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Early strength composite admixture and preparation method thereof

A composite admixture and admixture technology, which is applied in the field of concrete admixtures, can solve the problems of no contribution to concrete work performance, no significant improvement in strength, and small improvement, and achieve significant economic and social benefits. The effect of improving workability and reducing cement consumption

Inactive Publication Date: 2012-06-20
中铁岩锋成都科技有限公司
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Problems solved by technology

However, the early strength improvement in the technical scheme is not large, and it does not save cement as an early strength agent. On the other hand, it does not significantly increase the strength of 1 day and 1 day before, and has no contribution to the performance of concrete.

Method used

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  • Early strength composite admixture and preparation method thereof
  • Early strength composite admixture and preparation method thereof
  • Early strength composite admixture and preparation method thereof

Examples

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Embodiment Construction

[0039] The present invention will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.

[0040] Preparation Example 1 Preparation Example 2 Preparation Example 3 Preparation Example 4 Preparation Example 5 Sodium sulfate (unit: kg) 20 70 25 65 45 Calcium nitrate (unit: kg) 45 60 50 55 55 Potassium nitrite (unit: kg) 20 50 25 45 35 Urea (unit: kg) 10.6 64 40 66 45 Silica fume (unit: kg) 797 720 800 935 765

[0041] Mix sodium sulfate, calcium nitrate and potassium nitrite according to the above ratio to prepare an inorganic salt mixture; urea according to the above ratio as an organic salt mixture; take the silicon powder of the above ratio as an admixture; then mix the above organic salt mixture , the inorganic salt mixture and the admixture are mixed, mixed and stirred for 8 to 10 minutes to make them evenly stirred, a...

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Abstract

The invention discloses an early strength composite admixture, which consists of the following components in parts by weight: 8-20 parts of an inorganic salt mixture, 1-8 parts of an organic salt mixture and 75-90 parts of an admixture. Due to the adoption of the early strength composite admixture, the 3h, 8h, 12h and 1d strength of concrete can be enhanced remarkably, long-term strength is not influenced basically, and the working performance and stability of concrete can be improved.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a concrete admixture for improving the early strength of concrete and shortening the hardening time. Background technique [0002] With the rapid development of modern concrete technology, admixtures, as an irreplaceable and important part of concrete, play an increasingly important role in improving the performance of fresh concrete and improving the compactness and durability of concrete. Concrete admixture technology has become a technology that has the greatest impact on the progress of concrete technology after the invention of concrete admixtures. Research on concrete admixture technology is a comprehensive technical measure to reduce the amount of cement, improve construction performance, improve compactness and durability, and comprehensively improve the "greenness" of concrete. Most of the current concrete admixtures are fly ash, mineral powder, silica powder and other materials,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B24/02C04B24/04C04B28/00
Inventor 罗朝廷阳大福阳中毅穆亚光廖华罗珣
Owner 中铁岩锋成都科技有限公司
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