A mixing and spraying device for testing the performance of quick-setting agent for shotcrete
A technology of spraying concrete and spraying device, which is applied in the direction of spraying device and liquid spraying device, and achieves the effects of convenient installation and disassembly, simple structure and low manufacturing cost
Active Publication Date: 2021-02-23
CHINA RAILWAY NO 5 ENG GRP +2
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In order to solve the technical problem of the injection system nozzle of the device that uses the spray atomization mixing and jet compaction forming method to test the performance of the quick-setting agent, the invention proposes a mixing and spraying device for testing the performance of the concrete quick-setting agent
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.
[0018] The invention provides a mixing and spraying device for detecting the performance of the concrete quick-setting agent, such as figure 1 As shown, it includes a nozzle body 1, a material storage chamber 2, a gas-liquid mixing chamber 3, and an accelerator nozzle 4. The two ends of the nozzle body 1 are respectively provided with an expansion port 101 and a restriction neck 102, and the outer wall of the material storage room 2 is installed There is a cement paste feeding interface 5, and the outer wall of the gas-liquid mixing chamber 3 is respectively equipped with an accelerator feeding interface 6 and a compressed air interface 7, and the limiting shrinkage 102, the storage chamber 2 and the gas-liquid mixing chamber 3 are connected end to end in sequence, The quick-setting agent nozzle 4 is arranged within the constrictio...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a mixing and spraying device for testing the performance of the quick-setting agent for sprayed concrete. Outer wall of the cement slurry storage room is equipped with a cement slurry feeding interface, and the gas-liquid mixing outer wall is respectively equipped with a measured quick-setting agent feeding interface and a compressed air interface, limiting shrinkage, cement cleaning The slurry storage chamber and the gas-liquid mixing chamber are connected end to end in turn, and the accelerator nozzle is connected to the top of the cement slurry storage chamber with a threaded pair and placed in the restricted neck of the nozzle body. The device creates conditions for the quick-setting agent to be tested to be mixed with compressed air at an appropriate flow rate, sprayed and atomized, and fully mixed with the cement slurry, and finally to be jet-dense and compacted in the conical test mold. It is a matching part of the device for testing the performance of the accelerator by means of jet compaction molding.
Description
technical field [0001] The invention relates to the technical field of testing devices for building construction materials, in particular to a technical field for testing the performance of quick-setting agents for shotcrete. Background technique [0002] Shotcrete is an important technical means for primary support of tunnels in tunnel drilling and blasting construction. In the sprayed concrete construction process, it is necessary to mix the quick-setting agent into the concrete. The performance of the mixed quick-setting agent has a great influence on the construction quality, efficiency, cost and durability of the support structure formed by shotcrete. big impact. Therefore, it is of great practical significance to test and evaluate the performance of accelerators for shotcrete by using corresponding technical means. At present, it is generally used at home and abroad to mix the quick-setting agent and mixing water into the cement to form a cement slurry, and then test...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B05B7/04B05B7/12
CPCB05B7/0416B05B7/12
Inventor 凌帆伊绣臻
Owner CHINA RAILWAY NO 5 ENG GRP