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Alkaline-free liquid cement accelerator and using method therefor

A technology of quick-setting agent and cement, which is applied in the field of cement additives. It can solve the problems of large rebound, corrosion, and adverse effects on the strength of concrete in the later stage, and achieve the advantages of shortened hydraulic coagulation time, high early strength, and reduced damage. Effect

Inactive Publication Date: 2015-12-23
仇鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkaline quick-setting agent has many defects. The quick-setting agent itself is corrosive, which will have a serious adverse effect on the later strength of concrete after use. At the same time, the cohesion of the mixed slurry is not good, and the amount of rebound is also large.

Method used

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  • Alkaline-free liquid cement accelerator and using method therefor
  • Alkaline-free liquid cement accelerator and using method therefor
  • Alkaline-free liquid cement accelerator and using method therefor

Examples

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Embodiment Construction

[0020] Below in conjunction with embodiment the present invention is described in detail, embodiment is only preferred embodiment of the present invention, is not limitation of the present invention, and table one is the specific embodiment 1,2,3 of non-alkali liquid cement quick-setting agent of the present invention.

[0021] Table I

[0022]

[0023] The preparation methods of the above examples are well known in the art and will not be described in detail here.

[0024] Add the alkali-free liquid cement quick-setting agent obtained in Examples 1, 2, and 3 to cement for performance testing. The amount of the quick-setting agent added is 0.2%. The specific experimental parameters and the specific components of the cement are shown in Table 2

[0025] Table II

[0026]

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PUM

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Abstract

The invention belongs to cement auxiliaries and particularly relates to an alkaline-free liquid cement accelerator and a using method therefor. The alkaline-free liquid cement accelerator is prepared from the following components in parts by weight: 40-45 parts of aluminum sulfate, 5-10 parts of aluminum trifluoride, 0.2-0.5 part of a tackifying component, 4-9 parts of a reinforcing material, 3-7 parts of organic matters and 50-60 parts of water. The accelerator for a cement processing process provided by the invention has an adjusting effect on the cohesion time of cement, is free of corrosion and toxicity, causes no corrosive damages on the skin and body of constructors, and has no adverse influence on durability of concrete.

Description

technical field [0001] The invention belongs to cement additives, in particular to an alkali-free liquid cement quick-setting agent, and also relates to its use method. Background technique [0002] Cement and concrete, as building materials with a development history of more than 100 years, play an important role in infrastructure construction. The emergence of accelerators has greatly shortened the setting and hardening time of concrete, making shotcrete construction a widely used technology. [0003] The quick-setting agents widely used in the market are mainly alkaline accelerators. Alkaline quick-setting agent has many defects. The quick-setting agent itself is corrosive, and it will have a serious adverse effect on the later strength of concrete after use. At the same time, the cohesion of the mixed slurry is not good, and the amount of rebound is also large. [0004] Alkali-free liquid cement quick-setting agent, mainly aluminum salt plays the role of quick-setting....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B22/14C04B22/12C04B103/12
Inventor 仇鹏
Owner 仇鹏
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