KR20090086378A - A quickly hardening agent mixture machine for shotcrete - Google Patents
A quickly hardening agent mixture machine for shotcrete Download PDFInfo
- Publication number
- KR20090086378A KR20090086378A KR1020090064573A KR20090064573A KR20090086378A KR 20090086378 A KR20090086378 A KR 20090086378A KR 1020090064573 A KR1020090064573 A KR 1020090064573A KR 20090064573 A KR20090064573 A KR 20090064573A KR 20090086378 A KR20090086378 A KR 20090086378A
- Authority
- KR
- South Korea
- Prior art keywords
- compressed air
- powdery
- shotcrete
- mixing
- fastener
- Prior art date
Links
- 239000011378 shotcrete Substances 0.000 title claims abstract description 36
- 239000000203 mixture Substances 0.000 title description 3
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 239000008267 milk Substances 0.000 claims abstract description 24
- 210000004080 milk Anatomy 0.000 claims abstract description 24
- 235000013336 milk Nutrition 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims 1
- 238000000638 solvent extraction Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 238000010276 construction Methods 0.000 description 18
- 239000007921 spray Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0481—Plant for proportioning, supplying or batching
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Architecture (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Nozzles (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
Description
The present invention relates to a powdery dry feeder mixing device of shotcrete pouring equipment, and in particular, the present invention by mixing and spraying the high pressure air and powdered dry feeder immediately after the shotcrete spraying nozzle to stably perform the shotcrete work, tunnel or The present invention relates to a powder-based dry feeder mixing device of shotcrete placing equipment for rapidly curing and curing the surface of a surface and performing tunnel or surface construction stably.
In general, in civil engineering works for roads, railways, etc., they are used as means for securing roads through tunnels or cuts as a means for securing roads.
In this construction method, it is well known that shotcrete is applied to stabilize the ground by applying shotcrete to the slump surface of the tunnel or the surface due to construction conditions or problems in construction.
However, in this construction method, due to the problems of air and various construction problems, the shotcrete work is simply completed and the next process is required. Will have.
For this reason, after curing concrete in the process of shotcrete work, in order to perform the next process, the concrete sprayed on the slope or slope surface of the tunnel or the surface is cured (cured) in a short time by putting a fastener during the shotcrete work. It is well known that a payment is used to perform the payment.
Therefore, in the shotcrete method used for placing concrete in tunnels or surfaces where formwork cannot be used in construction or economic aspects, a lot of fasteners are used to rapidly cure (cure) the sprayed concrete. In this concrete quenching method, a charging method of a quenching material formed in a liquid phase and a pulverizing material in a liquid form is known.
However, in the method of constructing the quickener using liquid phase, it is easy and convenient to handle, handle and install the quickener, while the strength of concrete decreases after construction and the high fluidity of concrete leads to problems in strength after construction, which is a significant disadvantage in construction. In the case of the use of powdery fasteners, the powdery fasteners are weak in water and have a disadvantage in that the curing speed is increased when they are mixed with water, and in the case of wet shotcrete construction, it requires a considerable skill to be applied. It is.
Accordingly, the present invention is to provide a shotcrete pouring equipment for imparting stability and certainty to the slump construction of tunnels or surfaces by spraying and mixing powdered quickeners in the horizontal direction with respect to the moving direction of the concrete milk in the direction immediately before the injection nozzle. The purpose is to provide a dry feed mixing device.
In addition, the present invention is sprayed and mixed in the horizontal direction with respect to the advancing direction of the concrete milk in the direction immediately before the injection nozzle in the shotcrete construction, while supplying the compressed air at the same time, the stability and reliability of the slump construction of the tunnel or surface Another purpose is to provide a dry feed mixing device for shotcrete pouring equipment.
In addition, the present invention controls the input amount of the powdery fastener in accordance with the delivery pressure of the concrete milk to dry powder grade of shotcrete equipment that can supply an appropriate amount of the powdery fastener in accordance with the delivery amount of the concrete milk pulsating (intermittent) Another object is to provide a payment mixing device.
The present invention for achieving this object is a storage means for storing and delivering the powdery fastener at a predetermined pressure; A fastener quantitative dispensing means which is installed below the storage means and adjusts an amount of dispensing of the powdery quickener; Mixing means for supplying and mixing the powdered quickener and compressed air immediately after the injection nozzle of the shotcrete discharging means; It characterized in that it comprises a compressed air generating means for adjusting the pressure of the compressed air, which will be described in more detail according to the accompanying drawings as follows.
Figure 1 is an overall schematic view of the installation state of the present invention, Figure 2 is a cross-sectional view showing a combined state of the storage means and the fastener quantitative delivery means of the present invention, Figure 3 is a cross-sectional view taken along line BB of Figure 2, ), (B) is an illustration of each embodiment of the mixing means of the present invention.
