Concrete accelerator and preparation method thereof

A technology of quick-setting agent and concrete, applied in the field of concrete, can solve the problems of a large amount of waste gas, waste water and waste smoke, can not effectively improve the performance of concrete quick-setting agent, can not use waste aluminum ash, etc., to improve performance, kiln temperature The effect of easy control and good compressive strength

Inactive Publication Date: 2020-09-25
四川省绿辉环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The concrete quick-setting agent in the prior art can only achieve initial setting within 5 minutes and final setting within 10 minutes within the initial setting time, and it is close to this time point, and the time cannot be reduced;
[0009] And the concrete quick-setting agent in the prior art cannot carry out the utiliz

Method used

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  • Concrete accelerator and preparation method thereof
  • Concrete accelerator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1,

[0037] Concrete accelerator, concrete accelerator includes by weight:

[0038] 50-60 parts by weight of waste aluminum ash;

[0039] 3-8 parts by weight of bauxite;

[0040] 15-25 parts by weight of soda ash;

[0041] 6-10 parts by weight of silicon powder;

[0042] 6-10 parts by weight of quicklime;

[0043] The stabilizer is 2-6 parts by weight.

[0044] The stabilizer includes in parts by weight:

[0045] 5-10 parts by weight of sodium sulfate;

[0046] 8-14 parts by weight of potassium carbonate;

[0047] 21-29 parts by weight of calcium chloride;

[0048] Medical stone 24-36 parts by weight;

[0049] 22-30 parts by weight of triethanolamine.

[0050] Preparation of concrete accelerator:

[0051] A1: The raw material components of waste aluminum ash, bauxite, soda ash, silicon powder, quicklime, sodium sulfate, potassium carbonate, calcium chloride, medical stone, and triethanolamine are accurately weighed in proportion, and then the mixture is transported The system is t...

Example Embodiment

[0058] Example 2,

[0059] The difference between this embodiment and embodiment 1 is:

[0060] The concrete accelerator includes in parts by weight:

[0061] 55 parts by weight of waste aluminum ash;

[0062] 5 parts by weight of bauxite;

[0063] 20 parts by weight of soda ash;

[0064] 8 parts by weight of silicon powder;

[0065] 8 parts by weight of quicklime;

[0066] The stabilizer is 4 parts by weight; the stabilizer includes 8 parts by weight of sodium sulfate, 11 parts by weight of potassium carbonate, 25 parts by weight of calcium chloride, 30 parts by weight of medical stone, and 26 parts by weight of triethanolamine.

[0067] Preparation of concrete accelerator:

[0068] The raw material components are accurately weighed in proportion, and then the mixture is transported to the rotary kiln through the conveying system for roasting. Among them, roasting specifically includes the steps: heating the mixture to 200°C at a heating rate of 1.5°C / min, holding it for 30 minutes, then h...

Example Embodiment

[0069] Example 3,

[0070] The difference between this embodiment and embodiment 1 is that the concrete accelerator includes, in parts by weight:

[0071] 50 parts by weight of waste aluminum ash;

[0072] 3 parts by weight of bauxite;

[0073] 15 parts by weight of soda ash;

[0074] 6 parts by weight of silicon powder;

[0075] 6 parts by weight of quicklime;

[0076] The stabilizer is 2 parts by weight; the stabilizer includes 5 parts by weight of sodium sulfate, 8 parts by weight of potassium carbonate, 21 parts by weight of calcium chloride, 24 parts by weight of medical stone, and 22 parts by weight of triethanolamine.

[0077] Preparation of concrete accelerator:

[0078] The raw material components are accurately weighed in proportion, and then the mixture is transported to the rotary kiln through the conveying system for roasting. Among them, roasting specifically includes the steps: heating the mixture to 150°C at a heating rate of 1°C / min, holding it for 20 minutes, then heating...

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Abstract

The invention discloses a concrete accelerator and a preparation method thereof. The concrete accelerator comprises the following components in parts by weight: 50-60 parts of waste aluminum ash, 3-8parts by weight of bauxite, 15-25 parts by weight of sodium carbonate, 6-10 parts by weight of silicon powder, 6-10 parts by weight of quick lime and 2-6 parts by weight of a stabilizer. The preparation method of the concrete accelerator comprises the following steps: accurately weighing the raw components in proportion, and conveying a formed mixture to a rotary kiln through a conveying system for roasting. According to the invention, shorter initial setting time and final setting time are obtained through a unique formula; better compressive strength is realized; the waste aluminum ash is adopted in the formula, so waste utilization can be reasonably carried out; in the preparation process, waste gas, waste water and waste smoke are avoided; and in the preparation method, a rotary kiln is adopted for roasting the mixed raw materials, a kiln temperature is easy to control, and a unique roasting process is selected, so the performance of the concrete accelerator can be effectively improved.

Description

Technical field [0001] The invention belongs to the technical field of concrete, and specifically relates to a concrete accelerator and a preparation method thereof. Background technique [0002] Accelerator is an admixture that can be mixed into concrete to quickly set and harden. The main types are inorganic salts and organic substances. Powdery solid, its mixing amount only accounts for 2% to 3% of the amount of cement in the concrete, but it can make the concrete initially set within 5 minutes and finally set within 10 minutes. In order to achieve the purpose of emergency repair or rapid setting of concrete in shafts. It is an indispensable additive in the sprayed concrete construction method. Their function is to accelerate the hydration and hardening of cement, and form enough strength in a short time to meet the requirements of special construction. [0003] The prior art accelerator is mainly made of alumina clinker (that is, clinker made by burning bauxite, soda ash an...

Claims

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Application Information

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IPC IPC(8): C04B22/14C04B103/12
CPCC04B40/0042C04B40/0046C04B2103/12C04B22/06C04B22/10C04B22/064C04B22/147C04B22/124C04B22/00
Inventor 胡智英
Owner 四川省绿辉环保科技有限公司
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