Construction method of gunite concrete

A construction method and concrete technology, applied in the direction of basic structure engineering, architecture, building construction, etc., can solve the problems of expanding equipment, increasing power, increasing mixing time, etc., to improve surface bonding strength, increase mechanical bite force, simplify The effect of the construction process

Inactive Publication Date: 2010-01-13
沈阳乾玉水利有限公司
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this process, since the water, cement, and sand and gravel mixtures are all in one integrated equipment to complete the pulping and mixing into concrete, only the mixing process of the concrete is changed, because the water, cement, and sand and gravel mixtures are all in one The equipment completes pulping and mixing into concrete. In the turbine mixer, water and cement are mixed into cement paste, which is discharged through the high-speed rotating mixing chamber to form cement slurry, and then mixed with sand and gravel at the far end of the turbine mixer to form Concrete requires a lot of equipment, cumbersome process, and complic

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Construction method of gunite concrete

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1: Construction method for pouring shotcrete in foundation pit of large concrete engineering

[0029] For foundation pit pouring of large-scale concrete engineering, conventional high-speed mixing slurry-making devices can be installed near the foundation pit according to the site. The water-cement ratio of the slurry is according to the design requirement. If you need to add fly ash to the cement slurry, The pulping device can provide cement mixed slurry of cement mixed with fly ash, if you need to add MgO 2 Type expansion agent, the pulping device can provide MgO 2 The high-speed mixer commonly used in the pulping of the cement slurry, the speed is greater than 1200r / min, the mixing time is 30s-50s, and the qualified cement slurry is transported to the conveying device of the concrete pouring area by the conveying pump through the conveying pipe 2 spare. Sand and gravel aggregates can be conveyed by conveying trough or conveyer belt. When using two-level aggrega...

Example Embodiment

[0030] Example 2: Construction method using shotcrete gravity dam

[0031] The sprayed concrete gravity dam is used for construction, and the maximum particle size can be up to 30cm. The amount of cement can be reduced to reduce the temperature rise of hydration heat. Cold water slurry and aggregate pre-cooling can be conveniently used to effectively reduce the warehouse temperature and concrete pouring. The process effectively prevents the separation of large aggregates. In the construction site, pipeline conveying and mixed material conveying devices are used to replace trucks to transport concrete, and simple conventional high-speed mixing slurry-making devices and mixing conveyors 3 are used to replace expensive concrete mixing plants. The construction period can be shortened by 1 / 3.

Example Embodiment

[0032] Example 3: Construction method of shotcrete in embankment and dam construction

[0033] In order to reduce the cross-section of the dam and enhance the anti-impact or anti-seepage ability, natural mixtures can be selected, and the conveying device 2 is adopted. The grout conveying device 1 is used for spraying and the mixing conveyor 3 is simply mixed and transported, and rolled to form cement sand and gravel aggregates. Stone structure. Maximize the use of local materials, save investment, and be durable.

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

No PUM Login to view more

Abstract

The invention discloses a construction method of gunite concrete, comprising the following steps: adopting normal pure cement paste consisting of water and cement or mixed cement paste consisting of water and cement mixed with fly ash, which is provided by a high-speed stirring slurrying device; respectively injecting dynamic gravel mixed material of a free falling body or respectively injecting dynamic sand and aggregate of the free falling body via a slurry transmission device; injecting cement paste and dynamic gravel mixed material or dynamic sand and aggregate to cause that the mixture enters a mixed conveyor entrance in an imperfect-mixing state; after stirred into even mixed material, directly sending the mixed material into a cabin via the gravity of the mixed material or sending the mixed material into a cabin via a mixed material sending device for vibrating and pouring into concrete. The invention combines concrete mixing, transporting and pouring technology into a whole, directly pours in site to continuously perform concrete construction, which simplifies concrete construction technology; the invention has few in-site construction devices, convenient operation, quick pouring, low cost and short construction period, effectively strengthens various mechanical indexes of concrete and obviously improves construction efficiency.

Description

technical field [0001] The invention relates to an integrated concrete construction method suitable for pouring construction of large-volume concrete projects, in particular to an integrated concrete mixing, transportation, and pouring process, with less on-site construction equipment, simple and fast operation, and low cost. Low cost, short construction period, high-quality engineering, and efficient shotcrete construction method. This method can also be used in medium and small volume concrete projects. Background technique [0002] At present, ordinary plain concrete is widely used in engineering. For very small scattered concrete projects, manual mixing is sometimes used, and the concrete is poured with a shovel or a trolley. This manual concrete construction method is not only inefficient, but also due to cement Uneven mixing will reduce the strength of concrete and affect the quality of concrete engineering. For small and medium-sized concrete projects, small-scale m...

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
no application Login to view more
IPC IPC(8): E02D15/02E04G21/04
Inventor 李千李珍子纪志军鲁林刘顺义毕雁玲林聪俐陈俊喜刘越牛永田姚惠玲张峰赵一兵刘刚马德新
Owner 沈阳乾玉水利有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap