is pushed with piston；The mean flow rate for being concrete mix in delivery pipe；α is radial pressure and axis
To the ratio between pressure, pumping mode is selected as constant velocity pumping, has
Further, it is contemplated that drag losses value caused by slump-loss, concrete fluctuating factor does not calculate when pumping,
Take safety coefficient K=0.9.
Further, determine that concrete slump is at any time in transportational process according to field test and/or past construction experiences
Between the relational expression that changes, determine the haulage time of mixing station to setting, and then acquire the loss feelings of the slump in transportational process
Condition.
Compared with prior art, the device have the advantages that it is as follows:
It, can be in time according to existing 1. concrete proportioning control method proposed by the present invention is the actual conditions based on engineering site
The feedback information of field is adjusted, and combines the empirical data of previous engineering to the slump-loss value during concrete transportation
Data fitting, the slump range value reached needed for Tui get mixing station concrete are carried out, so that it is accurately controlled concrete proportioning,
So that the phenomenon that plugging, booster will not be caused because concrete slump loss value is excessive in pump concrete generation, more
Ejection supporting operation is carried out well.
2. concrete proportioning control method proposed by the invention, without considering further that due to Control Measures for Concrete Slump in transportational process
Degree loss is excessive and plugging when pumping, can not pump, and the problem of additionally add the performance of additive improvement concrete.
3. concrete proportioning control method proposed by the invention can be suitable for the construction work of different construction conditions,
Can solve because construction field geology situation it is different from the case where pumping equipment required for progress a large amount of repetitive tests.
4. concrete proportioning control method proposed by the invention can provide reliable pumping pressure control for scene
Value reduces large number of equipment Task of Debugging.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention；
Fig. 2 is wet shotcreting diffusion schematic diagram；
Fig. 3 is pumping line and nozzle junction schematic diagram；
Fig. 4 is pumping resistance schematic diagram in pipeline；
Fig. 5 is influence curve figure of the additive additive amount to concrete slump and intensity.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of mixing station required based on machine-made sand concrete use site workability provided by the invention
Material mixture ratio Reverse Turning Control method determines best jet velocity and best pumping based on gunite concrete work on the spot requirement
Speed, concrete slump requirement, passes through pressure of the concrete in pumping line when determining pumping according to specification and construction experience
Power loses the pumping pressure value range taken needed for formula provides for construction site, by testing and combining past construction experiences true
The workability time-varying function of section concrete when transporting surely, the slump range value reached needed for Tui get mixing station concrete.Simultaneously
Carry out the function curve between test measurement concrete strength, the slump and admixture dosage, meets the two and require, determine additional
Agent volume section carries out the proportion work of concrete according to gained interval range.
The present embodiment can be reduced because construction field geology situation it is different from the case where pumping equipment required for progress it is a large amount of
Repetitive test is accurately controlled concrete proportioning and admixture dosage, so that will not be because of concrete in pump concrete
Slump-loss value is excessive and generation the phenomenon that causing plugging, booster, can preferably carry out ejection supporting operation.
In one embodiment, best jet velocity determination process is as follows: carrying out concrete ejection using pumping wet spraying machine
Operation is obtained at best jet velocity namely jet hole based on gunite concrete work on the spot requirement by following equations
Axial velocity:
Wherein, vlFor by axial velocity at spray plane；v0For axial velocity at jet hole；y0For dilation angle, by spraying machine
Spray head is acquired with by the distance between spray plane and nozzle angle of flare；R0For nozzle port radius.
Formula (1) specific derivation process is as follows:
As shown in Fig. 2, wet sprayed concrete delivery pump is by concrete pumping to nozzle, air is presented in jetting stream
It is the characteristics of jet stream, available according to geometry formula
y0=R0+l·tgθ (2)
Wherein, y0For dilation angle；R0For spout radius；L is spray distance；θ is nozzle angle of flare.Used in engineering site
To wet-spraying machine model be it is believed that the nozzle generate angle of flare be θ can by test determine.
Provided according to " Technical code for shotcrete rock bolts shore " (GB50086-2001), the spray head of spraying machine should with by
Spray plane is vertical, and should keep the spray distance of 0.6-1m, and jet stream is thrown under occurring under the effect of gravity if spray distance is excessive
Phenomenon causes unnecessary loss as shown in Fig. 2 phantom line segments.