As shown, the present invention includes a storage means for maintaining a predetermined pressure to stably discharge the stored powdery fastener; A fastener quantitative dispensing means (20) installed below the storage means (10) to adjust a dispensing amount of the powdery fastener; Mixing means (30) for supplying and mixing powdered quickener and compressed air immediately after the injection nozzle (60) of the shotcrete discharging means (50); It characterized in that it comprises a compressed air generating means 40 for adjusting the pressure of the compressed air.
The storage means (10) is a sealed storage tank (12) having a hatch (11) formed therein to maintain a constant internal pressure at all times through the compressed air supply pipe (13) to a predetermined amount of powder feed material to the lower outlet (14) (G) is continuously discharged in a stable state, and the powdery quick delivery material quantitative dispensing means (20) having a supply (21) is provided below the discharge port (14) of the storage means (10).
The powdery fasteners quantitatively discharging means 20 is a powdery fasteners quantitatively discharging means 20 in which the
The shotcrete delivery means 50 is the same as the existing means for pulsating the concrete milk by a two-cycle pump, and the spraying direction of the "a"
As described above, in the present invention, immediately before the injection of the "a"
In addition, in the present invention, the powdered fastener G and the compressed air A are mixed and supplied to the mixing means 30 in the mixing means 30 immediately after the “a”
Said mixing
In addition, the compressed air generating means 40 is for supplying the compressed air to the storage means 10, the quick feed material delivery means 20 and the mixing means 30, and adjusts the pressure through the
In the present invention of the member, such as the shotcrete delivery means 50 and the compressed air generating means 40 is operated, the interior of the storage means 10 is always constant by the constant
In the present invention, the powdery fastener is hardened and solidified inside the spray nozzle by a relatively simple device that sprays and mixes the powdered fastener made of powder during shotcrete in the horizontal direction with respect to the advancing direction of the concrete milk in the direction immediately before the spray nozzle. It is possible to impart the stability and certainty of the slump construction of the tunnel or the surface by eliminating the phenomenon. It is possible to give stability and certainty to the slumping of tunnel or surface by spraying and mixing, but supplying with compressed air at the same time.In addition, the present invention controls the input amount of powdered fastener according to the discharge pressure of concrete milk to control pulsation ( Depending on the amount of concrete milk to be sent out intermittently) It has various features such as expecting perfection of construction by adjusting.
1 is an overall schematic view of the installation state of the present invention,
2 is a cross-sectional view showing a combined state of the storage means and the fastener quantitative sending means of the present invention,
3 is a cross-sectional view taken along the line B-B of FIG.
Figure 4 (a), (b) is an illustration of each embodiment of the mixing means of the present invention.
* Explanation of symbols for the main parts of the drawings
10: storage means 11: hatch 12: storage tank 13: compressed air supply pipe
14: outlet 15: static pressure control valve 20: powder feed material delivery means
21: Supply 휀 22: Flight
23: drive means 24: compressed air inlet pipe 25: delivery pipe
30: mixing means 31: mixing side 32: transfer pipe
40: compressed air generating means 41: compressed air supply pipe 42: pressure control valve
43: compressed air inlet hole
50: shotcrete delivery means
60: "a" type injection nozzle 61: sprayer
S: Input space
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090064573A KR20090086378A (en) | 2009-07-15 | 2009-07-15 | A quickly hardening agent mixture machine for shotcrete |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090064573A KR20090086378A (en) | 2009-07-15 | 2009-07-15 | A quickly hardening agent mixture machine for shotcrete |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20090086378A true KR20090086378A (en) | 2009-08-12 |
Family
ID=41205867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020090064573A KR20090086378A (en) | 2009-07-15 | 2009-07-15 | A quickly hardening agent mixture machine for shotcrete |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20090086378A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101222407B1 (en) * | 2011-06-29 | 2013-01-14 | 현대건설주식회사 | Method and device to provide accelerant automatically for shotcrete, and concrete placer installed the device |
KR102138695B1 (en) * | 2020-03-23 | 2020-07-28 | 주식회사 대우건설 | Accelerators powder uniform mixture type shotcrete apparatus |
KR20210095454A (en) | 2020-01-23 | 2021-08-02 | 진원화 | Air supplying apparatus for the shotcrete of the pump car |
-
2009
- 2009-07-15 KR KR1020090064573A patent/KR20090086378A/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101222407B1 (en) * | 2011-06-29 | 2013-01-14 | 현대건설주식회사 | Method and device to provide accelerant automatically for shotcrete, and concrete placer installed the device |
KR20210095454A (en) | 2020-01-23 | 2021-08-02 | 진원화 | Air supplying apparatus for the shotcrete of the pump car |
KR102138695B1 (en) * | 2020-03-23 | 2020-07-28 | 주식회사 대우건설 | Accelerators powder uniform mixture type shotcrete apparatus |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |