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Environment-friendly low-alkali CL-free accelerator

An accelerator and environment-friendly technology, applied in the field of accelerator, can solve the problems of less application and high price, achieve good activity, low density, and reduce the standard consistency of cement

Active Publication Date: 2014-12-31
甘肃智通云翔交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In Japan, Europe and other developed countries, there are almost no high-alkaline accelerators, and more and more low-alkali or alkali-free powder accelerators are used in China. However, because most of them use chemical synthesis and reprocessing technology, the price Higher, fewer applications

Method used

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Examples

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Embodiment 1

[0020] Example 1 Environmentally friendly low-alkali and CL-free - Accelerator, it is made of the following weight percentage (kg / kg) after the raw materials are mixed evenly, after grinding, passing through a 0.08mm square empty sieve, so that the sieve rate is less than 15%, that is, the accelerator product: fluorinated Sodium 4%, sodium aluminate 14%, high aluminum fly ash 5.8%, ultrafine calcium dust 75% and polyvinyl alcohol 24-88 1.2%.

Embodiment 2

[0021] Example 2 Environmentally friendly low-alkali and CL-free - Accelerator, it is made of the following weight percentage (kg / kg) after the raw materials are mixed evenly, after grinding, passing through a 0.08mm square empty sieve, so that the sieve rate is less than 15%, that is, the accelerator product: fluorinated Sodium 10%, sodium aluminate 11%, high aluminum fly ash 18%, ultrafine calcium dust 60% and polyvinyl alcohol 24-88 1%.

Embodiment 3

[0022] Example 3 Environmentally friendly low-alkali and CL-free - Accelerator, it is made of the following weight percentage (kg / kg) after the raw materials are mixed evenly, after grinding, passing through a 0.08mm square empty sieve, so that the sieve rate is less than 15%, that is, the accelerator product: fluorinated Sodium 16%, sodium aluminate 8%, high aluminum fly ash 30.2%, ultrafine calcium dust 45% and polyvinyl alcohol 24-88 0.8%.

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Abstract

The invention relates to an environment-friendly low-alkali CL-free accelerator. An accelerator product is prepared by the steps of uniformly mixing raw materials, grinding, sieving through a 0.08mm square hole sieve, wherein the sieve residue rate is lower than 15%, the percentages by weight of the raw materials are as follows: 4-34% of sodium fluoride, 2-14% of sodium aluminate, 5.8-63.8% of high-alumina fly ash, 0-75% of super fine calcium powder and 0.2-1.2% of polyvinyl alcohol 24-88. The environment-friendly low-alkali CL-free accelerator provided by the invention is low in cost, good in rapid hardening effect and can be applied to wet shotcrete, dry shotcrete, as well as non-jet construction type cement concrete engineering.

Description

technical field [0001] The invention relates to an accelerator, in particular to an environment-friendly low-alkali and CL-free - accelerator. Background technique [0002] The domestic quick-setting agent is developed with the development of shotcrete technology. From the initial single chemical product to the compounding of various chemical products, the performance has also rapidly developed from just meeting the construction needs to having fast setting, early strength, and non-toxic. , strong adhesion, good construction, basically no decrease in strength in the later stage, and develops from high alkali (pH value around 13) to low alkali and non-alkali. At present, the strong alkali type is cheap, and the initial and final setting is fast, but the disadvantage is that the alkalinity is high, and the strength of shotcrete will lose more in the later stage, which will cause irritation and corrosion to the skin of production workers. Opal, illite, etc. Will have a destru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B103/12
Inventor 冯月娥杨敏琦曾馨花张小龙
Owner 甘肃智通云翔交通科技有限公司
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