For the jet stream that round nozzle sprays, according to the law of conservation of momentum: mlvl=m2v2, by any in the unit time
The momentum of transversal wall jet dough should be equal to the momentum of nozzle dough in the unit time, i.e.,
Wherein, ρ0、ρlRespectively at nozzle and any position l in unit volume mixture content averag density；v0For
Nozzle axial velocity；V is the axial velocity of any position；vlFor axial velocity at l, v and vlThe following relationship of satisfaction (
Bright (2000) " Analyses of Shot Velocity Property of Wet Shotcrete "):
Use in hydrodynamics jet stream for the hypothesis of incompressible fluid, it is believed that density is at any position in injection
Constant, i.e. ρl=ρ0, formula (4) are substituted into abbreviation in formula (3), abbreviation process is as follows:
Abbreviation obtains
Equation is carried out to formula (6) to convert to obtain
Wherein
P is best impact force, and analyzer can be used and shock sensors measure, when best spray regime most
Good impact force generally takes 10~15N.
In another embodiment, as shown in figure 3, concrete applies wind pressure in pumping line exit, with certain speed
It being sprayed from nozzle, wind pressure setting value and speed keep certain value, best rate of pumping can be derived from according to Bernoulli equation (8):
Wherein, v1For best rate of pumping；P0To spray pressure at jet hole；P1For pumping line outlet pressure；ρ1For not
Concrete density when into compressed air；v2Enter speed when nozzle for compressed air；P2For compressed air pressure；ρ2For pressure
Contracting atmospheric density.
Abbreviation is carried out to formula (8) to obtain:
In another embodiment, because the pumping procedure time is shorter, therefore slump-loss of the concrete in pumping line can
To ignore, concrete slump is required according to field engineering when pumping and past construction experiences are determined in [S1,S2] between.
Pumping pressure value is determined according to the determining slump, best rate of pumping, and by pumping pressure value P3Control is in following range:
Wherein, K is safety coefficient；P3For pumping pressure value；ρ is concrete density；G is acceleration of gravity；H is pumping line
The vertical height difference of road tilting section；L is duct length；R is concrete delivery pipe radius；t2/t1For distribution valve of concrete pump switching time
The ratio between concrete time is pushed with piston；The mean flow rate for being concrete mix in delivery pipe；α is radial pressure and axis
To the ratio between pressure, pumping mode is selected as constant velocity pumping, has
Pumping pressure value P3Derivation process are as follows:
It is a major issue that the loss of overpressure is conveyed during concrete pumping, especially in long-distance transportation through pipeline
In the process, the determination of type selecting, the length of conveying distance and aggregate match ratio that the pressure loss is pumped with wet shotcreting etc. is related.
The pressure loss in pumping line can be divided into friction loss, gravity head, on-way resistance include again tilting section,
Vertical section, the bend pipe corner pressure loss.
As shown in figure 4, the pressure loss of tilting section are as follows:
Px=P3-P1=PG+Pf (11)
In formula: PxFor the pressure loss of tilting section；P1For output end pressure；P3To input end pressure；PGFor gravity head；Pf
For on-way resistance.
It is lost according to concrete pumping pressure as defined in " Concrete Pumping Construction technical specification " (JGJ/T 10-1995) public
Formula:
K1=300-S
K2=400-S (12)
Wherein, PXFor the pressure loss of tilting section；ρ is concrete density；G is acceleration of gravity；H is that tilted tube is vertical
Height difference；L is duct length；ε is friction loss；R is concrete delivery pipe radius；K1For adhesion coefficient；K2For speed system
Number；S is concrete slump；t2/t1The ratio between concrete time is pushed (when setting for distribution valve of concrete pump switching time and piston
When unknown for performance, it can use 0.3)；The mean flow rate for being concrete mix in delivery pipe；α is radial pressure and axial direction
The ratio between pressure takes 0.9 for normal concrete, can be obtained according to concrete slump area requirement when formula (12) and pumping
Pumping pressure value P3Range.
Drag losses value caused by slump-loss, concrete fluctuating factor does not calculate when in view of pumping, takes safe system
Number K=0.9.
