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Preparation method of concrete early strength agent

A technology for early strength agent and concrete, which is applied in the field of preparation of concrete early strength agent, can solve the problems of unsatisfactory concrete strength, restrict the development of early strength agent, increase preparation cost, etc., and achieves reduced preparation cost and good early strength effect. , the effect of increasing strength

Active Publication Date: 2017-02-01
GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it can achieve a certain early strength effect, it is still unsatisfactory in terms of concrete application, especially in terms of concrete strength.
In addition, its calcination temperature is relatively high at 1250-1400°C, which increases the production cost virtually and restricts the development of accelerators to a certain extent.

Method used

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  • Preparation method of concrete early strength agent
  • Preparation method of concrete early strength agent

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preparation example Construction

[0030] The present invention provides a method for preparing a concrete early strength agent. In order to achieve the purpose, technical scheme and effect of the present invention to be more clear and definite, the present invention will be further described in detail below.

[0031] A concrete early-strength agent, made of the following components in proportion by weight: 20-30 parts of CaO, 20-30 parts of Al 2 o 3 15~25 parts, TiO 2 3~5 parts, FeSO 4 4 to 6 parts, 10 to 15 parts of silica fume, 15 to 20 parts of fluorite powder, Y 2 o 3 0.5~0.7 parts, Li 2 CO 3 1-3 parts, NaCl 0.1-0.3 parts, KCl 0.1-0.3 parts;

[0032] The preparation method of described concrete accelerator comprises the following steps:

[0033] 1) The above-mentioned components are divided into components according to the weight ratio: absolute ethanol: zirconia ball = 1:1:3, and the material is placed on a ball mill with a rotating speed of 200-300 rpm for 6-8 hours;

[0034] 2) Screening, d...

Embodiment 1

[0041] A concrete early-strength agent is made of the following components in parts by weight: 25 parts of CaO, 25 parts of Al 2 o 3 20 parts, TiO 2 4 parts, FeSO 4 5 parts, microsilica fume 12 parts, fluorite powder 18 parts, Y 2 o 3 0.6 parts, Li 2 CO 32 parts, 0.2 parts of NaCl, 0.2 parts of KCl;

[0042] The preparation method of described concrete accelerator comprises the following steps:

[0043] 1) The above-mentioned components are divided into components according to the weight ratio: absolute ethanol: zirconia balls = 1:1:3, and the material is placed on a ball mill with a rotating speed of 250 rpm for 7 hours;

[0044] 2) Screening, drying, and dry pressing in a stainless steel mold for molding and demoulding; and placing the demoulded sample in a muffle furnace at 850°C for 1.5 hours for calcination, and cooling naturally;

[0045] 3) Crushed into 100 mesh powder, and washed with deionized water until AgNO 3 Check until no precipitation occurs;

[004...

Embodiment 2

[0050] A concrete early-strength agent, made of the following components in proportions by weight: 20 parts of CaO, 20 parts of Al 2 o 3 15 parts, TiO 2 3 parts, FeSO 4 4 parts, microsilica fume 10 parts, fluorite powder 15 parts, Y 2 o 3 0.5 parts, Li 2 CO 3 1 part, NaCl 0.1 part, KCl 0.1 part.

[0051] The preparation method of described concrete accelerator comprises the following steps:

[0052] 1) The above-mentioned components are divided into components according to the weight ratio: absolute ethanol: zirconia balls = 1:1:3, and the material is placed on a ball mill with a rotating speed of 200 rpm for 6 hours;

[0053] 2) Screening, drying, and dry pressing in a stainless steel mold for molding and demoulding; and placing the demoulded sample in a muffle furnace at 800°C for 1 hour for calcination, and cooling naturally;

[0054] 3) Crushed into 60 mesh powder, and washed with deionized water until AgNO 3 Check until no precipitation occurs;

[0055] 4) A...

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Abstract

The invention discloses a preparation method of a concrete early strength agent. The early strength agent is prepared from, by weight, 20-30 parts of CaO, 15-25 parts of Al2O3, 3-5 parts of TiO2, 4-6 parts of Fe2SO4, 10-15 parts of silicon micro-powder, 15-20 parts of fluorite powder, 0.5-0.7 parts of Y2O3, 1-3 parts of Li2CO3, 0.1-0.3 parts of NaCl and 0.1-0.3 parts of KCl. The preparation method comprises the following steps: carrying out ball milling on above raw materials, calcining the ball-milled raw materials at 800-900 DEG C, and carrying out ball milling on the calcined raw materials and calcium and aluminum hydrotalcite to obtain the concrete early strength agent. The concrete early strength agent has the advantages of good early strength effect, high strength and low temperature low, and is a concrete additive with good prospect.

Description

technical field [0001] The invention relates to a preparation method of a concrete early strength agent, belonging to the technical field of concrete admixtures. Background technique [0002] With the rapid development of the economy, the role of concrete in construction has become more and more important, which virtually puts forward higher and higher requirements for concrete. In order to improve the performance of concrete and meet the needs of concrete construction, those skilled in the art often use the method of adding concrete admixtures to concrete. Among them, the commonly used concrete admixtures include water reducing agent, retarder, early strength agent, waterproofing agent and so on. [0003] The early strength agent is an admixture that can accelerate the hydration rate of cement and increase the early strength of concrete without significantly affecting the later strength. According to the chemical composition, it is mainly divided into inorganic early stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/20
CPCC04B40/0039C04B22/064C04B22/06C04B22/142C04B18/146C04B22/126C04B22/10C04B22/124C04B24/06C04B24/20C04B2103/302
Inventor 王恒尹丹黄煌陈威阮长泰欧鹏谢体云
Owner GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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