Novel early strength agent for concrete and method for preparing novel early strength agent
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A technology of concrete and early strength agent, applied in the field of new concrete early strength agent and its preparation, can solve the problems of unsatisfactory concrete strength, restrict the development of early strength agent, increase the cost of preparation, etc., achieve strength improvement and wide application range , Improve the effect of early strength effect
Active Publication Date: 2017-01-11
GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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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.
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[0022] The present invention provides a novel concrete early-strength agent and its preparation method. In order to achieve the purpose, technical scheme and effect of the present invention to be clearer and clearer, the present invention will be further described in detail below.
[0023] A new type of concrete early strength agent is made of the following components in proportion by weight: 20-25 parts of CaO, 25 parts of Al 2 o 3 20~25 parts, Nb 2 o 5 4~6 parts, MgSO 4 3-7 parts, barite powder 15-20 parts, zeolite powder 15-20 parts, Bi 2 o 3 0.3~0.7 parts, Li 2 CO 3 1 to 3 parts, 0.2 to 0.4 parts of NaCl, 0.2 to 0.4 parts of KCl;
[0024] The preparation method of described novel concrete accelerator comprises the following steps:
[0025] 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 hour...
Embodiment 1
[0033] A new type of concrete early strength agent is made of the following components by weight: 22 parts of CaO, 22 parts of Al 2 o 3 23 parts, Nb 2 o 5 5 parts, MgSO 4 5 parts, barite powder 18 parts, zeolite powder 18 parts, Bi 2 o 3 0.5 parts, Li 2 CO 3 2 parts, 0.3 parts of NaCl, 0.3 parts of KCl.
Embodiment 2
[0035] A new type of concrete early strength agent is made of the following components in proportion by weight: 20 parts of CaO, 20 parts of Al 2 o 3 20 parts, Nb 2 o 5 4 parts, MgSO 4 3 parts, barite powder 15 parts, zeolite powder 15 parts, Bi 2 o 3 0.3 parts, Li 2 CO 3 1 part, NaCl 0.2 part, KCl 0.2 part.
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Abstract
The invention discloses a novel early strength agent for concrete and a method for preparing the novel early strength agent. The novel early strength agent comprises, by weight, 20-25 parts of CaO, 20-25 parts of Al2O3, 4-6 parts of Nb2O5, 3-7 parts of MgSO4, 15-20 parts of barite powder, 15-20 parts of zeolite powder, 0.3-0.7 part of Bi2O3, 1-3 parts of Li2CO3, 0.2-0.4 part of NaCl and 0.2-0.4 part of KCl. The method includes carrying out ball-milling on various components; calcining the various components at the temperatures of 850-900 DEG C; carrying out ball-milling on the various components and reagents such as calcium and aluminum hydrotalcite to obtain the novel early strength agent for the concrete. The novel early strength agent and the method have the advantages that excellent early strength effects can be realized by the novel early strength agent, the novel early strength agent is high in strength, has low calcination temperature and is a promising admixture for the concrete, and the like.
Description
technical field [0001] The invention relates to a novel concrete early strength agent and a preparation method thereof, 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 inorg...
Claims
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