In one embodiment, there is the phenomenon that apparent slump-loss, shadow in the concrete after mixing during transportation
The factor of sound includes time, temperature etc., and under normal circumstances, haulage time influences the slump maximum.By test and/or combine with
Past construction experience is that primary variables carries out the fitting of single factor test data or using time, temperature, water-reducing agent as variable using haulage time
Carry out the time-varying function that multifactor data fitting determines transport period (temperature is constant) concrete slump, Tui get mixing station coagulation
The slump range value reached needed for soil, while carrying out between test measurement concrete strength, the slump and admixture dosage
Relation curve determines while meeting the admixture dosage section of the slump and concrete strength requirement, according to gained interval range
Carry out the proportion work of concrete.
Now by taking certain highway as an example, in conjunction with past construction experiences, in different temperature (DEG C) and water-reducing agent additive amount
Under (%), it is preliminary disclose slump h (cm) and elapsed time (min) and relationship.
The slump and elapsed time relation table under 1 different temperatures of table
Hyperbolic functions relationship is substantially presented in the slump listed by serial number 1,2,3,4,5 and time relation data in table 1.Data are quasi-
Conjunction obtains the workability time-varying function during concrete transportation are as follows:
H=0.007t2-0.763t+19.612；
Index of correlation R2=0.949.4
As above signal is only explained, actual conditions are not limited to data in table, according to live traffic condition and should combine
Past construction experiences carry out data fitting to the relationship of concrete slump and haulage time, to obtain concrete in transportational process
The damaed cordition of the slump, requirement needed for determining mixing station workability of concrete.
As shown in figure 5, obtaining workability of concrete and additive additive amount by test by changing additive additive amount
Between relation curve, while carry out test measurement concrete strength and additive additive amount between function curve, meet two
Person requires, and determines an accurate section.Wherein concrete slump above-mentioned steps determine, intensity should meet engineering design and want
It asks.
Acquiring mixing station concrete slump according to above-mentioned steps should be between 14~17cm, and intensity should meet design
44.5MPa requirement, can be obtained additive additive amount in 0.1%~0.2% according to Fig. 5.
Above-described embodiment is only to clearly demonstrate examples made by the present invention, rather than the restriction to embodiment.For
For those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.Here without can not be also exhaustive to all embodiments.And the obvious variation or change thus amplified out
It is dynamic to be still in the protection scope of this invention.
Claims (6)
1. a kind of mixing station material mixture ratio Reverse Turning Control method required based on gunite concrete work on the spot, feature are existed
In: based on gunite concrete work on the spot requirement, best jet velocity and best rate of pumping are determined, according to specification and construction
Concrete slump requirement when empirically determined pumping is construction site by pressure loss formula of the concrete in pumping line
The pumping pressure value range taken needed for offer, section concrete when by testing and/or past construction experiences is combined to determine transport
The slump changes over time relationship, the slump range value reached needed for Tui get mixing station concrete, while carrying out test measurement
Relation curve between concrete strength, the slump and admixture dosage determines while meeting the slump and concrete strength is wanted
The admixture dosage section asked carries out the proportion work of concrete according to gained interval range.
2. according to the method described in claim 1, it is characterized by: using pumping wet spraying machine carry out concrete ejection operation,
Based on gunite concrete work on the spot requirement, axis at best jet velocity namely jet hole is obtained by following equations
Speed:
Wherein, vlFor by axial velocity at spray plane；v0For axial velocity at jet hole；y0For dilation angle, by the spray head of spraying machine
It is acquired with by the distance between spray plane and nozzle angle of flare；R0For nozzle port radius.
3. according to the method described in claim 2, it is characterized by: by solving obtained best jet velocity, by following public affairs
The best rate of pumping under best jet velocity is calculated in formula:
Wherein, v1For best rate of pumping；P0To spray pressure at jet hole；P1For pumping line outlet pressure；ρ1Not enter
Concrete density when compressed air；v2Enter speed when nozzle for compressed air；P2For compressed air pressure；ρ2It is empty for compression
Air tightness.
4. according to the method described in claim 3, it is characterized by: determining pumping according to engine request and past construction experiences
When concrete slump section [S1,S2], pumping pressure value is determined according to the determining slump, best rate of pumping, and will pumping
Pressure value P3Control is in following range:
Wherein, K is safety coefficient；P3For pumping pressure value；ρ is concrete density；G is acceleration of gravity；H inclines for pumping line
The vertical height difference of oblique section；L is duct length；R is concrete delivery pipe radius；t2/t1For distribution valve of concrete pump switching time and work
Plug pushes the ratio between concrete time；The mean flow rate for being concrete mix in delivery pipe；α is radial pressure and axial pressure
The ratio between power, pumping mode are selected as constant velocity pumping, have
5. according to the method described in claim 4, it is characterized by: in view of pumping when slump-loss, concrete fluctuation because
Drag losses value caused by element does not calculate, takes safety coefficient K=0.9.
6. according to the method described in claim 4, it is characterized by: determining fortune according to field test and/or past construction experiences
The relational expression that concrete slump changes over time during defeated, determines the haulage time of mixing station to setting, and then acquire
The damaed cordition of the slump in transportational process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237265.6A CN109899091B (en) | 2019-03-27 | 2019-03-27 | Reverse control method for material ratio of mixing station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237265.6A CN109899091B (en) | 2019-03-27 | 2019-03-27 | Reverse control method for material ratio of mixing station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109899091A true CN109899091A (en) | 2019-06-18 |
| CN109899091B CN109899091B (en) | 2021-04-16 |
Family
ID=66953836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910237265.6A Expired - Fee Related CN109899091B (en) | 2019-03-27 | 2019-03-27 | Reverse control method for material ratio of mixing station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109899091B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748356A (en) * | 2019-09-27 | 2020-02-04 | 山东科技大学 | Wind-driven automatic proportioning concrete sprayer |
| CN112666342A (en) * | 2021-01-14 | 2021-04-16 | 吉安创星空间科技有限公司 | Slump detection device for building engineering detection |
| CN113884661A (en) * | 2021-10-20 | 2022-01-04 | 广西大学 | Fresh concrete working performance control method based on pouring construction performance target regulation |
| CN114538820A (en) * | 2022-04-27 | 2022-05-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Sprayed concrete rebound inhibition method based on full flow control |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000104258A (en) * | 1998-07-27 | 2000-04-11 | Toko Corp | Slope face spray method |
| CN101278245A (en) * | 2005-06-17 | 2008-10-01 | 爱水泥有限公司 | Methods and systems for redesigning pre-existing concrete mix designs and manufacturing plants and design-optimizing and manufacturing concrete |
| CN101280628A (en) * | 2008-05-23 | 2008-10-08 | 中建五局第三建设有限公司 | Special fine sand high-strength high-performance concrete ultra-high pumping construction method |
| JP2009242118A (en) * | 2008-03-28 | 2009-10-22 | Tokyo Metropolitan Univ | Steel fiber-reinforced mortar with fiber oriented |
| CN103787628A (en) * | 2013-12-18 | 2014-05-14 | 中铁五局（集团）有限公司 | Preparation method of low-temperature early strength concrete for high cold permafrost region tunnel |
| CN105036626A (en) * | 2015-07-20 | 2015-11-11 | 山西四建集团有限公司 | Multi-factor parameter method for designing high-performance concrete |
| CN105756688A (en) * | 2016-04-13 | 2016-07-13 | 中铁十六局集团北京轨道交通工程建设有限公司 | Sprayer device and construction method for improving concrete spraying quality |
| CN106630863A (en) * | 2017-01-24 | 2017-05-10 | 黑龙江盛世新宇高新技术开发有限公司 | Proportioning method of C60 to C70 high-performance concrete |
-
2019
- 2019-03-27 CN CN201910237265.6A patent/CN109899091B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000104258A (en) * | 1998-07-27 | 2000-04-11 | Toko Corp | Slope face spray method |
| CN101278245A (en) * | 2005-06-17 | 2008-10-01 | 爱水泥有限公司 | Methods and systems for redesigning pre-existing concrete mix designs and manufacturing plants and design-optimizing and manufacturing concrete |
| JP2009242118A (en) * | 2008-03-28 | 2009-10-22 | Tokyo Metropolitan Univ | Steel fiber-reinforced mortar with fiber oriented |
| CN101280628A (en) * | 2008-05-23 | 2008-10-08 | 中建五局第三建设有限公司 | Special fine sand high-strength high-performance concrete ultra-high pumping construction method |
| CN103787628A (en) * | 2013-12-18 | 2014-05-14 | 中铁五局（集团）有限公司 | Preparation method of low-temperature early strength concrete for high cold permafrost region tunnel |
| CN105036626A (en) * | 2015-07-20 | 2015-11-11 | 山西四建集团有限公司 | Multi-factor parameter method for designing high-performance concrete |
| CN105756688A (en) * | 2016-04-13 | 2016-07-13 | 中铁十六局集团北京轨道交通工程建设有限公司 | Sprayer device and construction method for improving concrete spraying quality |
| CN106630863A (en) * | 2017-01-24 | 2017-05-10 | 黑龙江盛世新宇高新技术开发有限公司 | Proportioning method of C60 to C70 high-performance concrete |
Non-Patent Citations (2)
| Title |
|---|
| 张明 等: "湿喷混凝土喷射速度特性解析", 《探矿工程》 * |
| 郑捷: "混凝土泵送压力的几种计算方法", 《商品混凝土》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748356A (en) * | 2019-09-27 | 2020-02-04 | 山东科技大学 | Wind-driven automatic proportioning concrete sprayer |
| CN112666342A (en) * | 2021-01-14 | 2021-04-16 | 吉安创星空间科技有限公司 | Slump detection device for building engineering detection |
| CN113884661A (en) * | 2021-10-20 | 2022-01-04 | 广西大学 | Fresh concrete working performance control method based on pouring construction performance target regulation |
| CN113884661B (en) * | 2021-10-20 | 2022-11-18 | 广西大学 | Fresh concrete working performance control method based on pouring construction performance target regulation |
| WO2023065592A1 (en) * | 2021-10-20 | 2023-04-27 | 广西大学 | Fresh concrete working performance control method based on pouring construction performance target regulation and control |
| CN114538820A (en) * | 2022-04-27 | 2022-05-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Sprayed concrete rebound inhibition method based on full flow control |
| CN114538820B (en) * | 2022-04-27 | 2022-08-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Sprayed concrete rebound inhibition method based on full flow control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109899091B (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109899091A (en) | A kind of mixing station material mixture ratio Reverse Turning Control method required based on gunite concrete work on the spot | |
| CN101638988B (en) | Method for wet spraying with extra-dry or ultra-dry stiff concrete | |
| KR101785061B1 (en) | Method for grouting using steel pipe and apparatus for the same | |
| CN105756688B (en) | A kind of ejecting device and construction method improving concrete ejection quality | |
| CN211274254U (en) | Foaming device | |
| CN109397538B (en) | Foam cement slurry generator, cement slurry pressurized inflation device and application thereof | |
| CN109622267A (en) | A kind of mobile concrete jet robot ejecta automatic adjusting control device and method | |
| CN104420847A (en) | Method for preparing foamed cement slurry | |
| CN102635373B (en) | High-pressure hydraulic injection system | |
| CN203321540U (en) | Multifunctional mining long-distance wet spraying machine with automatic proportioning | |
| CN203129149U (en) | Pumping type wet spraying machine | |
| CN105397646B (en) | A kind of continuous sand supplying system and continuous sand supplying method | |
| CN105888690A (en) | Spray sowing method and equipment for TBM (tunnel boring machine) and drilling and blasting type tunnel construction | |
| CN104108134B (en) | The process units of light porous building materials and production method thereof | |
| CN101982747A (en) | Method for calibrating synchronous grouting quantity and grouting pressure of shield | |
| CN106313324A (en) | Device for preparing foam cement slurry | |
| CN213113171U (en) | Low-pressure gaseous carbon dioxide foaming hard polyurethane foam pouring equipment | |
| CN105126277A (en) | Large-flow compressed air and foam mixing device | |
| KR101222407B1 (en) | Method and device to provide accelerant automatically for shotcrete, and concrete placer installed the device | |
| CN103161166B (en) | Wind-guiding chemical grouting device and grouting method of the same | |
| CN215565970U (en) | Feeding device for concrete and mortar injection unit | |
| JP2757335B2 (en) | Air fluid confluence pumping tube, fluid pumping device using the same, and method of using them | |
| KR100289016B1 (en) | Method for adding liquid fastener for wet shotcrete pouring and apparatus therefor | |
| JP5170821B2 (en) | Water control system and method in dry spray method | |
| CN211736409U (en) | Novel spray nozzle structure of concrete spraying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |